Occurrence of<i>Squalus cubensis</i>Rivero, 1936, in the Western South Atlantic Ocean, and incidence of its parasitic isopod<i>Lironeca splendida</i>sp. n.

Sadowsky, Victor; Moreira, Plínio Soares

doi:10.1080/01650528109360588

Cited by 10 publications

(14 citation statements)

References 6 publications

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“…In S. cubensis, this could be due to the ontogenetic shift in habitat use reported by Sadowsky and Moreira (1981), whereby immature animals inhabit shallower waters than their mature conspecifics; Squalus cubensis is thought to be 25 cm -27…”

Section: Resilience To Longline Capturementioning

confidence: 96%

First description of deep-water elasmobranch assemblages in the Exuma Sound, The Bahamas

Brooks

Williams

et al. 2015

Deep Sea Research Part II: Topical Studies in Oceanography

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Section: Resilience To Longline Capturementioning

confidence: 96%

First description of deep-water elasmobranch assemblages in the Exuma Sound, The Bahamas

Brooks

Williams

et al. 2015

Deep Sea Research Part II: Topical Studies in Oceanography

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“…It has been suggested, however, that at least five species, including S. cubensis, S. mitsukurii, S. acanthias, S. (Sadowsky and Soares Moreira, 1981;Vooren et al, 1990;Soarez et al, 1992;Fischer et al, in press). Aspects of the biology of these species have been examined in selected areas of their distributions throughout the world, especially for the commercially-important S. mitsukurii (e.g.…”

Section: Introductionmentioning

confidence: 95%

Notes on the reproduction of Squalus megalops off northeastern Brazil

et al. 2006

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“…Watson and Smale, 1998, 1999; Graham, 2005) and S. cubensis (e.g. Sadowsky and Soares Moreira, 1981; Soarez et al., 1992), and very little information is available on poorly studied species such as Cirrhigaleus asper (Compagno, 1984).…”

Section: Introductionmentioning

confidence: 99%

Maturation of Squalus mitsukurii and Cirrhigaleus asper (Squalidae, Squaliformes) in the southwestern equatorial Atlantic Ocean

et al. 2006

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Summary Specimens of Squalus mitsukurii (n = 206) and Cirrhigaleus asper (n = 93) were opportunistically collected from the catches of a research vessel using traps and benthic longlines off the coast of northeastern Brazil between March 1997 and August 2002. For both species, larger females than males were captured. Catches of S. mitsukurii were biased toward females (1 : 4.6), while no significant disequilibrium in sexes was detected for C. asper (1 : 0.86). Common regressions for total length (TL) and eviscerated weight (EW) were calculated as LnEW = 3.13LnTL − 6.217 (S. mitsukurii) and LnEW = 3.22LnTL − 7.01 (C. asper). Based on changes to the reproductive tract, females and males of each species were categorized into several stages of maturation. Sizes at sexual maturity for female (n = 169) and male (n = 37) S. mitsukurii were 77.8 and 65.0 cm TL, respectively. Gravid S. mitsukurii had between 3 and 11 embryos that ranged in size from 2.0 to 22.5 cm TL (n = 262). No significant bias in the sex ratio of embryos was detected. A clear relationship between embryonic development and maturation of the ovary demonstrated that female S. mitsukurii are ready to ovulate immediately after parturition. Female (n = 43) and male (n = 50) C. asper approached sexual maturity at 110.0 and 91.0 cm TL, respectively. Uterine fecundity in gravid C. asper ranged from 12 to 19 embryos that varied in size between 4.0 and 21.9 cm TL. Unlike S. mitsukurii, there was no concurrent development of the ovary and embryos. The results are discussed in terms of the reproductive plasticity of S. mitsukurii and the need for further life history studies on both species.

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Occurrence ofSqualus cubensisRivero, 1936, in the Western South Atlantic Ocean, and incidence of its parasitic isopodLironeca splendidasp. n.

Cited by 10 publications

References 6 publications

First description of deep-water elasmobranch assemblages in the Exuma Sound, The Bahamas

First description of deep-water elasmobranch assemblages in the Exuma Sound, The Bahamas

Notes on the reproduction of Squalus megalops off northeastern Brazil

Maturation of Squalus mitsukurii and Cirrhigaleus asper (Squalidae, Squaliformes) in the southwestern equatorial Atlantic Ocean

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