Reproducción del pez erizo, Diodon holocanthus (Pisces: Diodontidae) en la plataforma continental del Pacífico Central Mexicano

Abstract

Reproduction of the Spiny Puffer, Diodon holocanthus (Pisces: Diodontidae) in the continental shelf of Mexican Central Pacific. Diodon holocanthus is an important economic and ecological species of the demersal fish community, caught as bycatch from local shrimp fishery. The reproductive biology of this longspine porcupinefish has not yet been described, and reproductive season, the sex ratio, length distribution, length at first gonad maturity, and the gonad macro and microscopic features are described. A total of 400 organisms, ranging from 5.0 to 40.3cm (average 18.4cm) total length, were caught from the continental shelf of the Central Mexican Pacific, from December 1995 and December 1998. Sex ratio was 1:0.86 females to males (n=253). The length at which 50% of the individuals showed maturing gonads was 19.7cm for females and 20.1cm for males. Length of the smallest organism with ripe gonads was 12.2cm for females and 13cm for males. Four gonadal maturation stages were found in both sexes, and five oocyte development phases were identified. The oocyte development pattern is of asynchronous type, which means the species can reproduce several times a year. Testicle development is lobular type, as in most teleost fishes. Monthly mean values of the gonad-somatic index suggest the reproduction activity peaks in June, and September-December. Rev. Biol. Trop. 59 (1): 217-232. Epub 2011 March 01.

Reproductive biology of the yellow snapper, Lutjanus argentiventris (Pisces, Lutjanidae), from the Mexican central Pacific

“…In L. argentiventris, we identified seven stages of oocyte development, representing most of oogenesis. Other studies have also identified from five to seven stages in other species caught off the coast of Jalisco (Lucano-Ramírez et al 2001a, 2011a. Sánchez-Cárdenas et al (2011) described seven stages of oocyte development in Sphoeroides annulatus, similar to those observed in the present study.…”

“…There are two types of testicular development: lobular and tubular. Lobular development has been observed in L. peru (Lucano-Ramírez et al 2001a), D. holocanthus (Lucano-Ramírez et al 2011a), and S. sierra (Lucano-Ramírez et al 2011b) caught off the southern coast of Jalisco. Like Sánchez-Cárdenas et al (2011), we observed a main duct, located in the central part of each testis.…”

“…Asynchronous spawning (partial and fractional) has been reported for Scomberomorus sierra (Lucano Ramírez et al 2011b), Prionotus ruscarius (Lucano-Ramírez et al 2005), Pseudupeneus grandisquamis (Lucano-Ramírez et al 2006), and Diodon holocanthus (Lucano-Ramírez et al 2011a), species that are distributed in tropical and subtropical El periodo reproductivo que se ha documentado para L. argentiventris en el litoral del Pacífico mexicano ha presentado ligeras variaciones. Piñón et al (2009) mencionaron que en el golfo de California, la especie se reproduce en verano e invierno.…”

“…En el presente trabajo se identificaron siete fases de desarrollo de ovocitos de L. argentiventris, las cuales representan gran parte de la ovogénesis. Otros trabajos realizados en la región han registrado de cinco a siete fases para otras especies capturadas frente a la costa de Jalisco (Lucano-Ramírez et al 2001a, 2011a. Sánchez-Cárdenas et al (2011) encontraron siete fases de desarrollo para los ovocitos de Sphoeroides annulatus; estas fases son semejantes a las observadas en este estudio.…”

Draft genome of a porcupinefish, Diodon Holocanthus

“…Among them, Diodon holocanthus is widely distribute in the tropical and warm waters of the Pacific, the Atlantic, and the Indian Ocean. D. holocanthus is a demersal fish species which can reproduce several times a year 3 and is of significant economic importance. The inflation mechanism, genome size variation, and genome evolution of pufferfish has been investigated 1,2,4,5 .…”