scholarly journals Influence of fats, carotenoids and POPs on the reproduction of the leatherback turtle

2019 ◽  
Author(s):  
E. De Andrés ◽  
Juan José Negro Balmaseda ◽  
Juan Carlos Navarro ◽  
Adolfo Marco
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Unsaturated Fatty Acids ◽  
Egg Yolk ◽  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Reproductive Parameters ◽  
Leatherback Turtles ◽  
Leatherback Turtle ◽  
Leatherback Sea Turtle

ABSTRACTThis study provides baseline data on fatty acid profiles and carotenoids in eggs of the leatherback sea turtle, Dermochelys coriacea. Correlations among such compounds, persistent organic pollutants, and reproductive parameters are also investigated. A number of 18 clutches were evaluated during June and August of 2008 at Reserva Pacuare Beach, in the Caribbean side of Costa Rica. Viability and fertility were calculated for each nest. Concentration levels of saturated and unsaturated fatty acids (SFAs and PUFAs), carotenoids and different congeners of persistent organic pollutants (POPs) were determined from egg-yolk samples. Mean ± SD values were calculated for each compound and for each clutch. Correlations were performed searching for interactions among different compounds and for potential effects on reproductive parameters, thus all the studied compounds were related to each other and to any of the reproductive parameters. Low carotenoid levels characterized all eggs of this species, and a positive relationship between carotenoid concentrations and the viability rate was found. POPs and PUFA were positive and strongly correlated, suggesting molecular interactions. PUFAs appeared to increase fertility rate and hatchling length. This study provides potential evidences of PUFA enhancing fertility and hatchling size, and of carotenoids limiting vitellogenesis. The positive correlation found between POPs and PUFAs may indicate that harmful effects of these contaminants on the reproduction of leatherback turtles could be masked.

Monitoring persistent organic pollutants in leatherback turtles (Dermochelys coriacea) confirms maternal transfer

2011 ◽  
Vol 62 (7) ◽  
pp. 1396-1409 ◽  
Author(s):  
Kelly R. Stewart ◽  
Jennifer M. Keller ◽  
Ryan Templeton ◽  
John R. Kucklick ◽  
Chris Johnson
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Dermochelys Coriacea ◽  
Maternal Transfer ◽  
Leatherback Turtles

Body temperatures of leatherback turtles (Dermochelys coriacea) in temperate waters off Nova Scotia, Canada

2004 ◽  
Vol 82 (8) ◽  
pp. 1302-1306 ◽  
Author(s):  
Michael C James ◽  
N Mrosovsky
Keyword(s):  
Nova Scotia ◽  
Cold Water ◽  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Body Temperatures ◽  
Leatherback Turtles ◽  
Extensive Range ◽  
Leatherback Sea Turtle ◽  
Time Of Year ◽  
Large Animals

The leatherback sea turtle, Dermochelys coriacea (Vandelli, 1761), has the most extensive range of any reptile, migrating from tropical and subtropical nesting areas to distant foraging habitats, including those in temperate and even boreal waters. This implies flexible thermal functioning. It has been inferred that leatherbacks support active foraging by keeping warm in cold water, rather than becoming lethargic as other marine turtles do. However, data consistent with this view have come from captive turtles in unnatural and stressful conditions. In the present case, foraging leatherbacks were captured at sea off Nova Scotia and their body temperature recorded within 10 min, before such large animals could change their body temperatures appreciably. Mean excess temperature over that of the sea surface (15.0–16.7 °C) averaged 8.2 °C. These results attest to, but underestimate, the capacity of free-swimming leatherbacks to keep warm in northern waters, as data from another turtle that was instrumented to record ocean temperature while diving revealed that leatherbacks foraging in this area at the same time of year may spend 40% of their time diving to waters cooler than the surface.

scholarly journals Mycobacterium haemophilum infection in a juvenile leatherback sea turtle (Dermochelys coriacea)

2016 ◽  
Vol 28 (6) ◽  
pp. 718-721 ◽  
Author(s):  
Kyle Donnelly ◽  
Thomas B. Waltzek ◽  
James F. X. Wellehan ◽  
Nicole I. Stacy ◽  
Maria Chadam ◽  
...  
Keyword(s):  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Leatherback Sea Turtle ◽  
Mycobacterium Haemophilum

Primary Multicentric Pulmonary Low-grade Fibromyxoid Sarcoma and Chelonid Alphaherpesvirus 5 Detection in a Leatherback Sea Turtle (Dermochelys coriacea)

2019 ◽  
Vol 168 ◽  
pp. 1-7 ◽  
Author(s):  
J. Díaz-Delgado ◽  
J.C. Gomes-Borges ◽  
A. Monteiro Silveira ◽  
J. Einhardt-Vergara ◽  
K.R. Groch ◽  
...  
Keyword(s):  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Low Grade ◽  
Fibromyxoid Sarcoma ◽  
Leatherback Sea Turtle

Investigating the Potential Role of Persistent Organic Pollutants in Hawaiian Green Sea Turtle Fibropapillomatosis

2014 ◽  
Vol 48 (14) ◽  
pp. 7807-7816 ◽  
Author(s):  
Jennifer M. Keller ◽  
George H. Balazs ◽  
Frances Nilsen ◽  
Marc Rice ◽  
Thierry M. Work ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Potential Role ◽  
Sea Turtle ◽  
Green Sea Turtle

Oxygen Transport in the Leatherback Sea Turtle Dermochelys coriacea

1990 ◽  
Vol 63 (5) ◽  
pp. 1012-1024 ◽  
Author(s):  
Molly E. Lutcavage ◽  
Peter G. Bushnell ◽  
David R. Jones
Keyword(s):  
Oxygen Transport ◽  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Leatherback Sea Turtle
Sign in / Sign up

Export Citation Format

Share Document