The Atlantic salmon (Salmo salar) is a charismatic anadromous fish of high conservation and economic value. Concerns have been expressed regarding the long-term viability of fisheries throughout the species's distributional range because of abundance variations that cannot currently be explained or predicted. Here, we analyse long-term catch data obtained over a wide geographical range and acro...

the main objective of the present study was qualitative assessment of golden gray mullet stocks by using indicators of overfishing in iranian waters of the caspian sea during a long period (1991-2011). three fisheries indicators in catch were: 1. percentage of mature fish, with 100% as target; 2. percent of specimens with optimum length, with 100% as target; and 3. percentage of mega-spawners, ...

The First Nations communities of Grassy Narrows and Wabaseemong (Ontario, Canada) have been impacted by mercury pollution since the 1960s. This study was implemented with the objective of providing these communities with information on current mercury concentrations in their catch, in order to make appropriate fish consumption choices. A total of 851 fish samples, including Walleye, Northern Pi...

The Northeast, Central, Western and Northwestern, and Patagonia and Tierra del Fuego regions dominate Argentina inland recreational fishing. Being each unique in terms of environmental context, fish fauna and fishery types. High species diversity, extractive fishing and highly priced fly-fishing catch and release fisheries characterizes the Northeast. The Central Western and Northwestern fisher...

The assessment of fish stocks is often limited by a lack comprehensive data. Therefore, catch-based methods are increasingly being used because the availability more catch However, models may perform differently for species with different traits and fishing histories. In this study, we investigated performance life history traits, histories, under length selections. We compared simulated biomas...

A reduction in species of Nile fish was observed during (2001-2020). Annual temperature revealed high levels (29 to 31 ˚C), with fluctuation between 2001 and 2008, decreased from 2009 2000. Rainfall fluctuated 2007, highest peaks 2019 2020. Positive correlation (r = 0.34402) found catch. Catch increased temperature. Negative -0.15869) catch rainfall, level recorded low rainfall. The results ind...