Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska
Rex sole (Glyptocephalus zachirus) have a wide distribution throughout the North Pacific, ranging from central Baja California to the western Bering Sea. Although rex sole are an important species in the commercial trawl fisheries off the U.S. West Coast, knowledge of their reproductive biology is l...
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ftaquaticcommons:oai:generic.eprints.org:8972 2023-05-15T15:43:59+02:00 Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska Abookire, Alisa A. 2006 application/pdf http://aquaticcommons.org/8972/ http://fishbull.noaa.gov/1043/abookire.pdf http://aquaticcommons.org/8972/1/abookire.pdf en eng http://aquaticcommons.org/8972/1/abookire.pdf Abookire, Alisa A. (2006) Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska. Fishery Bulletin, 104(3), pp. 350-359. Biology Ecology Fisheries Article PeerReviewed 2006 ftaquaticcommons 2020-02-27T09:23:18Z Rex sole (Glyptocephalus zachirus) have a wide distribution throughout the North Pacific, ranging from central Baja California to the western Bering Sea. Although rex sole are an important species in the commercial trawl fisheries off the U.S. West Coast, knowledge of their reproductive biology is limited to one study off the Oregon coast where ovaries were analyzed with gross anatomical methods. This study was initiated to determine reproductive and growth parameters specific to rex sole in the Gulf of Alaska (GOA) stock. Female rex sole (n=594) ranging in total length from 166 to 552 mm were collected opportunistically around Kodiak Island, Alaska, from February 2000 to October 2001. All ovaries were analyzed by using standard histological criteria to determine the maturity stage. Year-round sampling of rex sole ovaries confirmed that rex sole are batch spawners and have a protracted spawning season in the GOA that lasts at least eight months, from October to May; the duration of the spawning season and the months of spawning activity are different from those previously estimated. Female rex sole in the GOA had an estimated length at 50% maturity (ML50) of 352 mm, which is greater than the previously estimated ML50 at southern latitudes. The maximum age of collected female rex sole was 29 years, and the estimated age at 50% maturity (MA50) in the GOA was 5.1 years. The von Bertalanffy growth model for rex sole in the GOA was significantly different from the previously estimated model for rex sole off the Oregon coast. This study indicated that there are higher growth rates for rex sole in the GOA than off the Oregon coast and that there are differences in length at maturity and similarity in age at maturity between the two regions. Article in Journal/Newspaper Bering Sea Kodiak Alaska International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons Baja Bering Sea Gulf of Alaska Pacific |
institution |
Open Polar |
collection |
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
op_collection_id |
ftaquaticcommons |
language |
English |
topic |
Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Abookire, Alisa A. Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska |
topic_facet |
Biology Ecology Fisheries |
description |
Rex sole (Glyptocephalus zachirus) have a wide distribution throughout the North Pacific, ranging from central Baja California to the western Bering Sea. Although rex sole are an important species in the commercial trawl fisheries off the U.S. West Coast, knowledge of their reproductive biology is limited to one study off the Oregon coast where ovaries were analyzed with gross anatomical methods. This study was initiated to determine reproductive and growth parameters specific to rex sole in the Gulf of Alaska (GOA) stock. Female rex sole (n=594) ranging in total length from 166 to 552 mm were collected opportunistically around Kodiak Island, Alaska, from February 2000 to October 2001. All ovaries were analyzed by using standard histological criteria to determine the maturity stage. Year-round sampling of rex sole ovaries confirmed that rex sole are batch spawners and have a protracted spawning season in the GOA that lasts at least eight months, from October to May; the duration of the spawning season and the months of spawning activity are different from those previously estimated. Female rex sole in the GOA had an estimated length at 50% maturity (ML50) of 352 mm, which is greater than the previously estimated ML50 at southern latitudes. The maximum age of collected female rex sole was 29 years, and the estimated age at 50% maturity (MA50) in the GOA was 5.1 years. The von Bertalanffy growth model for rex sole in the GOA was significantly different from the previously estimated model for rex sole off the Oregon coast. This study indicated that there are higher growth rates for rex sole in the GOA than off the Oregon coast and that there are differences in length at maturity and similarity in age at maturity between the two regions. |
format |
Article in Journal/Newspaper |
author |
Abookire, Alisa A. |
author_facet |
Abookire, Alisa A. |
author_sort |
Abookire, Alisa A. |
title |
Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska |
title_short |
Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska |
title_full |
Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska |
title_fullStr |
Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska |
title_full_unstemmed |
Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska |
title_sort |
reproductive biology, spawning season, and growth of female rex sole (glyptocephalus zachirus) in the gulf of alaska |
publishDate |
2006 |
url |
http://aquaticcommons.org/8972/ http://fishbull.noaa.gov/1043/abookire.pdf http://aquaticcommons.org/8972/1/abookire.pdf |
geographic |
Baja Bering Sea Gulf of Alaska Pacific |
geographic_facet |
Baja Bering Sea Gulf of Alaska Pacific |
genre |
Bering Sea Kodiak Alaska |
genre_facet |
Bering Sea Kodiak Alaska |
op_relation |
http://aquaticcommons.org/8972/1/abookire.pdf Abookire, Alisa A. (2006) Reproductive biology, spawning season, and growth of female rex sole (Glyptocephalus zachirus) in the Gulf of Alaska. Fishery Bulletin, 104(3), pp. 350-359. |
_version_ |
1766378201395757056 |