RT journal article
T1 Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific
A1 Mendoza-Nieto, Kléver
A1 Casimiro-Soriguer Escofet, María Milagrosa
A1 Carrera-Fernández, Maribel
A2 Biología
K1 condition factor
K1 hepatosomatic index
K1 gonadosomatic index
K1 allometry
K1 Selene peruviana
AB The Peruvian moonfish (Selene peruviana) is an important fisheries resource that is landed in the main fishing harbors of Ecuador.At the local level, little information is available regarding the biology of this species, which hinders the development of management plans. Thepresent study evaluates the reproductive characteristics of S. peruviana such as the size at sexual maturity and reproductive cycle. Specimenswere obtained from artisanal and industrial catches from January 2017 to December 2018. The morphometric characteristics, sex, and maturitystage of 886 specimens were determined, and the gonadosomatic index (GSI), hepatosomatic index (HSI), and relative condition factor (Kn)were estimated. The length-weight relationship and length at sexual maturity (L50) were evaluated with an allometry equation and multi-modelanalyses, respectively. The mean capture size (total length, TL) was 23.62 cm for males and 22.97 cm for females. A sex ratio (M:F) of 0.70:1.00(χ2 = 26.28, P < 0.05) was obtained. The allometric factor of the length-weight relationship for both sexes (b) was 2.63 (t = 12.16, P < 0.05),and the coefficient of determination (r2) was 0.89, which suggests that negative allometric growth was present. The L50 (TL) was estimated tobe 22.61, 23.86, and 23.27 cm for males, females, and sexes combined, respectively. The monthly GSI, HSI, and Kn values were significantlydifferent (K-W, P < 0.05) among study months. The maximum GSI values were observed in February and March, which constituted the periodof highest reproductive activity. The HSI and Kn values exhibited similar trends. The size at sexual maturity was similar to the average catchsize, which could indicate that S. peruviana is currently at the limit of its optimal catch size
PB INST INVESTIGACIONES OCEANOLOGICAS
SN 0185-3880
YR 2023
FD 2023
LK http://hdl.handle.net/10498/31410
UL http://hdl.handle.net/10498/31410
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 09-nov-2026