Results 131 to 140 of about 737 (170)
Some of the next articles are maybe not open access.
Science, 1997
In his article “Turtle project can't outrun bureaucracy” (News & Comment, [20 June, p. 1785][1]) Jeffrey Mervis states that Cuba is seeking limited trade of hawksbill sea turtles on the grounds that its population is self-contained. The Cuban proposal at the 10th meeting of CITES (Convention on International Trade in Endangered Species of Flora and ...
N. Mrosovsky, Grahame Webb
openaire +1 more source
In his article “Turtle project can't outrun bureaucracy” (News & Comment, [20 June, p. 1785][1]) Jeffrey Mervis states that Cuba is seeking limited trade of hawksbill sea turtles on the grounds that its population is self-contained. The Cuban proposal at the 10th meeting of CITES (Convention on International Trade in Endangered Species of Flora and ...
N. Mrosovsky, Grahame Webb
openaire +1 more source
Signals of Vitellogenesis and Estrus in Female Hawksbill Turtles
Zoological Science, 2015This study reports a viable means of identifying the vitellogenic cycle and limited estrus period in hawksbill turtles for the purposes of developing captive breeding program, based on the combination of blood metabolite parameters (triglyceride, total protein, and calcium levels), feeding status, and ovary condition. Follicle size of two focal captive
Isao, Kawazu +6 more
openaire +2 more sources
Induction of Oviposition by the Administration of Oxytocin in Hawksbill Turtles
Zoological Science, 2014We set out to develop an oviposition induction technique for captive female hawksbill turtles Eretmochelys imbricata. The infertile eggs of nine females were induced to develop by the administration of follicle-stimulating hormone, after which we investigated the effects of administering oxytocin on oviposition.
Isao, Kawazu +4 more
openaire +2 more sources
Semen Evaluation of Captive Hawksbill Turtles
Chelonian Conservation and Biology, 2014Abstract This study presented information about the semen evaluation of captive male hawksbill sea turtles, Eretmochelys imbricata, based on an extended 15-mo study using the electro-ejaculation technique. In particular, we demonstrated that hawksbill sperm, which is underactive just after ejaculation, was activated by the presence of urine.
Isao Kawazu +4 more
openaire +1 more source
Spongivory in Hawksbill Turtles: A Diet of Glass
Science, 1988The hawksbill ( Eretmochelys imbricata ), an endangered marine turtle associated with coral reefs throughout the tropics, feeds almost exclusively on sponges in the Caribbean, and possibly throughout its range. It is one of fewer than a dozen vertebrates that are known to specialize on this widely distributed but ...
openaire +2 more sources
Lunar phases and hawksbill sea turtle nesting
Journal of Ethology, 2019The 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 +3 more
openaire +1 more source
Hawksbill Sea Turtles in the Northwestern Hawaiian Islands
Chelonian Conservation and Biology, 2012Abstract 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 +5 more
openaire +1 more source
Observations on the ecology and survival outlook of the hawksbill turtle
Biological Conservation, 1975Abstract 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
Deforestation: Risk Of Sex Ratio Distortion In Hawksbill Sea Turtles
Ecological Applications, 2006Phenotypic 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, 2008AbstractWe 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 +5 more
openaire +2 more sources