Length–weight relationships and biological data on guayana pike‐conger Cynoponticus savanna (Bancroft, 1831). (15th December 2014)

• Record Type: Journal Article
• Authors: Reis‐Filho, J. A.; Specht, L.
• Is Part Of: Journal of applied ichthyology. Volume 31:Number 2(2015:Apr.)
• Page Start: 405
• Page End: 408
• Publication Date: 2014-12-15
• Subjects: Fishes -- Periodicals; Fish culture -- Periodicals; Fisheries -- Periodicals; Ichthyology -- Periodicals; 597
• DOI: 10.1111/jai.12662
• Languages: English
• ISSNs: 0175-8659

Abstract

<abstract abstract-type="main" id="jai12662-abs-0001"> <title>Summary</title> <p>This study presents the first references available for <italic>Cynoponticus savanna</italic> length–weight relationships (LWR) as well as other biological information, based on its unique population in the South Atlantic Ocean, specifically, Todos os Santos Bay, on the Brazilian central coast. A total of 464 individuals were obtained from artisanal fishing landings between July 2012 and June 2013. Total lengths ranged from 14.5 to 139.6 cm. The length‐weight relationship was BW = 0.716 TL^3.31. Length at first maturity (<italic>L</italic>_m) was 48.9 cm. Reproduction began gradually in May, reaching a peak around December, with most individuals completing reproduction by January. The gonadosomatic index (GSI) was highest in January (GSI<italic> </italic>= 0.21) and lowest in March (GSI<italic> </italic>= 0.024). The male index (GSI = 0.073) was lower than in females (GSI<italic> </italic>= 0.10) (P &lt; 0.01). This study presents the first population data for <italic>C. savanna</italic>, which is under threat due to overfishing and habitat loss.</p> </abstract>