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Inter and intraspecific variation in female remating propensity in the cactophilic sibling species Drosophila buzzatii and D. koepferae
(Elsevier, 2013-05)
Post-mating sexual selection by means of sperm competition or cryptic female choice occurs in species in which females remate before exhausting sperm supplied by previous mates. Thus, sperm competition is expected to be ...
Differences in sperm morphology in foam-nesting leptodactyline frogs (Anura, Leptodactylidae)
(Wiley-Blackwell, 2017-01-01)
Sperm morphology is diverse among vertebrates and is influenced by the reproductive strategies adopted by species. In anurans, sperm morphology is associated with reproductive modes and mating systems. Here, we describe ...
Comparative sperm ultrastructure of two tegu lizards (genus Salvator) and its relation to sperm competition
(Elsevier Gmbh, 2017-03)
The knowledge of sperm ultrastructure of Squamata provides informative traits for phylogenetic analyses. Furthermore, several sperm ultrastructure traits are important for sperm motility and longevity. Here, we provided a ...
Female mediation of competitive fertilization success in Drosophila melanogaster
(National Academy Of Sciences, 2013-06)
How females store and use sperm after remating can generate postcopulatory sexual selection on male ejaculate traits. Variation in ejaculate performance traits generally is thought to be intrinsic to males but is likely ...
Expression of Ciona intestinalis AOX causes male reproductive defects in Drosophila melanogaster
(Biomed Central Ltd, 2017-07-03)
Background: Mitochondrial alternative respiratory-chain enzymes are phylogenetically widespread, and buffer stresses affecting oxidative phosphorylation in species that possess them. However, they have been lost in the ...
A hypothesis about the origin of sperm storage in the Eubrachyura, the effects of seminal receptacle structure on mating strategies and the evolution of crab diversity: How did a race to be first become a race to be last?
(Elsevier Gmbh, 2011-10)
The origins and evolution of sperm storage in Brachyura are enigmatic: sperm is either stored in seminal receptacles, accessible via the vulvae on the sixth thoracic sternite, or in spermathecae at the border between the ...
Sperm morphology of the neotropical harvestman Iporangaia pustulosa (Arachnida : Opiliones): Comparative morphology and functional aspects
(Elsevier Sci LtdOxfordInglaterra, 2007)
Sperm allocation and cost of mating in a tropical tephritid fruit fly.
(Journal insect physiology, 2006)
Comparative morphology of the seminal receptacles of Ocypode quadrata (Fabricius, 1787) (Brachyura, Ocypodoidea)
(Magnolia Press, 2009-05-13)
The seminal receptacles of the Eubrachyura are an ecto-mesodermic differentiation of the genital ducts where the spermatophores are stored and fertilization takes place. The position in which the oviduct is connected to ...