| Tolerance of pupae and pharate adults of Callosobruchus subinnotatus Pic (Coleoptera: Bruchidae) to modified atmospheres: a function of metabolic rate. | |
| | |
MedLine Citation:
|
PMID: 12770246 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Three developmental stages (pupae, early pharate and late pharate adults) of Callosobruchus subinnotatus (Pic.) were investigated for their tolerance or susceptibility to four modified atmospheres. Two of these atmospheres were hypercarbic and two were hypoxic. The hypercarbic atmospheres were found to cause mortality earlier than hypoxic atmospheres. Late pharate adults died earlier than pupae or early pharate adults. Late pharate adults that survived the exposure took a longer time to eclose than the pupae or early pharate adult.Using high resolution microrespirometric techniques, it was possible to record the oxygen consumption rate and CO(2) output of different developmental stages in air. The metabolic rate was determined manometrically as the oxygen uptake rate at an ambient temperature of 25 degrees C. The oxygen uptake rate differed significantly between groups of 20 individuals of different stages (p<0.01; t-test). The lowest rate of oxygen uptake (510.6+/-52.2 &mgr;l g(-1) h(-1)) was recorded in pupae. Higher oxygen uptake rates were found in early pharate adults (668.4+/-45.6 &mgr;l g(-1) h(-1)) and late pharate adults (1171.2+/-45.0 &mgr;l g(-1) h(-1)), and adult beetles (1310.4+/-53.4 &mgr;l g(-1) h(-1)). The patterns of CO(2) release were similar to those of oxygen uptake. CO(2) release was highest in eclosed adults and late pharate adults followed by early pharate adults, and lowest in pupae. The mode of CO(2) release ranged from continuous CO(2) release in pupae to discontinuous CO(2) release in late pharate and eclosed adults. Thus, high metabolic rates, and perhaps, in conjunction with discontinuous CO(2) of late pharate adults are responsible for their higher susceptibility to modified atmospheres than pupae and early pharate adults. |
| | |
Authors:
|
G N. Mbata; S K. Hetz; C Reichmuth; C Adler |
Related Documents
:
|
23751166 - Gender and other disparities in referral to specialized heart failure clinics following... 10880416 - Effects of continuous positive airway pressure on cardiovascular outcomes in heart fail... 23603826 - 5-fluorouracil augmented needle revision of trabeculectomy: does the location of outflo... 22356596 - Determinants of long-term response to group therapy for dysfunctional fear of progressi... 22727656 - Following up the follow up-long-term complications in paediatric burns. 16401536 - Surgical treatment of paraannular aortic abscess. |
Publication Detail:
|
Type: JOURNAL ARTICLE |
Journal Detail:
|
Title: Journal of insect physiology Volume: 46 ISSN: 1879-1611 ISO Abbreviation: J. Insect Physiol. Publication Date: 2000 Feb |
Date Detail:
|
Created Date: 2003-May-28 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 2985080R Medline TA: J Insect Physiol Country: - |
Other Details:
|
Languages: ENG Pagination: 145-151 Citation Subset: - |
Affiliation:
|
Federal Biological Research Centre for Agriculture and Forestry, Institute for Stored Product Protection, Königin-Luise-Str. 19, 14195, Berlin, Germany |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Neurophysiological and behavioural evidence for an olfactory function for the dorsal organ and a gus...
Next Document: Inhibition of vitellogenin synthesis in Apis mellifera workers by a juvenile hormone analogue, pyrip...