Preliminary approach to the hatchlings sex-ratio of a population of Caretta caretta of Boavista island, Cape Verde Archipielago (Western Africa).Report as inadecuate




Preliminary approach to the hatchlings sex-ratio of a population of Caretta caretta of Boavista island, Cape Verde Archipielago (Western Africa). - Download this document for free, or read online. Document in PDF available to download.

Materias : 24 Ciencias de la vida2401 Biología animal (zoología)240116 Herpetología

Fecha de publicación : 2004

Fecha de depósito: 21-jun-2016

Tipo de documento: Resumen

Resumen : EN A nesting population of loggerhead sea turtles Caretta caretta has recently been described for Boa Vista Island, Cape Verde Archipelago (Western Africa). Since 1998 -Projecto Cabo Verde Natura 2000- has monitored three beaches during the turtle breeding season. The beaches being monitored - Calheta, Errata and Ponta Cosme - are located in the southeast part of Boa Vista Island. This work intends to give a first insight into the Boa Vista Island sea turtle population’s sex ratio using a histological approach, as sexual determination in sea turtles is known to be temperature-dependent (TSD or temperature-dependent sex determination).

En : 24th Annual Symposium on Sea Turtle Conservation and Biology, San Jose, Costa Rica, 2004. Pag 121





Author: Delgado, CláudiaDellinger, ThomasVaro Cruz, NuriaCejudo, DanielLópez-Jurado, Luis Felipe

Source: https://acceda.ulpgc.es


Teaser



24th Annual Symposium on Sea Turtle Conservation and Biology, San Jose, Costa Rica.
2004.
Pag 121 PRELIMINARY APPROACH TO THE HATCHLING SEX RATIO OF A POPULATION OF CARETTA CARETTA OF BOA VISTA ISLAND, CAPE VERDE ARCHIPELAGO (WESTERN AFRICA) Cláudia Delgado1, Thomas Dellinger1, Nuria Varo2, Daniel Cejudo2, and Luis F.
Lopez-Jurado2 1 Laboratório de Biologia Marinha e Oceanografia, Universidade da Madeira, Portugal and Centro de Estudos da Macaronésia 2 Departamento de Biología, Facultad de Ciencias del Mar, Universidad de Las Palmas de Gran Canaria, Spain Abstract A nesting population of loggerhead sea turtles Caretta caretta has recently been described for Boa Vista Island, Cape Verde Archipelago (Western Africa).
Since 1998, “Projecto Cabo Verde Natura 2000” has monitored three beaches during the turtle breeding season.
The beaches being monitored - Calheta, Errata and Ponta Cosme - are located in the southeast part of Boa Vista Island.
This work intends to give a first insight into the Boa Vista Island sea turtle population’s sex ratio using a histological approach, as sexual determination in sea turtles is known to be temperature-dependent (TSD or temperature-dependent sex determination). Between 16th August and 29th September 2003, recently dead hatchlings from the beaches mentioned above were collected and necropsied for gonad withdrawal.
Only hatchlings found dead due to natural death or predation were collected.
49 hatchlings were necropsied and duplicate gonads were preserved in Bouin’s preservative and 10% formaline for histological sex assignment.
This is the first preliminary assessment of this population’s sex ratio.
In 2004, field-season data on this subject will need to be further improved and eventually compared with incubation temperature data. ...






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