The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj.
Gammarus duebeni is found as far north as southern Labrador and northern Newfoundland in brackish water habitats, but is absent from fresh water in the northwest Atlantic region. A population at Holyrood, Newfoundland, has been studied from 1962 to 1968. Fifty percent maturity for the females occurs...
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Language: | English |
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Canadian Science Publishing
1969
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Online Access: | http://dx.doi.org/10.1139/z69-050 http://www.nrcresearchpress.com/doi/pdf/10.1139/z69-050 |
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crcansciencepubl:10.1139/z69-050 2024-04-07T07:54:08+00:00 The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj. Steele, D. H. Steele, V. J. 1969 http://dx.doi.org/10.1139/z69-050 http://www.nrcresearchpress.com/doi/pdf/10.1139/z69-050 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 47, issue 2, page 235-244 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1969 crcansciencepubl https://doi.org/10.1139/z69-050 2024-03-08T00:37:45Z Gammarus duebeni is found as far north as southern Labrador and northern Newfoundland in brackish water habitats, but is absent from fresh water in the northwest Atlantic region. A population at Holyrood, Newfoundland, has been studied from 1962 to 1968. Fifty percent maturity for the females occurs at 11.5 mm in the winter and 10.5 mm in the summer. Embryos increase in size with development but at the same stage are significantly larger in the winter than in the summer. Mature females produce a succession of broods between November and August, at which time they enter the resting stage. The November brood develops slowly at the prevailing winter temperature and the young are released the next March. Fecundity increases with size of female. The winter broods are reduced in size with development which is not true of those produced in the summer. Females have a higher mortality rate than males and survive at the most for 1 year. The males are larger and live longer. Article in Journal/Newspaper Newfoundland Northwest Atlantic Canadian Science Publishing Newfoundland Canadian Journal of Zoology 47 2 235 244 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Steele, D. H. Steele, V. J. The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj. |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Gammarus duebeni is found as far north as southern Labrador and northern Newfoundland in brackish water habitats, but is absent from fresh water in the northwest Atlantic region. A population at Holyrood, Newfoundland, has been studied from 1962 to 1968. Fifty percent maturity for the females occurs at 11.5 mm in the winter and 10.5 mm in the summer. Embryos increase in size with development but at the same stage are significantly larger in the winter than in the summer. Mature females produce a succession of broods between November and August, at which time they enter the resting stage. The November brood develops slowly at the prevailing winter temperature and the young are released the next March. Fecundity increases with size of female. The winter broods are reduced in size with development which is not true of those produced in the summer. Females have a higher mortality rate than males and survive at the most for 1 year. The males are larger and live longer. |
format |
Article in Journal/Newspaper |
author |
Steele, D. H. Steele, V. J. |
author_facet |
Steele, D. H. Steele, V. J. |
author_sort |
Steele, D. H. |
title |
The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj. |
title_short |
The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj. |
title_full |
The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj. |
title_fullStr |
The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj. |
title_full_unstemmed |
The biology of Gammarus (Crustacea, Amphipoda) in the northwestern Atlantic. I. Gammarus duebeni Lillj. |
title_sort |
biology of gammarus (crustacea, amphipoda) in the northwestern atlantic. i. gammarus duebeni lillj. |
publisher |
Canadian Science Publishing |
publishDate |
1969 |
url |
http://dx.doi.org/10.1139/z69-050 http://www.nrcresearchpress.com/doi/pdf/10.1139/z69-050 |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Newfoundland Northwest Atlantic |
genre_facet |
Newfoundland Northwest Atlantic |
op_source |
Canadian Journal of Zoology volume 47, issue 2, page 235-244 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z69-050 |
container_title |
Canadian Journal of Zoology |
container_volume |
47 |
container_issue |
2 |
container_start_page |
235 |
op_container_end_page |
244 |
_version_ |
1795670485045870592 |