spermatheca

(redirected from spermathecal)
Also found in: Dictionary, Encyclopedia.

spermatheca

(spûr′mə-thē′kə)
n. pl. spermathe·cae (-sē)
A receptacle in the reproductive tract of many female or hermaphrodite invertebrates and certain female vertebrates, in which spermatozoa are received and stored until needed to fertilize the ova.

sper′ma·the′cal adj.

spermatheca

a sac for the storage of sperm, a ‘seminal receptacle’ as occurs in the female reproductive tract of many lower animals, such as insects and PLATYHELMINTHS.

spermatheca

accessory organ opening into the common oviduct in female insects; stores spermatozoa delivered by the male during copulation; the sperm may remain viable for the life of the female.
Mentioned in ?
References in periodicals archive ?
7 Blade of paramere without apical spine with apex narrowly roundish, inner margin distinctly wavy with prominent depression on upper outer margin; 1stgonocoxae on posterior margin distinctly depressed at anterior angle; spermathecal bulb with two finger-like processes .
Abbreviations: CDS, common duct of the spermatheca (copulatory canal); SPDU, spermathecal duct (bursa duct); SP, spermatheca (bursa copulatrix); TOT, total length of CDS 4- SPDU + SP; SPD, spermathecal diverticulum (bursa tract diverticulum); VA, vagina; FO, free oviduct; EPC, epiphallic cecum; SWEP, single-walled section of epiphallus (proximal region); DWEP.
Female: cibarium with about 12 horizontal small triangular teeth, one row of about 6 large vertical teeth and other row below of about four less differentiated teeth; arch complete but less visible at middle; spermathecae spherical smooth, without differentiated wide neck at the union with the individual spermathecal duct; individual spermathecal ducts as long as the furca stem and nearly inexistent common duct (Ibanez-Bernal 2002).
Head nearly parallel-sided, almost rectangular,apex broad anterior part of lateral margins of head with 4-6 irregular-shaped but distinct dentine; lateral margins of pronotum with eleven unequal long acute spines; margins of connexivum with comb-like thin spines of equal length; dorsoposterior cavity of male pygophore with small conical median projection, ventroposterior cavity shallow with broad roundish median excavation and triangular lobes on sides; spermathecal bulb with three processes, one short, highly sclerotized, a second a little longer, semi-sclerotized and a little bent at apex, and the third thick, very long, reaching middle of first flange M.
Spermathecal chaetae trivial (nib-shaped, distal portion with parallel edges, not twisted).
Genitalia: Dorsal labiate plate without sclerotized rings, with two distinct sclerotized bands, spermathecal gland placed near posterior margin (Fig.
The spermathecal stalk has a globular lateral lobe and an oblong and often bilobed terminal chamber (Fig.
New Fabriciola species (Polychaeta, Sabellidae, Fabriciinae) from eastern Atlantic, with a description of sperm and spermathecal structure.
All species seem to have a dorsal tube on the bursa copulatrix which is the origin of the spermathecal duct, of a much more rigid consistency than the membranous and amorphous and generally much-pleated bursa, differing from what we have seen in other species (Bentos-Pereira 1998, BentosPereira & Rowell 1999).
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.
Spermathecal contents were examined under a compound microscope at 400x magnification.
Epigyne with globular, posteriolateral, diverging spermathecal sacs; spermathecal ducts coil inward; epigynal orifices thin, ovoid, at posterior margin; epigynal plate narrow and projected anteriorly, narrow and scape like posteriorly.