Nesting of the leatherback turtle (Dermochelys coriacea) from 1999-2000 through 2003-2004 at Playa Langosta, Parque Nacional Marino Las Baulas de Guanacaste, Costa Rica
-
Published source details
Piedra R., Vélez E., Dutton P., Possardt E. & Padillas C. (2007) Nesting of the leatherback turtle (Dermochelys coriacea) from 1999-2000 through 2003-2004 at Playa Langosta, Parque Nacional Marino Las Baulas de Guanacaste, Costa Rica. Chelonian Conservation and Biology, 6, 111-116.
Published source details Piedra R., Vélez E., Dutton P., Possardt E. & Padillas C. (2007) Nesting of the leatherback turtle (Dermochelys coriacea) from 1999-2000 through 2003-2004 at Playa Langosta, Parque Nacional Marino Las Baulas de Guanacaste, Costa Rica. Chelonian Conservation and Biology, 6, 111-116.
Actions
This study is summarised as evidence for the following.
| Action | Category | |
|---|---|---|
|
Relocate nests/eggs to a nearby natural setting (not including hatcheries): Sea turtles Action Link |
 |
|
|
Relocate nests/eggs to a hatchery: Sea turtles Action Link |
|
-
Relocate nests/eggs to a nearby natural setting (not including hatcheries): Sea turtles
A replicated, controlled, before-and-after study in 1999–2004 on a sandy beach in Guanacaste Province, Costa Rica (Piedra et al. 2007) found that relocating leatherback turtle Dermochelys coriacea nests to safe locations on the beach or a hatchery resulted in similar hatching and emergence success compared to nests left in situ. Results were not statistically tested, and no distinction was made between nests relocated to the beach or hatchery. Hatching and emergence success were similar for relocated nests (hatching: 19–52%; emergence: 14–32%) and nests left in situ (hatching: 30–69%; emergence: 9–57%). In October–March 1999–2004, beaches were searched nightly for nesting females. In 2001–2004, nests considered to be at high risk (such as being within tidal zone, in areas of high pedestrian traffic, in vegetation or close to estuary) were relocated to safe places on the beach or a hatchery (86 nests), and others were left in situ (220 nests). Two days after emergence of the first hatchling, or 60 days after laying, nests were excavated to determine hatching and emergence success.
(Summarised by: William Morgan)
-
Relocate nests/eggs to a hatchery: Sea turtles
A replicated, controlled, before-and-after study in 1999–2004 on a sandy beach in Guanacaste Province, Costa Rica (Piedra et al. 2007) found that relocating leatherback turtle Dermochelys coriacea nests to a hatchery or to other safe locations on the beach resulted in similar hatching and emergence success compared to nests left in situ. Results were not statistically tested, and no distinction made between nests relocated to the hatchery or to other locations on the beach. Hatching and emergence success were similar for relocated nests (hatching: 19–52%; emergence: 14–32%) and nests left in situ (hatching: 30–69%; emergence: 9–57%). In October–March 1999–2004, beaches were searched every night for nesting females. In 2001–2004, nests considered to be at high risk (within tidal zone, in areas of high pedestrian traffic, in vegetation, close to estuary) were relocated to a hatchery or to other safe places on the beach (86 nests), and other nests were left in situ (220 nests). Two days after emergence of the first hatchling, or 60 days after laying, nests were excavated to determine hatching and emergence success.
(Summarised by: William Morgan)
)_2023.JPG)
