Pelvic spurs are the externally visible portion of the vestigial remnants of legs found on each side of the cloaca in primitive snakes, such as boas and pythons. The remnants of a pelvis and femur, which have no connection with the spine, simply "float" in the muscle mass. The femur protrudes from the snake's body and is covered by a horny structure, which resembles a spur or claw. Males' spurs are generally longer and more pointed than females', and are used for clasping and tickling during courtship and mating, as well as combat with other males in some species.
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| - Aftersporn (de)
- Pelvic spur (en)
- Esporão pélvico (pt)
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| - As esporas pélvicas são a porção externamente visível dos restos vestigiais de pernas encontradas em cada lado da cloaca em cobras primitivas, tais como boas e jibóias. Os restos de uma pélvis e o fêmur, que não têm conexão com a coluna vertebral, simplesmente "flutuam" na massa muscular. O fêmur se projeta do corpo da serpente e é coberto por um esporão córneo, que se assemelha a um esporão ou garra. As esporas dos machos são geralmente mais longas e mais pontudas do que as das fêmeas, e são usadas para espetar e fazer cócegas durante o namoro e acasalamento, bem como de lutar com outros machos de algumas espécies. (pt)
- Aftersporne oder auch Afterklauen sind die rudimentären Überreste von Hinterextremitäten, die bei einigen Taxa der Schlangen existieren. Dabei handelt es sich um Teile des Beckens, die als Hinweis auf die evolutionäre Abstammung der Schlangen von vierbeinigen Reptilien angesehen werden. Entsprechend sind sie vor allem bei sehr basalen Taxa zu finden, etwa den Blindschlangen, Rollschlangen, Wühlschlangen, Walzenschlangen sowie den Boas und Pythons. Vor allem bei den beiden letzteren Familien ragen die Afterklauen gelegentlich beidseitig des Afters aus dem Körper heraus. (de)
- Pelvic spurs are the externally visible portion of the vestigial remnants of legs found on each side of the cloaca in primitive snakes, such as boas and pythons. The remnants of a pelvis and femur, which have no connection with the spine, simply "float" in the muscle mass. The femur protrudes from the snake's body and is covered by a horny structure, which resembles a spur or claw. Males' spurs are generally longer and more pointed than females', and are used for clasping and tickling during courtship and mating, as well as combat with other males in some species. (en)
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| - Aftersporne oder auch Afterklauen sind die rudimentären Überreste von Hinterextremitäten, die bei einigen Taxa der Schlangen existieren. Dabei handelt es sich um Teile des Beckens, die als Hinweis auf die evolutionäre Abstammung der Schlangen von vierbeinigen Reptilien angesehen werden. Entsprechend sind sie vor allem bei sehr basalen Taxa zu finden, etwa den Blindschlangen, Rollschlangen, Wühlschlangen, Walzenschlangen sowie den Boas und Pythons. Vor allem bei den beiden letzteren Familien ragen die Afterklauen gelegentlich beidseitig des Afters aus dem Körper heraus. Aftersporne dienen bei manchen Arten dazu, den Partner beim Fortpflanzungsakt festzuhalten. (de)
- Pelvic spurs are the externally visible portion of the vestigial remnants of legs found on each side of the cloaca in primitive snakes, such as boas and pythons. The remnants of a pelvis and femur, which have no connection with the spine, simply "float" in the muscle mass. The femur protrudes from the snake's body and is covered by a horny structure, which resembles a spur or claw. Males' spurs are generally longer and more pointed than females', and are used for clasping and tickling during courtship and mating, as well as combat with other males in some species. These spurs represent a sexually dimorphic feature, and for some species, spurs can reliably be used to identify the sex of a snake. (en)
- As esporas pélvicas são a porção externamente visível dos restos vestigiais de pernas encontradas em cada lado da cloaca em cobras primitivas, tais como boas e jibóias. Os restos de uma pélvis e o fêmur, que não têm conexão com a coluna vertebral, simplesmente "flutuam" na massa muscular. O fêmur se projeta do corpo da serpente e é coberto por um esporão córneo, que se assemelha a um esporão ou garra. As esporas dos machos são geralmente mais longas e mais pontudas do que as das fêmeas, e são usadas para espetar e fazer cócegas durante o namoro e acasalamento, bem como de lutar com outros machos de algumas espécies. (pt)
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