copulatory organ


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copulatory organ

[′käp·yə·lə‚tȯr·ē ‚ȯr·gən]
(anatomy)
An organ employed by certain male animals for insemination.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The female copulatory organs in Hemicloea originate from two longitudinal epigynal folds (Fig.
Inhibition of aromatase activity thus increases levels of testosterone which induces imposex, with the development of male copulatory organs. Development of the imposex phenomenon in P.
Testis bilobate, 117-188 (141) long, 94-118 (106) wide; deferent duct long, not overlooped intestinal ceca; seminal vesicle 117-141 (133) long, 61-70 (67) wide, prostatic and accessory reservoirs well developed; sclerotized copulatory organ (Fig.
This assumes that the male copulatory organ, which makes up to 5% of the body dry mass (Doums and Jarne 1996), is costly in euphallic snails, and that aphallic snails can reallocate the energy they do not invest in the male function to female function.
According to these authors, the main characteristics of Pseudempleurosoma are: two pairs of dissimilar anchors, dorsal anchor large with unpaired median connecting bar, and ventral anchor smaller with two pairs of connecting bars associated with each anchor; caeca with numerous lateral diverticula, united posteriorly; copulatory organ tubular, slender, twisted or not; accessory piece present; genital pore median and ovary pretesticular (SANTOS et al.
The creature, an ostracode, lived 425million years ago and was buried under the ash from a volcano, which preserved details of all its soft parts, including a "stout copulatory organ".