Navigation Links
Taking America's rarest snake back to the woods
Date:5/7/2012

On May 1, USDA Forest Service, U.S Fish and Wildlife Service, Louisiana Department of Wildlife and Fisheries, the Memphis Zoo, and other partners released seven young Louisiana pine snakes on a restored longleaf pine stand in the Kisatchie National Forest in Louisiana. The release is the fourth in 2 years, part of a plan to restore a very rare snake to its range in Louisiana. Last year the partners released 20 newly hatched snakes; this year's snakes are 6 months old and about 3 feet long.

Four to 5 feet long as an adult and covered with a striking pattern of black, brown and beige, the Louisiana pine snake is a rare sight in its native range in east-central Texas and across Louisiana. Craig Rudolph, Forest Service Southern Research Station research ecologist and a member of the reintroduction team, has monitored the species for decades, and concurs with other herpetologists that it well may be one of the rarest snake species in the United States. Snakes released for the restoration effort are hatched and raised in zoos, and are the offspring of Louisiana pine snakes captured from the wild.

Already listed as threatened in Texas and a candidate for listing under the Federal Endangered Species Act, the Louisiana pine snake population has declined because of alterations to the its native pine longleaf pine habitat and that of its prey.

A nonvenomous species, the Louisiana pine snake spends most of its time underground in burrows of its favorite prey, the Baird's pocket gopher. The ideal habitat for both species consists of dry, sandy-soiled ridges covered with longleaf pine trees and an open understory of the grasses and forbs the pocket gophers feed on. This habitat largely disappeared due to commercial logging in the late 19th and early 20th centuries and subsequent fire suppression.

"Without fire, these upland pine savannahs rapidly develop a midstory that shades out the grassy understory that pocket gophers need," says Rudolph. "The release site on the Kisatchie, which was intentionally restored for red-cockaded woodpecker habitat, should also support pocket gophers and Louisiana pine snakes."

Only time will tell whether the Louisiana pine snake can be sustainably restored to longleaf pine ecosystems in its native range.

Researchers implanted each of the snakes released on May 1 with a passive integrated transponder (PIT) that allows them to be tracked by recorders installed on the site. "So far we've not had much success with the recorders, which are dug into the ground in four places on the release site," says Rudolph. "We've recorded activity in the first weeks, but nothing later on. This is not unexpected, since these snakes have a large home range and probably leave the immediate area. We need to get good population estimates for the areas we've released in, but the only way to get data is by trapping, which is very time-consuming and expensive."

The animal's biology presents another constraint to its survival. While most other snakes produce large clutches of eggs, the Louisiana pine snake lays only three to five eggs, and in captive breeding programs, sometimes only one or two eggs per clutch hatch. This low reproductive rate means that the species might not recover quickly in the wild. Rudolph worries that breeding programs, which rely on the progeny of only 16 founder individuals caught in the wild, may be producing snakes that are not genetically diverse enough to survive when released.

"In the best-case scenario, there would still be Louisiana pine snakes out there that we've never caught that can breed with the released snakes," says Rudolph. "We have traps operating for thousands of trap days a year in Texas, for instance, and haven't caught a single snake in three years. When we find better ways to monitor our releases, perhaps we'll find some additional populations."


'/>"/>

Contact: Craig Rudolph
crudolph01@fs.fed.us
936-569-7981 x4012
USDA Forest Service ‑ Southern Research Station
Source:Eurekalert  

Related biology news :

1. Young researcher taking fight against global killer to the next level in Vietnam
2. An invasive Asian fly is taking over European fruit
3. Are nuisance jellyfish really taking over the worlds oceans?
4. Taking the pulse of an iceberg -- scientists simulate laser imaging for NASA missions
5. The breathtaking dance of plants
6. Taking the 3-D measure of macromolecules:
7. Arthritis patients taking newer treatments do not have an overall increased cancer risk
8. Major European project taking steps to protect pollinators
9. Prostate cancer spreads to bones by overtaking the home of blood stem cells
10. Why are vines overtaking the American tropics?
11. Land evapotranspiration taking unexpected turn: huge parts of world are drying up
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Taking America's rarest snake back to the woods
(Date:5/16/2016)... NEW YORK , May 16, 2016   ... authentication solutions, today announced the opening of an IoT ... to strengthen and expand the development of embedded ... provides an unprecedented level of convenience and security with ... to authenticate one,s identity aside from DNA. EyeLock,s platform ...
(Date:4/28/2016)... FRANCISCO and BANGALORE, India , ... of EdgeVerve Systems, a product subsidiary of Infosys (NYSE: ... provider, today announced a global partnership that will ... way to use mobile banking and payment services. ... is a key innovation area for financial services, but it ...
(Date:4/19/2016)... , UAE, April 20, 2016 ... implemented as a compact web-based "all-in-one" system solution for ... biometric fingerprint reader or the door interface with integration ... modern access control systems. The minimal dimensions of the ... readers into the building installations offer considerable freedom of ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... LOUISVILLE, Ky. , June 23, 2016 /PRNewswire/ ... from two Phase 1 clinical trials of its ... double-blind, placebo-controlled, single and multiple ascending dose studies ... and pharmacodynamics (PD) of subcutaneous injection in healthy ... APL-2 subcutaneously (SC) either as a single dose ...
(Date:6/23/2016)... On Wednesday, June 22, 2016, the ... the Dow Jones Industrial Average edged 0.27% lower to finish ... 0.17%. Stock-Callers.com has initiated coverage on the following equities: Infinity ... NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ... ). Learn more about these stocks by accessing their free ...
(Date:6/23/2016)... ... June 23, 2016 , ... Velocity Products, a division ... tuned and optimized exclusively for Okuma CNC machining centers at The International Manufacturing ... collaboration among several companies with expertise in toolholding, cutting tools, machining dynamics and ...
(Date:6/22/2016)... Cell Applications, Inc. and StemoniX announced ... up to one billion human induced pluripotent stem ... These high-quality, consistent stem cells enable researchers to ... more time doing meaningful, relevant research. This achievement ... process that produces affordable, reliable HiPSC for life ...
Breaking Biology Technology: