Pyrethroids play an important role in modern agriculture but their use is not without risks to non-target organisms and habitats. They have high toxicity to a broad spectrum of aquatic organisms. The aim of the study was to investigate the effect of low concentration (0.02 μg l(-1)) of two widely used pyrethroids--cypermethrin and deltamethrin on phyto- and zooplankton. The acute bioassays were...

The study aimed to assess the relationship between surface water quality and diversity of planktonic communities in An Giang province, Vietnam. national technical regulations on quality, index (WQI), Shannon-Wiener (H') were applied evaluate quality. considerable influence parameters dominant plankton was determined by canonical correspondence analysis (CCA) similarity percentage (SIMPER). resu...

Crowding chemicals influence a wide variety of life history traits in zooplankton communities. In the rotifer Brachionus, sexual reproduction (mixis) is induced by a chemical signal produced by the rotifers that accumulates during population growth. The specificity of the reaction to the mixis induction signal could play a central role in maintaining reproductive barriers between closely relate...

The red snapper (Lutjanus campechanus) has one of the most valued fisheries in southeastern United States and been largely studied for its aquaculture potential with varied results that revealed production challenges. This study focused on addressing challenges larval rearing juvenile this species. Broodstock fish were acclimated a 60 m3 tank equipped recirculating system (RAS) temperature cont...