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Titolo:
PEDOGENETIC SOCIOGENESIS VIA THE SIBLING-ROUTE AND SOME CONSEQUENCES FOR STEGODYPHUS SPIDERS
Autore:
WICKLER W; SEIBT U;
Indirizzi:
MAX PLANCK INST VERHALTENSPHYSIOL D-82319 SEEWIESEN GERMANY
Titolo Testata:
Ethology
fascicolo: 1, volume: 95, anno: 1993,
pagine: 1 - 18
SICI:
0179-1613(1993)95:1<1:PSVTSA>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANELOSIMUS-EXIMIUS ARANEAE; ACHAEARANEA-WAU THERIDIIDAE; ORB-WEAVING SPIDERS; WEB-BUILDING SPIDER; SOCIAL SPIDER; SEX-RATIOS; FORAGING STRATEGIES; AGELENA-CONSOCIATA; PREY CAPTURE; COLONY SIZE;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
152
Recensione:
Indirizzi per estratti:
Citazione:
W. Wickler e U. Seibt, "PEDOGENETIC SOCIOGENESIS VIA THE SIBLING-ROUTE AND SOME CONSEQUENCES FOR STEGODYPHUS SPIDERS", Ethology, 95(1), 1993, pp. 1-18

Abstract

Cooperative social life originated independently at least 3 times in the eresid spider genus Stegodyphus. The ultimate and proximate factors for sociogenesis have been analyzed in two African social species, S. dumicola and S. mimosarum. 1. More profitable hunting as the ultimate benefit of sociality can explain group sizes up to 30 individuals. Most groups are much larger, reducing average female fecundity. They benefit mainly from the shelter against predators provided by the compact silk nest as a heritable resource. 2. Sociogenesis is not based on extended maternal care but on interattraction and tolerance of juvenilespiders, retained throughout life in females. Their neotenic sociality came to overlap with advanced (pedomorphic) sexual maturity. This evolutionary pathway towards sociality is called the ''sibling-route''.3. Negative side effects, accumulating with group size, may make sociality in Stegodyphus evolutionarily unstable.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 17:43:08