Symbiotic Siphonostomatoida (Copepoda) of the hammerhead shark species Sphyrna zygaena (Carcharhiniformes: Sphyrnidae) and stingray Dasyatis pastinaca (Myliobatiformes: Dasyatidae) off the Canary Islands, with a re-description of Pseudocharopinus pillaii Kabata, 1979.

The biology, including accompanying ectoparasitic fauna, remains unstudied for several elasmobranchs off the Canary Islands in spite of concerns over their conservation. Within this region, this is the first report of copepod associations with these fishes. Twenty smooth hammerhead sharks, Sphyrna zygaena, and one common stingray, Dasyatis pastinaca, were inspected for symbionts on their body surface.

The complete mitochondrial genome of the Critically Endangered Angelshark, .

Here, we describe the first mitochondrial genome of the angelshark, The genome is 16,689 bp in length with 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and a non-coding control region. Base composition of the mitogenome has an A + T bias (62.9%), seen commonly in other elasmobranchs.