Population structure and reproductive aspects of puffer fish Sphoeroides annulatus (Jenyns, 1842) (Pisces: Tetraodontidae), landed in Teacapán, Sinaloa, Mexico.

María Candelaria Valdez Pineda, ramon enrique moran angulo, Domenico Voltolina, Sergio Castillo Vargas_Machuca


DOI: https://doi.org/10.3856/vol42-issue1-fulltext-9

Abstract


The puffer fish Sphoeroides annulatus is an important target species for the artisanal fishing fleets of NW Mexico. Information on the total length and weight (TL and TW) ranges, sex ratio and reproductive stages of 745 specimens of this species landed from May 2010 to April 2011 in Teacapán, Sinaloa, NW Mexico. TL ranged from 15 to 40 cm and TW from 100 to 1600 g. There were no differences between mean TL and TW of males and females, and the respective mean values were 27.41 ± 4.14 cm and 534.5 ± 226.0 g. Sex ratio was not significantly different (X2= 0.03, P> 0.05) from 1F:1M. The equation for length-weight relationship for both sexes was TW = 0.044TL0 281, R2 = 0.895. The value of the slope b was significantly lower than 3 (p <0.05), and indicated negative allometric growth. The distribution of maturity stages indicated one main reproductive period from June to September, and a less intense one from November to December for females, and in December for males. Size at first maturity (L50%) of females was 26.52 cm and that of males was 27.41 cm.


Valdez Pineda M, moran angulo r, Voltolina D, Castillo Vargas_Machuca S. Population structure and reproductive aspects of puffer fish Sphoeroides annulatus (Jenyns, 1842) (Pisces: Tetraodontidae), landed in Teacapán, Sinaloa, Mexico.. Lat. Am. J. Aquat. Res.. 2017;42(1). Available from: doi:10.3856/vol42-issue1-fulltext-9 [Accessed 24 Jan. 2019].
Valdez Pineda, M., moran angulo, r., Voltolina, D., & Castillo Vargas_Machuca, S. (2017). Population structure and reproductive aspects of puffer fish Sphoeroides annulatus (Jenyns, 1842) (Pisces: Tetraodontidae), landed in Teacapán, Sinaloa, Mexico.. Latin American Journal of Aquatic Research, 42(1). doi:http://dx.doi.org/10.3856/vol42-issue1-fulltext-9