Filipino sawshark

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Filipino sawshark
Systematics
without rank: Sharks (selachii)
Superordinate : Squalomorphii
Order : Sawshark-like (Pristiophoriformes)
Family : Saw sharks (Pristiophoridae)
Genre : Pristiophorus
Type : Filipino sawshark
Scientific name
Pristiophorus lanae
Ebert & Wilms , 2013

The Philippine saw shark ( Pristiophorus lanae ) is a shark from the family of saw sharks (Pristiophoridae). Like its relatives, the shark is characterized by a long saw-like snout, which makes up 27.5 to 30.6% of the body length of this species. He lives off the coast of the Philippines . The shark was only scientifically described in December 2013 , but was already known and was listed under the name Pristiophorus species C.

features

The seven specimens (six females and one male) of the Philippine sawshark examined for the first description had body lengths of 39.6 to 83 cm. It is a saw shark with five gill slits (genus Pristiophorus ), whose rostrum , reminiscent of a saw, is relatively long and narrow. The barbels are closer to the mouth than to the tip of the rostrum. The triangular head is strongly flattened above the eyes. The body is cylindrical, approximately round in cross-section and not flattened like that of the saw ray . The first dorsal fin begins behind the free tip of the pectoral fins. The placoid scales on the sides of the body are single-pointed, mostly flat and arranged like roof tiles. The color of the fish is uniformly dark brown on the back, lighter below and without stripes, spots or other characteristic markings.

distribution

The Philippine saw shark is only known from the Philippines and there mainly from the south. Evidence is available from the islands of Apo , Negros and Siquijor , from the Mindanao Sea and from Balayan Bay and from the Gulf of Ragay near southern Luzon . It is probably more widespread in the western North Pacific.

Way of life

Almost nothing is known about the way of life of the Filipino sawshark. The type specimens were caught over the continental shelf at depths of 229 to 593 meters. X-rays revealed a bony fish skeleton in the digestive tract of the holotype . The size of the newborn is unknown.

literature

Individual evidence

  1. ^ Leonard Compagno , Marc Dando, Sarah Fowler: Sharks of the World. Princeton Field Guides, Princeton University Press , Princeton and Oxford 2005; Pp. 131-136, ISBN 978-0-691-12072-0 .

Web links