Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores
Antarctic squids are widely known to play an important role in the diet of various Antarctic predators, although the biology of those squids and how that relates to their availability to their predators is poorly known. We assessed the reproductive system of the deep-sea giant warty Antarctic squid...
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ftnerc:oai:nora.nerc.ac.uk:517377 2023-05-15T13:49:34+02:00 Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores Laptikhovsky, V. Xavier, Jose C. 2017-12 text http://nora.nerc.ac.uk/id/eprint/517377/ https://nora.nerc.ac.uk/id/eprint/517377/1/Laptikhovsky%202017%20-%20Dwarf%20males%20of%20giant%20warty%20squid.pdf https://doi.org/10.1007/s00300-017-2158-4 en eng Springer https://nora.nerc.ac.uk/id/eprint/517377/1/Laptikhovsky%202017%20-%20Dwarf%20males%20of%20giant%20warty%20squid.pdf Laptikhovsky, V.; Xavier, Jose C. orcid:0000-0002-9621-6660 . 2017 Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores. Polar Biology, 40 (12). 2469-2474. https://doi.org/10.1007/s00300-017-2158-4 <https://doi.org/10.1007/s00300-017-2158-4> Biology and Microbiology Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1007/s00300-017-2158-4 2023-02-04T19:45:06Z Antarctic squids are widely known to play an important role in the diet of various Antarctic predators, although the biology of those squids and how that relates to their availability to their predators is poorly known. We assessed the reproductive system of the deep-sea giant warty Antarctic squid Kondakovia longimana under a predator–prey context. The spermatophores of male K. longimana are described, based on two specimens foraged by albatrosses at Bird Island, South Georgia (54°S, 38°W). Spermatophore length (SL) was 42–90 mm, head occupied mean = 1.8–2.4% SL, ejaculatory tube = 17–22% SL, cement body = 19–22% SL, seminal reservoir = 56–59% SL and rear empty part = 0.4–0.8% SL. All spermatophores of K. longimana in our study were normal and functional, and very dissimilar to those of other spent squid, in which the spermatophores have short, semi-transparent seminal reservoirs and a large empty rear part. Senescent male K. longimana could become available to predation by albatrosses (presumably being surfaced) with spermatophoric sacs (Needham’s sacs) containing at least a hundred of normal spermatophores having no evidence of reproductive system degeneration. From known relation between beak and body size all known adult males in K. longimana were dwarfs in respect to females. Our data also show that they have extended spermatophore production as in other squids. Article in Journal/Newspaper Antarc* Antarctic Antarctic Squid Bird Island Polar Biology Natural Environment Research Council: NERC Open Research Archive Antarctic Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Polar Biology 40 12 2469 2474 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Biology and Microbiology |
spellingShingle |
Biology and Microbiology Laptikhovsky, V. Xavier, Jose C. Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores |
topic_facet |
Biology and Microbiology |
description |
Antarctic squids are widely known to play an important role in the diet of various Antarctic predators, although the biology of those squids and how that relates to their availability to their predators is poorly known. We assessed the reproductive system of the deep-sea giant warty Antarctic squid Kondakovia longimana under a predator–prey context. The spermatophores of male K. longimana are described, based on two specimens foraged by albatrosses at Bird Island, South Georgia (54°S, 38°W). Spermatophore length (SL) was 42–90 mm, head occupied mean = 1.8–2.4% SL, ejaculatory tube = 17–22% SL, cement body = 19–22% SL, seminal reservoir = 56–59% SL and rear empty part = 0.4–0.8% SL. All spermatophores of K. longimana in our study were normal and functional, and very dissimilar to those of other spent squid, in which the spermatophores have short, semi-transparent seminal reservoirs and a large empty rear part. Senescent male K. longimana could become available to predation by albatrosses (presumably being surfaced) with spermatophoric sacs (Needham’s sacs) containing at least a hundred of normal spermatophores having no evidence of reproductive system degeneration. From known relation between beak and body size all known adult males in K. longimana were dwarfs in respect to females. Our data also show that they have extended spermatophore production as in other squids. |
format |
Article in Journal/Newspaper |
author |
Laptikhovsky, V. Xavier, Jose C. |
author_facet |
Laptikhovsky, V. Xavier, Jose C. |
author_sort |
Laptikhovsky, V. |
title |
Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores |
title_short |
Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores |
title_full |
Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores |
title_fullStr |
Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores |
title_full_unstemmed |
Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores |
title_sort |
dwarf males of giant warty squid kondakovia longimana and a description of their spermatophores |
publisher |
Springer |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/517377/ https://nora.nerc.ac.uk/id/eprint/517377/1/Laptikhovsky%202017%20-%20Dwarf%20males%20of%20giant%20warty%20squid.pdf https://doi.org/10.1007/s00300-017-2158-4 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Antarctic Bird Island |
geographic_facet |
Antarctic Bird Island |
genre |
Antarc* Antarctic Antarctic Squid Bird Island Polar Biology |
genre_facet |
Antarc* Antarctic Antarctic Squid Bird Island Polar Biology |
op_relation |
https://nora.nerc.ac.uk/id/eprint/517377/1/Laptikhovsky%202017%20-%20Dwarf%20males%20of%20giant%20warty%20squid.pdf Laptikhovsky, V.; Xavier, Jose C. orcid:0000-0002-9621-6660 . 2017 Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores. Polar Biology, 40 (12). 2469-2474. https://doi.org/10.1007/s00300-017-2158-4 <https://doi.org/10.1007/s00300-017-2158-4> |
op_doi |
https://doi.org/10.1007/s00300-017-2158-4 |
container_title |
Polar Biology |
container_volume |
40 |
container_issue |
12 |
container_start_page |
2469 |
op_container_end_page |
2474 |
_version_ |
1766251671057334272 |