A dataset of seasonal fluctuations of molluscan populations from the southern Gulf of California subtropical arid zone.

The dataset contains insights into the molluscan diversity associated with seagrass and seasonal dynamics in a subtropical arid zone in the southern Gulf of California. The dataset includes the number of species, taxonomy, seasonal abundance data, trophic composition, biomass of molluscan, and biomass of seagrass (). This dataset is referenced in the study titled: "Diversity and seasonal variation of the molluscan community associated with the seagrass in a marine protected area in the southern Gulf of California" (Pérez-Estrada et al.

Reproductive biology of the bullseye puffer Sphoeroides annulatus: Gonadosomatic index and its suitability for estimating length at maturity.

This study aimed to describe updated information on the basic reproductive biology of Sphoeroides annulatus females and potential use of the gonadosomatic index as input data to assess length at 50% maturity ( ) and identify the breeding season. From April 2014 to December 2015, 767 females were analysed along the north-west coast of the Mexican Pacific Ocean. Both immature and mature females were represented in the total length ( ), which ranged from 81 to 440 mm, and the smallest mature female was 92 mm (new record for the species).

Inference for a discretized stochastic logistic differential equation and its application to biological growth.

In this paper, we present a method to adjust a stochastic logistic differential equation (SLDE) to a set of highly sparse real data. We assume that the SLDE have two unknown parameters to be estimated. We calculate the Maximum Likelihood Estimator (MLE) to estimate the intrinsic growth rate.

Length at Maturity, Sex Ratio, and Proportions of Maturity of the Giant Electric Ray, , in Its Septentrional Distribution.

The size at which a certain fraction of a fish population reaches sexual maturity is an important parameter of life history. The estimation of this parameter based on logistic or sigmoid models could provide different ogives and values of length at maturity, which must be analyzed and considered as a basic feature of biological reproduction for the species. A total of 305 individuals of () were obtained from artisanal fisheries in the Bahía de La Paz, Mexico.