| Full text | |
| Author(s): |
Kawamoto, Tatiana Hideko
[1, 2, 3]
;
Machado, Fabio de A.
[4]
;
Kaneto, Gustavo E.
[1]
;
Japyassu, Hilton F.
[5]
Total Authors: 4
|
| Affiliation: | [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
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF INSECT PHYSIOLOGY; v. 57, n. 3, p. 427-432, MAR 2011. |
| Web of Science Citations: | 5 |
| Abstract | |
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) | |
| FAPESP's process: | 07/52144-5 - Analysis of the longitudinal variation of the axial skeleton in serpents (Squamata) using tools of geometric mophometry |
| Grantee: | Fábio de Andrade Machado |
| Support Opportunities: | Scholarships in Brazil - Master |