Rice, Amanda Nicole and Ross, J. Perran and Woodward, Allan R. and Carbonneau, Dwayne A. and Percival, H. Franklin (2007) Alligator Diet in Relation to Alligator Mortality on Lake Griffin, FL. Southeastern Naturalist, 6(1), pp. 97-110.
(The document's language is
- Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat
Download (194Kb) | Preview
Alligator mississippiensis (American Alligators) demonstrated low hatchrate success and increased adult mortality on Lake Griffin, FL, between 1998 and 2003. Dying Lake Griffin alligators with symptoms of poor motor coordination were reported to show specific neurological impairment and brain lesions. Similar lesions were documented in salmonines that consumed clupeids with high thiaminase levels. Therefore, we investigated the diet of Lake Griffin alligators and compared it with alligator diets from two lakes that exhibited relatively low levels of unexplained alligator mortality to see if consumption of Dorosoma cepedianum (gizzard shad) could be correlated with patterns of mortality. Shad in both lakes Griffin and Apopka had high levels of thiaminase and Lake Apopka alligators were consuming greater amounts of shad relative to Lake Griffin without showing mortality rates similar to Lake Griffin alligators. Therefore, a relationship between shad consumption alone and alligator mortality is not supported.
|Title:||Alligator Diet in Relation to Alligator Mortality on Lake Griffin, FL|
|Journal or Publication Title:||Southeastern Naturalist|
|Page Range:||pp. 97-110|
|Issuing Agency:||Florida Cooperative Fish and Wildlife Research Unit|
|Uncontrolled Keywords:||Alligator mississippiensis; American alligators; Lake Griffin, Florida; nutrition; Dorosoma cepedianum; Gizzard shad; mortality|
|Depositing User:||Stephanie Haas|
|Date Deposited:||17 Apr 2011 14:48|
|Last Modified:||29 Sep 2011 15:29|
Actions (login required)