New records of the striped cleaner shrimp Lysmata grabhami (Gordon, 1935) from Brazil, Southwestern Atlantic.

New records for Lysmata grabhami (Gordon, 1935) in Brazilian waters are presented. Four adult individuals from coastal waters off the city of Vitória, Espírito Santo coast and one adult from Trindade Island were collected during scuba diving in depths between 20-40 meters. These two records represent the southernmost published finding of this species in the Atlantic and the record for Vitória, Espirito Santo is the first from Brazilian coastal waters.Keywords: Decapoda

Effects of pile driving sound playbacks and cadmium co-exposure on the early life stage development of the Norway lobster, Nephrops norvegicus

There is an urgent need to understand how organisms respond to multiple, potentially interacting drivers in today’s world. The effects of the pollutants of anthropogenic sound (pile-driving sound playbacks) and waterborne cadmium were investigated across multiple levels of biology in larvae of the Norway lobster, Nephrops norvegicus under controlled laboratory conditions. The combination of pile-driving playbacks (170 dBpk-pk re 1 µPa) and cadmium combined synergistically at concentrations > 9.62 µg[Cd] L-1, resulting in increased larval mortality, with sound playbacks otherwise antagonistic to cadmium toxicity. Significant delays in larval development were caused by exposure to 63.52 µg[Cd] L-1, dropping to 6.48 µg[Cd] L-1 in the presence of piling playbacks. Pre-exposure to piling playbacks and 6.48 µg[Cd] L-1 led to significant differences in swimming behaviour of the first juvenile stage. Biomarker analysis suggested oxidative stress as the mechanism of deleterious effects, with cellular metallothionein (MT) being the predominant protective mechanism

Mangroves give cause for conservation optimism, for now

No abstract available