Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus):
Sperm whales are widely distributed across the entire North Pacific and into the southern Bering Sea in summer but the majority are thought to be south of 40oN in winter (Rice 1974; Gosho et al. 1984; Miyashita et al. 1995). For management, the International Whaling Commission (IWC) had divided the...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.8162 http://www.nmfs.noaa.gov/pr/pdfs/sars/po2003whsp-cow.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.294.8162 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.294.8162 2023-05-15T15:43:56+02:00 Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus): Stock Definition Geographic Range The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.8162 http://www.nmfs.noaa.gov/pr/pdfs/sars/po2003whsp-cow.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.8162 http://www.nmfs.noaa.gov/pr/pdfs/sars/po2003whsp-cow.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.nmfs.noaa.gov/pr/pdfs/sars/po2003whsp-cow.pdf text ftciteseerx 2016-01-07T21:44:33Z Sperm whales are widely distributed across the entire North Pacific and into the southern Bering Sea in summer but the majority are thought to be south of 40oN in winter (Rice 1974; Gosho et al. 1984; Miyashita et al. 1995). For management, the International Whaling Commission (IWC) had divided the North Pacific into two management regions (Donovan 1991) defined by a zig-zag line which starts at 150oW at the equator, is 160oW between 40-50oN, and ends up at 180oW north of 50oN; however, the IWC has not reviewed this stock boundary in many years (Donovan 1991). Sperm whales are found year-round in California waters (Dohl et al. 1983; Barlow 1995; Forney et al. 1995), but they reach peak abundance from April through mid-June and from the end of August through mid-November (Rice 1974). They were seen in every season except winter (Dec.-Feb.) in Washington and Oregon (Green et al. 1992). Of 176 sperm whales that were marked with Discovery tags off southern California in winter 1962-70, only three were recovered by whalers: one off northern California in June, one off Washington in June, and another far off British Columbia in April (Rice 1974). Recent summer/fall surveys in the eastern tropical Pacific (Wade and Gerrodette 1993) show that although sperm whales are widely distributed in the tropics, their relative abundance tapers off markedly westward towards the middle of the tropical Pacific (near the IWC stock boundary at 150oW) and tapers off northward towards the tip of Baja California. The structure of sperm whale populations in the eastern tropical Pacific is not known, but the only photographic matches of known individuals from this area have been between the Galapagos Islands and coastal waters of South America (Dufault and Whitehead 1995), suggesting that the eastern tropical animals Text Bering Sea Physeter macrocephalus Sperm whale Unknown Baja Bering Sea Galapagos Pacific |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Sperm whales are widely distributed across the entire North Pacific and into the southern Bering Sea in summer but the majority are thought to be south of 40oN in winter (Rice 1974; Gosho et al. 1984; Miyashita et al. 1995). For management, the International Whaling Commission (IWC) had divided the North Pacific into two management regions (Donovan 1991) defined by a zig-zag line which starts at 150oW at the equator, is 160oW between 40-50oN, and ends up at 180oW north of 50oN; however, the IWC has not reviewed this stock boundary in many years (Donovan 1991). Sperm whales are found year-round in California waters (Dohl et al. 1983; Barlow 1995; Forney et al. 1995), but they reach peak abundance from April through mid-June and from the end of August through mid-November (Rice 1974). They were seen in every season except winter (Dec.-Feb.) in Washington and Oregon (Green et al. 1992). Of 176 sperm whales that were marked with Discovery tags off southern California in winter 1962-70, only three were recovered by whalers: one off northern California in June, one off Washington in June, and another far off British Columbia in April (Rice 1974). Recent summer/fall surveys in the eastern tropical Pacific (Wade and Gerrodette 1993) show that although sperm whales are widely distributed in the tropics, their relative abundance tapers off markedly westward towards the middle of the tropical Pacific (near the IWC stock boundary at 150oW) and tapers off northward towards the tip of Baja California. The structure of sperm whale populations in the eastern tropical Pacific is not known, but the only photographic matches of known individuals from this area have been between the Galapagos Islands and coastal waters of South America (Dufault and Whitehead 1995), suggesting that the eastern tropical animals |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Stock Definition Geographic Range |
spellingShingle |
Stock Definition Geographic Range Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus): |
author_facet |
Stock Definition Geographic Range |
author_sort |
Stock Definition |
title |
Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus): |
title_short |
Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus): |
title_full |
Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus): |
title_fullStr |
Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus): |
title_full_unstemmed |
Revised 12/15/2003 SPERM WHALE (Physeter macrocephalus): |
title_sort |
revised 12/15/2003 sperm whale (physeter macrocephalus): |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.8162 http://www.nmfs.noaa.gov/pr/pdfs/sars/po2003whsp-cow.pdf |
geographic |
Baja Bering Sea Galapagos Pacific |
geographic_facet |
Baja Bering Sea Galapagos Pacific |
genre |
Bering Sea Physeter macrocephalus Sperm whale |
genre_facet |
Bering Sea Physeter macrocephalus Sperm whale |
op_source |
http://www.nmfs.noaa.gov/pr/pdfs/sars/po2003whsp-cow.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.8162 http://www.nmfs.noaa.gov/pr/pdfs/sars/po2003whsp-cow.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766378152278360064 |