Length-weight relationships for elasmobranchs from southeastern Brazil

Silva‐Junior, L. C. da; Andrade, Amanda Carvalho de; Vianna, Marcelo

doi:10.1111/j.1439-0426.2011.01791.x

Cited by 13 publications

(4 citation statements)

References 4 publications

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“…freminvillei and M . hypostoma ) , these methodological limitations may have affected the LWR parameters (Da Silva‐Junior, Andrade, & Vianna, ). Due of some of the shortcomings in the capture methodology (e.g.…”

Section: Discussionmentioning

confidence: 99%

Length–weight relationships of six elasmobranch species captured at the artisanal fishery of Margarita Island, Venezuela

González-González

Ehemann

2018

J Appl Ichthyol

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Summary This study reports the length–weight relationship (LWR) for five batoid and one shark species, all frequently captured by the artisanal commercial fishery on Margarita Island (10º44’–11º10’N and 63º46’–64º13’W), Venezuela. In 2013, elasmobranchs captured by the artisanal fleet (using bottom gillnets 200–400 m in length with 5–8 inch mesh size) were identified, sized, weighed and sexed. The value of a ranged from 0.0006 to 0.0351, meanwhile the b value ranged from 2.84 (for pooled Myliobatis freminvillei) to 3.39 (male Mustelus higmani), with r2 ranging from 0.920 to 0.991. Differences in LWR due to sex were observed for three elasmobranch species. This study offers LWRs separate for males and females, also for species for which LWRs already exist and thus new knowledge is gained through the estimate presented here.

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Section: Discussionmentioning

confidence: 99%

Length–weight relationships of six elasmobranch species captured at the artisanal fishery of Margarita Island, Venezuela

González-González

Ehemann

2018

J Appl Ichthyol

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“…It has been described that SWR may be affected by factors such as the morphology, the size variation within the samples under study, and a limited sample size (da Silva‐Junior, Andrade, & Vianna, ; Hernández‐Serna et al., ). Regarding M. longirostris and G. marmorata , despite the limited sample size a high value of r 2 was achieved due to a width range of disc widths (Table ).…”

Section: Discussionmentioning

confidence: 99%

Size-weight relationships of batoids captured by artisanal fishery in the southern Gulf of California, Mexico

et al. 2017

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Summary This study reports the size–weight relationships (SWR) for nine batoid species that are frequently fished by the artisanal fisheries in the southern Gulf of California. Analysis included a total of 2,012 specimens, caught from October 2013 to July 2016. The slope values (b) oscillated from 2.80 to 3.56. Growth was isometric for five species and positively allometric for four. There were differences in SWR between sexes for three species being in all cases the female greater and heavier than males. This is the first analysis of SWR for the batoid species studied in the Gulf of California.

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“…According to Lessa (), sexual differences in Rhizoprionodon lalandei LWRs indicate a considerable ontegenetic increase in weight. Elasmobranch females commonly exhibit higher weights than males of the same species, influencing the LWR parameters such as in higher values of b (Silva‐Júnior, Andrade, & Vianna, ). In addition, sexual differences may represent different reproductive efforts: for viviparous species, the higher TL, the greater their fecundity (Batista, ).…”

Section: Discussionmentioning

confidence: 99%

Length-weight relationship of Rhinobatos horkelii Müller & Henle, 1841 and Zapteryx brevirostris (Müller & Henle, 1841) off Brazil, southwestern Atlantic Ocean

2016

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Length-weight relationships for elasmobranchs from southeastern Brazil

Cited by 13 publications

References 4 publications

Length–weight relationships of six elasmobranch species captured at the artisanal fishery of Margarita Island, Venezuela

Length–weight relationships of six elasmobranch species captured at the artisanal fishery of Margarita Island, Venezuela

Size-weight relationships of batoids captured by artisanal fishery in the southern Gulf of California, Mexico

Length-weight relationship of Rhinobatos horkelii Müller & Henle, 1841 and Zapteryx brevirostris (Müller & Henle, 1841) off Brazil, southwestern Atlantic Ocean

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