Conservation is imperative for the Asian snakeheads Channa striata, as the species has been overfished due to its high market demand. Using maternal markers (mitochondrial cytochrome c oxidase subunit 1 gene (COI)), we discovered that evolutionary forces that drove population divergence did not show any match between the genetic and morphological divergence pattern. However, there is evidence o...

The silver scabbardfish Lepidopus caudatus is a mesopelagic species living on the shelf and slope down to 600 m in temperate seas all around world. In Mediterranean, caught mainly by longlines with marked seasonality. early 90s Strait of Sicily (Central Mediterranean Sea), new fishery targeting L. was developed. This uses an ad hoc pelagic trawl gear called “ spatolara .” Vessels using have inc...

In this study, we employ a recently developed econometric technique of the threshold model with the GJR-GARCH process on error terms to investigate the relationships between weather factors and stock market returns in Taiwan using daily data for the period of 1 July 1997–22 October 2003. The major weather factors studied include temperature, humidity, and cloud cover. Our empirical evidence sho...

Recently, Starns et al. (2008) collected source judgments for old items, which participants had claimed to be new, and found residual source discriminability depending on the old-new response bias. The finding was interpreted as evidence in favor of the multivariate signal-detection model but against the high-threshold model of source memory. According to the latter, “new” responses only follow...

Abstract Microbial moribunds after microbial biomass turnover (microbial residues) contribute to the formation and stabilization of soil carbon pools; however, factors influencing their accumulation on a global scale remain unclear. Here, we synthesized data for 268 amino sugar concentrations (biomarkers in grassland forest ecosystems meta-analysis. We found that organic carbon, carbon-to-nitro...

Abstract Fall armyworm ( Spodoptera frugiperda ), a highly destructive and fast spreading agricultural pest native to North South America, poses real threat global food security. In this paper, explore the dynamics implications of fall outbreak in field maize biomass, we propose new dynamical system for biomass interaction via Caputo fractional-order operator, which is not only nonlocal operato...

Fisheries management involves a broad and complex set of tasks that are necessary to prevent overfishing help the recovery overfished stock. Monitoring fishing activities based on two main sources, landings data scientific surveys, is challenging task. collection often limited, which compromises accuracy results obtained. Therefore, several emerging applications molecular methods have potential...

Regulatory efforts to reduce bycatch fulfill multiple management goals -from protecting overfished and depleted species, to preventing over-harvest of species of unknown abundance, to acknowledging that vessels using different gear types require different harvest strategies, to matching within-year harvest rates to within-year abundance and congregation habits of managed species. These goals mu...

The fisheries sector in sub-Saharan Africa has benefitted from high and increasing amounts of foreign aid for over four decades. In the 1990s when evidence emerged that most stocks were overcapitalized and overfished, the effectiveness of fisheries development aid, particularly those directed at fishing capacity enhancement, came into question. This report examined the relationship between deve...

Around the globe, coral reefs and other marine ecosystems are increasingly overfished. Conventionally, studies of fishing impacts have focused on the population size and dynamics of targeted stocks rather than the broader ecosystem-wide effects of harvesting. Using parrotfishes as an example, we show how coral reef fish populations respond to escalating fishing pressure across the Indian and Pa...