نتایج جستجو برای: hawksbill

تعداد نتایج: 239  

Journal: :Acta Aquatica 2021

This research was conducted from November 2018 until January 2019 which held at the UPTD Conservation and Supervision of Marine Resources Fisheries in West Sumatera, Pariaman City. The aim is to know hatchling hawksbill sea turtle eggs based on nest depth. method used this study a nonfactorial randomized block design (RBD) consisting 3 treatments replications. were treatment A (with depth 30 cm...

Journal: :international journal of marine science and engineering 2011
p. ghavam mostafavi sh. shahnavaz m. noroozi m. r. fatemi m. h. shahhosseiny

nuclear markers such as microsatellites have allowed the identification of conservation and management populations of the hawksbill turtles. in present study, eight microsatellite loci were studied. 60 samples of hawksbill turtles. flipper from shidvar and hormuz islands have been surgically removed and preserved in 20% dmso buffer. dna was extracted using dnp kit and amplified by pcr methods. ...

2012
Christopher H. R. Goatley Andrew S. Hoey David R. Bellwood

Herbivory is widely accepted as a vital function on coral reefs. To date, the majority of studies examining herbivory in coral reef environments have focused on the roles of fishes and/or urchins, with relatively few studies considering the potential role of macroherbivores in reef processes. Here, we introduce evidence that highlights the potential role of marine turtles as herbivores on coral...

2013
Carlos Carreras Brendan J. Godley Yolanda M. León Lucy A. Hawkes Ohiana Revuelta Juan A. Raga Jesús Tomás

Nesting by three species of marine turtles persists in the Dominican Republic, despite historic threats and long-term population decline. We conducted a genetic survey of marine turtles in the Dominican Republic in order to link them with other rookeries around the Caribbean. We sequenced a 740bp fragment of the control region of the mitochondrial DNA of 92 samples from three marine turtle spec...

2012
Alexander R. Gaos Rebecca L. Lewison Bryan P. Wallace Ingrid L. Yañez Michael J. Liles Wallace J. Nichols Andres Baquero Carlos R. Hasbún Mauricio Vasquez José Urteaga Jeffrey A. Seminoff

Elucidating spatio-temporal movements of animals is an integral component of wildlife conservation and protected species management. Between 2008 and 2010 we satellite tracked 15 adult female hawksbill turtles Eretmochelys imbricata in the eastern Pacific Ocean to evaluate their movement behavior and to guide management and conservation efforts of this highly endangered population. Movements an...

Journal: :The Journal of heredity 2012
Robin A Leroux Peter H Dutton F Alberto Abreu-Grobois Cynthia J Lagueux Cathi L Campbell Eric Delcroix Johan Chevalier Julia A Horrocks Zandy Hillis-Starr Sebastian Troëng Emma Harrison Seth Stapleton

Management of the critically endangered hawksbill turtle in the Wider Caribbean (WC) has been hampered by knowledge gaps regarding stock structure. We carried out a comprehensive stock structure re-assessment of 11 WC hawksbill rookeries using longer mtDNA sequences, larger sample sizes (N = 647), and additional rookeries compared to previous surveys. Additional variation detected by 740 bp seq...

Journal: :Theoretical population biology 1998
R Nielsen

In this paper, a maximum likelihood estimator of population divergence time based on the infinite sites model is developed. It is demonstrated how this estimator may be applied to obtain maximum likelihood estimates of the topology of population phylogenies. This approach addresses several classical problems occurring in the inference of the phylogenetic relationship of populations, most notabl...

Journal: :Aquatic Conservation-marine and Freshwater Ecosystems 2023

Abstract Hawksbill turtles ( n = 56) in a foraging ground around Isla San Jose, Gulf of California, Mexico, were caught, measured, and their skin scutes sampled. Tissue samples from putative prey species collected observed hawksbill feeding areas the ground. Measurements each turtle's straight carapace length used to estimate average life stage population. processed for stable carbon nitrogen i...

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