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Neoaplectana Carpocapsae: Respiration of Infective Juveniles

Neoaplectana Carpocapsae: Respiration of Infective Juveniles NEOAPLECTANA CARPOCAPSAE: RESPIRATION OF INFECTIVE JUVENILES BY MARTIN BURMAN and ALBERT E. PYE Department of Zoophysiology, University of UmeÅ, S-901 87 UMEÅ, Sweden The oxygen consumption of infective juveniles of the insect parasitic nematode Neoaplectana car- pocapsae, grown at 20° or 25°, was studied at 13°, 15°, 20°, 25° and 30° and at different times after harvesting. Nematode tolerance of oxygen deprivation was also investigated. Oxygen con- sumption was temperature dependent and was generally higher in infectives that developed at 20° (Q10~ 6.3; 18 mm3/mg/h, 30°) than those that developed at 25° (Q10~ 3.6; 12 mm3/mg/h, 30°). Respiration rates of nematodes incubated in buffer solution after harvesting decreased ap- proximately 65% during the first 7 hours, then remained constant during the next 2 days. Infective nematodes survived 43 days with O2 only 0.5% of saturation at 20°. Infective juveniles of the insect parasitic nematode Neoaplectana carpocapsae (Steinernematidae) are a developmental stage specialized for survival, disper- sal, and the infection of new hosts (Poinar, 1979). This third juvenile stage, en- sheathed in the second stage cuticle, is formed when environmental conditions are unfavourable. Since the nematode has potential as a biological control agent, the effects of environmental parameters upon http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Neoaplectana Carpocapsae: Respiration of Infective Juveniles

Nematologica , Volume 26 (2): 6 – Jan 1, 1980

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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529280X00107
Publisher site
See Article on Publisher Site

Abstract

NEOAPLECTANA CARPOCAPSAE: RESPIRATION OF INFECTIVE JUVENILES BY MARTIN BURMAN and ALBERT E. PYE Department of Zoophysiology, University of UmeÅ, S-901 87 UMEÅ, Sweden The oxygen consumption of infective juveniles of the insect parasitic nematode Neoaplectana car- pocapsae, grown at 20° or 25°, was studied at 13°, 15°, 20°, 25° and 30° and at different times after harvesting. Nematode tolerance of oxygen deprivation was also investigated. Oxygen con- sumption was temperature dependent and was generally higher in infectives that developed at 20° (Q10~ 6.3; 18 mm3/mg/h, 30°) than those that developed at 25° (Q10~ 3.6; 12 mm3/mg/h, 30°). Respiration rates of nematodes incubated in buffer solution after harvesting decreased ap- proximately 65% during the first 7 hours, then remained constant during the next 2 days. Infective nematodes survived 43 days with O2 only 0.5% of saturation at 20°. Infective juveniles of the insect parasitic nematode Neoaplectana carpocapsae (Steinernematidae) are a developmental stage specialized for survival, disper- sal, and the infection of new hosts (Poinar, 1979). This third juvenile stage, en- sheathed in the second stage cuticle, is formed when environmental conditions are unfavourable. Since the nematode has potential as a biological control agent, the effects of environmental parameters upon

Journal

NematologicaBrill

Published: Jan 1, 1980

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