Results 201 to 210 of about 53,264 (236)

Lunar phases and hawksbill sea turtle nesting

Journal of Ethology, 2019
The behavior of sea turtle species can be influenced by the lunar cycle, possibly due to moonlight variability. We analyzed the relationship between nesting behavior and moon phase using nesting hawksbill turtle records for beaches in Northeast Brazil for the 2006–2007 to 2015–2016 seasons.
Milena Felix Nakamura, Armando José Barsante Santos, Bruno Lobão-Soares, Gilberto Corso   +3 more
openaire   +1 more source

Hawksbill Sea Turtles in the Northwestern Hawaiian Islands

Chelonian Conservation and Biology, 2012
Abstract This study reports observations of Hawksbill sea turtles (Eretmochelys imbricata) in the Northwestern Hawaiian Islands, a remote and protected expanse of coral atolls considered outside the species range. Since no direct monitoring efforts exist, we synthesized records from historical accounts, opportunistic sightings, and internet ...
Kyle S. Van Houtan, John N. Kittinger, Amanda L. Lawrence, Chad Yoshinaga, V. Ray Born, Adam Fox   +5 more
openaire   +1 more source

Observations on the ecology and survival outlook of the hawksbill turtle

Biological Conservation, 1975
Abstract The hawksbill turtle ( Eretmochelys imbricata ) has declined to endangered status before its ecology has been adequately investigated. A limited amount of data on the species has accumulated at the Green Turtle Station at Tortuguero, on the Caribbean coast of Costa Rica.
Archie Carr, Stephen Stancyk
openaire   +1 more source

In-nest mortality and pathology of hawksbill sea turtle (Eretmochelys imbricata) embryos and hatchlings in St. Kitts and Nevis.

Journal of Comparative Pathology
Strategies to improve the hatch success and survival of critically endangered hawksbill turtles (Eretmochelys imbricata) require knowledge of threats to them including pathological conditions. The objective of this study was to describe the mortality and
Alex Mau, Paula Sotomayor Rodríguez, Angela Picknell, Alissa Tepedino, Dominique Capaldo, Heather Fenton, Lemuel Pemberton, Kimberly M. Stewart, Michelle M. Dennis   +8 more
semanticscholar   +1 more source

Deforestation: Risk Of Sex Ratio Distortion In Hawksbill Sea Turtles

Ecological Applications, 2006
Phenotypic sex in sea turtles is determined by nest incubation temperatures, with warmer temperatures producing females and cooler temperatures producing males. The common finding of highly skewed female-biased hatchling sex ratios in sea turtle populations could have serious repercussions for the long-term survival of these species and prompted us to ...
Stephanie Jill, Kamel, N, Mrosovsky
openaire   +2 more sources

Dispersal, recruitment and migratory behaviour in a hawksbill sea turtle aggregation

Molecular Ecology, 2008
AbstractWe investigated the dispersal, recruitment and migratory behaviour of the hawksbill sea turtle (Eretmochelys imbricata), among different life‐history stages and demographic segments of the large hawksbill turtle aggregation at Mona Island, Puerto Rico.
Ximena, Velez-Zuazo, Willy D, Ramos, Robert P, van Dam, Carlos E, Diez, Alberto, Abreu-Grobois, W Owen, McMillan   +5 more
openaire   +2 more sources

Pivotal and beach temperatures for hawksbill turtles nesting in Antigua

Canadian Journal of Zoology, 1992
Eggs of hawksbill turtles, Eretmochelys imbricata, from Antigua were incubated at constant tempe ratures. The pivotal temperature (the temperature at which 50% of each sex is produced) for the sample was estimated to be 29.2 °C. Sand temperatures at the depth of turtle nests were recorded over two nesting seasons at Pasture Bay, Antigua. Although sand
N. Mrosovsky, Anna Bass, Lynn A. Corliss, James I. Richardson, Thelma H. Richardson   +4 more
openaire   +1 more source

Hawksbill turtle Eretmochelys imbricata in the sultanate of Oman

Biological Conservation, 1981
Abstract The preence of a population of hawksbill turtle Eretmochelys imbricata nesting on Masirah island, lat. 21°N, long. 59°E, is reported. A maximum of 124 adult females nested in 1978 and 109 in 1979. Details of adult size and clutch sizes are given.
openaire   +1 more source

The Carapacial Scutes of hawksbill turtles (Eretmochelys imbricata)

2007
The primary objective of the research reported here was to decipher information on the relationship between size and age from the keratin plates of the carapace of hawksbill turtles, Eretmochelys imbricata. This required a detailed description of the development and differentiation of the keratin plates, and the formulation of a morphological model ...
openaire   +1 more source

Exploiting Green and Hawksbill Turtles in Western Australia: The Commercial Marine Turtle Fishery

2014
Many attempts were made to exploit both the green and hawksbill turtle commercially from the mid-1800s. The first commercial export of hawksbill tortoiseshell appeared in the Western Australian trade tables in 1869 and the green turtle fishing industry operated intermittently between 1870 and 1961 prior to the industry becoming successfully established
openaire   +1 more source