Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand
Specimens of the onychoteuthid squid Moroteuthis ingens were collected on the northwest Chatham Rise off the east coast of New Zealand during late June/ early July 1997. Trawl depth ranged between 751 and 1,151 m. A total of 89 squid were captured (65 males, 24 females). Except for one immature (sta...
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2001
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Online Access: | https://doi.org/10.1007/s003000000178 http://ecite.utas.edu.au/22620 |
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ftunivtasecite:oai:ecite.utas.edu.au:22620 2023-05-15T18:02:00+02:00 Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand Jackson, GD 2001 https://doi.org/10.1007/s003000000178 http://ecite.utas.edu.au/22620 en eng Springer-Verlag http://dx.doi.org/10.1007/s003000000178 Jackson, GD, Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand , Polar Biology, 24, (2) pp. 97-100. ISSN 0722-4060 (2001) [Refereed Article] http://ecite.utas.edu.au/22620 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2001 ftunivtasecite https://doi.org/10.1007/s003000000178 2019-12-13T21:04:31Z Specimens of the onychoteuthid squid Moroteuthis ingens were collected on the northwest Chatham Rise off the east coast of New Zealand during late June/ early July 1997. Trawl depth ranged between 751 and 1,151 m. A total of 89 squid were captured (65 males, 24 females). Except for one immature (stage 2) female, all the individuals collected were either mature (stage 5) or spent (stage 6). There was no significant difference in testis weight between stage-5 and stage-6 males but there was a significant difference in mantle weight and total weight. There was also a significant difference in ovary weight and total weight between stage-5 and stage-6 females but no significant difference in mantle weight. Female fecundity ranged from 84,379 to 286,795 with a mean oocyte size of 2.1 mm. This study confirms that winter is a spawning period for M. ingens and that the Chatham Rise is a spawning region for this species. Article in Journal/Newspaper Polar Biology eCite UTAS (University of Tasmania) New Zealand Polar Biology 24 2 97 100 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Jackson, GD Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
Specimens of the onychoteuthid squid Moroteuthis ingens were collected on the northwest Chatham Rise off the east coast of New Zealand during late June/ early July 1997. Trawl depth ranged between 751 and 1,151 m. A total of 89 squid were captured (65 males, 24 females). Except for one immature (stage 2) female, all the individuals collected were either mature (stage 5) or spent (stage 6). There was no significant difference in testis weight between stage-5 and stage-6 males but there was a significant difference in mantle weight and total weight. There was also a significant difference in ovary weight and total weight between stage-5 and stage-6 females but no significant difference in mantle weight. Female fecundity ranged from 84,379 to 286,795 with a mean oocyte size of 2.1 mm. This study confirms that winter is a spawning period for M. ingens and that the Chatham Rise is a spawning region for this species. |
format |
Article in Journal/Newspaper |
author |
Jackson, GD |
author_facet |
Jackson, GD |
author_sort |
Jackson, GD |
title |
Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand |
title_short |
Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand |
title_full |
Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand |
title_fullStr |
Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand |
title_full_unstemmed |
Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand |
title_sort |
confirmation of winter spawning of moroteuthis ingens (cephalopoda : onychoteuthidae) in the chatham rise region of new zealand |
publisher |
Springer-Verlag |
publishDate |
2001 |
url |
https://doi.org/10.1007/s003000000178 http://ecite.utas.edu.au/22620 |
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New Zealand |
geographic_facet |
New Zealand |
genre |
Polar Biology |
genre_facet |
Polar Biology |
op_relation |
http://dx.doi.org/10.1007/s003000000178 Jackson, GD, Confirmation of winter spawning of Moroteuthis ingens (Cephalopoda : Onychoteuthidae) in the Chatham Rise region of New Zealand , Polar Biology, 24, (2) pp. 97-100. ISSN 0722-4060 (2001) [Refereed Article] http://ecite.utas.edu.au/22620 |
op_doi |
https://doi.org/10.1007/s003000000178 |
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Polar Biology |
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24 |
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2 |
container_start_page |
97 |
op_container_end_page |
100 |
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1766171652052221952 |