The marine dinoflagellate Vulcanodinium rugosum produces powerful paralyzing and cytotoxic compounds named pinnatoxins (PnTX) portimines. Even though, no related human intoxication episodes following direct exposure in seawater or the ingestion of contaminated seafood have been documented so far. This study aimed at investigating a bloom linked to acute dermatitis cases two recreational beaches...

Thirteen parataxa of crinoid plates from two localities the lower-middle Permian Las Delicias Formation are described. Both zones situated in Sierra de las Delicias, to southwestern Coahuila state. The Pentagonopternix coahuilensis n. sp., Cyclocaudex typicus, C. insaturatus, cf. Floricyclus diminuta sp. Preptopremnum rugosum, P. laeve, Heterostelechus keithi, Cyclocaudiculus regularis and Epic...

Fertilization Effects We often learn about things in science by serendipity. And when it comes to learning about bryophytes in ecosystems, we often learn by what we do to their neighboring tracheophytes. Hence, when we fertilize our gardens or add fertilizers to restore impoverished land, the bryophytes respond along with the intended tracheophytic plants. In general, fertilizers are detrimenta...

Goldberg et al. (1) used genome-wide ancient DNA data (2) from central European Bronze Age (BA) populations and their three ancestral sources of steppe pastoralists (SP), Anatolian farmers (AF), and European hunter-gatherers (HG) to investigate whether the SP migration into central Europe after 5,000 years ago (3, 4) was sex-biased. By estimating a lower proportion of SP ancestry on the X chrom...