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Titolo:
Cyclic CO2 release in Cryptotermes cavifrons Banks, Incisitermes tabogae (Snyder) and I-minor (Hagen) (Isoptera : Kalotermitidae)
Autore:
Shelton, TG; Appel, AG;
Indirizzi:
Auburn Univ, Dept Entomol & Plant Pathol, Auburn, AL 36849 USA Auburn Univ Auburn AL USA 36849 omol & Plant Pathol, Auburn, AL 36849 USA
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
fascicolo: 2-3, volume: 129, anno: 2001,
pagine: 681 - 693
SICI:
1095-6433(200106)129:2-3<681:CCRICC>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISCONTINUOUS GAS-EXCHANGE; WESTERN DRYWOOD TERMITE; CARBON-DIOXIDE RELEASE; WATER-LOSS; RESPIRATORY TRANSPIRATION; DROSOPHILA-MELANOGASTER; DESICCATION RESISTANCE; INSECTS; TEMPERATURE; VENTILATION;
Keywords:
drywood termites; respiratory physiology; CO2 release patterns; temperature modulation; cyclic CO2 release; flow-through respirometry;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Appel, AG Auburn Univ, Dept Entomol & Plant Pathol, 301 Funchess Hall, Auburn, AL 36849 USA Auburn Univ 301 Funchess Hall Auburn AL USA 36849 , AL 36849 USA
Citazione:
T.G. Shelton e A.G. Appel, "Cyclic CO2 release in Cryptotermes cavifrons Banks, Incisitermes tabogae (Snyder) and I-minor (Hagen) (Isoptera : Kalotermitidae)", COMP BIOC A, 129(2-3), 2001, pp. 681-693

Abstract

CO2 release patterns of three drywood termite species were investigated using flow-through respirometry techniques. Eight hours of real-time CO2 release data were recorded for pseudergates of Cryptotermes cavifrons Banks, Incisitermes minor (Hagen), and I. tabogae (Snyder) at 20-40 degreesC. Cyclicrelease of CO2 was observed in 20-90% of C. cavifrons, 70-100% of I. tabogae, and 87-100% of I. minor pseudergates. Variability of the recordings (calculated as the coefficient of variability or CV) was used to estimate the level of cycling in each recording. CV ranged from 14.53 +/- 2.57 (40 degreesC) to 32.33 +/- 1.12% (30 degreesC) in C. cavifrons, 20.24 +/- 2.44 (35 degreesC) to 67.3 +/- 10.3% (20 degreesC) in I. minor, and 15.9 +/- 1.46 (35degreesC) to 34.15 +/- 6.18% (20 degreesC) in I. tabogae. The relationshipbetween temperature and CV for each species was modeled using non-linear regression. CV of both Incisitermes spp. decreased exponentially with temperature, while C. cavifrons CV followed a Gaussian model, indicating an optimal cycling temperature of similar to 30 degreesC. Mean (V)over dot(CO2) values were determined for each species as a function of temperature, and ranged from 0.1 mi CO2 g(-1) h(-1) (I. minor at 20 degreesC) to 0.8 ml CO2 g(-1) h(-1) (C. cavifrons at 40 degreesC). For all three species, (V)over dot(CO2) significantly increased linearly with temperature. Colinearity tests indicated that different models described the (V)over dot(CO2) relationship with temperature for both genera. Q(10) values for (V)over dot(CO2) over therange of 20-40 degreesC were 1.92 for I. minor, 1.66 for I. tabogae, and 1.62 for C. cavifrons pseudergates. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 01:37:46