Copulatory organs in the teleost fish that derived their intromittent organs from pelvic fins (e.g., Phallostethidae) or anal fins (e.g., Brosmophycinae, Poeciliidae, Anablepidae) contain bone ( Rosen and Gordon 1953; Meisner 2005); elasmobranch claspers, which are derived from pelvic fins, are supported by cartilage ( Klimley 2013) that is heavily calcified, at least in adult basking, blue
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".
A spermatic furrow runs along the entire length of the organ and transports the semen after ejaculation. FEMALE REPRODUCTIVE SYSTEM. FIGURE 13. The pelvic fins in the male bear long grooved cartilaginous rods which are accessory copulatory organs or claspers. The Vertebrate Skeleton | Sidney H. Reynolds It lodges the copulatory organ, and on its dorsal wall lies the bursa Fabricii, an organ peculiar to birds. 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.
This paper represents the concluding DEVELOPMENT OF THE MALE AND FEMALE COPULATORY ORGANS OF THE cymbium, and the pretarsus by a complex, copulatory palpal organ. (The rudimentary copulatory organ located on the middle and front portion of the cloaca is inaccurately named because the chicken does not use it for copulation copulatory sexual selection via the processes of sperm competition, cryptic female choice male copulatory organ in order to locate and contact the female. Consider a male whose copulatory organ does not inflict a genital wound in most fe- male phenotypes, but does so in females that show unusual movement during The copulatory organ in adult specimens of Archilopsis unipunctata has been This copulatory organ is of the conjuncta-duplex type with eversible cirrus. Translations in context of "copulatory organ" in English-French from Reverso Context: The male copulatory organ usually has spines. Copulation in Opisthogonimus fonsecai Ruiz & Leão, 1942 (Trematoda, Digenea, Plagiorchiidae), parasite The copulatory organ of most digenean is a cirrus. SEX STERILITY AND THE DIMINUTIVE COPULATORY ORGAN IN THE DOMESTIC FOWL.
The use of pedipalps as intromittent organs in males is a synapomorphy for the Araneae [16].
Apr 21, 2021 This variability is magnified later and a few 15-day-old individuals still did not have dorsal haptoral accessory spines or a male copulatory organ.
The copulatory organ is a mass of richly vascularized tissue, with intense pigmentation from the base to the extremity of the penis, which is eversible through the cloaca by the action of erector muscles and blood inflow. Copulatory organs in the teleost fish that derived their intromittent organs from pelvic fins (e.g., Phallostethidae) or anal fins (e.g., Brosmophycinae, Poeciliidae, Anablepidae) contain bone ( Rosen and Gordon 1953; Meisner 2005); elasmobranch claspers, which are derived from pelvic fins, are supported by cartilage ( Klimley 2013) that is heavily calcified, at least in adult basking, blue Correlated Evolution of Two Copulatory Organs via a Single cis-Regulatory Nucleotide Change Curr Biol . 2018 Nov 5;28(21):3450-3457.e13. doi: 10.1016/j.cub.2018.08.047.
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
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.
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Nos livros didáticos de zoologia está escrito claramente que todas as aves têm uma cloaca, isto é, uma extensão da parte posterior do intestino, na qual os
The Cowper's glands secrete a fluid that lubricates the urethra before departure of semen (ejaculation). The penis is the male copulatory organ. Inside it presents
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20 Jan 2020 The vagina receives the male copulatory organ, the penis, during copulation and is the birth canal for the infant during parturition. Mammary
The penis is the copulatory organ of the external male genitalia. Its functions are to provide an outlet for urine and seminal fluid, as it transmits the urethra.
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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
2017-03-01 · No male copulatory organs have been recorded in the infraorders Procarididea (Chace and Manning, 1972) and Stenopodidea , which do not include pelagic species. Correlations between the pelagic habitat and the presence of different types of male copulatory organ (based on Table 1) are as follows: 1. 2019-10-24 · Results: We show that the copulatory organ is innervated in all species investigated.
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An organ utilized by the male animal for insemination, that is, to deposit spermatozoa directly into the female reproductive tract. Various types of copulatory organs are found among the vertebrates, whereas cloacal apposition occurs in most other vertebrates which lack these structures. Amplexus, or false copulation, is peculiar to amphibians.
Copulatory organ synonyms, Copulatory organ pronunciation, Copulatory organ translation, English dictionary definition of Copulatory organ. Noun 1.
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Sexual intercourse in the missionary position depicted by Édouard-Henri Avril (1892) 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.
copulatory organ/penetrating device. 2.