Capybara 2012
DOI: 10.1007/978-1-4614-4000-0_6
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Reproductive Morphology and Physiology of the Male Capybara

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Cited by 6 publications
(13 citation statements)
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“…The small os penis, baculum, or penile bone, common in rodent species (Upham & Patterson, 2015), is located dorsally along the glans penis, similar to descriptions in Cavia porcellus (Stan, 2015), not distinctively visible in the radiographs. As the capybara penis is made up of the corpora spongiosa, it does not provide sufficient rigidity for intravaginal penetration for vaginal penetration, the baculum is thought to be structural support, as described by Paula & Walker (2013), and in comparison, to other species, possessing a shorter baculum (3-4cm in length), the location indicated in the radiograph.…”
Section: Discussionmentioning
confidence: 99%
“…The small os penis, baculum, or penile bone, common in rodent species (Upham & Patterson, 2015), is located dorsally along the glans penis, similar to descriptions in Cavia porcellus (Stan, 2015), not distinctively visible in the radiographs. As the capybara penis is made up of the corpora spongiosa, it does not provide sufficient rigidity for intravaginal penetration for vaginal penetration, the baculum is thought to be structural support, as described by Paula & Walker (2013), and in comparison, to other species, possessing a shorter baculum (3-4cm in length), the location indicated in the radiograph.…”
Section: Discussionmentioning
confidence: 99%
“…In agouti, the internal reproductive system is composed of accessory glands (vesicular glands, prostate, and bulbourethral glands), testis, and epididymis (delimited by adipose tissue, i.e., caput epididymal) that are paired and fully coated by cremaster muscle, allowing a greater range of movement and internalization of the testicle in the abdomen (Paula and Walker, 2012). In addition, the epididymis of Dasyprocta spp.…”
Section: Reproductive Morphophysiological Characteristics Of Male Agoutimentioning
confidence: 99%
“…Furthermore, nearly a third of the adult testicle is comprised of Leydig cells (the part of the testicle that produces testosterone; the other main component is seminiferous tubules, which produce sperm) in capybaras (Paula et al 2007 ) . This is the highest volumetric proportion of Leydig cells so far described for any mammal (Moreira et al 1997a ;França and Russell 1998 ;Paula 1999 ;Paula et al 2007 ) . The approximate count of 126.4 million of these cells per gram of capybara testicle contrasts dramatically with only six million per gram for guinea pigs (Mori et al 1980 ;Zirkin and Ewing 1987 ) .…”
mentioning
confidence: 91%
“…This suggests that there is low sperm competition among capybara males. The testes are not only small (32 g), but remarkably uniform in size (Paula 1999 ;Paula and Walker 2012 ) . Furthermore, nearly a third of the adult testicle is comprised of Leydig cells (the part of the testicle that produces testosterone; the other main component is seminiferous tubules, which produce sperm) in capybaras (Paula et al 2007 ) .…”
mentioning
confidence: 99%
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