12/13/15

Reptile Kingdom Resides in Painting Workshop

Dec.6, 2015
Text by LAN Lianchao
Video by LAN Lianchao & CHANG Zhuojin & SHI Xinyue & LIU Yuting

Hundreds of transparent boxes are piled up against the wall, with simulated wild environments. The residents of those cubical rooms have watched the day and night of the painting workshop, ARTTRA, for seven years.

The vivarium belongs to a painter, Herman Chan, 41, who has over 100 reptiles from about 50 species.

“Maybe you can not find a second painting workshop with so many reptiles in Hong Kong,” he says.

Chan’s pets attract people who learn painting in a way of improving their ability of observation. Reptile knowledge is a bonus for curious students.

Chan says he collects and breeds various species of reptiles on purpose. “I enjoy taking care of them technically,” he says.

The first reptile owned by Chan was a salamander when he was in the primary school. Since then he has never stopped.

Chan used to raise his reptiles at home, afraid of customers’ resistance against them. He says he hopes to stay with them more, not only the time after work.

Not until he took a chameleon to the studio did he find the charisma of his pets. Children are really into it and inspired to watch the detailed of the animal, Chan says.

Meanwhile Chan tells them chameleons change color due to the temperature, humidity or light, not the background colors thought by many people.

“The studio is a perfect combination of my hobby and job,” Chan adds. “It is an incubator for my reptiles and my painting.”

Chan Tsz Yin Andrea, 5 yrs old, Hong Kong, Arttra.

With the Frogs Are Green annual children’s art contest deadline approaching, you can see how engaged the young students are by learning about amphibians and reptiles, seeing them up close, and then expressing themselves through art. I’m thrilled that Herman’s students entered our annual contest!

This blog was originally posted on https://lanlianchao.wordpress.com Frogs Are Green has permission to repost it.

08/3/15

Will the Fungus Killing Salamanders Come to the US?

There is nothing more important right now to the survival of Salamanders than the United States stopping the importation of them from Europe and Asia.

From the New York Times article, “Importing Both Salamanders and Their Potential Destruction.”

“You would think there would be something in place,” said Vance T. Vredenburg, a biologist at San Francisco State University. “We really need a government agency at some level to take action and do something.”

…The pet trade brings huge numbers of salamanders into the United States. Fish and Wildlife Service records show that about 780,000 salamanders were imported from 2010 to 2014. Dr. Vredenburg and his colleagues found that 98 percent of the imported animals were native to Asia.

We have been watching Chytrid Fungus, or Batrachochytrium dendrobatidis (Bd for short) wipe out many species of frogs. Humans have helped spread this disease around the world and now we have an opportunity, if we act quickly to help the salamanders.

We’re worried about the Asian fungus that causes the disease “Bsal” which has already reached Europe, wiping out 96 percent of fire salamanders in the Netherlands. Now, researchers have determined that the fungus will spread like wildfire if it reaches North America, and they’re calling for an immediate ban on all salamander imports.

Fire Salamander from Wikipedia Commons.

Below are a series of articles on this topic from the past week:

NPR >> Scientists Urge Ban On Salamander Imports To U.S. To Keep Fungus At Bay

UC Berkeley >> Scientists urge ban on salamander imports to fend off new fungus

The Verge >> North America’s salamanders threatened by bloody skin disease

Tech Times >> Bsal Fungus Can Wipe Out U.S. Salamander Population: What To Know

06/18/13

SALAMANDERS IN CRISIS! An Overview of Why Salamander Conservation is Needed

Guest blog by Matt Ellerbeck, founder of Save the Salamanders

Although they are rarely given much thought, and often overlooked when they are, salamanders are in a terrible crisis. Around half of all the world’s salamander species are listed as threatened by the International Union for Conservation of Nature (IUCN). These species are all facing a high risk of extinction. A further 62 species have been designated as near-threatened with populations rapidly dwindling. This means they are quickly getting closer to threatened status and to the brink of extinction. Sadly for some salamanders it is already too late, as both the Yunnan Lake Newt (Cynops wolterstorffi) and Ainsworth’s Salamander (Plethodon ainsworthi) have already gone extinct.

Salamanders have been on the earth for over 160 million years, and the terrible state that they now find themselves in is due to the detrimental acts of humans. Even those species that are not experiencing population declines deserve attention and conservation to ensure that they remain healthy and stable.

One of the biggest issues affecting salamanders is the loss of their natural habitat. Many areas that were once suitable for salamanders to live in have now been destroyed for developmental construction and agriculture. Habitats of all kinds are being lost at an alarming rate. Wetlands are drained, forests are logged and cut down, and waterfronts are developed. Salamanders are literally losing their homes and they are losing them rapidly. The expansion of urban areas threatens the suitable habitats that still remain.

Where natural habitats do still exist, they are often fragmented or degraded. Fragmentation occurs when healthy areas of habitat are isolated from one another. These fragmented areas are known as habitat islands. Salamander populations are affected since gene flow between the populations is prevented. This increases the occurrence of inbreeding, which results in a decrease in genetic variability and the birthing of weaker individuals.

Fragmented populations where inbreeding occurs often ends in a genetic bottleneck. This is an evolutionary event where a significant percentage of the population or species is killed or otherwise prevented from reproducing. Habitat fragmentation is also harmful because it often eliminates crucial requirements in the area which are critical to the survival of salamander populations. Such areas include spaces that can be utilized for thermoregulation, prey capture, breeding, and over-wintering. Without such habitat requirements populations dwindle.

Breeding sites, often in the forms of vernal pools are particularly important. The loss of such areas in the form of habitat destruction can negatively affect the entire population and its reproductive output. According to the Committee on the Status of Endangered Wildlife in Canada (COSEWIC), there is some evidence that certain salamander species have individuals that return to the pond in which they were born once they reach maturity. Therefore, destruction of a breeding pond may result in loss of the entire population returning to that site. Habitat complexity is also important as it offers shelter to salamanders from both predators and human persecution.

Degradation occurs when the natural habitat has been altered and degraded to such a degree that it is unlikely that any remaining salamanders species would be able to survive. Developments and agriculture near fragmented habitats put salamanders at serious risk. As amphibians, salamanders have extremely absorbent skins. Industrial contaminants, the introduction of sedimentation into waterways, sewage run off, pesticides, oils, and other chemicals and toxic substances from developmental construction sites and human settlements can all be absorbed by salamanders. This can quickly lead to deaths. They can also cause widespread horrific deformities to occur. A study conducted at Purdue University found that out of 2,000 adult and juvenile salamanders 8 percent had visible deformities.

According to Save The Frogs, Atrazine (perhaps the most commonly used herbicide on the planet, with some 33 million kg being used annually in the US alone) can reduce survivorship in salamanders. Many products are sold with the claim that they are eco-friendly. However, these should be viewed with caution. For example, according to N.C Partners in Amphibian and Reptile Conservation, Roundup and many other surfactant-loaded glyphosate formulations are not labeled for aquatic use. When these formulations are applied to upland sites according to label instructions, the risk to surfactant-sensitive species is considered low. While this may be the case for fish it does not necessarily apply to amphibians. Salamanders that breed in water also routinely use non-aquatic areas and could easily be exposed to glyphosate formulations that contain harmful surfactants through direct application and not just incidental drift.

Habitat destruction and degradation can also effect the availability of prey items, causing unnatural declines in appropriate food sources.

Habitats are often isolated and cut off from one another by the roads and highways that now run through them. Countless numbers of salamanders are killed on roads and highways every year when they are hit by vehicles. Salamanders that are migrating to breeding and egg-laying sites often must cross over roads to reach such areas. Here many of the mature members of the breeding population are killed. Removing members of the breeding populations greatly limits reproductive output, this makes it incredibly hard for salamander numbers to rebound.

Roads present an additional problem because they represent a form of habitat loss. The roads that run through natural areas also fragment the existing populations, drastically making them smaller in size. This limits the gene flow and genetic diversity between the isolated populations on either side and this greatly increases the chances of extirpation. When salamanders attempt to cross roads to travel between the populations, or to critical breeding/birthing sites it greatly increases their chances of being hit and killed by vehicles.

The Wetlands Ecology and Management (2005) population projections for spotted salamander (Ambystoma maculatum) life tables imply that an annual risk of road mortality for adults of greater then 10% can lead to local population extirpation. Unfortunately, it is estimated that mortality rates can often be as high as 50 to 100%, which means populations are at extreme risk of extirpation and extinction due to road mortality. Wyman (1991) reported average mortality rates of 50.3 to 100% for hundreds of salamanders attempting to cross a paved rural road in New York State, USA. Given that this figure pertains to a rural area from over a decade ago, it is fair to assume that even higher mortality rates occur as their has been in increase in cars and roads over the years. Reducing road mortality is paramount to preserving salamander species.

Being hit and killed by vehicles is not the only threat that roads create for salamanders. Chemical run-off from vehicles contaminate roadside ditches and pools. These sites are often utilized by salamanders for breeding and birthing. According to Steven P. Brady (2012) survival in roadside pools averaged just 56%, as compared to 87% in woodland pools. Thus, an average of 36% fewer individual embryos survived to hatching in roadside versus woodland pools.

Salamanders are also threatened when they are harvested from the wild. Salamanders are taken for the pet trade, for food markets, and for use as fishing bait.

There is much about salamanders that scientists do not know. Aspects of the biology, ecology, and lifestyles of many species is a mystery. This undoubtedly means human interference is negatively affecting salamanders in ways in which we don’t even know. The intricate relation between all species and the vital roles they play within eco-systems is also being altered. Such alterations can have serious consequences to not just salamanders, but many other animals as well (including humans).

To find out how you can help please see: www.savethesalamanders.com

About Matt Ellerbeck and Save the Salamanders:

Over the years he has observed hundreds of salamanders in their natural habitats. This interest eventually led to Matt becoming a Salamander Advocate and Conservationist.

Matt also has considerable experience and expertise in regards to salamanders and their care. He has cared for and observed numerous species. These include forms belonging to the genera Plethodon, Ambystoma, Necturus, Notophthalmus, Hypselotriton, Pleurodeles, Taricha, Salamandra, Hemidactylium, Eurycea, Pseudotriton, Amphiuma, Siren, and Paramesotriton. Matt is also in possession of a license to keep Specially Protected Amphibians in Captivity for the purpose of education, which has been granted by the Ontario Ministry of Natural Resources.

Along with wildlife preservation, Matt also believes in the ideals of Environmentalism, Deep Ecology, Biocentrism, Ecocentrism, and anti-Speciesism; and draws from these various movements to help salamanders.

Matt is committed to continuing his efforts to help salamanders. His love and concern for these animals is second to none!

10/18/12

Axoloti: Treasured by Ancient Aztecs and Modern Scientists

We recently read an alarming statistic: it’s possible that only one hundred axolotl salamanders (Ambystoma mexicanum) exist in the wild. Why should anyone care that a strange Mexican salamander may soon be extinct in its native habitat?

It turns out that this salamander is a remarkable creature. It intrigued the ancient Aztecs because of its strange looks and regenerative powers and was believed to be a manifestation of the god Xolotl, who like Charon in Greek mythology, was the ferryman of the dead to the underworld. To the Aztecs, the salamander’s regenerative power was like that of the lake system that sustained them.

Most salamanders are able to regenerate body structures to some extent. But the axolotl is unique in that it can regenerate not only limbs, but also its jaws, spinal cord, and more. After these body parts regenerate, there is no evidence of scarring. Axolotls can even receive transplanted organs from other individuals and accept them without rejection. They are one thousand times more resistant to cancer than mammals. This, of course, has made them of great interest to scientists who study them in captivity.

The axolotl is also one of the few animals that exhibit neoteny, that is, it retains its juvenile characteristics, such as the external gills, which gives the creature its cute looks.

By th1098 (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

But this animal, despite its “smile,” has a lot to be unhappy about. Its only habitat is the canal system of Xochimilco in Mexico, which is what is left from what was an extensive lake and canals that connected most of the Aztec settlements of the Valley of Mexico. These canals, along with artificial islands called chinampas, attract tourists and other city residents who ride on colorful gondola-like boats around the hundred or so miles of canals. This canal and chinampa system, as a vestige of the area’s pre-Hispanic past, has made Xochimilco a World Heritage Site.

Unfortunately the canals are polluted with both garbage and fecal matter, as well as industrial fertilizers. Other problems include the damage by introduced plant and animal species. Carp and tilapia fish, for example, introduced in the 1960s, eat the eggs of the axototl.

The axolotl faces long odds for survival. It seems that only a complete regeneration and clean up of the historic canals will save this animal that is often considered a metaphor for the soul of Mexico.

Information for this post came primarily from an article and blog post from the LA Times and a Scientific American blog post. Note: the axototl is also know as the ajolote.

04/7/10

Vernal Pools: Woodland Nurseries for Frogs and Salamanders

This past weekend, I went hiking with my family in Harriman State Park in New York. We’ve had a very wet spring—well, actually it sometimes seems as if we’ve been living in a rainforest. It’s possible that all this rain will means lots of frogs and toads this summer.

While hiking we found a swamp and listened to a wonderful chorus of spring peepers and (we think) Eastern American toads.

My son Jeremy listening to a chorus of spring peers, Surebridge Swamp, Harriman State Park, New York

My son Jeremy listening to a chorus of spring peepers, Surebridge Swamp, Harriman State Park, New York

We also saw lots of vernal pools, bodies of water that appear in the spring and last from two to three months before they dry up in the summer. Some types of amphibians, crustaceans, and other wildlife need these pools for breeding, hatching eggs, or as a nursery while they are young. Because they are temporary, vernal pools do not contain fish (which eat tadpoles and larvae).

When you hike by vernal pools, they don’t look like much. In fact, my sneakers got soaked as I tried to jump over one. Yet they are of critical importance to wildlife. I’ve noticed, however, a lot of comments on environmental blogs that read something like this, “Only treehuggers would want to save these mud puddles!” Yet wood frogs, some species of salamander, and fairy shrimp need these “mud puddles” in order to survive. Every year hundreds of acres of wetlands are lost (usually forever) to commercial or residential development. According to the Ohio Vernal Pool Partnership

These usually small, but very dynamic wetlands fill with water, blossom with life and host a cacophony of sounds and a plethora of life forms every spring, only to disappear into the forest floor every autumn…. A vernal pool is a place where a good naturalist can weave many fascinating stories about the amazing life forms, adaptations, and life histories of its inhabitants, and demonstrate it by a single swoop of a dip net! Vernal pool is a miniature, fascinatingly complex and fragile world, with all of its drama played out every year close to our homes, and yet most of us have never witnessed it. [Ohio Vernal Pool Partnership].

: Salamanders and woodfrogs migrate from their wintering sites to vernal pools for breeding when the conditions are right, courtesy of The Vernal Pool Association