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Conservation of the hawksbill turtle (Eretmochelys imbricata) in Rincón del Mar, Colombia Boletín de Investigaciones
Restrepo-Garzón,Nicolás; Álvarez-Rodríguez,Rafael Andrés; Ramírez-Gallego,Cristian; Ruíz-Álvarez,Tulio; Barrientos-Muñoz,Karla G..
ABSTRACT The conservation and nesting ecology of the hawksbill turtle (Eretmochelys imbricata) are described, as a result of a systematic monitoring between 2018 and 2019 in the municipality of Rincón del Mar, San Onofre, Sucre. Six hawksbill turtle nests were recorded in situ, one nest was poached by humans. The nesting female spawned a total of 761 eggs in five clutches (mean 152.2 ± 15.5 eggs per clutch). Mean hatching success was 78.2 ± 12.4 % and the mean emergence success was 74.7 ± 14.1 % (n = 5). The mean incubation period was 54 ± 7.8 days (n = 4). 591 hatchlings were released into the sea, of which 22 (3.72 %) were rescued and released with the community. In addition, physical measurements of the nests (width, depth, distance to the beach) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hawksbill turtle; Conservation; Nesting ecology; Hatching success; Colombian Caribbean..
Ano: 2021 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000200053
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NESTING ECOLOGY OF THE OLIVE RIDLEY SEA TURTLE (Lepidochelys olivacea) (CHELONIIDAE) AT EL VALLE BEACH, NORTHERN PACIFIC, COLOMBIA Acta biol.Colomb.
BARRIENTOS-MUÑOZ,KARLA G.; RAMÍREZ-GALLEGO,CRISTIAN; PÁEZ,VIVIAN.
The olive ridley (Lepidochelys olivacea) is the most common sea turtle to nest in Colombia. El Valle beach is considered the most important nesting beach for this species in South America. Intensive direct capture of nesting females and egg poaching for consumption and local commercial purposes has been a common practice for years. We conducted an analysis of the nesting ecology of the olive ridley on El Valle beach in the northern Pacific of Colombia in 2008. A total of 164 clutches were transferred to an artificial hatchery for protection. The peak of nesting occurred from the second half of August until the end of September, accounting for 64.6 % of all nests. Along the beach, the section most frequently used was Section 3, with 26 % of the nests. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation; Eastern Pacific Ocean; Emergence success; Hatching success; Turtle rookery.
Ano: 2014 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2014000300010
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Nesting of Phrynops geoffroanus (Testudines: Chelidae) on sandy beaches along the Upper Xingu River, Brazil Rev. Bras. Zool.
Ferreira Júnior,Paulo D.; Balestra,Rafael A. M.; Moreira,José R.; Freitas,Fábio de O.; Lustosa,Ana P. G.; Jorge,Rafael F.; Rosa,Artur J. de M.; Sampaio,Antônio A.; Gomes,Aline S..
This work presents the first data on incubation temperature of Phrynops geoffroanus (Schweigger, 1812) in a natural environment, and provides information on nest predation, hatching success and size of offspring born in the nests on sandy beaches along the Upper Xingu River. Thirty-one P. geoffroanus nests were found, of which eleven were completely predated, mainly by Cerdocyon thous (Linnaeus, 1766). Incubation was completed in nine out of the 17 nests protected by netting. The nests presented an average of 13.1 eggs and were distributed over the various geomorphological sectors of the nine sampled beaches. The size and weight of the hatchlings varied significantly between nests, and the incubation period in protected nests lasted for 76.5 days, less...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Geoffroy's side-necked turtle; Hatching success; Incubation; Nest predation; Xingu Indigenous Park.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000500004
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On clutch size and hatching success of the South American turtles Podocnemis expansa (Schweigger, 1812) and P. unifilis Troschel, 1848 (Testudines, Podocnemididae) Anais da ABC (AABC)
Vanzolini,Paulo Emilio.
Data on clutch size and hatching success of P. expansa were gathered for seven beaches traditionally used by the species and re-analyzed statistically by means of regression analysis, of the number of eggs on the number of females (or nests) and of the number of young on the number of eggs. All regressions were linear, passed through the origin and had excellent fits. Average clutch size varied from 75 to 123, and presented geographic differentiation: (i) Rio Orinoco, (ii) Rio Trombetas + Rio Branco and (iii) Rio Juruá + Rio Purus. Average hatching success was ca. 83%. In P. unifilis there was also geographic variation in clutch size, the Iquitos area showing the highest values. Hatching success of P. unifilis was uniformly high: only one sample, from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Turtle reproduction; Hatching success; Clutch size; Optimal egg-size theory; Podocnemis expansa; Podocnemis unifilis.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652003000400002
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Relocations of sea turtle nests of Lepidochelys olivacea, Dermochelys coriacea and Chelonia mydas in the Galibi Nature Reserve, Suriname Naturalis
Schouten, A.D.; Weijerman, M.; Tienen, L.H.G. van; Hoekert, W.E.J..
SCHOUTEN, A.D., WEIJERMAN, M., VAN TIENEN, L.H.G. & W.E.J. HOEKERT, 1997. Relocations of Sea Turtle nests of Lepidochelys olivacea, Dermochelys coriace and Chelonia mydas in the Galibi Nature Reserve, Suriname. Studies Nat. Hist. Caribbean Region 73, Amsterdam, 1997: 63-69. Relocation of nests of the marine turtles Lepidochelys olivacea (ESCHSCHOLTZ 1829), Dermochelys coriace (LINNAEUS 1758) and CHELONIA MYDAS (LINNAEUS 1758) in the Galibi Nature Reserve is performed to protect them from a number of hazards. The hatching percentage per nest is not significantly decreased by relocation, but the number of nests from which hatchlings emerge is greatly enhanced. In this situation relocation can be an effective conservation measure.
Tipo: Article / Letter to the editor Palavras-chave: Dermochelys coriace; Marine turtles; Lepidochelys olivacea; Chelonia mydas; Emerging success; Hatching success; Suriname.; Nest relocations.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/503186
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Солёностная и температурная толерантность морских копепод Acarita clausi и Acarita tonsa в эмбриональный период IBSS Repository
Губарева, Е. С.; Светличный, Л. С..
Speed of sinking to salinity and temperature gradients of the Marmara and Black Seas was calculated for eggs of Acartia clausi and A. tonsa laid in the upper layers basing on egg mass densities. The effect of gradual changing of temperature and salinity on egg hatching success of these species was studied.
Tipo: Book Section Palavras-chave: Acartia clausi; Acartia tonsa; Eggs; Density; Hatching success; Marmara Sea; Black Sea.
Ano: 2010 URL: http://repository.ibss.org.ua/dspace/handle/99011/1848
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