genital atrium

genital atrium

[′jen·ət·əl ′ā·trē·əm]
(zoology)
A common chamber receiving openings of male, female, and accessory organs.
References in periodicals archive ?
nov., the same number of accessory atrial sacs (9) and their arrangement in the wall of the genital atrium. However, the new species can be distinguished from L (M.) hunteri by the presence of sclerotized parts in its accessory atrial sacs, a pair of lateral auricular papillae on the oral sucker and female pouch.
The new species differs from other species of this group mainly in the number of atrial accessory sac (9 with sclerotized structures) and its arrangement in the wall of the genital atrium. The adults worms were recovered experimentally from chicken, duck, rat and mice after infecting them with metacercariae from the crab Uca rapax.
Both vagina and free oviduct distinctly longer than very short genital atrium. Proximal end of vagina or entire vagina enlarged to form vaginal bulb joined by spermathecal duct.
Distally, fourth region passes into the extremely small genital atrium, extending through body wall to open via genital aperture.
The right pedal retractor passes through the genital atrium, attaches at its midpoint to the apex of the penis and continues forward to the foot.
12): The genital atrium is short, about 0.6mm long.
Ovary consists of 7-8 lobes immediately anterior to testes, uterus coiled, small, between ovary and ventral sucker extending anteriorly to the level of genital atrium. Eggs are numerous, oval in shape.
-- Body divided into flat forebody, containing the suckers and bulbous tribocytic organ, and a cylindrical hindbody which contains the organs of reproduction; testes tandem, in middle of hindbody; cirrus sac absent; seminal vesicle free in parenchyma; thick-walled paraprostate organ posterior to testes; genital atrium present; genital pore dorsal, near posterior end of body; hermaphroditic canal present; vitelline follicles in both fore- and hindbody or confined to forebody; parasitic in intestine of reptiles, especially alligators.
Uterus pre-ovarian, uterine coils fills the space between ovary and ventral sucker, metaterm tubular, slightly narrow, opens into genital atrium.
Uterus pre-ovarian, intercaecal, uterine coils fills the space between ovary and ventral sucker, metaterm tubular, wide and opens into genital atrium.
Genital atrium situated on left side of acetabulum, surrounded entirely by male genital papilla, 21-24 long by 16-26 wide.