An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean
The Antarctic marine environment is extreme in its low temperatures and short periods of primary productivity. Invertebrates must therefore adapt to maximise reproductive output where low temperature and limited food slow larval development. Brooding is a common reproductive trait in Antarctic marin...
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ftnerc:oai:nora.nerc.ac.uk:19566 2023-05-15T13:45:12+02:00 An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean Reed, Adam J. Thatje, Sven Linse, Katrin 2013-01 http://nora.nerc.ac.uk/id/eprint/19566/ http://www.springerlink.com/content/y9u816656118gn83/ unknown Springer Reed, Adam J.; Thatje, Sven; Linse, Katrin orcid:0000-0003-3477-3047 . 2013 An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean. Polar Biology, 36 (1). 1-11. https://doi.org/10.1007/s00300-012-1233-0 <https://doi.org/10.1007/s00300-012-1233-0> Publication - Article PeerReviewed 2013 ftnerc https://doi.org/10.1007/s00300-012-1233-0 2023-02-04T19:32:22Z The Antarctic marine environment is extreme in its low temperatures and short periods of primary productivity. Invertebrates must therefore adapt to maximise reproductive output where low temperature and limited food slow larval development. Brooding is a common reproductive trait in Antarctic marine bivalves; larval development occurs within the mantle cavity, and larvae are released as fully developed young. Lissarca miliaris is a small, short-lived, shallow-water brooding bivalve of circum-Antarctic distribution and found most abundant in the sub-Antarctic Magellan Region and islands of the Scotia Arc. Here, an unusual hermaphrodite reproductive trait is described for L. miliaris from King George Island (62°14′S, 58°38′W) and Signy Island (60°42′S, 45°36′W), Antarctica, using histological and dissection techniques. Specimens demonstrate simultaneous and sequential hermaphrodite traits; male and female gonads develop simultaneously, but the production of oocytes is reduced while testes are ripe. Functional females are more abundant in specimens above 3 mm shell length, although male reproductive tissue persists and functional males are found in all size classes. The number of previtellogenic oocytes produced by far exceeds the number of oocytes extruded and brooded, which may indicate an ancestral link to a planktotrophic past. Hermaphroditism in L. miliaris maximises reproductive efficiency in a short-lived species, in which the female’s capacity to brood its young is limited, and demonstrates a specialised adaptation to a cold stenothermal and food-limited environment prevailing in the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctica King George Island Polar Biology Scotia Sea Signy Island Southern Ocean W. Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic King George Island Scotia Sea Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Polar Biology 36 1 1 11 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
The Antarctic marine environment is extreme in its low temperatures and short periods of primary productivity. Invertebrates must therefore adapt to maximise reproductive output where low temperature and limited food slow larval development. Brooding is a common reproductive trait in Antarctic marine bivalves; larval development occurs within the mantle cavity, and larvae are released as fully developed young. Lissarca miliaris is a small, short-lived, shallow-water brooding bivalve of circum-Antarctic distribution and found most abundant in the sub-Antarctic Magellan Region and islands of the Scotia Arc. Here, an unusual hermaphrodite reproductive trait is described for L. miliaris from King George Island (62°14′S, 58°38′W) and Signy Island (60°42′S, 45°36′W), Antarctica, using histological and dissection techniques. Specimens demonstrate simultaneous and sequential hermaphrodite traits; male and female gonads develop simultaneously, but the production of oocytes is reduced while testes are ripe. Functional females are more abundant in specimens above 3 mm shell length, although male reproductive tissue persists and functional males are found in all size classes. The number of previtellogenic oocytes produced by far exceeds the number of oocytes extruded and brooded, which may indicate an ancestral link to a planktotrophic past. Hermaphroditism in L. miliaris maximises reproductive efficiency in a short-lived species, in which the female’s capacity to brood its young is limited, and demonstrates a specialised adaptation to a cold stenothermal and food-limited environment prevailing in the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Reed, Adam J. Thatje, Sven Linse, Katrin |
spellingShingle |
Reed, Adam J. Thatje, Sven Linse, Katrin An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean |
author_facet |
Reed, Adam J. Thatje, Sven Linse, Katrin |
author_sort |
Reed, Adam J. |
title |
An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean |
title_short |
An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean |
title_full |
An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean |
title_fullStr |
An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean |
title_full_unstemmed |
An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean |
title_sort |
unusual hermaphrodite reproductive trait in the antarctic brooding bivalve lissarca miliaris (philobryidae) from the scotia sea, southern ocean |
publisher |
Springer |
publishDate |
2013 |
url |
http://nora.nerc.ac.uk/id/eprint/19566/ http://www.springerlink.com/content/y9u816656118gn83/ |
long_lat |
ENVELOPE(-45.595,-45.595,-60.708,-60.708) |
geographic |
Antarctic Southern Ocean The Antarctic King George Island Scotia Sea Signy Island |
geographic_facet |
Antarctic Southern Ocean The Antarctic King George Island Scotia Sea Signy Island |
genre |
Antarc* Antarctic Antarctica King George Island Polar Biology Scotia Sea Signy Island Southern Ocean W. Antarctica |
genre_facet |
Antarc* Antarctic Antarctica King George Island Polar Biology Scotia Sea Signy Island Southern Ocean W. Antarctica |
op_relation |
Reed, Adam J.; Thatje, Sven; Linse, Katrin orcid:0000-0003-3477-3047 . 2013 An unusual hermaphrodite reproductive trait in the Antarctic brooding bivalve Lissarca miliaris (Philobryidae) from the Scotia Sea, Southern Ocean. Polar Biology, 36 (1). 1-11. https://doi.org/10.1007/s00300-012-1233-0 <https://doi.org/10.1007/s00300-012-1233-0> |
op_doi |
https://doi.org/10.1007/s00300-012-1233-0 |
container_title |
Polar Biology |
container_volume |
36 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
11 |
_version_ |
1766216842768023552 |