Stranding and incidental catch of sea turtles in the coastal Tumbes, Peru
Strandings and incidental catches of four sea turtles species (Chelonia mydas, Lepidochelys olivacea, Dermochelys coriacea and Eretmochelys imbricata) were registered in Tumbes Region since August 2007 to August 2009. These registers (52.6% of strandings and 47.4% of incidental catches) occurred dur...
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Format: | Article |
Language: | English |
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Universidad Nacional Mayor de San Marcos
2011-05-01
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Series: | Revista Peruana de Biología |
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Online Access: | http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/4 |
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author | Carlos A. Rosales Manuel Vera Jorge Llanos |
author_facet | Carlos A. Rosales Manuel Vera Jorge Llanos |
author_sort | Carlos A. Rosales |
collection | DOAJ |
description | Strandings and incidental catches of four sea turtles species (Chelonia mydas, Lepidochelys olivacea, Dermochelys coriacea and Eretmochelys imbricata) were registered in Tumbes Region since August 2007 to August 2009. These registers (52.6% of strandings and 47.4% of incidental catches) occurred during all year; most frequently in Punta Picos (50.5%), Canoas (20.0%) and Baja de Punta Mero (14.7%). The most registered species were C. mydas (64.2%) and L. olivacea (30.5%); their sizes did not present significant differences between areas and climatic seasons. The higher percentage of C. mydas, L. olivacea and D. coriacea were considered sub-adults, including the only specimen of E. imbricata. The incidental catches were made with gillnets of different mesh sizes, but 8 inches mesh was most frequently. A high proportions of specimens were died with signs of drowning (22.2%) this was due to the prolonged time of soak time of gillnet (approximately 12 hours). No significant differences in CPUE were found between climatic seasons and no seasonal pattern was evident. Lesions in 14% of stranded specimens were caused possibly by human attacks or by collisions with fishing boats. 77.8% of incidental catch specimens were sacrificed for the commercialization of his meat, and sometimes of his shell, this shows the lack of awareness of conservation. These observations indicate that the coast of Tumbes is an important foraging area and development of sub-adult specimens of sea turtles; so it is recomend to develop monitoring, awareness and critical areas protection programs to foment the conservation of these organisms in the Eastern Pacific. |
first_indexed | 2024-04-13T07:34:53Z |
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id | doaj.art-3e3e9094ae3f4efeb122d8e611f402cf |
institution | Directory Open Access Journal |
issn | 1561-0837 1727-9933 |
language | English |
last_indexed | 2024-04-13T07:34:53Z |
publishDate | 2011-05-01 |
publisher | Universidad Nacional Mayor de San Marcos |
record_format | Article |
series | Revista Peruana de Biología |
spelling | doaj.art-3e3e9094ae3f4efeb122d8e611f402cf2022-12-22T02:56:13ZengUniversidad Nacional Mayor de San MarcosRevista Peruana de Biología1561-08371727-99332011-05-0117329330110.15381/rpb.v17i3.44Stranding and incidental catch of sea turtles in the coastal Tumbes, PeruCarlos A. Rosales0Manuel Vera1Jorge Llanos2IMARPE, Instituto del Mar del Perú – Sede Tumbes, Calle José Olaya S/N, C.P. Nueva Esperanza, Zorritos, Ctralm. Villar, Tumbes.IMARPE, Instituto del Mar del Perú – Sede Tumbes, Calle José Olaya S/N, C.P. Nueva Esperanza, Zorritos, Ctralm. Villar, Tumbes.IMARPE, Instituto del Mar del Perú – Sede Lambayeque. Calle Los Pinos S/N, Santa Rosa, Chiclayo, Lambayeque.Strandings and incidental catches of four sea turtles species (Chelonia mydas, Lepidochelys olivacea, Dermochelys coriacea and Eretmochelys imbricata) were registered in Tumbes Region since August 2007 to August 2009. These registers (52.6% of strandings and 47.4% of incidental catches) occurred during all year; most frequently in Punta Picos (50.5%), Canoas (20.0%) and Baja de Punta Mero (14.7%). The most registered species were C. mydas (64.2%) and L. olivacea (30.5%); their sizes did not present significant differences between areas and climatic seasons. The higher percentage of C. mydas, L. olivacea and D. coriacea were considered sub-adults, including the only specimen of E. imbricata. The incidental catches were made with gillnets of different mesh sizes, but 8 inches mesh was most frequently. A high proportions of specimens were died with signs of drowning (22.2%) this was due to the prolonged time of soak time of gillnet (approximately 12 hours). No significant differences in CPUE were found between climatic seasons and no seasonal pattern was evident. Lesions in 14% of stranded specimens were caused possibly by human attacks or by collisions with fishing boats. 77.8% of incidental catch specimens were sacrificed for the commercialization of his meat, and sometimes of his shell, this shows the lack of awareness of conservation. These observations indicate that the coast of Tumbes is an important foraging area and development of sub-adult specimens of sea turtles; so it is recomend to develop monitoring, awareness and critical areas protection programs to foment the conservation of these organisms in the Eastern Pacific.http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/4Tortuga verdeTortuga oliváceaTortuga dorso de cueroTortuga careyPacífico Oriental Tropical. |
spellingShingle | Carlos A. Rosales Manuel Vera Jorge Llanos Stranding and incidental catch of sea turtles in the coastal Tumbes, Peru Revista Peruana de Biología Tortuga verde Tortuga olivácea Tortuga dorso de cuero Tortuga carey Pacífico Oriental Tropical. |
title | Stranding and incidental catch of sea turtles in the coastal Tumbes, Peru |
title_full | Stranding and incidental catch of sea turtles in the coastal Tumbes, Peru |
title_fullStr | Stranding and incidental catch of sea turtles in the coastal Tumbes, Peru |
title_full_unstemmed | Stranding and incidental catch of sea turtles in the coastal Tumbes, Peru |
title_short | Stranding and incidental catch of sea turtles in the coastal Tumbes, Peru |
title_sort | stranding and incidental catch of sea turtles in the coastal tumbes peru |
topic | Tortuga verde Tortuga olivácea Tortuga dorso de cuero Tortuga carey Pacífico Oriental Tropical. |
url | http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/4 |
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