This is the second post about the newest animals to appear during the Aquarium's Live Animal Presentations. Get up to speed on Eastern box turtles in this previous post.

Road separating habitat
Although they have a variety of habitats, box turtles greatest threat is habitat loss or fragmentation.


Eastern box turtle. Photo courtesy Jarek Tuszynski via Wikimedia Commons

Fragmentation occurs when habitats are separated by land that humans have developed. The fragmented habitats tend to be very small, resulting in a loss of biodiversity. When confined to smaller areas, turtles may have a difficult time finding food or mates and as a result may suffer from inbreeding and other genetic problems. Massachusetts alone loses about 40 acres of natural habitat per day to development (Mass Audubon Study from 2003).


Photo courtesy Tysto via Wikimedia Commons

Roads are one of the greatest dividers of habitats. Box turtles sometimes use less-than-ideal routes to avoid roads which may increase the risk of predation. Many female turtles looking for nesting habitat cross roads and are killed by cars, reducing the breeding population. One solution to the problem of habitat fragmentation is to link the fragments by preserving or planting corridors of native vegetation. In the case of roads, underground tunnels can be dug to connect habitats. Do you think this is a good
idea? Can you think of other solutions? Here are some more ideas to help turtles…

• Restore vegetation (like your yard) to a more natural state. Use native plants!
• Mow only in the hot afternoon, when turtles are less likely to be out
• Avoid using herbicides, especially on fruiting plants.
• Keep pets on leashes
• Protect habitat from development: contact the Wildlife Land Trust or Nature Conservancy to help purchase and preserve land where box turtles occur
• _______________ (insert your idea here!)
  

Reproduction
Box turtles reach sexual maturity at about 5 to 10 years old. In Massachusetts, females usually don’t lay their first clutch until 14 years of age. Females can store sperm for up to 4 years! They sometimes travel up to a mile to find suitable habitat and lay between three and six eggs each spring in a shallow nest. The eggs are left unguarded and hatch in summer to early fall. Over the span of one lifetime, females lay hundreds of eggs, but only two or three will survive to adulthood. These eventually replace their parents in the population. However if box turtles are removed from the wild, this reduces the breeding population, creating a decline in total population numbers.


Photo via Wikimedia Commons

Boy or Girl?

• Male box turtles have wider tails, more flattened shells, and dark orange or red eyes.
• Females box turtles have brown or light orange eyes.

Because box turtles are long-lived (30-50+ yr. lifespan), slow to mature, and have few offspring, their population is vulnerable to habitat disturbances, motorized vehicle kills, high levels of predation, and loss of individuals through the pet trade. Eastern box turtles are listed as a Species of Special Concern in Massachusetts and are protected from commercial trade under CITES (Convention on International Trade of Endangered Species of Wild Flora and Fauna).

They are also being protected by YOU, when you share what you've learned about these unique turtles and inspire stewardship. Good Job!

Behold the Eastern Box Turtle (Terrapene carolina carolina), our newest LAP animal! 



This type of turtle is one of only two species of box turtles found in the US (the other is called ornate or western box turtle) and it is also the most common terrestrial turtle found in the eastern half of the US. Box turtles are unique for their highly specialized super-duper protective shell. The plastron has a hinge that can close up like a door so that its legs, tail, head and neck can be safely tucked inside out of a predator’s reach.



Predators
Box turtle predators include skunks, raccoons, minks, dogs, snakes and rodents. Although these turtles have the unique hinged protection the population of predators is booming, increasing the chance of turtle predation. Predators such as raccoons, skunks, and rodents are benefiting from the availability of additional food sources such as garbage, bird seed and pet food.

Diet
Box turtles have a varied diet including insects, worms, slugs, lizards, berries, vegetable matter and carrion. They can even eat mushrooms that are toxic to humans. In fact, some folks have been poisoned by eating the flesh of box turtles that consumed toxic mushrooms. These turtles are also famous for their impact on the germination of the may-apple plant. May-apple seeds ingested by turtles have about a 38% germination rate, whereas un-digested seeds only have an 8.5% success rate. Box turtles, which are the may-apple’s main seed distributors, are able to reduce the thickness of the seed coat allowing germination to take place more easily. The may-apple root is being studied to use as a possible treatment for cancer.



Habitats Box turtles are often found in forests, fields, thickets, marsh edges and bogs. When they’re feeling adventurous, they sometimes travel to shallow water at the edge of ponds and streams. In the heat of the summer, these turtles will wedge themselves into the soil surface to help retain moisture while they rest. In winter, box turtles hibernate in loose soil at a depth of about 2 feet, or sometimes under leaf litter, stump holes or mammal burrows. Box turtles have developed a tolerance for freezing similar to wood frogs, where the liver production of glucose acts like antifreeze. They are capable of surviving gradual partial freezing for a few days, but a sudden cold snap could kill them.


There much more to learn about the Eastern box turtle, like some of the challenges they're facing in the wild and what you can do to help them. Stay tuned for Part II of LAP: Eastern Box Turtle!

As you approach the shiny, moving wall of herring that inhabit the Schooling Exhibit in the Aquarium's Thinking Gallery, you may quickly find that it's pretty difficult to focus on just one fish at a time. In fact, that's exactly the point. Take a look:



It's an effect that can be almost hypnotic to watch. Here's a frozen frame that makes it possible to pick out individual fish:



Groups of schooling fish, like the blueback herring in this exhibit, can coordinate their movements to make themselves look like one big, shimmering blur. This makes it very hard for predators to pick out one particular fish and attempt to chase it down. So, often, all a predator can do is just to swim into the group, mouth open, and hope for the best--not the most effective, or energy-efficient, of tactics.

The adaptations that make schooling behavior possible are very interesting, and almost amount to a special sixth sense for these fish. Check back soon to learn more.

-Tim

One way that visitors can get up close and personal with an Aquarium animal is to attend a Live Animal Presentation—or as we educators abbreviate it to, a LAP. Interpreters bring an animal from behind the scenes, showcasing that animal during a formal talk. A myriad of animals get their moment in the spotlight-anything from jellies, horseshoe crabs, turtles, toads and snakes!

Teen intern Victor with the LAP LOB

An animal that is featured a lot during these presentations is one that is close to the New England psyche: the North American lobster! In Visitor Education jargon, that’s a LOB. This animal, common to many seaside restaurants, is also a common exhibit animal throughout the Aquarium and is one that visitors like to see up close. It does take a little bit of preparation to get the lobster ready to go!

Getting the container set for the lobster

Most of our live animal presentation animals are kept behind the scenes. Once the interpreters are in the area, they need to prepare the holding container that the animal will be shown in. For the lobsters, that involves cold water, ice packs and an aerator to keep oxygen amounts at peak levels! Once the container is set; it’s an elevator ride downstairs to the main stage and then show time for both the lobster and the educators!

Teen interns Destiny, Victor and Volunteer Laura get ready to present

The particular lobster the educators brought out for this presentation is a fan favorite; can you guess why?

LAP lobster for the day-cool colors!

Visitors are completely blown away by this lobster’s unique coloration! Lobsters get their shell color from their diet and their genetics; this one has particularly unique DNA that causes its shell to be two different colors split right down the middle! It’s a pretty special lobster and one that visitors can only see during a LAP.

Some young visitors get a close-up view

In addition to the lobster, the educators bring down some biofacts or tools that are used in the lobster industry.

Tools of the trade-the LAP trade!

Visitors are allowed to touch them, pick them up and take pictures with them. When was the last time you were able to touch a pair of 19 pound lobster claws?

Some BIG claws

So next time you are at the Aquarium, check out the daily schedule to see when the next LAP is happening. It may or may not be the lobster featured today, but it will be always be a neat experience to be that up close to one of our Aquarium animals!

Any questions? Meet us in the Blue Planet Action Center, we'll be happy to answer your questions about our amazing live animals!

-Jo

Jellies are found in a number of areas around the Aquarium. You can find them on both floors of the West Wing (the same area where you can find our new Trust Family Foundation Shark and Ray Touch Tank), in a number of behind-the-scenes areas and also on the second floor in the Thinking Gallery. While the species on display are known to change, we currently have a beautiful species known as flower hat jellies (Olindias formosa).



These intricate animals are found naturally off the coast of Southern Japan, Brazil and Argentina. They are thought to be quite rare, but their conservation status is not currently known. While they don’t move around that often, they certainly can. Like all true jellies, or cnidarians, they have stinging cells called nematocysts. A flower hat jellies’ sting is painful, but is usually non-lethal to humans. You can read more about jellies on a previous post.



Flower hat jellyfishes, photo courtesy Fred Hsu via Wikimedia Commons

These jellies eat mainly small fish and crustaceans. Here at the Aquarium they are fed live zebrafish. There is no set feeding schedule, so getting to see them fed is just luck of the draw (as a hint, they are at varying times on Saturday, Tuesday and Thursday). It’s a pretty interesting feed. Check out the video below to see how it works!




See you in the galleries!

-Sam