Reproduction of Carangoides vinctus (Perciformes: Carangidae) in the Mexican Central Pacific

Abstract

This study aims to determine some aspects of the reproduction of Carangoides vinctus, a species caught by the artisanal fishery on the south coast of Jalisco. The captures were made monthly with gillnets from January 1998 to December 2008. The organisms had total length of 17.0 to 41.2 cm, with females averaging 30.1 cm and 30.5 cm males. The sex ratio was 1.0: 1.1 males per females, which is not significantly different from the expected 1:1. A gonadal maturity scale of four stages for both sexes (immature, developing, spawning capable and post-spawning or spent) was used. In the first three stages of the ovary’s development, a septum dividing each lobe was present. In the analysis of oogenesis, seven oocyte development phases were identified and the oocytes developed asynchronously within the ovary. Based on the microscopic characteristics observed in the testis, it showed a lobular type development. The maximum values of the gonadosomatic index, the percentage of mature gonads and the oocyte diameter suggest that C. vinctus has a reproductive period from March to May. The length at sexual maturity (L50) was estimated at 26.04 and 23.77 cm for females and males, respectively; these sizes are lower than the average catch size in both sexes, suggesting that organisms are caught commercially when they have reached sexual maturity.

Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific

“…The oceanographic conditions between the Pacific and Atlantic Oceans are different, and this variation in the size at sexual maturity can be observed among species in the same region and in the same species among different environments(Saborido-Rey 2008). A greater size at sexual maturity of females has been reported by other authors who have attributed this to energy expenditure during maturation, which is typical of tropical species(Lucano-Ramírez et al 2016) (Table5).High GSI values are associated with advanced stages of gonadal maturation(Grier and Uribe-Aranzábal 2009). Likewise, variations in liver weight are associated with the allocation of energy for different life processes (McBride…”

“…These species are distributed in the tropical and subtropical waters of the Atlantic, Pacific, and Indian Oceans, and some are of high economic value and exploited by both artisanal and industrial fisheries. For example, the horse mackerel (Trachurus murphyi) fishery in the South Pacific Ocean is becoming one of the most important fisheries in the world (Gerlotto et al 2012, Lucano-Ramírez et al 2016. One of the most representative genera of the Carangidae family is Selene, which is composed of 8 species that are distributed in the tropical coastal waters of the Atlantic and Pacific Oceans (Froese and Pauly 2022).…”

“…Estas especies se distribuyen en aguas tropicales y subtropicales de los océanos Atlántico, Pacífico e Índico y algunos tienen un alto valor económico y son explotados tanto por la pesca artesanal como por la industrial. Por ejemplo, la pesquería de jurel (Trachurus murphyi) en el océano Pacífico Sur se está convirtiendo en una de las pesquerías más importantes del mundo (Gerlotto et al 2012, Lucano et al 2016. Uno de los géneros más representativos de la familia Carangidae es Selene, el cual está compuesto por 8 especies que se distribuyen en las aguas costeras tropicales de los océanos Atlántico y Pacífico (Froese y Pauly 2022).…”