spermatheca


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Related to spermatheca: Aedeagus

spermatheca

[¦spər·mə′thē·kə]
(zoology)
A sac in the female for receiving and storing sperm until fertilization; found in many invertebrates and certain vertebrates. Also known as seminal receptacle.
References in periodicals archive ?
In Dermaptera, the spermatheca has been described as an unpaired organ, spherical or tubular in shape, connected to a long, sinuous duct, which may be branched in some species (Hudson 1973; Mariani 1994; Klass 2003; Kamimura 2007; Kamimura & Lee 2014).
The control of the spermatozoa release from the spermatheca during oocytes fecundation is carried out by the muscular duct (King et al., 2011; Chapman, 2013), which can also show morphological variation according to species (Pendergrast, 1957; Kocorek and Danielczok-Demska, 2002).
After each mating, the numbers of sperms in the male's sperm reservoir and in the female's spermatheca are updated.
a) Dorsal view of right spermatheca from segment 9 (scale 0.5 mm); b) Distal part of penial seta from segment 17 (scale 30 [micro]m).
The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications.
A long copulatory duct is connected to the spermatheca. It is broad proximally.
where (Q, D) is the probability of the drone to be added to the spermatheca of the Q queen (probability of the drone and queen to mate) and [DELTA](f) is the absolute difference between D's fitness and Q's fitness.
A queen bee is able to produce these fertile eggs year-round because she is born with an ovary full of eggs and another pouch called a spermatheca. Soon after her birth, a queen mates with as many as 18 drones from other hives and the spermatheca becomes filled with a lifetime supply of sperm.
During copulation the flagellum is threaded up the female's long and convoluted spermathecal duct and into the ampulla and occasionally also into the spermatheca. The male deposits a spermatophore in the female's bursa, and sperm migrate along the flagellum up the spermathecal duct to the spermatheca.
In interspecific pairing, often it has been noticed that transfer of spermatheca does not occur.
Then the abdomen was also boiled in 10 % KOH for 10 min and spermatheca was exposed by opening the terga as described by Memon and Ahmad (2002a) and Memon et al.