Complexity, adaptations and variations in the secondary insemination system of female Dermanyssina mites Acari: Anactinothrichida: Gamasida: the case of Afrocypholaelaps africanaReport as inadecuate




Complexity, adaptations and variations in the secondary insemination system of female Dermanyssina mites Acari: Anactinothrichida: Gamasida: the case of Afrocypholaelaps africana - Download this document for free, or read online. Document in PDF available to download.

Experimental and Applied Acarology

pp 1–13

First Online: 27 July 2017Received: 18 May 2017Accepted: 21 July 2017

Abstract

Gamasine mites, mainly of the taxon Dermanyssina, possess a secondarily evolved insemination system sperm access system, of which there are two, generally recognized, structurally different types, the laelapid- and the phytoseiid-type. The ultrastructure of the female sperm access system in Afrocypholaelaps africana is described. It consists of paired insemination pores, opening between the bases of legs three and four, and paired cuticle-lined tubules that converge into a large, sack-like spermatheca, remarkably cuticle-lined as well. The entire spermatheca and part of the tubules are embedded in a peculiar syncytial tissue where numerous sperm cells are present. The general organization of this insemination system is of the laelapid-type. However, it presents striking structural differences, compared with the systems described in Varroa destructor and Hattena cometis, the other gamasine mites having a laelapid-type system studied ultrastructurally until now. The functional morphology, complexity and variations of the sperm access system in Dermanyssina are discussed and correlated with the evolutionary biology of the group.

KeywordsSperm transfer Podospermy Sperm access system Spermatheca Female cryptic choice Sacculus foemineus G. Alberti—Deceased

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Author: A. Di Palma - O. D. Seeman - G. Alberti

Source: https://link.springer.com/







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