In this study, concentrations of mercury (Hg) and 16 other elements as well as methylmercury speciation were quantified in muscle and liver of two commercial fish species. It was also our intention to evaluate potential risks to human health associated with seafood consumption. The fish species, Mullet and Kutum (Caspian White fish) fishes, were obtained from Tonekabon at the Iranian waters of ...

Understanding assemblages of fishes and how their numbers and compositions change over time and space has long been a fundamental interest of aquatic ecologists and has increasingly become recognized as an important component of fisheries science and management. Whereas much of traditional fisheries management may have focused on single-species approaches, targeting sport or commercial fishes, ...

Bioenergetic modeling provided insight into the potential for fishes to impact zebra mussel Dreissena polymorpha populations by predation across river and lake systems in eastern North America (13° latitude × 12° longitude). Food consumption modeling suggested that fishes in southern latitudes consumed up to 100 percent more food than those in northern systems. Much variation in food consumptio...

Understanding the interconnectivity of organisms among different habitats is a key requirement for generating effective management plans in coastal ecosystems, particularly when determining component habitat structures in marine protected areas. To elucidate the patterns of habitat use by fishes among coral, seagrass, and mangrove habitats, and between natural and transplanted mangroves, visual...

We analyzed fishermen’s local ecological knowledge (LEK) about the feeding habits, trophic interactions, habitats, fishing grounds, migration, and reproduction of nine coastal fishes in Búzios Island, southeastern Brazilian coast. We interviewed 39 fishermen using standardized questionnaires. Fishermen’s LEK on habitat use and trophic interactions for the studied fishes agreed with the scientif...

Although seagrass meadows form a relatively homogenous habitat, escarpments, which three-dimensional structures and originate from the erosion of peat, can provide important habitat for reef fishes. Here, we compare fish assemblages structural complexity among Posidonia australis escarpments canopies, as well limestone habitats, to understand role in Shark Bay, Western Australia. The total numb...