Agelenids of the World

Systematics and Taxonomy of Agelenidae, a Worldwide distributed Spider Family

Changes in cuticular compounds composition during the gregarious period and after dispersal of the young in Tegenaria atrica (Araneae, Agelenidae)

Publication Type:Journal Article
Year of Publication:1996
Authors:M. Trabalon, Bagneres, A. G., Hartmann, N., Vallet, A. M.
Journal:Insect Biochemistry and Molecular Biology
Date Published:1996
ISBN Number:0965-1748
Keywords:[Cuticle / / ] [Chemical signals / / ] [Aggregating behaviour / /, Behaviour, Biochemistry, Changes during gregarious period & after dispersal of young], changes in synthesis & release of cuticular compounds]., Communication, compounds] [Distribution within habitat / / Dispersal of young &, Ecology, Gregarious period & changes in synthesis & release of cuticular, Integument, release, Social behaviour, Tegenaria atrica (Araneae)., Tegenaria atrica [Biochemistry / / Cuticular compound synthesis &

Qualitative and quantitative changes in synthesis/release of the cuticular products were observed in Tegenaria atrica adult females and their young. In this spider species, 75 different compounds were detected by GC in the female and 36-41 in the young. Then these compounds were identified by GC-MS as mainly acids, methylesters, n-alkanes and monomethylalkanes containing 17-39 carbon atoms. The transition from gregarious to solitary life is accompanied by changes in agonistic behavior and in the composition of cuticular compounds. During the gregarious period, very few qualitative changes were observed in the level of synthesis/release of cuticular products of the young. After dispersal of the young, one n-alkane (n-heneicosane) and two monomethylalkanes (3-methylpentacosane and 14 -+ 12 -+ 10-methyltriacontane) appeared, when in three other compounds proportional changes were observed. The adult females had many more compounds, one part being the same as the young with different proportions, another part being new compounds, essentially hydrocarbons.

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