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Titolo:
SURVIVAL AND GROWTH IN GROUPS OF A SUBSOCIAL SPIDER (STEGODYPHUS-LINEATUS)
Autore:
SCHNEIDER JM;
Indirizzi:
MAX PLANCK INST VERHALTENSPHYSIOL D-82319 STARNBERG GERMANY
Titolo Testata:
Insectes sociaux
fascicolo: 3, volume: 42, anno: 1995,
pagine: 237 - 248
SICI:
0020-1812(1995)42:3<237:SAGIGO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
WEB-BUILDING SPIDERS; SOCIAL SPIDER; PREY AVAILABILITY; COELOTES-TERRESTRIS; ARANEAE; EVOLUTION; BEHAVIOR; MIMOSARUM; SIZE;
Keywords:
SPIDERS; STEGODYPHUS; COMPETITION; TOLERANCE; SOCIALITY; PREADAPTATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
J.M. Schneider, "SURVIVAL AND GROWTH IN GROUPS OF A SUBSOCIAL SPIDER (STEGODYPHUS-LINEATUS)", Insectes sociaux, 42(3), 1995, pp. 237-248

Abstract

In spiders, known as potentially cannibalistic, mutual tolerance is one important requirement for group life. Using the subsocial spider Stegodyphus lineatus which possibly resembles the ancestors of the social species, the effects of competition were investigated in the laboratory. When dispersal was prevented, spiderlings were capable of living in groups. The intensity of competition for food among spiders in groups was varied experimentally by varying group size or the relative size differences of individuals. Body mass and mortality were compared inthe different experiments. Prey availability, the size of the spidersand initial body size differences among group members all influenced the survival probability and growth of the spiders. Spiders of equal size tolerated each other with a higher probability than spiders of different sizes. Feeding in groups was always disadvantagous even for thelargest spiders.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 18:28:21