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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Resting metabolic rates of two orbweb spiders: A first approach to evolutionary success of ecribellate spiders

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Autor(es):
Kawamoto, Tatiana Hideko [1, 2, 3] ; Machado, Fabio de A. [4] ; Kaneto, Gustavo E. [1] ; Japyassu, Hilton F. [5]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Lab Ecofisiol & Fisiol Evolut, Dept Fisiol, Inst Biociencias, BR-05508900 Sao Paulo - Brazil
[2] Inst Butantan, Lab Artropodes, BR-05503000 Sao Paulo - Brazil
[3] Univ Sao Paulo, Programa Posgrad Psicol Expt, Inst Psicol, BR-05508900 Sao Paulo - Brazil
[4] Univ Sao Paulo, Lab Herpetol Morfometria, Museu Zool, BR-04263000 Sao Paulo - Brazil
[5] Inst Biol UFBA, NuEVo Nucleo Etol & Evolucao, BR-40170115 Salvador, BA - Brazil
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF INSECT PHYSIOLOGY; v. 57, n. 3, p. 427-432, MAR 2011.
Citações Web of Science: 6
Resumo

Spiders are considered conservative with regard to their resting metabolic rate, presenting the same allometric relation with body mass as the majority of land-arthropods. Nevertheless, web-building is thought to have a great impact on the energetic metabolism, and any modification that affects this complex behavior is expected to have an impact over the daily energetic budget. We analyzed the possibility of the presence of the cribellum having an effect on the allometric relation between resting metabolic rate and body mass for an ecribellate species (Zosis geniculata) and a cribellate one (Metazygia rogenhoferi), and employed a model selection approach to test if these species had the same allometric relationship as other land-arthropods. Our results show that M. rogenhoferi has a higher resting metabolic rate, while Z. geniculata fitted the allometric prediction for land arthropods. This indicates that the absence of the cribellum is associated with a higher resting metabolic rate, thus explaining the higher promptness to activity found for the ecribellate species. If our result proves to be a general rule among spiders, the radiation of Araneoidea could be connected to a more energy-consuming life style. Thus, we briefly outline an alternative model of diversification of Araneoidea that accounts for this possibility. (C) 2011 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 07/52144-5 - Análise da variação longitudinal do esqueleto axial em serpentes (Squamata) empregando ferramentas de morfometria geométrica
Beneficiário:Fábio de Andrade Machado
Linha de fomento: Bolsas no Brasil - Mestrado