Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)

Abstract: The results of a study on sighting frequency and relative abundance of delphinids along the coast of Northern Chile (18°30’S-25°23’S; from coast to 70°27°W), conducted between March and December 2000 in an area of 207.614,60 km2 are reported. The following eight species...

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Autores principales:	Buscaglia,M., Sielfeld,W., Aguayo-Lobo,A.
Lenguaje:	English
Publicado:	Universidad de Magallanes 2020
Materias:	Delphinus delphis Delphinus capensis Globicephala macrorhynchus Grampus griseus Lissodelphis peronii
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2020000200007
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spelling	oai:scielo:S0718-686X20200002000072020-11-18Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)Buscaglia,M.Sielfeld,W.Aguayo-Lobo,A. Delphinus delphis Delphinus capensis Globicephala macrorhynchus Grampus griseus Lissodelphis peronii Abstract: The results of a study on sighting frequency and relative abundance of delphinids along the coast of Northern Chile (18°30’S-25°23’S; from coast to 70°27°W), conducted between March and December 2000 in an area of 207.614,60 km2 are reported. The following eight species were sighted: Short-beaked Common Dolphin (Delphinus delphis), Long-beaked Common Dolphin (Delphinus capensis), Short- finned Pilot Whale (Globicephala macrorhynchus), Risso’s Dolphin (Grampus griseus), Dusky Dolphin (Lagenorhynchus obscurus), Southern Right Whale Dolphin (Lissodelphis peronii), Striped Dolphin (Stenella coeruleoalba) and Bottlenose Dolphin (Tursiops truncatus). The distribution of dolphins north of Tocopilla showed relationship with the coastal upwelling front of that area, while off the Mejillones Peninsula the relative abundance and diversity of dolphins was associated with the extensive upwelling plume described for this area. T truncatus was the most frequently sighted species (44.14% 111 herds) and represented 59.6% of the total observed specimens. L. peronii (15.10%) and L.obscurus (8.22%) follows numerically. Other species were represented by <4% of the total observed specimens. The here found species are common to the Peruvian coast. Missing species are Phocoena spinipinnis, a more coastal species than the area covered by the present survey and Pseudorca crassidens, Feresa attenuata, Peponocephala electra and Stenella longirostris, which are from warmer waters and associated with the Paracas area. This study provides a first estimate of the distribution and relative abundance of small cetaceans of the upwelling ecosystem of Northern Chile.info:eu-repo/semantics/openAccessUniversidad de MagallanesAnales del Instituto de la Patagonia v.48 n.2 20202020-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2020000200007en10.4067/S0718-686X2020000200007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Delphinus delphis Delphinus capensis Globicephala macrorhynchus Grampus griseus Lissodelphis peronii
spellingShingle	Delphinus delphis Delphinus capensis Globicephala macrorhynchus Grampus griseus Lissodelphis peronii Buscaglia,M. Sielfeld,W. Aguayo-Lobo,A. Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)
description	Abstract: The results of a study on sighting frequency and relative abundance of delphinids along the coast of Northern Chile (18°30’S-25°23’S; from coast to 70°27°W), conducted between March and December 2000 in an area of 207.614,60 km2 are reported. The following eight species were sighted: Short-beaked Common Dolphin (Delphinus delphis), Long-beaked Common Dolphin (Delphinus capensis), Short- finned Pilot Whale (Globicephala macrorhynchus), Risso’s Dolphin (Grampus griseus), Dusky Dolphin (Lagenorhynchus obscurus), Southern Right Whale Dolphin (Lissodelphis peronii), Striped Dolphin (Stenella coeruleoalba) and Bottlenose Dolphin (Tursiops truncatus). The distribution of dolphins north of Tocopilla showed relationship with the coastal upwelling front of that area, while off the Mejillones Peninsula the relative abundance and diversity of dolphins was associated with the extensive upwelling plume described for this area. T truncatus was the most frequently sighted species (44.14% 111 herds) and represented 59.6% of the total observed specimens. L. peronii (15.10%) and L.obscurus (8.22%) follows numerically. Other species were represented by <4% of the total observed specimens. The here found species are common to the Peruvian coast. Missing species are Phocoena spinipinnis, a more coastal species than the area covered by the present survey and Pseudorca crassidens, Feresa attenuata, Peponocephala electra and Stenella longirostris, which are from warmer waters and associated with the Paracas area. This study provides a first estimate of the distribution and relative abundance of small cetaceans of the upwelling ecosystem of Northern Chile.
author	Buscaglia,M. Sielfeld,W. Aguayo-Lobo,A.
author_facet	Buscaglia,M. Sielfeld,W. Aguayo-Lobo,A.
author_sort	Buscaglia,M.
title	Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)
title_short	Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)
title_full	Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)
title_fullStr	Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)
title_full_unstemmed	Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)
title_sort	dolphins distributions (mammalia: delphinidae) in an upwellings zone (chile)
publisher	Universidad de Magallanes
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2020000200007
work_keys_str_mv	AT buscagliam dolphinsdistributionsmammaliadelphinidaeinanupwellingszonechile AT sielfeldw dolphinsdistributionsmammaliadelphinidaeinanupwellingszonechile AT aguayoloboa dolphinsdistributionsmammaliadelphinidaeinanupwellingszonechile
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Dolphins distributions (Mammalia: delphinidae) in an upwellings zone (Chile)

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