intromittent


Also found in: Dictionary, Thesaurus, Medical, Legal.
Related to intromittent: Intromittent organ

intromittent

[¦in·trə¦mit·ənt]
(zoology)
Adapted for intromission; applied to a copulatory organ.
Mentioned in ?
References in periodicals archive ?
The black perch intromittent organs were first described by Agassiz (1853) who documented a smooth patch located on the anal fin with a surrounding sheath with a burrow to house the intromittent organ.
In reptiles, an intromittent or copulatory organ is observed in all living species, with the exception of Sphenodon sp.
Fertilization is internal and the transfer of sperm may occur indirectly through spermatophores in representatives of the suborder Cyphophthalmi, or directly by means of a long and fully intromittent male genitalia in the suborders Eupnoi, Dyspnoi, and Laniatores (Machado & Macias-Ordonez 2007).
Kennedy defined his species groups solely on morphology of the intromittent penes, so it is satisfying that we find similar patterns based on molecular and morphological characters not used by Kennedy.
These include differences in external reproductive anatomy--males possess elongate intromittent organs (claspers) whereas females do not; differences in size--females are often larger than males (7, 8); differences in tooth morphology--many male batoids possess cuspidate teeth to grip their female mates during courtship and copulation (9-11); and differences in skin thickness--some female sharks and rays possess a significantly thicker dermis than males (12, 13).
Scientists don't know when the fish reach their sexual maturity, how often they reproduce, or even how they mate--the male fish has no obvious intromittent organ.
specialized intromittent organs that remove the sperm of rivals; Waage 1979) and mate choice (e.