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Titolo:
The thermal environment of arboreal pools and its effects on the metabolism of the arboreal, oophagous tadpoles of a Taiwanese tree frog, Chirixalus eiffingeri (Anura : Rhacophoridae)
Autore:
Kam, YC; Yen, CF; Chen, HC; Lin, PY; Wang, JR; Chiu, CT;
Indirizzi:
Natl Changhua Univ Educ, Dept Biol, Changhua 50058, Taiwan Natl Changhua Univ Educ Changhua Taiwan 50058 ol, Changhua 50058, Taiwan Providence Univ, Gen Educ Ctr, Div Humanity, Taichung, Taiwan Providence Univ Taichung Taiwan duc Ctr, Div Humanity, Taichung, Taiwan
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
fascicolo: 2-3, volume: 129, anno: 2001,
pagine: 519 - 525
SICI:
1095-6433(200106)129:2-3<519:TTEOAP>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
MATERNAL BROOD CARE; TEMPERATURE SELECTION; REPRODUCTION; OXYGEN;
Keywords:
Anura; arboreal; maternal brood care; metabolic compensation; oophagous tadpoles; phytotelmata; temperature effects; trophic eggs;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Kam, YC Natl Changhua Univ Educ, Dept Biol, Changhua 50058, Taiwan Natl Changhua Univ Educ Changhua Taiwan 50058 ghua 50058, Taiwan
Citazione:
Y.C. Kam et al., "The thermal environment of arboreal pools and its effects on the metabolism of the arboreal, oophagous tadpoles of a Taiwanese tree frog, Chirixalus eiffingeri (Anura : Rhacophoridae)", COMP BIOC A, 129(2-3), 2001, pp. 519-525

Abstract

We have studied seasonal and diurnal fluctuations of water temperature in bamboo stumps and the effect of temperature on the energy metabolism of arboreal, oophagous tadpoles of Chirixalus eiffingeri. We collected tadpoles (Gosner stage 28-29) in February and August from Chitou, Taiwan and acclimated them to 12 and 22 degreesC. Using a closed system, we measured tadpole oxygen consumption ((V)over dot O-2) at 12, 17 and 22 degreesC. The water temperature was lowest in February (11-13 degreesC), increased rapidly duringMarch and April and was highest from May to August (20-24 degreesC). Diel fluctuations in the temperature of the pools of water in bamboo stumps mirrored fluctuations in air temperature. Tadpoles collected in February and August exhibited metabolic compensation in that tadpoles acclimated at 12 degreesC had significantly higher lie, than those acclimated at 22 degreesC. There are at least two possible explanations for the presence of metabolic compensation in C. eiffingeri tadpoles. Firstly, the larval period of C. eiffingeri ranges from 40 to 78 days, a tadpole could experience relatively large fluctuations in body temperature (up to 10 degreesC) during the development. As a result, C. eiffingeri tadpoles most likely evolved metabolic compensation to maintain activity levels under different thermal environments. Secondly, because arboreal pools are small, thermally unstratified, aquatic microhabitats, tadpoles are unable to behaviorally select preferred temperatures. As a result, metabolic compensation allows tadpoles to regulate their physiological functions. (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 05/04/20 alle ore 23:05:46