gonopore


Also found in: Dictionary, Wikipedia.

gonopore

(gŏn′ə-pôr′)
n.
A reproductive aperture or pore, especially of certain insects and worms.
References in periodicals archive ?
Maturity of female crabs can be inferred from the presence of eggs, gonopore condition, or ovary development, but maturity of male crabs is difficult to determine.
15) irregularly rounded apically; endosoma simple with distinct secondary gonopore and a single, straight, spiculum, only slightly curving at the apex.
The differing, species-specific female anal spots appear to influence male mating behavior by signaling the location of the gonopore to the male, sometimes indicating the reproductive status of the female, and distinguishing fish of their own species from fish of other species to reduce costly cross-breeding, which can result in fish with reduced fitness," Langerhans described.
Mature male sailfin mollies have a modified anal fin called a gonopodium, which they insert into the gonopore of a female during a mating attempt.
The mouth and gonopore are surrounded by unpigmented regions and are located ventrally behind the mid body region.
Aedeagal shaft flat in profile, apical 2/3 curved and gradually narrowing, gonopore subapical on the left side, ventro-basal protrusion of aedeagus much longer than shaft, broad at base, apical half slightly curved dorsad, in ventral aspect apex sinuate and strongly narrowing, slender process adjacent to shaft on left side shorter than shaft (Figs.
DIAGNOSIS: Pinophylus is distinguished from other conifer inhabiting genera of Phylini by the distinctive sexual dimorphism, with the costal margins of the hemelytra elongate and parallel-sided in the male and shorter and subovoid in the female; the brownish black dorsum with inconspicuous dark simple setae; the pretarsus with the base of the claw expanded and the pulvillus small; and the endosoma composed of two straps with a subapical secondary gonopore.
Endophallic layer: the endophallus bears small anterior apodemes, laterally flattened and divergent; the gonopore process is slender and digitiform with a T-shaped tip.
Crown and pronotum light brown with black areas; claval veins fused for considerable distance; posterior margin of female abdominal sternite VII with broad median lobe, abdominal sternite VIII of female with two pairs of conspicuous lateral plates sclerotized; shaft of aedeagus robust with gonopore conspicuously visible, aedeagus with pair of ventral processes, processes of pygofer not attaining pygofer apex (Young, 1968; Azevedo & Carvalho, 2006).
Spermatopositor short, with two movable fingers in gonopore complex, long dorsal microtrichia with bases arranged in a "V" and not fused, and short apical and ventral microtrichia.
The gonopore is located on the right side in the middle of the body, while the nephroproct is situated more posteriorly.