Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus
Growth and mortality rates of three juvenile instars and adults of the oribatid mite Alaskozetes antarcticus were measured over a twelve month period using field enclosures m Its maritime Antarctic habitat A pattern was found of rapid growth during the short summer period (0 2-0 4 μg dry weight incr...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515948/ https://doi.org/10.1111/j.1600-0587.1994.tb00081.x |
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ftnerc:oai:nora.nerc.ac.uk:515948 2023-05-15T13:09:53+02:00 Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus Convey, Peter 1994 http://nora.nerc.ac.uk/id/eprint/515948/ https://doi.org/10.1111/j.1600-0587.1994.tb00081.x unknown Wiley Convey, Peter orcid:0000-0001-8497-9903 . 1994 Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus. Ecography, 17 (1). 97-107. https://doi.org/10.1111/j.1600-0587.1994.tb00081.x <https://doi.org/10.1111/j.1600-0587.1994.tb00081.x> Publication - Article PeerReviewed 1994 ftnerc https://doi.org/10.1111/j.1600-0587.1994.tb00081.x 2023-02-04T19:44:20Z Growth and mortality rates of three juvenile instars and adults of the oribatid mite Alaskozetes antarcticus were measured over a twelve month period using field enclosures m Its maritime Antarctic habitat A pattern was found of rapid growth during the short summer period (0 2-0 4 μg dry weight increment per day) followed by gradual weight loss overwinter Most individuals completed one instar per year, reaching a premoult resting phase by late summer, with the moult being delayed and relatively synchronised early the next summer A small proportion of proto- and deutonymphs completed two moults within one summer period After the final moult adults overwintered again before commencing oviposition, suggesting that the life cycle (egg-egg) will take at least five years Mortality was not biased towards any instar or time of year Highest individual growth rates were obtained at a constant temperature of 7°C in the laboratory However expenmentai increase of mean field temperature from 2 7 to 4 3°C by use of a plastic cloche led to decreased growth, although no change in moulting frequency or mortality rate Laboratory survival was greatest at 2°C and decreased with increasing temperature Alaskozetes antarcticus may be descnbed as ‘a’ (adversity) selected, showing an exceptionally long life cycle of five to six years and extensive physiological investment in survival adaptations Moult synchronisation in early summer, involving entering winter in the inactive premoult phase, will increase overwinter survival by reducing the chance of inoculative freezing from gut contents, and may be advantageous in maximising the time available for feeding during the subsequent summer, or ensuring proximity of the sexes after the final moult Article in Journal/Newspaper Alaskozetes antarcticus Antarc* Antarctic antarcticus Mite Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Ecography 17 1 97 107 |
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Natural Environment Research Council: NERC Open Research Archive |
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description |
Growth and mortality rates of three juvenile instars and adults of the oribatid mite Alaskozetes antarcticus were measured over a twelve month period using field enclosures m Its maritime Antarctic habitat A pattern was found of rapid growth during the short summer period (0 2-0 4 μg dry weight increment per day) followed by gradual weight loss overwinter Most individuals completed one instar per year, reaching a premoult resting phase by late summer, with the moult being delayed and relatively synchronised early the next summer A small proportion of proto- and deutonymphs completed two moults within one summer period After the final moult adults overwintered again before commencing oviposition, suggesting that the life cycle (egg-egg) will take at least five years Mortality was not biased towards any instar or time of year Highest individual growth rates were obtained at a constant temperature of 7°C in the laboratory However expenmentai increase of mean field temperature from 2 7 to 4 3°C by use of a plastic cloche led to decreased growth, although no change in moulting frequency or mortality rate Laboratory survival was greatest at 2°C and decreased with increasing temperature Alaskozetes antarcticus may be descnbed as ‘a’ (adversity) selected, showing an exceptionally long life cycle of five to six years and extensive physiological investment in survival adaptations Moult synchronisation in early summer, involving entering winter in the inactive premoult phase, will increase overwinter survival by reducing the chance of inoculative freezing from gut contents, and may be advantageous in maximising the time available for feeding during the subsequent summer, or ensuring proximity of the sexes after the final moult |
format |
Article in Journal/Newspaper |
author |
Convey, Peter |
spellingShingle |
Convey, Peter Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus |
author_facet |
Convey, Peter |
author_sort |
Convey, Peter |
title |
Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus |
title_short |
Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus |
title_full |
Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus |
title_fullStr |
Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus |
title_full_unstemmed |
Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus |
title_sort |
growth and survival strategy of the antarctic mite alaskozetes antarcticus |
publisher |
Wiley |
publishDate |
1994 |
url |
http://nora.nerc.ac.uk/id/eprint/515948/ https://doi.org/10.1111/j.1600-0587.1994.tb00081.x |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Mite |
genre_facet |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Mite |
op_relation |
Convey, Peter orcid:0000-0001-8497-9903 . 1994 Growth and survival strategy of the Antarctic mite Alaskozetes antarcticus. Ecography, 17 (1). 97-107. https://doi.org/10.1111/j.1600-0587.1994.tb00081.x <https://doi.org/10.1111/j.1600-0587.1994.tb00081.x> |
op_doi |
https://doi.org/10.1111/j.1600-0587.1994.tb00081.x |
container_title |
Ecography |
container_volume |
17 |
container_issue |
1 |
container_start_page |
97 |
op_container_end_page |
107 |
_version_ |
1766202887651721216 |