Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes
Developmental modes, occurrence and distribution patterns of invertebrate larvae were studied in the Subantarctic Magellan region of South America on the basis of quantitative plankton hauls obtained during the "Victor Hensen" campaign in November 1994. The meroplankton community was found...
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ftawi:oai:epic.awi.de:9048 2023-09-05T13:14:09+02:00 Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes Thatje, S. Schiel, Sigrid Arntz, Wolf 2003 application/pdf https://epic.awi.de/id/eprint/9048/ https://epic.awi.de/id/eprint/9048/1/Tha2003g.pdf https://hdl.handle.net/10013/epic.19563 https://hdl.handle.net/10013/epic.19563.d001 unknown https://epic.awi.de/id/eprint/9048/1/Tha2003g.pdf https://hdl.handle.net/10013/epic.19563.d001 Thatje, S. , Schiel, S. and Arntz, W. (2003) Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes , Marine ecology-progress series:, 260 , pp. 195-207 . hdl:10013/epic.19563 EPIC3Marine ecology-progress series:, 260, pp. 195-207 Article isiRev 2003 ftawi 2023-08-22T19:47:48Z Developmental modes, occurrence and distribution patterns of invertebrate larvae were studied in the Subantarctic Magellan region of South America on the basis of quantitative plankton hauls obtained during the "Victor Hensen" campaign in November 1994. The meroplankton community was found to be numerically dominated by decapod crustacean larvae (47 %), followed by polychaetes (20 %), echinoderms (16 %), cirripedes (8 %) and molluscs (7 %). A rich decapod community was detected, with 2 thalassinid, 5 brachyuran, 4 anomuran, 6 caridean, one astacid and one palinurid species/morphotypes identified. Cluster analyses clearly distinguished deep-water stations (250-400 m) south of the Straits of Magellan from shallow-water stations (30-100 m) in the Beagle Channel, where meroplankton was dominated by decapod larvae (> 90 %). Three main larval developmental modes, characterised by morphogenesis, mode of larval nutrition, and site of larval development, were observed in Magellan decapods: (1) extended, planktotrophic development of planktonic larvae, (2) abbreviated, planktotrophic development of planktonic larvae, and (3) abbreviated, endotrophic (lecithotrophic) development of demersally living larvae. Several caridean shrimps with abbreviated larval development, which have congeners in the Antarctic, suggest a strong synchronisation between abbreviated planktotrophic larval development and short periods of primary production. This seems to be an essential factor in early life history adaptation for the colonisation of the Antarctic environment. The impoverished Antarctic decapod fauna, with only a few representatives of caridean shrimp species left, is discussed to be related to the lack in flexibility of reptant decapods in distributing energy resources between adults and their offspring, allowing abbreviated planktotrophic larval development. Article in Journal/Newspaper Antarc* Antarctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
Developmental modes, occurrence and distribution patterns of invertebrate larvae were studied in the Subantarctic Magellan region of South America on the basis of quantitative plankton hauls obtained during the "Victor Hensen" campaign in November 1994. The meroplankton community was found to be numerically dominated by decapod crustacean larvae (47 %), followed by polychaetes (20 %), echinoderms (16 %), cirripedes (8 %) and molluscs (7 %). A rich decapod community was detected, with 2 thalassinid, 5 brachyuran, 4 anomuran, 6 caridean, one astacid and one palinurid species/morphotypes identified. Cluster analyses clearly distinguished deep-water stations (250-400 m) south of the Straits of Magellan from shallow-water stations (30-100 m) in the Beagle Channel, where meroplankton was dominated by decapod larvae (> 90 %). Three main larval developmental modes, characterised by morphogenesis, mode of larval nutrition, and site of larval development, were observed in Magellan decapods: (1) extended, planktotrophic development of planktonic larvae, (2) abbreviated, planktotrophic development of planktonic larvae, and (3) abbreviated, endotrophic (lecithotrophic) development of demersally living larvae. Several caridean shrimps with abbreviated larval development, which have congeners in the Antarctic, suggest a strong synchronisation between abbreviated planktotrophic larval development and short periods of primary production. This seems to be an essential factor in early life history adaptation for the colonisation of the Antarctic environment. The impoverished Antarctic decapod fauna, with only a few representatives of caridean shrimp species left, is discussed to be related to the lack in flexibility of reptant decapods in distributing energy resources between adults and their offspring, allowing abbreviated planktotrophic larval development. |
format |
Article in Journal/Newspaper |
author |
Thatje, S. Schiel, Sigrid Arntz, Wolf |
spellingShingle |
Thatje, S. Schiel, Sigrid Arntz, Wolf Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes |
author_facet |
Thatje, S. Schiel, Sigrid Arntz, Wolf |
author_sort |
Thatje, S. |
title |
Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes |
title_short |
Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes |
title_full |
Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes |
title_fullStr |
Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes |
title_full_unstemmed |
Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes |
title_sort |
developmental trade-offs in subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes |
publishDate |
2003 |
url |
https://epic.awi.de/id/eprint/9048/ https://epic.awi.de/id/eprint/9048/1/Tha2003g.pdf https://hdl.handle.net/10013/epic.19563 https://hdl.handle.net/10013/epic.19563.d001 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
EPIC3Marine ecology-progress series:, 260, pp. 195-207 |
op_relation |
https://epic.awi.de/id/eprint/9048/1/Tha2003g.pdf https://hdl.handle.net/10013/epic.19563.d001 Thatje, S. , Schiel, S. and Arntz, W. (2003) Developmental trade-offs in Subantarctic meroplankton communities and the enigma of low decapod diversity in high southern latitudes , Marine ecology-progress series:, 260 , pp. 195-207 . hdl:10013/epic.19563 |
_version_ |
1776205194350034944 |