Life cycle strategies in two Antarctic Collembola
1. Populations of two coexisting Antarctic Collembola were studied in the field and under constant conditions in the laboratory to determine their life cycles and to compare their energy utilisation. 2. In the field Parisotoma octooculata completes three to four moults during summer, overwintering e...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/523828/ https://doi.org/10.1007/BF00376874 |
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ftnerc:oai:nora.nerc.ac.uk:523828 2023-05-15T13:41:43+02:00 Life cycle strategies in two Antarctic Collembola Burn, A.J. 1984 http://nora.nerc.ac.uk/id/eprint/523828/ https://doi.org/10.1007/BF00376874 unknown Springer Burn, A.J. 1984 Life cycle strategies in two Antarctic Collembola. Oecologia, 64 (2). 223-229. https://doi.org/10.1007/BF00376874 <https://doi.org/10.1007/BF00376874> Publication - Article PeerReviewed 1984 ftnerc https://doi.org/10.1007/BF00376874 2023-02-04T19:48:35Z 1. Populations of two coexisting Antarctic Collembola were studied in the field and under constant conditions in the laboratory to determine their life cycles and to compare their energy utilisation. 2. In the field Parisotoma octooculata completes three to four moults during summer, overwintering either in the egg stage or in the fourth or fifth instars. Maturity is reached in the second year, with synchronous oviposition and hatching. Cryptopygus antarcticus has many overlapping generations, maturity is achieved in the third year and oviposition and hatching take place throughout the year. 3. In the laboratory P. octooculata has a faster rate of growth than C. antarcticus under constant conditions of temperature and humidity. Analysis of gut contents showed that the two species overlapped in their food range; the faster growth of P. octooculata being achieved by a faster consumption rate, since the two species had similar assimilation and production efficiencies. 4. The slower growth rate of C. antarcticus may not result from limited food availability, but from a better life cycle strategy for unpredictable environmental conditions. P. octooculata, which shows features more characteristic of temperate Collembola, may be a more recent Antarctic colonist. Article in Journal/Newspaper Antarc* Antarctic antarcticus Cryptopygus antarcticus Natural Environment Research Council: NERC Open Research Archive Antarctic Oecologia 64 2 223 229 |
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Natural Environment Research Council: NERC Open Research Archive |
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1. Populations of two coexisting Antarctic Collembola were studied in the field and under constant conditions in the laboratory to determine their life cycles and to compare their energy utilisation. 2. In the field Parisotoma octooculata completes three to four moults during summer, overwintering either in the egg stage or in the fourth or fifth instars. Maturity is reached in the second year, with synchronous oviposition and hatching. Cryptopygus antarcticus has many overlapping generations, maturity is achieved in the third year and oviposition and hatching take place throughout the year. 3. In the laboratory P. octooculata has a faster rate of growth than C. antarcticus under constant conditions of temperature and humidity. Analysis of gut contents showed that the two species overlapped in their food range; the faster growth of P. octooculata being achieved by a faster consumption rate, since the two species had similar assimilation and production efficiencies. 4. The slower growth rate of C. antarcticus may not result from limited food availability, but from a better life cycle strategy for unpredictable environmental conditions. P. octooculata, which shows features more characteristic of temperate Collembola, may be a more recent Antarctic colonist. |
format |
Article in Journal/Newspaper |
author |
Burn, A.J. |
spellingShingle |
Burn, A.J. Life cycle strategies in two Antarctic Collembola |
author_facet |
Burn, A.J. |
author_sort |
Burn, A.J. |
title |
Life cycle strategies in two Antarctic Collembola |
title_short |
Life cycle strategies in two Antarctic Collembola |
title_full |
Life cycle strategies in two Antarctic Collembola |
title_fullStr |
Life cycle strategies in two Antarctic Collembola |
title_full_unstemmed |
Life cycle strategies in two Antarctic Collembola |
title_sort |
life cycle strategies in two antarctic collembola |
publisher |
Springer |
publishDate |
1984 |
url |
http://nora.nerc.ac.uk/id/eprint/523828/ https://doi.org/10.1007/BF00376874 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic antarcticus Cryptopygus antarcticus |
genre_facet |
Antarc* Antarctic antarcticus Cryptopygus antarcticus |
op_relation |
Burn, A.J. 1984 Life cycle strategies in two Antarctic Collembola. Oecologia, 64 (2). 223-229. https://doi.org/10.1007/BF00376874 <https://doi.org/10.1007/BF00376874> |
op_doi |
https://doi.org/10.1007/BF00376874 |
container_title |
Oecologia |
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64 |
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2 |
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223 |
op_container_end_page |
229 |
_version_ |
1766155200084574208 |