A total of 23,639 swordfish females were analysed. The percentage of females larger that 145 cm shows important differences among areas. Maximum percentages were obtained in temperate waters South of 25º S and the lowest values in warm areas where small females were observed. The overall sex-ratio obtained was 51%. The sex-ratios at size suggest that females are predominant as of 170 cm althoug...

Climate change can affect the habitat of marine species and hence their persistence adaptation. Trends in area occurrence population biomass were examined for 177 fish macroinvertebrates resident to Northeast U.S. Continental Shelf ecosystem. Samples these organisms taken during a time series research bottom trawl surveys conducted spring autumn 1976–2019. The each taxon was modeled as distribu...

Sustainable fisheries management requires accurate stock assessment and an understanding of how targeted populations vary over space time respond to external stressors. Commercial fishery catch rate data (i.e. per unit effort; CPUE) are widely used assess performance can provide a measure abundance. However, changes in environmental conditions influence the two determinants CPUE, i.e. catchabil...

Many types of animals exhibit aggregative behavior: birds flock, bees swarm, fish shoal, and ungulates herd. Terrestrial and aerial aggregations can be observed directly, and photographic techniques have provided insights into the behaviors of animals in these environments and data against which behavioral theory can be tested. Underwater, however, limited visibility can hamper direct observati...

In this paper, we present an approach to compare the impact of different management options on the dynamics of a mixed fishery. We used ISIS-Fish, a simulation tool aimed at evaluating the impact of spatial and seasonal management measures on the dynamics of mixed fisheries. The French Nephrops norvegicus (Norway lobster) – Merluccius merluccius (hake) mixed fishery of the Bay of Biscay was cho...