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[Article] Trabalon: Agonistic behaviour and lipid state in Brachypelma albopilosum

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  • [Article] Trabalon: Agonistic behaviour and lipid state in Brachypelma albopilosum

    Trabalon, M. Agonistic interactions, cuticular and hemolymphatic lipid variations during the foraging period in spider females Brachypelma albopilosa [sic] (Theraphosidae). Journal of Insect Physiology, In Press, Accepted Manuscript, Available online 19 February 2011. doi:10.1016/j.jinsphys.2011.02.011

    Abstract. Agonistic behaviour and lipid state were examined in tarantula Brachypelma albopilosa [sic] females during the foraging period. Modulation of the agonistic behaviour of females was not connected to their body size. Results show that the agonistic pattern of females differed significantly from the predation pattern at the behavioural and lipid levels. Aggressive-foraging females had low predation behaviour. Quantitative lipid changes were observed in relation to agonistic behaviour and predation. The total lipid index was studied by colorimetric methods, and lipid compounds were analyzed by gas chromatography-mass spectrometry in cuticle and hemolymph of females. The lipid components were free fatty acids, methyl esters, cholesterol, and long-chain aliphatic hydrocarbons. Methyl esters were much more abundant in cuticular lipids; unsaturated free fatty acids (linoleic and oleic acids) and methyl esters (methyl linoleate and methyl stearate) predominated in the hemolymph. Spider aggression was positively correlated with lipid concentration (cholesterol, fatty acids, methyl esters and hydrocarbons) in the hemolymph and the levels of cuticular fatty acids. Lipid levels are hypothesized to have evolved as a regulatory factor of predation and agonistic behaviours in tarantula females.

    -Zoltan
    Spider Myths | Curious Taxonomy | The World Spider Catalog - Theraphosidae

    "We are all taxonomists." -Judith Winston
    "The laws of biology are written in the language of diversity." -Edward Osborne Wilson
    "Principle of Priority - the oldest fool is always right!" -H. Segers & Y. Samyn

  • #2
    Thanks for the notification. I emailed the author to see if there was still time to correct the species name. Why biochemists and physiologists often get such things wrong amazes me... [late amendment:, note to self, this name writing problem seems to happen to phylogeneticists too]
    Last edited by stuart longhorn; 11-03-11, 12:40 AM.
    British Tarantula Society
    My Lovely spiders:

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