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Shortnose sawshark

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Shortnose sawshark

Shortnose sawshark
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Pristiophoriformes
Family: Pristiophoridae
Genus: Pristiophorus
Species: P. nudipinnis
Binomial name
Pristiophorus nudipinnis
Günther, 1870
Range of shortnose sawshark (in blue)

The shortnose sawshark or southern sawshark Pristiophorus nudipinnis, is a sawshark of the family Pristiophoridae. The body of this shark is slightly compressed, and its rostrum is narrow. The two dorsal fins are almost identical in size. In color, the dorsal side of this sawshark tends to be uniformly slate gray, with few or no markings. The ventral side is pale white or cream. Females reach around 124 cm (49 in) long, and males reach around 110 cm (43 in) long. These sharks can live to be up to 9 years old.

Contents

  • Behavior 1
  • Conservation 2
  • References 3
  • External links 4

Behavior

Leading a benthic lifestyle, the shortnose sawshark primarily feeds on benthic invertebrates and small bony fish. Like other sawsharks, this species' reproduction is ovoviviparous. It gives birth biannually to a litter of 7-14 pups. The size of pups at birth is about 35 cm (14 in).

Conservation

Because of stable commercial catch rates, reduced Total Allowable Catch, protection in Victorian waters, and a high rate of biological productivity, the shortnose sawshark is listed as Least Concern by the IUCN Red List. While the shortnose sawhark is fairly popular commercially, the largest threat to the species is actually being caught as bycatch in gillnet operations. Because of its habitat, size, and behavior, this species is considered to be harmless to humans.

References

  • Froese, Rainer and Pauly, Daniel, eds. (2006). "Pristiophorus nudipinnis in FishBase. May 2006 version.

External links

  • Species Description of Pristiophorus nudipinnis at www.shark-references.com
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