The reproduction of Muricidae members (at which H. The analysis of the reproductive cycle of organisms permits to know the adequate moment and intensity of the capture to avoid the population depletion. The reproductive season is a crucial life history trait and the proper timing of breeding may be important to provide the offspring with favorable environmental conditions and to influence parental fitness.

The study of the reproductive processes in marine organisms is a fundamental biological aspect, which permits to understand their population dynamics. Under this scenario, it is advisable (if not indispensable) to gather baseline biological information that may be used to propose management measures promoting long-term sustainable resource exploitation. In the world, artisanal fisheries are in continuous expansion due to the growing demand and increasing value of appreciated species, and thus, the fisheries effort is augmenting. Our observations along the study period suggest that at Puerto ГЃngel, Oaxaca, this species is an important fishery resource as it supports around 80% of the gastropod catch for local population and tourism consumption. princepsis the second major exploited species after the oyster Striostrea prismatica. princepsis observed with less frequency in the subtidal zone at the Tenacatita (Jalisco) coral reef in search of other prey gastropods, although can be found in rocky substrates with heavy wave action. Hexaplex princeps(Broderip, 1833) is captured by several artisanal fisheries of Mexico: because of its size and taste, H. The presence of this species has been reported in Panama. The gastropod Hexaplex princepshas a spiny shell, height from 7.6 to 15.2В cm and whirl count 6 or 9 edge of lip armed with long, hollow, and frond-like spines is gonochoristic and the gonad with the digestive gland occupies the visceral coils distributes from the Gulf of California to Peru inhabiting moderately shallow waters. In Mexico, the gastropod catch in 2013 has the 19th place with 6011 ton. In the world, approximately 720 gastropod species are exploited. Recently, it has been reported that omega fatty acids, including docosahexaenoic acid (DHA) are key to brain health and most likely helped to drive the evolution of the modern human brain, when hominin ancestors consumed rich DHA marine shellfish. These invertebrates have been exploited since ancient times. Marine mollusks constitute one of the more important world fisheries representing around 10% of the total value and quantity. This study provides baseline information that may serve to establish measures for sustainable exploitation strategies and for future aquaculture implementation of this species. Spawning was related to high chlorophyll concentrations due to the upwelling processes resulting from the winds and to the cooler sea surface temperatures occurring from November to March. From March to October (females) and from May to June (males), reproduction resting occurred. The spawning season comprised from November (females) and December (males) to March, with activity peaks in January. princeps has an annual reproductive cycle with a long period of gonadal activity. Monthly variations of maturation stages showed that H. The maturity stages established for females were: (1) initial oogenesis, (2) previtellogenic maturity, (3) vitellogenic maturity, (4) maturity, (5) spawning, and (6) resting and for males: (1) initial spermatogenesis, (2) maturity, (3) spawning, (4) onset of the rest, and (5) resting. Sex proportion for the collected individuals was not statistically different from parity although most of the time, the number of males was slightly larger than that of females, which only outnumbered males during the spawning season. During two annual periods, the reproductive cycle of the gastropod Hexaplex princeps from Puerto ГЃngel, Oaxaca, Mexico was studied through gonadal histology.

El guerrero pacifico parte 2