Global plastic production has surged since the 1960s, resulting in the pervasive presence of microplastics in the environment, yet there is a substantial gap in understanding historical trends of plastic pollution in wildlife. Recent discoveries of significant microplastic contamination in fishes have sparked considerable contemporary advancements in analytical methods and hold the potential to fill gaps in historical trends. We measured the presence of microplastics in museum-archived myctophids (Stenobrachius leucopsarus, Diaphus theta, and Tarletonbeania crenularis) collected from 1962 to 2016, to determine if trends in contamination levels over time correspond with the rise in plastics production.
View Article and Find Full Text PDFDispersal of eggs and larvae from spawning sites is critical to the population dynamics and conservation of marine fishes. For overfished species like critically endangered Nassau grouper (), recovery depends on the fate of eggs spawned at the few remaining aggregation sites. Biophysical models can predict larval dispersal, yet these rely on assumed values of key parameters, such as diffusion and mortality rates, which have historically been difficult or impossible to estimate.
View Article and Find Full Text PDFMeasuring the spatial distribution of microparticles which include synthetic, semi-synthetic, and anthropogenic particles is critical to understanding their potential negative impacts on species. This is particularly important in the context of microplastics, which are a form of microparticle that are prevalent in the marine environment. To facilitate a better understanding of microparticle occurrence, including microplastics, we sampled subadult and young juvenile Black Rockfish () at multiple Oregon coast sites, and their gastrointestinal tracts were analyzed to identify ingested microparticles.
View Article and Find Full Text PDFThiamine (vitamin B) metabolism is an important driver of human and animal health and ecological functioning. Some organisms, including species of ferns, mollusks, and fish, contain thiamine-degrading enzymes known as thiaminases, and consumption of these organisms can lead to thiamine deficiency in the consumer. Consumption of fish containing thiaminase has led to elevated mortality and recruitment failure in farmed animals and wild salmonine populations around the world.
View Article and Find Full Text PDFBackground: Data from sex offender treatment programmes (SOTP) on the re-offending of convicted sex offenders from the prison service in England and Wales was recently reviewed and found to be associated with no change in sexual reoffending. While this result is at variance with a number of other reviews it does give rise to concern as most programmes for individuals with intellectual disabilities adopt similar treatment methods. It is therefore important to consider the treatment outcomes for this client group by conducting a meta-analysis to examine treatment effects.
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