scholarly journals Predation of satellite-tagged juvenile loggerhead turtles Caretta caretta in the Northwest Atlantic Ocean

2021 ◽  
Author(s):  
KE Hall ◽  
MC James
Keyword(s):  
Atlantic Ocean ◽  
Caretta Caretta ◽  
Northwest Atlantic ◽  
Loggerhead Turtles

scholarly journals Plasma Vitellogenin in Free-Ranging Loggerhead Sea Turtles (Caretta caretta) of the Northwest Atlantic Ocean

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Kimberly Smelker ◽  
Lauren Smith ◽  
Michael Arendt ◽  
Jeffrey Schwenter ◽  
David Rostal ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Sea Turtles ◽  
Endocrine Disrupting Chemicals ◽  
Caretta Caretta ◽  
Reproductive Activity ◽  
Loggerhead Sea Turtles ◽  
Northwest Atlantic ◽  
Free Ranging ◽  
Vitellogenin Concentration ◽  
Nesting Season

Vitellogenin is the egg yolk precursor protein produced by oviparous vertebrates. As endogenous estrogen increases during early reproductive activity, hepatic production of vitellogenin is induced and is assumed to be complete in female sea turtles before the first nesting event. Until the present study, innate production of vitellogenin has not been described in free-ranging sea turtles. Our study describes circulating concentrations of vitellogenin in loggerhead sea turtles (Caretta caretta) from the Northwest Atlantic Ocean. We collected blood samples from juveniles and adults via in-water captures off the coast of the Southeast USA from May to August, and from nesting females in June and July at Hutchinson Island, Florida. All samples were analyzed using an in-house ELISA developed specifically to measureCaretta carettavitellogenin concentration. As expected, plasma vitellogenin declined in nesting turtles as the nesting season progressed, although it still remained relatively elevated at the end of the season. In addition, mean vitellogenin concentration in nesting turtles was 1,000 times greater than that measured in samples from in-water captures. Our results suggest that vitellogenesis may continue throughout the nesting season, albeit at a decreasing rate. Further, vitellogenin detected in turtles captured in-water may have resulted from exposure to endocrine disrupting chemicals.

Seasonal distribution patterns of juvenile loggerhead sea turtles (Caretta caretta) following capture from a shipping channel in the Northwest Atlantic Ocean

2011 ◽  
Vol 159 (1) ◽  
pp. 127-139 ◽  
Author(s):  
Michael D. Arendt ◽  
Albert L. Segars ◽  
Julia I. Byrd ◽  
Jessica Boynton ◽  
J. David Whitaker ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Sea Turtles ◽  
Distribution Patterns ◽  
Caretta Caretta ◽  
Seasonal Distribution ◽  
Loggerhead Sea Turtles ◽  
Northwest Atlantic ◽  
Shipping Channel

Population Structure of Loggerhead Turtles (Caretta caretta) in the Northwestern Atlantic Ocean and Mediterranean Sea

1993 ◽  
Vol 7 (4) ◽  
pp. 834-844 ◽  
Author(s):  
BRIAN BOWEN ◽  
JOHN C. AVISE ◽  
JAMES I. RICHARDSON ◽  
ANNE B. MEYLAN ◽  
DIMITRIS MARGARITOULIS ◽  
...  
Keyword(s):  
Population Structure ◽  
Atlantic Ocean ◽  
Mediterranean Sea ◽  
Caretta Caretta ◽  
Loggerhead Turtles

DETAILED RECORDS OF THE ICE-RAFTED DETRITUS IN SEDIMENTS FROM THE ORPHAN KNOLL, NORTHWEST ATLANTIC OCEAN

2020 ◽  
Author(s):  
Alisha L. Guglielmi ◽  
◽  
James L. Cullen ◽  
Annette Lott ◽  
Jerry F. McManus
Keyword(s):  
Atlantic Ocean ◽  
Northwest Atlantic
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