Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica
Pribilof Island blue king crab (BKC; Paralithodes platypus) were sampled by beam trawl in May and August of 1983 and April 1984 to determine timing of reproductive events. Biennial reproduction was found to be the result of slow ovarian growth in large, muciparous females, while smaller primiparous...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1989
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f89-120 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-120 |
id |
crcansciencepubl:10.1139/f89-120 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f89-120 2023-12-17T10:28:14+01:00 Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica Jensen, Gregory C. Armstrong, David A. 1989 http://dx.doi.org/10.1139/f89-120 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-120 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 6, page 932-940 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1989 crcansciencepubl https://doi.org/10.1139/f89-120 2023-11-19T13:39:15Z Pribilof Island blue king crab (BKC; Paralithodes platypus) were sampled by beam trawl in May and August of 1983 and April 1984 to determine timing of reproductive events. Biennial reproduction was found to be the result of slow ovarian growth in large, muciparous females, while smaller primiparous females are often able to spawn in two consecutive years. Mating and egg extrusion occur in late March to early May and eggs hatch in mid-April of the following year, consequently, the embryonic period and rate of development is approximately 12 mo, similar to that of its congener the red king crab (RKC; P. camtschatica). Comparison of the reproductive output of the two species revealed that despite the 2 yr ovarian cycle, BKC only produce 20–30% more dry egg mass at any carapace length than do RKC, a substantially smaller difference than previously calculated. One year after molt, females of both species are not significantly different in dry body weight over a size range of 100–140 mm carapace length, but RKC have produced about three times more dry ovarian weight than BKC of comparable size, suggesting that biennial reproduction in BKC may be the result of energetic limitations. Article in Journal/Newspaper blue king crab Paralithodes platypus Red king crab Alaska Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 46 6 932 940 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Jensen, Gregory C. Armstrong, David A. Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Pribilof Island blue king crab (BKC; Paralithodes platypus) were sampled by beam trawl in May and August of 1983 and April 1984 to determine timing of reproductive events. Biennial reproduction was found to be the result of slow ovarian growth in large, muciparous females, while smaller primiparous females are often able to spawn in two consecutive years. Mating and egg extrusion occur in late March to early May and eggs hatch in mid-April of the following year, consequently, the embryonic period and rate of development is approximately 12 mo, similar to that of its congener the red king crab (RKC; P. camtschatica). Comparison of the reproductive output of the two species revealed that despite the 2 yr ovarian cycle, BKC only produce 20–30% more dry egg mass at any carapace length than do RKC, a substantially smaller difference than previously calculated. One year after molt, females of both species are not significantly different in dry body weight over a size range of 100–140 mm carapace length, but RKC have produced about three times more dry ovarian weight than BKC of comparable size, suggesting that biennial reproduction in BKC may be the result of energetic limitations. |
format |
Article in Journal/Newspaper |
author |
Jensen, Gregory C. Armstrong, David A. |
author_facet |
Jensen, Gregory C. Armstrong, David A. |
author_sort |
Jensen, Gregory C. |
title |
Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica |
title_short |
Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica |
title_full |
Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica |
title_fullStr |
Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica |
title_full_unstemmed |
Biennial Reproductive Cycle of Blue King Crab, Paralithodes platypus , at the Pribilof Island, Alaska and Comparison to a Congener, P . camtschatica |
title_sort |
biennial reproductive cycle of blue king crab, paralithodes platypus , at the pribilof island, alaska and comparison to a congener, p . camtschatica |
publisher |
Canadian Science Publishing |
publishDate |
1989 |
url |
http://dx.doi.org/10.1139/f89-120 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-120 |
genre |
blue king crab Paralithodes platypus Red king crab Alaska |
genre_facet |
blue king crab Paralithodes platypus Red king crab Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 6, page 932-940 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f89-120 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
46 |
container_issue |
6 |
container_start_page |
932 |
op_container_end_page |
940 |
_version_ |
1785580273709088768 |