Morphology, function and evolution of male genitalia (hemispermatophores and spermatophores) in the Superfamily Scorpionoidea Latreille, 1802 (Chelicerata, Scorpiones)

Diplôme Master Morphology, function and evolution of male genitalia (hemispermatophores and spermatophores) in the Superfamily Scorpionoidea Latreille, 1802 (Chelicerata, Scorpiones) eng 2014 author Cauwet Lucie 701144 director Monod Lionel Alexandre 95008 Insemination in scorpions occurs via the use of a sclerotized structure, deposited on the substate by the male, called spermatophore. It is composed of two halves that are mirror images of each other, the hemispermatophores. Spermatophores and hemispermatophores come in a great variety of shapes and structures and provide informative, reliable characters for systematics, at diverse taxonomic levels. However, because they are not easily obtained and because most previous authors did not compare them across the different families, there are thus far no satisfying hypothesis of homology and therefore no consensus nomenclature for those structures in the order Scorpiones. In this study, I propose to review the extant literature on scorpions spermatophores and hemispermatophores. I also illustrate a wide array of scorpion taxa for those structures, with emphasis on the superfamily Scorpionoidea, in which they happen to be the more complex. I subsequently explore structural homologies amongst the order and propose a revised nomenclature for scorpions spermatophores and hemispermatophores. Additionally, I propose a maximum parsimony reconstruction of their evolution by mapping characters on the extant phylogeny, which allowed me to retrieve synapomorphies for taxa of different phylogenetic levels. Finally, because matings had to be processed to collect spermatophores, courtship behaviours are described for the first time in Pandinus cavimanus and Heterometrus mysorensis (Scorpionidae). Spermatophores Hemispermatophores Scorpions Male Genitalia Scorpionoidea Scorpiones Morphology Evolution Dewey 590 Biodiversité et Systématique 44 Département de génétique et évolution 162 false bcca6cbd-05d2-4e13-8f5d-4d3a63d3b614 Master thesis Restricted Master2.pdf 18681254 application/pdf restrictedAccess Faculté des sciences / Section de biologie / Département de génétique et évolution

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Morphology, function and evolution of male genitalia (hemispermatophores and spermatophores) in the Superfamily Scorpionoidea Latreille, 1802 (Chelicerata, Scorpiones)				2014	551	13

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Cauwet, Lucie