Abstract Stingrays are a resource that is vulnerable to overfishing and habitat degradation. The research was conducted obtain data information still lacking much needed for the utilization protection of stingrays, including; life history, stomach contents, nursery ground. study in October - November 2018 by exploratory, including taking stingrays trawling measuring conditions with Conductivity...

Five new species of Acanthobothrium van Beneden, 1850 from the spiral intestine of a specimen of an unusual species of Himantura from the Arafura Sea off northern Australia are described. Acanthobothrium oceanharvestae sp. n. is one of 26 category 1 species (sensu Ghoshroy and Caira 2001) lacking post-ovarian testes; it differs from these in total length, number of proglottids, number of testes...

Madagascar is well known for producing exceptional fossils. However, the record for selachians remains relatively poorly known. Paleontological reconnaissance on the island of Nosy Makamby, off northwest Madagascar, has produced a previously undescribed assemblage of Miocene fossils. Based on isolated teeth, ten taxonomic groups are identified: Otodus, Carcharhinus, Galeocerdo, Rhizoprionodon, ...

A continuing impediment to the taxonomy of reticulate whipray Himantura spp. species complex is absence a type specimen for H. uarnak (Gmelin [ex Forsskål], 1789). Here, specimens were sampled from Jeddah region in Red Sea, assumed locality uarnak, and characterized genetically at cytochrome-oxidase subunit 1 (CO1) locus. One these now fish collection California Academy Sciences was designated ...