Anatomy and development of skull–neck boundary structures in the skeleton of the extant crocodylian Alligator mississippiensis

2021 ◽  
Author(s):  
Dana E. Korneisel ◽  
Rebekah Vice ◽  
Hillary C. Maddin
Keyword(s):  
Alligator Mississippiensis

Evidence of determinate growth in an American alligator ( Alligator mississippiensis ) based on long‐term recapture and osteohistological confirmation

2021 ◽  
Author(s):  
Thomas R. Rainwater ◽  
Holly N. Woodward ◽  
Allan R. Woodward ◽  
Philip M. Wilkinson
Keyword(s):  
Alligator Mississippiensis ◽  
American Alligator ◽  
Determinate Growth

scholarly journals Correlations between environmental salinity levels, blood biochemistry parameters, and steroid hormones in wild juvenile American alligators (Alligator mississippiensis)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Patricia C. Faulkner ◽  
Ruth M. Elsey ◽  
David Hala ◽  
Lene H. Petersen
Keyword(s):  
Late Summer ◽  
Storm Surges ◽  
Freshwater Wetlands ◽  
Alligator Mississippiensis ◽  
Environmental Salinity ◽  
Significant Seasonal Variation ◽  
Freshwater Habitats ◽  
Dry Conditions ◽  
American Alligators ◽  
One Year

AbstractAmerican alligators (Alligator mississippiensis) inhabit freshwater wetlands that are vulnerable to salinization caused by anthropogenic alterations to freshwater flow, in addition to storm surges, sea level rise, and droughts. Salinization of coastal freshwater habitats is a growing concern in a changing climate due to increased frequency and intensity of storm surges and drought conditions. This study opportunistically sampled juvenile male and female wild alligators in various salinities each month excluding November, December, and January for one year at Rockefeller Wildlife Refuge in coastal Louisiana. Blood plasma biochemistry parameters including electrolyte levels were subsequently measured. In addition, levels of various renin–angiotensin–aldosterone system hormones, glucocorticoids, androgens, estrogens, and progestogens were analyzed using liquid chromatography and tandem mass spectrometry. Only males were sampled in hyperosmotic environments (> 10‰) during dry conditions in late summer 2018. In juvenile males, plasma Na+, Cl−, and the progestogen 17α,20β-dihydroxypregnenone were significantly and positively correlated with environmental salinity. However, variation in glucocorticoids, androgens, and estrogens were not associated with hypersaline water while sex steroids showed significant seasonal variation. This study demonstrated significant correlation of environmental salinity with electrolyte levels and a sex steroid in wild juvenile alligators, and to our knowledge represents the first measurement of 17α,20β-dihydroxypregnenone in alligators.

scholarly journals The impact of bone and suture material properties on mandibular function in Alligator mississippiensis: testing theoretical phenotypes with finite element analysis

2010 ◽  
Vol 218 (1) ◽  
pp. 59-74 ◽  
Author(s):  
David A. Reed ◽  
Laura B. Porro ◽  
Jose Iriarte-Diaz ◽  
Justin B. Lemberg ◽  
Casey M. Holliday ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Properties ◽  
Suture Material ◽  
Alligator Mississippiensis ◽  
Element Analysis ◽  
The Impact

scholarly journals Rib kinematics during lung ventilation in the American alligator (Alligator mississippiensis): an XROMM analysis

2017 ◽  
Vol 220 (17) ◽  
pp. 3181-3190 ◽  
Author(s):  
Robert J. Brocklehurst ◽  
Sabine Moritz ◽  
Jonathan Codd ◽  
William I. Sellers ◽  
Elizabeth L. Brainerd
Keyword(s):  
Lung Ventilation ◽  
Alligator Mississippiensis ◽  
American Alligator

Responses of American Alligators (Alligator mississippiensis) to Environmental Conditions: Implications for Population and Ecosystem Monitoring

Herpetologica ◽  
2015 ◽  
Vol 71 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Cord B. Eversole ◽  
Scott E. Henke ◽  
David B. Wester ◽  
Bart M. Ballard ◽  
Randy L. Powell
Keyword(s):  
Environmental Conditions ◽  
Alligator Mississippiensis ◽  
Ecosystem Monitoring ◽  
American Alligators

scholarly journals Alterations in steroidogenesis in alligators (Alligator mississippiensis) exposed naturally and experimentally to environmental contaminants.

1997 ◽  
Vol 105 (5) ◽  
pp. 528-533 ◽  
Author(s):  
D A Crain ◽  
L J Guillette ◽  
A A Rooney ◽  
D B Pickford
Keyword(s):  
Environmental Contaminants ◽  
Alligator Mississippiensis

scholarly journals Histological organization and its relationship to function in the femur of Alligator mississippiensis

2004 ◽  
Vol 204 (3) ◽  
pp. 197-207 ◽  
Author(s):  
Andrew H. Lee
Keyword(s):  
Alligator Mississippiensis

Evaluation of four methods for inducing death during slaughter of American alligators (Alligator mississippiensis)

2014 ◽  
Vol 75 (6) ◽  
pp. 536-543 ◽  
Author(s):  
Javier G. Nevarez ◽  
George M. Strain ◽  
Anderson F. da Cunha ◽  
Hugues Beaufrère
Keyword(s):  
Alligator Mississippiensis ◽  
American Alligators
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