Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island
Although the non-crustacean arthropod fauna of the intertidal zone in the sub-Antarctic is both diverse and abundant, little is known about the biology of the species that occur in this habitat. Here, we provide information on the biology and osmoregulatory ability of the marine intertidal midge Tel...
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ftunstellenbosch:oai:scholar.sun.ac.za:10019.1/11637 2023-11-12T04:07:39+01:00 Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island Nondula N. Marshall D.J. Baxter R. Sinclair B.J. Chown S.L. 2004 http://hdl.handle.net/10019.1/11637 https://doi.org/10.1007/s00300-004-0619-z unknown Polar Biology 27 10 7224060 doi:10.1007/s00300-004-0619-z http://hdl.handle.net/10019.1/11637 abundance intertidal environment larva life history osmoregulation Indian Ocean Indian Ocean islands Marion Island Prince Edward Islands Arthropoda Chironomidae Chironomus thummi Crustacea Diptera Telmatogeton Article 2004 ftunstellenbosch https://doi.org/10.1007/s00300-004-0619-z 2023-10-22T07:32:53Z Although the non-crustacean arthropod fauna of the intertidal zone in the sub-Antarctic is both diverse and abundant, little is known about the biology of the species that occur in this habitat. Here, we provide information on the biology and osmoregulatory ability of the marine intertidal midge Telmatogeton amphibius (Eaton) (Diptera, Chironomidae) at Marion Island. Larval densities of this species in the lower shore zones can be as high as 16,000 individuals m-2 in their preferred habitat during peak abundance in summer. Winter abundances are substantially lower, and adults are much less abundant than larvae. Like other chironomids, this species has four larval instars and the flightless adult females have obligatory parthenogenesis. It is a strong osmoregulator. Larvae show little variation in body mass irrespective of whether they find themselves in freshwater or seawater, or are switched between the media. Haemolymph osmolality [ca. 400 milliosmol (mOsm)] varies by only 61 mOsm over a 1,520 mOsm range of the external medium. T. amphibius is similar in many respects to intertidal telmatogetonine midges found in other geographic regions. © Springer-Verlag 2004. Article Article in Journal/Newspaper Antarc* Antarctic Marion Island Polar Biology Prince Edward Islands Stellenbosch University: SUNScholar Research Repository Antarctic Indian Polar Biology 27 10 |
institution |
Open Polar |
collection |
Stellenbosch University: SUNScholar Research Repository |
op_collection_id |
ftunstellenbosch |
language |
unknown |
topic |
abundance intertidal environment larva life history osmoregulation Indian Ocean Indian Ocean islands Marion Island Prince Edward Islands Arthropoda Chironomidae Chironomus thummi Crustacea Diptera Telmatogeton |
spellingShingle |
abundance intertidal environment larva life history osmoregulation Indian Ocean Indian Ocean islands Marion Island Prince Edward Islands Arthropoda Chironomidae Chironomus thummi Crustacea Diptera Telmatogeton Nondula N. Marshall D.J. Baxter R. Sinclair B.J. Chown S.L. Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island |
topic_facet |
abundance intertidal environment larva life history osmoregulation Indian Ocean Indian Ocean islands Marion Island Prince Edward Islands Arthropoda Chironomidae Chironomus thummi Crustacea Diptera Telmatogeton |
description |
Although the non-crustacean arthropod fauna of the intertidal zone in the sub-Antarctic is both diverse and abundant, little is known about the biology of the species that occur in this habitat. Here, we provide information on the biology and osmoregulatory ability of the marine intertidal midge Telmatogeton amphibius (Eaton) (Diptera, Chironomidae) at Marion Island. Larval densities of this species in the lower shore zones can be as high as 16,000 individuals m-2 in their preferred habitat during peak abundance in summer. Winter abundances are substantially lower, and adults are much less abundant than larvae. Like other chironomids, this species has four larval instars and the flightless adult females have obligatory parthenogenesis. It is a strong osmoregulator. Larvae show little variation in body mass irrespective of whether they find themselves in freshwater or seawater, or are switched between the media. Haemolymph osmolality [ca. 400 milliosmol (mOsm)] varies by only 61 mOsm over a 1,520 mOsm range of the external medium. T. amphibius is similar in many respects to intertidal telmatogetonine midges found in other geographic regions. © Springer-Verlag 2004. Article |
format |
Article in Journal/Newspaper |
author |
Nondula N. Marshall D.J. Baxter R. Sinclair B.J. Chown S.L. |
author_facet |
Nondula N. Marshall D.J. Baxter R. Sinclair B.J. Chown S.L. |
author_sort |
Nondula N. |
title |
Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island |
title_short |
Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island |
title_full |
Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island |
title_fullStr |
Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island |
title_full_unstemmed |
Life history and osmoregulatory ability of Telmatogeton amphibius (Diptera, Chironomidae) at Marion Island |
title_sort |
life history and osmoregulatory ability of telmatogeton amphibius (diptera, chironomidae) at marion island |
publishDate |
2004 |
url |
http://hdl.handle.net/10019.1/11637 https://doi.org/10.1007/s00300-004-0619-z |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Marion Island Polar Biology Prince Edward Islands |
genre_facet |
Antarc* Antarctic Marion Island Polar Biology Prince Edward Islands |
op_relation |
Polar Biology 27 10 7224060 doi:10.1007/s00300-004-0619-z http://hdl.handle.net/10019.1/11637 |
op_doi |
https://doi.org/10.1007/s00300-004-0619-z |
container_title |
Polar Biology |
container_volume |
27 |
container_issue |
10 |
_version_ |
1782328235596447744 |