Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska
Arrowtooth flounder (Atheresthes stomias) has the highest biomass of any groundfish species in the Gulf of Alaska, is a voracious predator of age 1 walleye pollock (Theragra chalcogramma), and is a major component in the diet of Steller sea lions (Eumetopias jubatus). Owing to its ecological importa...
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ftoceandocs:oai:aquadocs.org:1834/20282 2023-05-15T17:04:41+02:00 Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska Blood, Deborah M. Matarese, Ann C. Busby, Morgan S. 2007 application/pdf http://hdl.handle.net/1834/20282 en eng NOAA/National Marine Fisheries Service Seattle, WA NOAA Professional Paper NMFS http://spo.nwr.noaa.gov.pp7.pdf http://hdl.handle.net/1834/20282 http://aquaticcommons.org/id/eprint/2478 403 2011-09-29 18:55:56 2478 United States National Marine Fisheries Service Ecology Management Fisheries monograph 2007 ftoceandocs 2023-04-06T17:01:36Z Arrowtooth flounder (Atheresthes stomias) has the highest biomass of any groundfish species in the Gulf of Alaska, is a voracious predator of age 1 walleye pollock (Theragra chalcogramma), and is a major component in the diet of Steller sea lions (Eumetopias jubatus). Owing to its ecological importance in the Gulf of Alaska and the limitedinformation available on its reproduction, interest has intensified in describing its spawning and early life history.A study was undertaken in late January–February 2001–2003 in the Gulf of Alaska to obtain information on adult spawning location, depth distribution, and sexual maturity, and to obtain fertilized eggs for laboratory studies. Adults were found 200–600 m deep east of Kodiak Islandover the outer continental shelf and upper slope, and southwest along the shelf break to the Shumagin Islands. Most ripe females (oocytes extruded with light pressure)were found at 400 m and most ripe males (milt extruded with light pressure) were found at depths ≥450 m. Eggs werefertilized and incubated in the laboratory at 3.0°, 4.5°, and 6.0°C. Eggs were reared to hatching, but larvae did not survive long enough to complete yolk absorption and develop pigment. Eggs were staged according to morphological hallmarks and incubation data were used to produce a stage duration table and a regression model to estimate egg age based on water temperature and developmental stage.Arrowtooth flounder eggs (1.58–1.98 mm in diameter) were collected in ichthyoplankton surveys along the continentalshelf edge, primarily at depths ≥400 m. Early-stage eggs were found in tows that sampled to depths of ≥450 m. Larvae,which hatch between 3.9 and 4.8 mm standard length, increased in abundance with depth. Observations on arrowtooth flounder eggs and early-stage larvae wereused to complete the description of the published partial developmental series.(PDF file contains 34 pages.) Book Kodiak Theragra chalcogramma Alaska IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Gulf of Alaska |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Ecology Management Fisheries |
spellingShingle |
Ecology Management Fisheries Blood, Deborah M. Matarese, Ann C. Busby, Morgan S. Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska |
topic_facet |
Ecology Management Fisheries |
description |
Arrowtooth flounder (Atheresthes stomias) has the highest biomass of any groundfish species in the Gulf of Alaska, is a voracious predator of age 1 walleye pollock (Theragra chalcogramma), and is a major component in the diet of Steller sea lions (Eumetopias jubatus). Owing to its ecological importance in the Gulf of Alaska and the limitedinformation available on its reproduction, interest has intensified in describing its spawning and early life history.A study was undertaken in late January–February 2001–2003 in the Gulf of Alaska to obtain information on adult spawning location, depth distribution, and sexual maturity, and to obtain fertilized eggs for laboratory studies. Adults were found 200–600 m deep east of Kodiak Islandover the outer continental shelf and upper slope, and southwest along the shelf break to the Shumagin Islands. Most ripe females (oocytes extruded with light pressure)were found at 400 m and most ripe males (milt extruded with light pressure) were found at depths ≥450 m. Eggs werefertilized and incubated in the laboratory at 3.0°, 4.5°, and 6.0°C. Eggs were reared to hatching, but larvae did not survive long enough to complete yolk absorption and develop pigment. Eggs were staged according to morphological hallmarks and incubation data were used to produce a stage duration table and a regression model to estimate egg age based on water temperature and developmental stage.Arrowtooth flounder eggs (1.58–1.98 mm in diameter) were collected in ichthyoplankton surveys along the continentalshelf edge, primarily at depths ≥400 m. Early-stage eggs were found in tows that sampled to depths of ≥450 m. Larvae,which hatch between 3.9 and 4.8 mm standard length, increased in abundance with depth. Observations on arrowtooth flounder eggs and early-stage larvae wereused to complete the description of the published partial developmental series.(PDF file contains 34 pages.) |
format |
Book |
author |
Blood, Deborah M. Matarese, Ann C. Busby, Morgan S. |
author_facet |
Blood, Deborah M. Matarese, Ann C. Busby, Morgan S. |
author_sort |
Blood, Deborah M. |
title |
Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska |
title_short |
Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska |
title_full |
Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska |
title_fullStr |
Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska |
title_full_unstemmed |
Spawning, egg development, and early life history dynamics of arrowtooth flounder (Atheresthes stomias) in the Gulf of Alaska |
title_sort |
spawning, egg development, and early life history dynamics of arrowtooth flounder (atheresthes stomias) in the gulf of alaska |
publisher |
NOAA/National Marine Fisheries Service |
publishDate |
2007 |
url |
http://hdl.handle.net/1834/20282 |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
Kodiak Theragra chalcogramma Alaska |
genre_facet |
Kodiak Theragra chalcogramma Alaska |
op_source |
http://aquaticcommons.org/id/eprint/2478 403 2011-09-29 18:55:56 2478 United States National Marine Fisheries Service |
op_relation |
NOAA Professional Paper NMFS http://spo.nwr.noaa.gov.pp7.pdf http://hdl.handle.net/1834/20282 |
_version_ |
1766058995927220224 |