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Abstract
AbstractOne of the largest nesting colonies of the Vulnerable loggerhead sea turtle Caretta caretta is in Cabo Verde. Here we present the first comprehensive study of loggerhead turtle nesting on the island of Maio in Cabo Verde. During 2016–2019 we monitored 38 km of undeveloped sandy beaches that have minimal artificial lighting and where all nesting on Maio takes place. We counted 4,063 nests in 2016, 5,429 in 2017, 14,364 in 2018 and 7,937 in 2019. The estimated total number of females was 1,016, 1,357, 3,591 and 1,984 in each of these years, respectively. Our findings suggest there are more loggerhead turtles nesting in Cabo Verde than previously estimated, and that this could be the species’ largest nesting subpopulation (followed by Florida, USA and Oman). The inter-annual hatching success (the proportion of eggs producing hatchlings) was 29–38% for the whole island but varied between sites. Our study of 250 clutches showed that flooding affected 38–61% and predation by crabs 40–42%, with hatching success on different beaches in the range of 1–59%. Poaching of eggs was rare (< 2% of clutches), but dogs predated 68.4% of all clutches on the beach nearest the largest human settlement. We evaluated different nest management strategies at multiple sites and estimated productivity of hatchlings (the number of hatchlings that would reach the sea for each management strategy), finding that hatcheries are not always the best option for nest management. As the beaches on Maio are relatively undisturbed, and there is a high abundance and density of turtle nests, the island should be protected as a globally important site for the conservation of the loggerhead turtle, and of coastal biodiversity more broadly.
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Cartagena‐Matos B, Lugué K, Fonseca P, Marques TA, Prieto R, Alves F. Trends in cetacean research in the Eastern North Atlantic. Mamm Rev 2021. [DOI: 10.1111/mam.12238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Bárbara Cartagena‐Matos
- cE3c‐ Centre for Ecology Evolution and Environmental Changes Faculty of Sciences University of Lisbon Portugal
| | - Klervi Lugué
- Oceanic Observatory of Madeira (OOM) Funchal Portugal
| | - Paulo Fonseca
- cE3c‐ Centre for Ecology Evolution and Environmental Changes Faculty of Sciences University of Lisbon Portugal
| | - Tiago A. Marques
- Centre for Research into Ecological and Environmental Modelling University of St Andrews St Andrews UK
- Departamento de Biologia Animal Centro de Estatística e Aplicações Faculdade de Ciências da Universidade de Lisboa Lisboa Portugal
| | - Rui Prieto
- MARE – Marine and Environmental Sciences Centre of Azores Institute of Marine Research (IMAR) University of the AzoresPortugal
| | - Filipe Alves
- Oceanic Observatory of Madeira (OOM) Funchal Portugal
- MARE – Marine and Environmental Sciences Centre/ARDITI, Madeira Portugal
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Cuevas E, Guzmán-Hernández V, Uribe-Martínez A, Raymundo-Sánchez A, Herrera-Pavon R. Identification of Potential Sea Turtle Bycatch Hotspots Using a Spatially Explicit Approach in the Yucatan Peninsula, Mexico. CHELONIAN CONSERVATION AND BIOLOGY 2018. [DOI: 10.2744/ccb-1263.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Eduardo Cuevas
- Pronatura Península de Yucatán, calle 32 #269 x 47 y 47ª, Col. Pinzon II C.P. 97205, Mérida, México []
| | - Vicente Guzmán-Hernández
- Área de Protección de Flora y Fauna Laguna de Términos, Comisión Nacional de Áreas Naturales Protegidas, Av. Adolfo López Mateos, Prolongación Playa Norte, C.P. 24140, Ciudad del Carmen, Campeche, México []
| | - Abigail Uribe-Martínez
- Posgrado en Geografía, Facultad de Filosofía y Letras, Universidad Nacional Autónoma de México, Ciudad Universitaria, Investigación Científica, Cd. Universitaria, 04510 Ciudad de México, CDMX []
| | - Ana Raymundo-Sánchez
- Pronatura Península de Yucatán, calle 32 #269 x 47 y 47ª, Col. Pinzon II C.P. 97205, Mérida, México []
| | - Roberto Herrera-Pavon
- El Colegio de la Frontera Sur, Unidad Chetumal, Av. del Centenario Km. 5.5, C.P. 7790 Chetumal, Mexico []
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