Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review
Historical accounts of large whales in Peruvian waters existed before modern commercial whaling. Research on baleen and sperm (Physeter macrocephalus) whales was intense during whaling, thus producing essential knowledge on these species. The populations of large whales have declined considerably wi...
Published in: | Latin American Journal of Aquatic Mammals |
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Sociedad Latinoamericana de Especialistas en Mamíferos Acuáticos (SOLAMAC)
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ftjlajam:oai:ojs.lajamjournal.org:article/1489 2023-05-15T15:36:25+02:00 Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review Cortez Casamayor, Sarai Guidino, Chiara Pacheco, Aldo Santiago 2022-10-31 application/pdf http://lajamjournal.org/index.php/lajam/article/view/1489 https://doi.org/10.5597/lajam00285 eng eng Sociedad Latinoamericana de Especialistas en Mamíferos Acuáticos (SOLAMAC) http://lajamjournal.org/index.php/lajam/article/view/1489/489 http://lajamjournal.org/index.php/lajam/article/view/1489 doi:10.5597/lajam00285 Copyright (c) 2022 Latin American Journal of Aquatic Mammals Latin American Journal of Aquatic Mammals; Vol. 17 No. 2 (2022); 74-92 2236-1057 1676-7497 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftjlajam https://doi.org/10.5597/lajam00285 2022-12-28T15:32:59Z Historical accounts of large whales in Peruvian waters existed before modern commercial whaling. Research on baleen and sperm (Physeter macrocephalus) whales was intense during whaling, thus producing essential knowledge on these species. The populations of large whales have declined considerably with whaling pressure since 1925 in Peruvian waters. After the whaling moratorium in 1985, research on these species decreased, and a considerable gap in knowledge exists until nowadays. This review aims to conduct a historical analysis of the spatial distribution and abundance of baleen and sperm whales in the waters of Peru. During whaling, sperm whale distribution and abundance received most of the research effort as this species was the most important target of the whaling fleet. Also, blue (Balaenoptera musculus) and Bryde’s whale (B. edeni brydei) were considered abundant in Peru. Changes in their distribution and abundance were evaluated mainly based on captures or climatic events. Following the cessation of whaling, sightings of these species were restricted to occasional surveys, limiting the assessment of possible current changes in their distribution and abundance, as well as the updating of existing information. Humpback whales (Megaptera novaeangliae) were considered overexploited at the beginning of commercial whaling. After the moratorium, this species population started to grow, expanding its distribution along the northern coast. Currently, the humpback whale is the most studied species due to the onset of whale-watching activities in 2009. This allowed us to update and increase the knowledge about its distribution and abundance in northern Peru. The findings of this study point at a need to considerably increase the research effort on large whales, particularly surveys to estimate population sizes of the species inhabiting the waters of Peru. Article in Journal/Newspaper Balaenoptera musculus Humpback Whale Megaptera novaeangliae Physeter macrocephalus Sperm whale Latin American Journal of Aquatic Mammals (LAJAM) Latin American Journal of Aquatic Mammals |
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Latin American Journal of Aquatic Mammals (LAJAM) |
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ftjlajam |
language |
English |
description |
Historical accounts of large whales in Peruvian waters existed before modern commercial whaling. Research on baleen and sperm (Physeter macrocephalus) whales was intense during whaling, thus producing essential knowledge on these species. The populations of large whales have declined considerably with whaling pressure since 1925 in Peruvian waters. After the whaling moratorium in 1985, research on these species decreased, and a considerable gap in knowledge exists until nowadays. This review aims to conduct a historical analysis of the spatial distribution and abundance of baleen and sperm whales in the waters of Peru. During whaling, sperm whale distribution and abundance received most of the research effort as this species was the most important target of the whaling fleet. Also, blue (Balaenoptera musculus) and Bryde’s whale (B. edeni brydei) were considered abundant in Peru. Changes in their distribution and abundance were evaluated mainly based on captures or climatic events. Following the cessation of whaling, sightings of these species were restricted to occasional surveys, limiting the assessment of possible current changes in their distribution and abundance, as well as the updating of existing information. Humpback whales (Megaptera novaeangliae) were considered overexploited at the beginning of commercial whaling. After the moratorium, this species population started to grow, expanding its distribution along the northern coast. Currently, the humpback whale is the most studied species due to the onset of whale-watching activities in 2009. This allowed us to update and increase the knowledge about its distribution and abundance in northern Peru. The findings of this study point at a need to considerably increase the research effort on large whales, particularly surveys to estimate population sizes of the species inhabiting the waters of Peru. |
format |
Article in Journal/Newspaper |
author |
Cortez Casamayor, Sarai Guidino, Chiara Pacheco, Aldo Santiago |
spellingShingle |
Cortez Casamayor, Sarai Guidino, Chiara Pacheco, Aldo Santiago Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review |
author_facet |
Cortez Casamayor, Sarai Guidino, Chiara Pacheco, Aldo Santiago |
author_sort |
Cortez Casamayor, Sarai |
title |
Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review |
title_short |
Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review |
title_full |
Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review |
title_fullStr |
Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review |
title_full_unstemmed |
Spatial distribution and abundance of baleen and sperm whales in the Peruvian sea: a historical review |
title_sort |
spatial distribution and abundance of baleen and sperm whales in the peruvian sea: a historical review |
publisher |
Sociedad Latinoamericana de Especialistas en Mamíferos Acuáticos (SOLAMAC) |
publishDate |
2022 |
url |
http://lajamjournal.org/index.php/lajam/article/view/1489 https://doi.org/10.5597/lajam00285 |
genre |
Balaenoptera musculus Humpback Whale Megaptera novaeangliae Physeter macrocephalus Sperm whale |
genre_facet |
Balaenoptera musculus Humpback Whale Megaptera novaeangliae Physeter macrocephalus Sperm whale |
op_source |
Latin American Journal of Aquatic Mammals; Vol. 17 No. 2 (2022); 74-92 2236-1057 1676-7497 |
op_relation |
http://lajamjournal.org/index.php/lajam/article/view/1489/489 http://lajamjournal.org/index.php/lajam/article/view/1489 doi:10.5597/lajam00285 |
op_rights |
Copyright (c) 2022 Latin American Journal of Aquatic Mammals |
op_doi |
https://doi.org/10.5597/lajam00285 |
container_title |
Latin American Journal of Aquatic Mammals |
_version_ |
1766366762983489536 |