caa a22 4500 465788696 CHVBK 20180323112017.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF01049195 doi (NATIONALLICENCE)springer-10.1007/BF01049195 Crespi Bernard Museum of Zoology and Department of Biology, University of Michigan, 48109-1079, Ann Arbor, Michigan aut Subsociality and female reproductive success in a mycophagous thrips: An observational and experimental analysis [Elektronische Daten] [Bernard Crespi] Oviparous females of the haplodiploid, facultatively viviparous thrips Elaphrothrips tuberculatus(Thysanoptera: Phlaeothripidae) guard their eggs against female conspecifics and other egg predators. The intensity of maternal defense increases with clutch size. Field and laboratory observations indicate that cannibalism by females is an important selective pressure favoring maternal care. Experimental removals of guarding females showed that egg guarding substantially increases egg survivorship and that the survivorship of undefended eggs is higher in the absence of nonguarding female conspecifics than in their presence. The fecundity of viviparous females increases with the number of eggs cannibalized. The reproductive success of oviparous females increases with body size and local food density and decreases with local density of breeding females. Social behavior may not have advanced beyond maternal care in Elaphrothrips tuberculatusbecause, relative to Hymenoptera, capabilities for helping relatives are few or nonexistent, and the causes of variation in female reproductive success are not influenced easily by cooperation among females. Plenum Publishing Corporation, 1990 thrips nationallicence Subsociality nationallicence cannibalism nationallicence reproductive success nationallicence Journal of Insect Behavior Kluwer Academic Publishers-Plenum Publishers 3/1(1990-01-01), 61-74 0892-7553 3:1<61 1990 3 10905 https://doi.org/10.1007/BF01049195 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01049195 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Crespi Bernard Museum of Zoology and Department of Biology, University of Michigan, 48109-1079, Ann Arbor, Michigan aut NATIONALLICENCE 773 0- Journal of Insect Behavior Kluwer Academic Publishers-Plenum Publishers 3/1(1990-01-01), 61-74 0892-7553 3:1<61 1990 3 10905 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer