Showing posts with label crustaceans. Show all posts
Showing posts with label crustaceans. Show all posts

Tuesday, April 16, 2019

Does Social Status Change Brains?

A reposting of an original article in The Scorpion and the Frog.

Photo by The Grappling Source Inc.
at Wikimedia Commons
Being subordinated is stressful. The process of one individual lowering the social rank of another often involves physical aggression, aggressive displays, and exclusion. In addition to the obvious possible costs of being subordinated (like getting beat up), subordinated individuals often undergo physiological changes to their hormonal systems and brains. Sounds pretty scary, doesn’t it? But what if some of those changes are beneficial in some ways?

Dominance hierarchies are a fact of life across the animal kingdom. In a social group, everyone can’t be dominant (otherwise, life would always be like an episode of Celebrity Apprentice, and what could possibly be more stressful than that?). Living in a social group is more peaceful and nutritive when a clear dominance hierarchy is established.

Establishing that hierarchy often involves a relatively short aggressive phase of jostling for position, followed by a longer more stable phase once everyone knows where they fall in the social group. Established dominance hierarchies are not always stable (they can change over time or from moment to moment) and they are not always linear (for example, Ben can be dominant over Chris, who is dominant over David, who is dominant over Ben). But they do generally help reduce conflict and the risk of physical injury overall.

Nonetheless, it can be stressful to be on the subordinate end of a dominance hierarchy and these social interactions are known to cause physiological changes. Researchers Christina Sørensen and Göran Nilsson from the University of Oslo, Cliff Summers from the University of South Dakota and Øyvind Øverli from the Norwegian University of Life Sciences investigated some of these physiological differences among isolated, dominant, and subordinate rainbow trout.



A photo of a rainbow trout by Ken Hammond at the USDA.
Photo at Wikimedia Commons.
Like other salmonid fish, rainbow trout are aggressive, territorial and develop social hierarchies as juveniles. Dominant trout tend to initiate most of the aggressive acts, hog food resources, grow larger, and reproduce the most, whereas subordinate trout display less aggression, feeding, growth, and reproduction. The researchers recorded the behavior, feeding and growth rates in three groups of fish: trout housed alone, trout housed with a more subordinate trout, and trout housed with a more dominant trout. The researchers also measured cortisol (a hormone involved in stress responses), serotonin (a neurotransmitter involved in mood, the perception of food availability, and the perception of social rank, among other things) and the development of new neurons (called neurogenesis) in these same fish.

This video of two juvenile rainbow trout was taken by Dr. Erik Höglund. Here is Christina Sørensen’s description of the video: “What you see in the film is two juvenile rainbow trout who have been housed on each side of a dividing wall in a small aquarium. The dividing wall has been removed (for the first time) immediately before filming. You will see that the fish initially show interest for each other, followed by a typical display behaviour, where they circle each other. Finally one of the fish will initiate aggression by biting the other. First the aggression is bidirectional, as they fight for dominance, but after a while, one of the fish withdraws from further aggression and shows only submissive behaviour (escaping from the dominant and in the long run trying to hide... and as is described in the paper, depressed feed intake). The video has been cut to show in quick succession these four stages of development of the dominance hierarchy”.

The researchers found that as expected, the dominant trout were aggressive when a pair was first placed together, but the aggression subsided after about 3 days. Also as expected, the dominant and isolated trout were bold feeders with low cortisol levels and high growth rates, whereas the subordinate trout did not feed as well, had high cortisol levels and low growth rates. Additionally, the subordinate trout had higher serotonin activity levels and less neurogenesis than the dominant or isolated trout. These results suggest that the subordination experience causes significant changes to trout brain development (Although we can’t rule out the possibility that fish with more serotonin and less neurogenesis are predisposed to be subordinate). In either case, this sounds like bad news for subordinate brains, right? Maybe it is. Or maybe the decrease in neurogenesis just reflects the decrease in overall growth rates (smaller bodies need smaller brains). Or maybe something about the development of these subordinate brains improves the chances that these individuals will survive and reproduce in their subordination.


A crayfish raising its claws. Image by Duloup at Wikimedia.
Research on dominance in crayfish by Fadi Issa, Joanne Drummond, and Don Edwards at Georgia State University and Daniel Cattaert at the University of Bordeaux helps shed light on this third possibility. Crayfish (which are actually not fish at all, but are freshwater crustaceans that look like small lobsters) form long-lasting and stable social hierarchies. If you poke a crayfish in the side, an isolated or dominant crayfish will turn towards whatever poked it and raise its posture and claws to confront it; A subordinate crayfish will do one of two maneuvers that involves lowering the posture and backing away from whatever poked it. Furthermore, dominant and subordinate crayfish have different neuronal activity patterns in response to being poked, and part of this difference involves differences in the activity of serotonergic neurons.

It appears that the brains of dominant and subordinate individuals function differently and part of this difference involves serotonin. This may help dominant animals to continue to behave in a dominant fashion and subordinate individuals to continue to behave in a subordinate fashion, thereby preserving the peace for the whole social group.

Want to know more? Check these out:

1. Sørensen, C., Nilsson, G., Summers, C., & Øverli, �. (2012). Social stress reduces forebrain cell proliferation in rainbow trout (Oncorhynchus mykiss) Behavioural Brain Research, 227 (2), 311-318 DOI: 10.1016/j.bbr.2011.01.041

2. Issa, F., Drummond, J., Cattaert, D., & Edwards, D. (2012). Neural Circuit Reconfiguration by Social Status Journal of Neuroscience, 32 (16), 5638-5645 DOI: 10.1523/JNEUROSCI.5668-11.2012

3. Yeh, S., Fricke, R., & Edwards, D. (1996). The Effect of Social Experience on Serotonergic Modulation of the Escape Circuit of Crayfish Science, 271 (5247), 366-369 DOI: 10.1126/science.271.5247.366

4. Issa, F., & Edwards, D. (2006). Ritualized Submission and the Reduction of Aggression in an Invertebrate Current Biology, 16 (22), 2217-2221 DOI: 10.1016/j.cub.2006.08.065

Tuesday, May 23, 2017

Where the Wild Things Are: Amazing Animal Watching Vacations

A modified repost of an original article from May, 2012.

School is winding down, the weather is beautiful and it is time to start thinking about summer vacation! Do you love watching and learning about animals? Then consider one (or more) of these animal watching vacations:


Go to a zoo:

Get a great view of a Siberian tiger at the Toronto Zoo.
Photo by Ber Zophus at Wikimedia.
Zoos allow you to explore the world in a single day: Meandering paths lead you past animals from across the globe. Lions, and tigers and bears, Oh my! But don’t forget the primates, reptiles, birds, and sea mammals. No matter what your animal fancy, you can likely see it at the zoo. Walk through the zoo reading the posted information on each species. Or sit at your favorite exhibit and focus on a single animal. Participate in an educational activity like touching and feeding animals with their keepers, a course, or even a sleepover. And while you are there, learn about how the zoo contributes to animal well-being: Many zoos provide research opportunities to study animal behavior and health (such as the friendship study in crested macaques), support captive breeding programs to restore threatened wild populations, rehabilitate injured or abandoned wild animals, and support habitat conservation.

If you have a local zoo, see what it has to offer. And if you like to travel, consider the San Diego Zoo, the Smithsonian National Zoological Park in Washington, DC, the Singapore Zoo, the National Zoological Gardens of South Africa, or the Toronto Zoo. All of these zoos are well-respected institutions that promote animal conservation and have fantastic educational programs.

Learn more about some of these zoos here.


Go to an aquarium:

Interact with dolphins at the National Aquarium.
Photo by the National Aquarium at Wikimedia.
Aquaria are places of wonder and tranquility. Learn about teleost fish, sharks, rays, crustaceans, octopuses, jellyfish, coral, and many more species that inhabit our oceans, lakes, and rivers. Relax while watching the graceful movements of sea animals and marvel at the agility of apex predators at feeding time. Learn about the many aquatic habitats our planet supports and the amazing diversity of the animals that live in them. Like zoos, aquaria provide research opportunities (such as the individual recognition study in octopuses), support conservation, and have fun educational programs and activities.

If you get a chance, you may want to check out the National Aquarium in Baltimore, the Georgia Aquarium, the Monterey Bay Aquarium, the Aquarium of Western Australia (AQWA) in Perth or L’Oceanogràfic in Valencia, Spain.


Learn more about some of these aquariums here and here.



Take a wildlife tour:

See breathtaking animals in their natural habitat
from the security of your guide's vehicle.
Photo by Brian Snelson at Wikimedia.
If you want to see wild animals in their natural habitats, experienced guides can help you find animals that are often elusive while keeping you safe and preserving animal habitats. Guides can give detailed information about the animals you encounter and can often tell thrilling tales of their own personal experiences. Some even provide lunch.

Maybe your dream has always been to go on an African safari. Consider the Safari Serengeti trip in Tanzania by Overseas Adventure Travel, where you can see animals like Thomson’s gazelles, buffalo, and elephants. Or participate in a North American safari in Yellowstone National Park with Wolf & Bear Safaris by the Yellowstone Safari Company. If a Northwoods flavor suits you, check out Northwoods Outfitters Moose Wildlife Safari in Maine. Or take a Hawaiian vacation and go whale watching with Ultimate Whale Watch in Maui. For a scientific marine vacation, go on an Educational Shark Encounter trip with Fish Finder Adventures based in Ocean City, Maryland. Whatever your dream animal watching trip, a guide can help you bring it to life.


Go somewhere wild on your own:

Kayak by thousands of birds in the Everglades
(but don't forget your anti-bird-poop-hat).
Photo by Matt Magolan.
If you are an independently minded and experienced adventurer, the world is awaiting. And if you want to increase your chances of observing spectacular wild animals in nature, you should go somewhere that has a lot of spectacular wild animals… like Manuel Antonio Park in Costa Rica, where you can see four monkey species, two iguana species, two sloth species, coatis, toucans, vultures, parakeets, and hundreds of other species on a single hike. Or kayak in the Everglades National Park in Florida, where you can see crocodiles, dolphins, manatees and over 350 species of birds. Or SCUBA or snorkel the coral reefs of the Cayman Islands and feel like part of the community of coral, sponges, tropical fish, rays, sharks, and sea turtles.

Learn more about some of these trips here.


We share this world with countless amazing animals. Find your own way to experience, learn about and appreciate them. I’ll go into more detail on these vacations and others in future posts, so comment below and let us know what animal watching vacations you have done and what you are interested in doing in the future.

But for now, I will be going on my own vacation. Don't worry, there will be new The Scorpion and the Frog articles about animals in July!

Monday, January 18, 2016

Catch Him If You Can (A Guest Post)

By Caitlin Lockard

When playing Frisbee with your dog, do you ever wonder how they have the ability to catch it so effortlessly? The art of being able to figure out where something like a Frisbee is headed requires some crazy math skills. Ostracods are one kind of animal that puts their wicked math skills to the test while finding a mate.

The image above of a female ostracod was provided by Trevor Rivers.

You’ve never heard of an ostracod you say? Ostracods are small crustaceans, which basically means they have lots of legs and are covered by a hard shell. Male ostracods can be seen roaming throughout the ocean trying to enchant females with light displays. Typically, just after sunset, males begin their light displays, which consist of two phases. The first phase is the bright phase, which is short. The goal here is to signal to the female that “I’m here, single (except all my buddies that I brought with me of course) and ready to mingle”. The second phase is where males spiral up in a helix while pulsing repeatedly. This phase is much dimmer and is used by females to choose a mate. But exactly how do female ostracods go about catching the moving and light-pulsing man of her dreams?

Scientists, Trevor Rivers of the University of Kansas and Jim Morin of Cornell University, set off to explore if female ostracods try to intercept the moving and pulsing males or if they just chase them. In order to conduct this experiment, immature female ostracods were collected off the shore of Southwater Caye in Belize. After catching the ostracods, females were put into tanks and raised to maturity, ensuring that all the females were sexually mature virgins. Rivers and Morin put an LED light behind the different tanks in order to mimic an actual mating display. The LED light looked like a string of Christmas lights pulsing from bottom to top, mimicking the males’ helical light display. In the control group, there was an LED light placed behind the tank, however it was turned off. The duo questioned whether or not the LED light show was able to mimic the display put on by male ostracods. Also, they questioned how females respond to the males’ display by measuring the height at which females intercepted the LED light, how straight of a line the female swam in, if the female swam at an angle, and what direction the female swam in. Check out a video here.

The scientists found that the LED light was able to mimic the helical phase that male ostracods put on well enough for the females to respond. Females in the control group merely swam at the same height, as there was no reason for her to waste her energy with no “male” around. However, females in the experimental group had to think on their feet to figure out where their male crush was heading. They swam directly toward but slightly above the “male” than when there was no “mate” around. If the female merely headed to the same spot where her “male” previously was, she would miss him. Instead, she had to anticipate where he was going next and head that direction.

What’s the moral of the story here? If you’re a female ostracod, your man will always be on the move, so you better have some gnarly geometry skills in order to track him down.


Work Cited:

Rivers, T., & Morin, J. (2013). Female ostracods respond to and intercept artificial conspecific male luminescent courtship displays Behavioral Ecology, 24 (4), 877-887 DOI: 10.1093/beheco/art022

Wednesday, September 25, 2013

Just Another Day (A Guest Post)

By Cassie Apostolou


The zooplankton picture on the left was provided by the EPA at Wikimedia Commons.
The human picture on the right was provided by Cassie Apostolou.
Check out the two pictures above. It doesn’t look like those two animals share a lot in common, right? Obviously the two organisms don’t look alike and the zooplankton (the odd looking microorganism creature in the left picture) lives in water and us humans typically like to stay dry on land. But if you dig a little deeper than just what you see, you’ll notice that most humans (probably you too) tend to endure specific daily migration patterns just as these little creatures do as well. Curious? Or maybe even offended that I pretty much just compared you to a zooplankton? Then continue reading and obtain the information you can throw in a friend’s face next time they are on an ego trip!

Whether you are in school or have a job, I’m sure you have a daily schedule you stick to. A daily example most people can relate to is this: you wake up to the annoying beeping of your alarm, maybe take a shower, change clothes, eat some breakfast, and then are headed off to work or school, you stay there for so many hours and then turn around and head on home (probably even taking the same routes most days too!) Well, as we do this on a daily basis, many zooplankton have a regular schedule too.

Photo of drifting zooplankton by
NOAA at Wikimedia Commons.

Zooplankton means “animal/water drifters”. Most get this name from performing daily vertical migrations cycles by floating or swimming to the surfaces of waters at night, while during the day time they stay in deeper depths of the waters. Why do they do this though? Well, research has shown that some zooplankton perform these daily cycles to escape fish predators and to obtain their food source. Also, daily migration occurs for the prevention of solar damage (just like humans and sunburn). There is also current research testing if metabolic advantages are also a cause for these migration patterns. Furthermore, studies have looked into external changes (such as temperature, salinity, and even acidity changes) as being a reason.

Photo of zooplankton under the microscope
by Ma.C. Mingorance Rodriguez at Wikimedia.
How do these animals with hardly any external features perform these day-to-day migrations? These creatures have to be in good physical shape to out-swim the predators. Also, they have to be able to adapt to the changing temperatures due to the sun or even the temperature changes in their environment. Plus, they have to be able to swim within a large group of other zooplankton to push against the ocean factors. Lastly, the zooplankton that perform the daily migrations are physically able to do so because some have evolved a pseudopodia (aka “false feet”) or flagella (tail like structure) adaption to help them move.

Still think you are way different than a zooplankton? Well, don’t you return to a safe area at the end of the night? I’m sure you eat at certain times and not at others and the food you get is mainly from the same places (probably your refrigerator or favorite restaurant). So in the end aren’t we all just walking around to obtain the necessities we need in life, just like zooplankton? I think when it comes down to the basics yes, but humans have put their own twists on life too.


References:

1. Forward, R.B. Diel Vertical Migration: Zooplankton Photobiology and Behaviour. in Oceanography and Marine Biology Vol. 26, ed. H. Barnes and M. Barnes, Aberdeen University Press, 1988, 361- 393.

2. Haney, J.F. (1988). Diel Patterns of Zooplankton Behavior Bulletin of Marine Science, 43 (3), 583-603

3. Iwasa, Y (1982). Vertical Migration of Zooplankton: A Game Between Predator and Prey The American Naturalist, 120 (2), 171-180 DOI: 10.1086/283980

Wednesday, August 8, 2012

Baby, You Light Up My World Like Nobody Else: A Guest Post

One Direction was inspired by the brightly
shining love of the bioluminescent ostracod.
Photo by Fiona McKinlay at Wikimedia.
by Rachel Wang

You might not have guessed that the song lyrics of the band One Direction could apply to the courtship of bioluminescent marine animals, but the female ostracod crustacean (relatives of crabs and shrimp) might want to sing her heart out when she finds a bright guy to light up her world. 

This month's cover of the Journal of
Experimental Biology features a picture
of one of Trevor and Jim's ostracods!





Bioluminescent ostracods, also called “marine firefleas,” are tiny creatures (at most just 2 mm!) that live at the bottom of the ocean and have the awesome ability to light up the water in the western Caribbean with their natural bioluminescence. Males wait until it’s completely dark to put on a light show for the ladies. They secrete molecules that react with the water and produce pulses of bright blue light. To court females, males flash brightly 3-4 times in the same spot before swimming up in a spiral pattern and producing up to 16 flashes. Then they do this over and over for an hour! Talk about a bright time!

Males have three different types of courtship tactics as they compete for a mate. Males who initiate a display are described as “leading,” males who synchronize their flashes with another male are “following,” and males who stay close to another guy without doing any flashing are “sneaking.” Males aren’t just capable of all three tactics – they can also switch between tactics within seconds, even multiple times within a single 12-second-long display!

You can see an example of a light display here:
Video provided by Trevor Rivers


Jim Morin at Cornell University and Trevor Rivers previously at Cornell (now at Bowdoin College) provided an illuminating look at what affects a male’s decision to lead, follow, or sneak. Since the males only show off in the dark, Trevor and Jim used infrared video to shed some light on the situation and track each male’s movement, speed, and distance to other males. They randomly picked five males (a normal group size) and observed their behavior for 30 minutes. They looked at how much time each male spent leading, following, or sneaking, as well as the distance and angle to other males.

Pay close attention to see some followers in this infrared video:
Video provided by Trevor Rivers


The researchers found that once one male decided to be the leader and initiate a display, the other males’ choice between following and sneaking was strongly predicted by their distance to the leader – mainly vertical distance! The figure below illustrates what they found. The leader is represented by the point where the vertical and horizontal lines cross. At 8 cm above the leader, males were equally likely to follow or sneak (green area). Those more than 8 cm above the leader (the blue area) were more likely to follow, while males who were less than 8 cm above (pink area) were more likely to sneak!


This figure shows that males way above the leader (at the center of the circle) choose to
follow (i.e. "entrain"), whereas males near the leader choose to sneak. The graph on the
left (a) shows the starting position and eventual tactic of each male. The graph on the
right (b) shows where each male was when he started using his chosen tactic. Figure
from Rivers, T.J., & Morin, J.G. (2009). Plasticity of male mating behavior in a marine
bioluminescent ostracod in both time and space. Animal Behavior, 78(3): 723-734.
So why would vertical distance make a difference in picking a tactic? Trevor and Jim offer some possible explanations. Males who are closer to the leader tend choose sneakiness. Rather than wasting energy on a flashy show, they focus all their attention on snatching a female. Males who are farther away from the leader tend to follow. They decide to go for it, and synchronize their flashes with the leader to compete for the Best & Brightest Award, with the winner receiving the prize of a lovely female mate. Followers also swim farther out, which could help them intercept females approaching from the side and increase their chances of scoring a touchdown. The bottom line is that these male bioluminescent ostracods are always checking out their competition and quickly deciding on the best move!

So what can we learn from this enlightening tale? Guys, keep your friends close and your competition closer. Imitating or sticking close to the guy who’s got it all could pay off in the end. Just remember: stalking your competition? That might work for bioluminescent ostracods, but it’s not sexy by human standards.

If you’re interested in more info, check out:

1. University of Wisconsin-Lacrosse’s great, informative website on bioluminescent ostracods

2. Rivers, T.J., & Morin, J.G. (2009). Plasticity of male mating behavior in a marine bioluminescent ostracod in both time and space Animal Behavior, 78 (3), 723-734 DOI: 10.1016/j.anbehav.2009.06.020

Wednesday, July 18, 2012

Where the Wild Things Are: Amazing Animal Watching Vacations Part 4

Wouldn't you rather be here right now?
Photo by RAMDOM X at Wikimedia
Need to get away? Want to go somewhere that is both adventurous and relaxing, exotic yet relatively easy to get to? Want to see monkeys, dolphins, toucans, and iguanas in the wild? Imagine a place with long sandy beaches, a mountain view, a tropical rainforest and so many wild animals you’ll forget you’re not at a zoo... until you realize how close they really are. That place actually exists, and it is Manuel Antonio National Park in Costa Rica.

Manuel Antonio is Costa Rica’s most visited national park, and for good reason. Located on the Pacific Coast of Costa Rica, the park includes 682 hectares of beautiful beaches and lush rainforest laced with maintained trails as well as a large protected ocean reserve. It is relatively easy to get to (more on travel below) and there are a number of hotels within walking distance of the beach and park entrance.


Coatis are close relatives of raccoons, and like
raccoons, they can be pretty bold if they think
you might have food. Photo by Matt Magolan.

These white-faced capuchins are plotting to
take your snacks. Photo by Matt Magolan.
If you love animals (and if you’re reading this, I know you do), you will find yourself in a wild wonderland. White-faced capuchins run along the branches and squirrel monkeys leap through the air. Howler monkeys and countless colorful songbirds chorus in the mornings. You can search for sloths and iguanas in the trees. You can even see animals you may not have heard of, like agoutis and coatis. You can see all these animals and more from amazingly close-up. But whatever you do, don’t try to touch or feed the animals – Many of them (the white-faced capuchins in particular) have become very bold and may aggressively steal your food. A friend of mine had a granola bar grabbed right from her hand by an angry little capuchin – I don’t think she ever felt quite the same about monkeys after that.

Manuel Antonio National Park is one of the few
places in the world where you can still see an
endangered squirrel monkey. Photo by
Matt Magolan.

There are also efforts underway to responsibly manage the ecosystems of the Manuel Antonio region. The National Park limits the number of park visitors to no more than 600 per day on weekdays and 800 per day on weekends. Also, conservation projects such as the Titi Conservation Alliance and Saving Mono Tití are working hard to preserve the habitats necessary for the survival of the vulnerable squirrel monkey (mono tití in Spanish). Both of these groups are working hard to plant tens of thousands of native Costa Rican trees from Manuel Antonio eastward, where small populations of squirrel monkeys are isolated from one another by palm plantations and large resorts. When the total population of squirrel monkeys in the Manuel Antonio area is estimated under 2,000 individuals, maintaining group contact is critical to preventing inbreeding. Despite the considerable efforts and successes of groups like these, development, hunting and the pet trade still threaten this species.

Travel to Manuel Antonio is relatively simple (as international travel goes). Once you make it to San José, the capital city of Costa Rica, you can either hop on a 20 minute flight by Sansa Airlines or a 3.5 hour bus ride from the Coca Cola bus terminal. If you are feeling even more adventurous, you can rent a car to drive yourself, but be prepared to get lost, drive difficult terrain (make sure to get a 4X4) and navigate some of the most ruthless traffic you’ll ever drive in. Comparatively, the plush, air-conditioned bus is much more relaxing.

So if you are looking for a vacation idea, Manuel Antonio, Costa Rica is an animal lover’s paradise. For more information or to plan your own trip, check out some of these resources:

1) The official Manuel Antonio website
2) Go Visit Costa Rica
3) Lonely Planet
4) The Lonely Planet Costa Rica travel guide

Wednesday, June 20, 2012

The Age of Aquariums: Amazing Animal Watching Vacations Part 3

Oceans are the largest ecosystems on the planet. They produce half of the oxygen we breathe and contain 97% of the world’s water. Oceans provide a sixth of the animal protein in human diets and are the most promising source of new medicines to fight cancer and other diseases. On top of all that, they absorb about a third of the carbon dioxide emissions we produce, which helps reduce the rate of climate change. In a nutshell, we need them.


Pacific bluefin tuna return to the aquarium in the newly-transformed Open Sea exhibit at the Monterey Bay Aquarium. The Pacific bluefin is a commercially valuable species, but due to overfishing, Monterey Bay Aquarium's Seafood Watch Program has put all bluefin tunas on the "Avoid" list. © Monterey Bay Aquarium/Randy Wilder
Unfortunately, these ecosystems are vulnerable and are becoming increasingly degraded. Overfishing of many species is not only destroying populations of those species, but also the many other species that depend on them. Destructive fishing methods, pollution, soil runoff and increased water temperatures are destroying the delicate coral reef communities that serve as nurseries for a wide range of ocean life. These are not small problems in a few isolated places. For example, up to 88% of the Southeast Asian coral reefs are now threatened.

Last week we talked about the role of aquariums in teaching us about wonderful marine habitats and animals, but simply learning about these environments is not enough if we can’t keep them around and healthy for future generations. Many aquariums play a vital role in conservation and research. Here are a couple of leaders in the field:


The Monterey Bay Aquarium:

The Monterey Bay Aquarium in Monterey, California is on a mission to inspire and support ocean conservation. Their exhibits devoted to the varied habitats around the Monterey Bay include a living three-story kelp forest, a Monterey Bay Habitats exhibit, and a playful otter exhibit. The Vanishing Wildlife window shows a ground-floor view of sea turtles, sharks and tunas, all magnificent animals that need our protection if their populations are going to survive. This exhibit shows how researchers, conservationists and people working in the fishing industry work together to support these species and others.

An adult Southern sea otter that was reared by a
surrogate mother through the aquarium's Sea Otter
Research and Conservation (SORAC) program has
successfully given birth to her second pup in the wild.
©Monterey Bay Aquarium/Randy Wilder
The Monterey Bay Aquarium has an extensive Research and Conservation focus, including a dozen programs. One of these programs, the Sea Otter Research and Conservation (SORAC) program, has been studying and rescuing southern sea otters since 1984. Southern sea otters are a keystone species, eating sea urchins and other invertebrates that graze on kelp forests. Yet in the early 1900s, sea otters were hunted until only about 50 otters remained along the California coast. Thanks to protection under international treaty and support by programs like SORAC, their numbers have grown to nearly 3000.


The New England Aquarium:

The New England Aquarium in Boston, Massachusetts (which uses the slogan “Protecting the blue planet”) has over 70 exhibits featuring animals from around the world. But they also have a number of programs to protect species and their habitats, rescue and rehabilitate wildlife, support research on wildlife medicine, research the effects of climate change, and support sustainable fisheries.

The New England Aquarium Endangered Species and Habitats Program has been working to protect and preserve ecosystems and conserve threatened animal species for over 20 years. Their conservation projects span the world and are all guided by understanding the biology of the system and collaborating with people that are affected by it. For example, Project Piaba has been working with Amazonian fishermen in Brazil since 1989 to create sustainable fisheries. Not only does this approach improve the health of the animal species and their habitats, but it helps the local people develop a more stable income by using their natural resources in a more sustainable way.

Coral reefs near Enderbury Island, Phoenix Islands Protected Area (PIPA)
©New England Aquarium/Dr. Randi Rotjan
Another great example is the preservation of the Phoenix Islands Protected Area (PIPA). Since their first visit in 2000, PIPA is now one of the largest marine protected areas in the world and an irreplaceable research site. Research at PIPA focuses on exploration, connectivity within the marine ecosystem and reef resilience.

Do you want to know what you can do to help protect our ocean habitats? The Live Blue program has a list of Ten Ways You Can Make a Difference.

For information on more great aquariums, check out last week’s post. For other animal watching ideas, go here and here.

Want to know more about ocean threats? Check these out:

1. Burrows MT, Schoeman DS, Buckley LB, Moore P, Poloczanska ES, Brander KM, Brown C, Bruno JF, Duarte CM, Halpern BS, Holding J, Kappel CV, Kiessling W, O'Connor MI, Pandolfi JM, Parmesan C, Schwing FB, Sydeman WJ, & Richardson AJ (2011). The pace of shifting climate in marine and terrestrial ecosystems. Science (New York, N.Y.), 334 (6056), 652-5 PMID: 22053045

2. Sylvia Earle’s book The World is Blue: How Our Fate and the Ocean’s Are One

Do you have a favorite aquarium? Tell us below and I might cover it in a future post.

Wednesday, June 13, 2012

The Age of Aquariums: Amazing Animal Watching Vacations Part 2

Below the ocean’s surface is a world more mysterious than the dark side of the moon and with more animal diversity than the Amazon rainforest. Over 70% of our planet is covered in ocean, yet fully 95% of our oceans remain completely unexplored. But we do know that the habitats animals adapt to are more vast than the open ocean (In fact, many more animals are by the coasts than out in the open ocean). There are shallow sunlit coastal waters and deep dark ocean trenches, coral reefs, estuaries, and even volcanoes! This variety in habitats has resulted in an amazing variety of some of the strangest and most mesmerizing animals on Earth. The best way to get a close look at them is to go to an aquarium, and there are many breathtaking aquaria to choose from. Here are a couple aquaria with exhibits that feature local habitats and animals (with more to come in future posts):


A cartoon of a cross-section of dark-water habitats. These places are really difficult to
get to.  Luckily, we can appreciate their residents at aquariums around the world!
Figure from Orcutt et. al, (2011) Microbiology and Molecular Biology Reviews paper.


The Aquarium of Western Australia (AQWA) in Perth:

The Aquarium of Western Australia (AQWA) in Perth, Australia has over 40 exhibits that focus on the amazing marine wildlife in the habitats off the Western Australia coast. Visit the Shipwreck Coast (Australia’s largest aquarium), the DANGERzone (where you can see some of the world’s deadliest sea creatures from behind protective glass), or the Marmion Marine Park (where you can interact with live animals in the touch pool).

Walk the coral reef exhibit for just $20! Photo by AQUA.
Are you one of those people that watch the divers in an aquarium exhibit and wish you could do that? You can at AQUA! If you want to get even more immersed in your aquarium experience, AQUA has awesome organized adventures. For just $20, you can walk underwater through one of the world’s largest coral reef exhibits (even if you don’t have diving experience). For a bit more, you can experience a guided snorkel or dive in AQUA’s shipwreck coast aquarium, coming face-to-face with sharks, stingrays, turtles and fish. And on Wednesdays, AQUA and Mills Charters run whale watching tours with guaranteed whale sightings.

AQUA has also taken an active role in animal research and conservation. The AQUA foundation is a non-profit organization that funded the development of satellite tags used to record the movements of great white sharks. This project discovered many new things about great white shark behavior, including that although they are capable of diving at least 570 meters deep (that’s over 6 football fields!), 80% of their time is spent within 10 meters of the surface! The AQUA foundation’s current project is the development of a specialized facility for the rehabilitation of sick and injured marine animals with the goal of returning them to the wild.


The Georgia Aquarium:

The Georgia Aquarium in Atlanta, Georgia, is the world’s largest aquarium, featuring more animals than any other aquarium. It has more than 60 exhibits, each designed to inspire, entertain and educate. The Ocean Voyager exhibit is the world’s largest single exhibit aquarium with 6.3 million gallons of water and featuring whale sharks, manta rays, sand tiger sharks, zebra sharks, humphead wrasse, spotted wobbegong sharks, bowmouth guitarfish, tasseled wobbegong sharks, leopard whiptail rays, and sandbar sharks. Whale sharks, the largest fish in the world, are especially extraordinary because you won’t find them in any other aquarium outside of Asia. Another notable exhibit is Georgia Explorer, the most interactive exhibit at the Georgia Aquarium featuring animals from local Georgia habitats. Here you can touch bonnethead sharks, cownose rays, and horseshoe crabs.

Whale sharks can grow to the size of a school bus!
Photo by the Georgia Aquarium.

The Georgia Aquarium also has a number of unique opportunities. If you are interested in pursuing a career in aquariums or even just seeing how they work, join a behind-the-scenes tour. Or put on a wetsuit and jump in the water with beluga whales and their trainers or swim with sharks in the Georgia Aquarium’s Ocean Voyager exhibit. If you’re looking for a memorable family experience, spend the night in an aquarium sleepover.

The Correll Center for Aquatic Animal Health is a state-of-the-art facility used through a partnership with the University of Georgia Veterinary Teaching Hospital to provide the Georgia Aquarium with a complete aquatic animal health program while training veterinary students, residents, and interns. It is the only integration of a veterinary teaching hospital within an aquarium. The Georgia Aquarium also supports, conducts and leads research trips. If you would like to meet Georgia Aquarium’s whale shark research team while participating in a whale-shark eco-tour in the Gulf of Mexico, they have trips planned for July 13-18 and August 24-29.

For more amazing animal watching vacation ideas, check this out. And for a relaxing animal watching stay-cation, try this. Tell us below about your favorite aquarium and I’ll cover it in a future post.

Want to know more about oceans and their ecosystems? Check these out:

1. GRAY, J. (1997). Marine biodiversity: patterns, threats and conservation needs Biodiversity and Conservation, 6 (1), 153-175 DOI: 10.1023/a:1018335901847

2. Orcutt, B., Sylvan, J., Knab, N., & Edwards, K. (2011). Microbial Ecology of the Dark Ocean above, at, and below the Seafloor Microbiology and Molecular Biology Reviews, 75 (2), 361-422 DOI: 10.1128/MMBR.00039-10

3. Zeppilli, D., Mea, M., Corinaldesi, C., & Danovaro, R. (2011). Mud volcanoes in the Mediterranean Sea are hot spots of exclusive meiobenthic species Progress In Oceanography, 91 (3), 260-272 DOI: 10.1016/j.pocean.2011.01.001

Wednesday, May 30, 2012

Where the Wild Things Are: Amazing Animal Watching Vacations Part 1

School is winding down, the weather is beautiful and it is time to start thinking about summer vacation! Do you love watching and learning about animals? Then consider one (or more) of these animal watching vacations:


Go to a zoo:

Get a great view of a Siberian tiger at the Toronto Zoo.
Photo by Ber Zophus at Wikimedia.
Zoos allow you to explore the world in a single day: Meandering paths lead you past animals from across the globe. Lions, and tigers and bears, Oh my! But don’t forget the primates, reptiles, birds, and sea mammals. No matter what your animal fancy, you can likely see it at the zoo. Walk through the zoo reading the posted information on each species. Or sit at your favorite exhibit and focus on a single animal. Participate in an educational activity like touching and feeding animals with their keepers, a course, or even a sleepover. And while you are there, learn about how the zoo contributes to animal well-being: Many zoos provide research opportunities to study animal behavior and health (such as the friendship study in crested macaques), support captive breeding programs to restore threatened wild populations, rehabilitate injured or abandoned wild animals, and support habitat conservation.

If you have a local zoo, see what it has to offer. And if you like to travel, consider the San Diego Zoo, the Smithsonian National Zoological Park in Washington, DC, the Singapore Zoo, the National Zoological Gardens of South Africa, or the Toronto Zoo. All of these zoos are well-respected institutions that promote animal conservation and have fantastic educational programs.

Learn more about some of these zoos here.


Go to an aquarium:

Interact with dolphins at the National Aquarium.
Photo by the National Aquarium at Wikimedia.
Aquaria are places of wonder and tranquility. Learn about teleost fish, sharks, rays, crustaceans, octopuses, jellyfish, coral, and many more species that inhabit our oceans, lakes, and rivers. Relax while watching the graceful movements of sea animals and marvel at the agility of apex predators at feeding time. Learn about the many aquatic habitats our planet supports and the amazing diversity of the animals that live in them. Like zoos, aquaria provide research opportunities (such as the individual recognition study in octopuses), support conservation, and have fun educational programs and activities.

If you get a chance, you may want to check out the National Aquarium in Baltimore, the Georgia Aquarium, the Monterey Bay Aquarium, the Aquarium of Western Australia (AQWA) in Perth or L’Oceanogràfic in Valencia, Spain.


Learn more about some of these aquariums here and here.



Take a wildlife tour:

See breathtaking animals in their natural habitat
from the security of your guide's vehicle.
Photo by Brian Snelson at Wikimedia.
If you want to see wild animals in their natural habitats, experienced guides can help you find animals that are often elusive while keeping you safe and preserving animal habitats. Guides can give detailed information about the animals you encounter and can often tell thrilling tales of their own personal experiences. Some even provide lunch.

Maybe your dream has always been to go on an African safari. Consider the Safari Serengeti trip in Tanzania by Overseas Adventure Travel, where you can see animals like Thomson’s gazelles, buffalo, and elephants. Or participate in a North American safari in Yellowstone National Park with Wolf & Bear Safaris by the Yellowstone Safari Company. If a Northwoods flavor suits you, check out Northwoods Outfitters Moose Wildlife Safari in Maine. Or take a Hawaiian vacation and go whale watching with Ultimate Whale Watch in Maui. For a scientific marine vacation, go on an Educational Shark Encounter trip with Fish Finder Adventures based in Ocean City, Maryland. Whatever your dream animal watching trip, a guide can help you bring it to life.


Go somewhere wild on your own:

Kayak by thousands of birds in the Everglades
(but don't forget your anti-bird-poop-hat).
Photo by Matt Magolan.
If you are an independently minded and experienced adventurer, the world is awaiting. And if you want to increase your chances of observing spectacular wild animals in nature, you should go somewhere that has a lot of spectacular wild animals… like Manuel Antonio Park in Costa Rica, where you can see four monkey species, two iguana species, two sloth species, coatis, toucans, vultures, parakeets, and hundreds of other species on a single hike. Or kayak in the Everglades National Park in Florida, where you can see crocodiles, dolphins, manatees and over 350 species of birds. Or SCUBA or snorkel the coral reefs of the Cayman Islands and feel like part of the community of coral, sponges, tropical fish, rays, sharks, and sea turtles.

Learn more about some of these trips here.


We share this world with countless amazing animals. Find your own way to experience, learn about and appreciate them. I’ll go into more detail on these vacations and others in future posts, so comment below and let us know what animal watching vacations you have done and what you are interested in doing in the future.