Hellbender

1803

Fish & Wildlife Service. Cryptobranchus at CalPhotos. Amphibians of the United States Endemic fauna of the United States Amphibians described in 1803 Cryptobranchidae Extant Gelasian first appearances Natural history of the Great Smoky Mountains Taxa named by Fran├žois Marie Daudin Symbols of Pennsylvania

1940

One report, written by a commercial collector in the 1940s, noted a trend of more crayfish predation in the summer during times of higher prey activity, whereas fish made up a larger part of the winter diet, when crayfish are less active.

1980

This hellbender subspecies inhabits the White River and Spring River systems in southern Missouri and northern Arkansas, and its population has declined an estimated 75% since the 1980s, with only about 590 individuals remaining in the wild.

2006

Louis Zoo's captive hellbender population between March 2006 and April 2007, tests began to be conducted on wild populations.

2007

Louis Zoo's captive hellbender population between March 2006 and April 2007, tests began to be conducted on wild populations.

2011

This could be reason enough to ensure work is done on both subspecies, as preserving extant genetic diversity is of crucial ecological importance. The Ozark hellbender has been listed as an endangered species under the Endangered Species Act by the US Fish and Wildlife Service since October 5, 2011.

Louis Zoo, in a joint project with the Missouri Department of Conservation, hatching on November 15, 2011. Apart from the Ozark efforts, head-starting programs, in which eggs are collected from the wild and raised in captivity for re-release at a less vulnerable stage, have been initiated in New York and Ohio. Members of the Pennsylvania State Senate have voted to approve the eastern hellbender as the official state amphibian in an effort to raise awareness about its endangered status.

2018

The legislation did not pass in 2018, but was reintroduced in 2019.

2019

The legislation did not pass in 2018, but was reintroduced in 2019.

On April 23, 2019, Pennsylvania Governor Tom Wolf signed legislation making the eastern hellbender Pennsylvania's official state amphibian.




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Page generated on 2021-08-05