2013
DOI: 10.1590/s1679-62252013000400009
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Morphological analysis and description of the ovaries of female silky sharks, Carcharhinus falciformis (Müller & Henle, 1839)

Abstract: This work aims to study the female reproductive tract of silky sharks, Carcharhinus falciformis, captured in the South and Equatorial Atlantic Ocean. Samples were collected between January 2008 and March 2010 through oceanic commercial vessels that targeted tuna and swordfish, with a total of 17 females collected. The methodologies followed for analyzing the ovaries of those females included both macroscopic and histological analysis. Macroscopically, it was possible to determine that the ovaries on these shar… Show more

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Cited by 4 publications
(1 citation statement)
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“…Some species of sharks exhibit internal fertilization with ovoviviparity or viviparity (Wourms, ). They lay large eggs of 20–60 mm in diameter (Rêgo et al, ), but the behavior of nuclei in polyspermic shark eggs remains unknown. In amphibians, physiological polyspermy in urodeles was probably acquired in a species whose egg size was over 2 mm in diameter (Iwao, ).…”
Section: Examples Of Physiological Polyspermy In Other Taxamentioning
confidence: 99%
“…Some species of sharks exhibit internal fertilization with ovoviviparity or viviparity (Wourms, ). They lay large eggs of 20–60 mm in diameter (Rêgo et al, ), but the behavior of nuclei in polyspermic shark eggs remains unknown. In amphibians, physiological polyspermy in urodeles was probably acquired in a species whose egg size was over 2 mm in diameter (Iwao, ).…”
Section: Examples Of Physiological Polyspermy In Other Taxamentioning
confidence: 99%