Relationship between sea surface temperature and the nesting of the Olive Ridley sea turtle Lepidochelys olivacea (Testudines: Cheloniidae) in Gorgona Island, Colombian Pacific
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| Format: | Artículo científico |
| Langue: | en |
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Universidad de Costa Rica
2020
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| author | María-Alejandra Ariza-Gallego |
| author_facet | María-Alejandra Ariza-Gallego |
| contents | Relationship between sea surface temperature and the nesting of the Olive Ridley sea turtle Lepidochelys olivacea (Testudines: Cheloniidae) in Gorgona Island, Colombian Pacific María-Alejandra Ariza-Gallego Julio-César Herrera-Carmona Luis Fernando Payán Alan Giraldo Biología Colombia ENSO indexes conservation thermal anomaly Eastern Tropical Pacific Introduction: Lepidochelys olivacea is the most abundant sea turtle in the Colombian Pacific and oceanographic conditions at the Eastern Tropical Pacific may have an effect on its reproductive behavior Objective: To assess the relationship between reproductive aspects of L. olivacea nesting at Gorgona island and sea surface temperature at local and regional scales. Methods: Monthly mean data of reproductive attributes associated with nesting females, nests, eggs and hatchlings were established using records from Gorgona’s National Natural Park nesting monitoring and were correlated (cross-correlations) with SST of Gorgona island and Panama Bight, and with the temperature variability of the El Niño 1+2, El Niño 3, El Niño 3.4 and El Niño 4 regions, their thermal anomalies, and the ONI and SOI indexes. Significant correlations were included in a Generalized Additive Model. Results: Highest inverse correlation since maximum correlation is 1 was established between visits to the beach, number of nesting females, number of nests, clutch size, incubation days and hatching success and Niño 1+2 region with a lag of 12 months, whereas egg diameter, egg weight, straight carapace length and width and weight of hatchlings were correlated with Niño 4 anomaly, SOI and ONI indexes. It was also found that there is a non-linear tendency to decrease number of nesting females, number of nests, clutch size, egg diameter and egg weight with regional positive anomalies. Conclusions: Nesting attributes of L. olivacea in Gorgona correlate mainly with variations in regional SST, being low at high sea surface temperatures the year prior to nesting (12-month lag). 2020 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44965969013 https://www.redalyc.org/journal/449/44965969013/ https://www.redalyc.org/journal/449/44965969013/html/ https://www.redalyc.org/journal/449/44965969013/44965969013.epub https://www.redalyc.org/journal/449/44965969013/movil 10.15517/RBT.V68I2.38642 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.68 |
| format | Artículo científico |
| id | redalyc_44965969013 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Relationship between sea surface temperature and the nesting of the Olive Ridley sea turtle Lepidochelys olivacea (Testudines: Cheloniidae) in Gorgona Island, Colombian Pacific María-Alejandra Ariza-Gallego Biología Colombia ENSO indexes conservation thermal anomaly Eastern Tropical Pacific Relationship between sea surface temperature and the nesting of the Olive Ridley sea turtle Lepidochelys olivacea (Testudines: Cheloniidae) in Gorgona Island, Colombian Pacific María-Alejandra Ariza-Gallego Julio-César Herrera-Carmona Luis Fernando Payán Alan Giraldo Biología Colombia ENSO indexes conservation thermal anomaly Eastern Tropical Pacific Introduction: Lepidochelys olivacea is the most abundant sea turtle in the Colombian Pacific and oceanographic conditions at the Eastern Tropical Pacific may have an effect on its reproductive behavior Objective: To assess the relationship between reproductive aspects of L. olivacea nesting at Gorgona island and sea surface temperature at local and regional scales. Methods: Monthly mean data of reproductive attributes associated with nesting females, nests, eggs and hatchlings were established using records from Gorgona’s National Natural Park nesting monitoring and were correlated (cross-correlations) with SST of Gorgona island and Panama Bight, and with the temperature variability of the El Niño 1+2, El Niño 3, El Niño 3.4 and El Niño 4 regions, their thermal anomalies, and the ONI and SOI indexes. Significant correlations were included in a Generalized Additive Model. Results: Highest inverse correlation since maximum correlation is 1 was established between visits to the beach, number of nesting females, number of nests, clutch size, incubation days and hatching success and Niño 1+2 region with a lag of 12 months, whereas egg diameter, egg weight, straight carapace length and width and weight of hatchlings were correlated with Niño 4 anomaly, SOI and ONI indexes. It was also found that there is a non-linear tendency to decrease number of nesting females, number of nests, clutch size, egg diameter and egg weight with regional positive anomalies. Conclusions: Nesting attributes of L. olivacea in Gorgona correlate mainly with variations in regional SST, being low at high sea surface temperatures the year prior to nesting (12-month lag). 2020 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44965969013 https://www.redalyc.org/journal/449/44965969013/ https://www.redalyc.org/journal/449/44965969013/html/ https://www.redalyc.org/journal/449/44965969013/44965969013.epub https://www.redalyc.org/journal/449/44965969013/movil 10.15517/RBT.V68I2.38642 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.68 |
| title | Relationship between sea surface temperature and the nesting of the Olive Ridley sea turtle Lepidochelys olivacea (Testudines: Cheloniidae) in Gorgona Island, Colombian Pacific |
| topic | Biología Colombia ENSO indexes conservation thermal anomaly Eastern Tropical Pacific |
| url | https://www.redalyc.org/articulo.oa?id=44965969013 https://www.redalyc.org/journal/449/44965969013/ https://www.redalyc.org/journal/449/44965969013/html/ https://www.redalyc.org/journal/449/44965969013/44965969013.epub https://www.redalyc.org/journal/449/44965969013/movil |