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 nests were laid mainly in zone 3.69 %. We encountered 55 nesting females and marked 46 of them. Mean CCL was 64.9 ± 2.4 cm and mean CCW was 68.6 ± 2.6 cm. Females laid on average of 87.3 ± 14.2 eggs per clutch. We recorded two nesting events per female, with a mean inter-nesting period of 18.8 ± 4.2 days. The reproductive output for the season was 181.5 ± 34.8 eggs / female. Mean hatching success was 81.1 ± 12.1 % and mean emergence success was 77.6 ± 12.7 %. The incubation period was 65 ± 4.7 days. Our study is a valuable contribution to knowledge of the reproductive ecology of the olive ridley population regionally and globally.Keywords: conservation, Eastern Pacific Ocean, emergence success, hatching success, turtle rookery.
RESUMENEn Colombia, la tortuga golfina (Lepidochelys olivacea) es la más común de las tortugas anidantes. La playa El Valle es considerada la más importante para anidación en Suramérica. La intensa captura de hembras y saqueo de huevos para consumo y comercio local ha sido una práctica común por años. Realizamos un análisis de la ecología de anidación de la tortuga golfina en la Playa El Valle, Pacifico Norte, durante la temporada de 2008. Un total de 164 nidadas fueron transferidas a viveros de protección. El pico de anidación ocurrió durante la segunda quincena de agosto y septiembre con un 64,63 % de las posturas. A lo largo de la playa, el sector 3 presento la mayor frecuencia de anidación con 26 %. Los nidos fueron desovados principalmente en la zona 3, con 69 %. Encontramos 55 hembras y 46 fueron marcadas. El LCC fue (promedio± DE: 64,9 ± 2,4 cm) y ACC fue
La tortuga carey del Pacífico oriental es una de las unidades regionales de manejo más amenazadas del mundo. En el Pacífico colombiano ha sido avistada en áreas de alimentación y en estadios juveniles y/o subadultos. Sus zonas y temporada de anidación son desconocidas para el país. El 24 de febrero de 2020, se registra la primera hembra de tortuga carey para el Pacífico colombiano, en el Mosaico de Conservación Bahía Málaga. El largo curvo mínimo del caparazón fue de 90 cm, el largo curvo del caparazón nucalsupracuadal fue de 90,5 cm, el ancho curvo del caparazón fue de 73,6 cm y su peso fue de 69 kg. La presencia de una hembra y ser la principal zona de alimentación y residencia de juveniles y subadultos de la especie en el Pacífico de Colombia hace indispensable continuar con el monitoreo sistemático en agua e identificar y monitorear potenciales sitios de anidación para aportar a la conservación de la tortuga carey del Pacífico oriental.
The species and sizes of sea turtles present in the Bahía Málaga Conservation Mosaic, Valle del Cauca, were characterized between 2016-2020 through aquatic monitoring and voluntary delivery by native fishermen. The registry of individuals was determined by aquatic monitoring, which was divided into three phases: exploratory sampling, continuous sampling, standardized sampling, plus voluntary deliveries by fishermen in their fishing tasks. A total of 107 hours of effort were used to detect 51 individuals of hawksbill (Eretmochelys imbricata) and black (Chelonia mydas) turtles. These results contribute as a baseline for the knowledge of sea turtles as an effective strategy for research and conservation in Bahía Málaga.
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