Spermatophore


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spermatophore

[spər′mad·ə‚fȯr]
(zoology)
A bundle or packet of sperm produced by certain animals, such as annelids, arthropods, and some vertebrates.

Spermatophore

 

in some animals, a capsule containing male sexual cells, or spermatozoa. Spermatophores serve to transport spermatozoa. They are characteristic of leeches, Pogo-nofora, cephalopods, some gastropods and amphibians, and many crustaceans, arachnids, myriopods, and insects.

A spermatophore’s structure and the way the spermatophore enters a female’s genital system vary. For example, in crustaceans, arachnids, and insects different extremities participate in the transport of spermatophores. In cephalopods the hectocoty-lus, one of the arms, usually transports spermatophores. The male grasps spermatophores with the hectocotylus and transfers them into the female’s mantle cavity. In some Octopoda a hectocotylus filled with spermatophores breaks away from the body of the male and floats to the female, inserting itself into the mantle cavity. Male tritons and salamanders attach spermatophores to objects; the spermatophores are then drawn in by the female’s cloaca.

References in periodicals archive ?
Mating effort function of the spermatophore in the bushcricket Poecilimon veluchianus (Orthoptera.
elegantalis host races mated assortatively This was demonstrated by the number of females from both trials with spermatophore transfer counting both homotypic and heterotypic crosses, suggesting the possibility of chemical and/or mechanical reproductive isolation for this species.
agassizii provided a general description of the fishery (Wehrtmann & Nielsen-Munoz, 2009; Wehrtmann, Arana, Barriga, Gracia, & Pezzuto, 2012) and of its sexual characters, spermatophores and gonad development (Villalobos & Wehrtmann, 2011, 2014), here we report for the first time the SOM and seasonal reproductive patterns of S.
macrurus in Immerk Lake began in mid-winter with the appearance of spermatophores in late January and February and hatching of nauplii in late April and early May.
In the present study, SSH was used for screening the differentially expressed genes in male reproductive-related tissues, including AG and part of spermatophore, from Chinese shrimp F.
London, July 8 ( ANI ): Scientists say male fireflies, which are known for attracting mates with a flash of light, also seduce with a gift that comes in the form of a spermatophore: a package containing sperm and nourishment for the female.
In contrast, Western cultures tend to remove the squid's internal organs so there's no risk of accidentally eating a rogue spermatophore.
Cloacal glands have been implicated in the production of different components of the male spermatophore (Sever and Houck, 1985).
In this species, the fecundity and viability of the eggs from females paired with virgin males, and with males who had several matings in 24 hour intervals was not significantly different, even though the spermatophore transferred in the first copula was significantly larger compared to those later released in additional matings (Knight 2007).
Manual and electrical spermatophore extrusion methods of the pink shrimp Farfantepenaeus paulensis (Decapoda: Penaeidae) wild broodstock
Mate guarding may prevent other males from mating with the female, as these males may dislodge the spermatophore inserted in a previous mating.