Coexisting with sharks: a novel, socially acceptable and non-lethal shark mitigation approach.

Conflict between humans and large predators is a longstanding challenge that can present negative consequences for humans and wildlife. Sharks have a global distribution and are considered to pose a potential threat to humans; concurrently many shark species are themselves threatened. Developing strategies for coexistence between humans and this keystone group is imperative.

Ultrasonography as a promising methodology to indicate captured-induced abortion in viviparous elasmobranchs.

This study aimed to characterize morphological aspects related to abortion through a non-lethal approach in the shortnose guitarfish Zapteryx brevirostris, an endemic and threatened species commonly caught by artisanal fisheries. Two females with signs of abortion and one female exhibiting external signs of pregnancy were purchased alive at a fish market during the period when this species has developing embryos in southern Brazil. Scans were conducted using a portable ultrasound.

Characterization of 11 Polymorphic Microsatellite Markers for Black Drummer (Girella elevata) Developed Using 454 Next-Generation Sequencing.

Black Drummer (Girella elevata) is a long-lived fish species that experiences considerable recreational fishing pressure, although managers lack a clear understanding of stock structure and dispersal patterns that are essential for the design, implementation, and administration of fisheries stock management. We used 454 sequencing to identify and develop 11 microsatellite primer pairs from 31 G. elevata All loci were found to be polymorphic, with the number of alleles detected ranging from 4 to 8 and observed heterozygosity ranging from 0.