Copulatory organs rapidly evolve and are subject to complex selective pressures affecting mating success. One feature of copulatory organs that is subject to such selective pressures is size. Benefits of longer organs may include greater signal effectiveness in courtship and longer ‘reach’ when attempting copulations with evasive females.

Copulatory organ breakage, in which a portion of the male's genitalia breaks off during copulation is relatively common in spiders (Wiehle 1967; Breene & Sweet

Its functions are to provide an outlet for urine and seminal fluid, as it transmits the urethra. Define Copulatory organ. Copulatory organ synonyms, Copulatory organ pronunciation, Copulatory organ translation, English dictionary definition of Copulatory organ. Noun 1. sex organ - any organ involved in sexual reproduction reproductive organ organ - a fully differentiated structural and functional unit in an animal In general zoology, given the great variety in organs, physiologies, and behaviors involved in copulation, male genitalia are more strictly defined as "all male structures that are inserted in the female or that hold her near her gonopore during sperm transfer"; female genitalia are defined as "those parts of the female reproductive tract that make direct contact with male genitalia or male products (sperm, spermatophores) during or immediately after copulation".

Copulatory organ

Copulatory organs of eight species of the monophyletic taxon Childia were investigated in detail, using phalloidin fluorescence method and confocal microscopy. Childia species were shown to have one, two or several tubular stylets, conical to cylindrical in shape, composed of few to numerous needles. Sexual intercourse (or coitus or copulation) is sexual activity typically involving the insertion and thrusting of the penis into the vagina for sexual pleasure, reproduction, or both. This is also known as vaginal intercourse or vaginal sex. 1. copulatory organ/penetrating device 2. site of sperm/androgen production 3.

scute. Abd-B The most striking feature of Tailed Frogs is its namesake or "tail", which is actually the external copulatory organ (an everted extension of the cloaca), used A similar sequence results in the enlargement of the female reproductive organs, development of eggs in the ovaries, formation of the brood patch, and so on. dict.cc English-German Dictionary: Translation for copulatory organ.

copulatory organ. copulatory organ. Third pair of trunk limbs, bearing the gonopores, in ostracodes [Brusca and Brusca, 2002]. Crustacea glossary.

cop·u·lat·ed , cop·u·lat·ing , cop·u·lates 1. To engage in sexual intercourse in which the penis is inserted into the vagina. The midventral copulatory organ is in all species composed of an outer muscular penis sheath and an inner penis cone. Neurites encircle the organ equatorially, either as a ring-shaped circumpenial fibre mass or as dorsal and ventral commissures, which are connected to the ventrolateral nerve cords.

Spiders have evolved a unique male copulatory organ, the pedipalp bulb. The morphology of the bulb is species specific and plays an important role in species recognition and prezygotic reproductive

The use of pedipalps as intromittent organs in males is a synapomorphy for the Araneae [16]. At the tip of the male pedipalp, the so-called palpal organ (syns. The palpal organ is ontogenetically derived from tarsal claws; however, no nerves, sensory organs or muscles have been detected in the palpal bulb so far, suggesting that the spider male copulatory organ is numb and sensorily blind. Here, we document the presence of neurons and a nerve inside the male palpal organ of a spider for the first time.

intr.v. cop·u·lat·ed , cop·u·lat·ing , cop·u·lates 1. To engage in sexual intercourse in which the penis is inserted into the vagina.
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If populations of the same species would, for some reason, evolve different-sized copulatory organs, these populations may subsequently find it hard to interbreed Define copulatory. copulatory synonyms, copulatory pronunciation, copulatory translation, English dictionary definition of copulatory.

Define Copulatory organ. Copulatory organ synonyms, Copulatory organ pronunciation, Copulatory organ translation, English dictionary definition of Copulatory organ. Noun 1.
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Sep 30, 2008 Indiana University biologist Armin Moczek explains his findings about the inverse relationship between horn and copulatory organ size in male

Various types of copulatory organs are found among the vertebrates, whereas cloacal apposition occurs in most other vertebrates which lack these structures. The corpus uteri are located between its fundus and the cervix (uterine neck).

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Sep 30, 2008 Indiana University biologist Armin Moczek explains his findings about the inverse relationship between horn and copulatory organ size in male

At the tip of the male pedipalp, the so-called palpal organ (syns. The palpal organ is ontogenetically derived from tarsal claws; however, no nerves, sensory organs or muscles have been detected in the palpal bulb so far, suggesting that the spider male copulatory organ is numb and sensorily blind. Here, we document the presence of neurons and a nerve inside the male palpal organ of a spider for the first time. 2015-04-14 · The earliest known vertebrate copulatory organs are claspers, paired penis-like structures that are associated with evolution of internal fertilization and viviparity in Devonian placoderms. Today, Copulatory organs of eight species of the monophyletic taxon Childia were investigated in detail, using phalloidin fluorescence method and confocal microscopy. Childia species were shown to have one, two or several tubular stylets, conical to cylindrical in shape, composed of few to numerous needles.