Sandbar shark

Sandbar shark

Taxobox
name = Sandbar shark


status = LR/nt | status_system = IUCN2.3
trend = unknown
regnum = Animalia
phylum = Chordata
classis = Chondrichthyes
subclassis = Elasmobranchii
ordo = Carcharhiniformes
familia = Carcharhinidae
genus = "Carcharhinus"
species = "C. plumbeus"
binomial = "Carcharhinus plumbeus"
binomial_authority = (Nardo, 1827)

The sandbar shark, "Carcharhinus plumbeus", comes from the Carcharhinidae family of sharks, also called requiem sharks.

The sandbar shark is also called the thickskin shark or brown shark. It is one of the biggest coastal sharks in the world, and is closely related to the dusky shark, the bignose shark, and the bull shark. Its dorsal fin is triangular and very high, and weighs as much as 18% of the shark's whole body. Sandbar sharks usually have heavy-set bodies and rounded snouts that are shorter than the average shark's snout. Their upper teeth have broadly uneven cusps with sharp edges. Its second dorsal fin and anal fin are close to the same height. Females can grow to 2/2.5 m, males up to 1.8 m. Its body color can vary from a bluish to a brownish grey to a bronze, with a white or pale underside. Sandbar sharks swim alone or gather in sex-segregated schools that vary in size. They are most active at night, at dawn, and at dusk.

The sandbar shark, true to its nickname, is commonly found over muddy or sandy bottoms in shallow coastal waters such as bays, estuaries, harbors, or the mouths of rivers, but it also swims in deeper waters (200 m or more) as well as intertidal zones. Sandbar sharks are found in tropical to temperate waters worldwide; in the western Atlantic they range from Massachusetts to Brazil. Juveniles are common to abundant in the lower Chesapeake Bay, which is probably one of the most important nursery grounds on the United States east coast for this species.

The sandbar shark's main predator is man. Natural predators are the tiger sharks, and rarely by great white sharks. The sandbar sharks, and other requiem sharks, prey on finfish rays, bottom dwelling animals, seabirds and turtles.

Sandbar sharks are viviparous. The embryos are supported in placental yolk sac inside the mother. The female reproduces every two years. They give birth to 8 to 10 young. They carry the young for 1 year before birth.

ee also

* List of sharks

References

* Database entry includes justification for why this species is near threatened
*
*


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • sandbar shark — noun 1. widely distributed shallow water shark with fins seemingly dipped in ink • Syn: ↑blacktip shark, ↑Carcharhinus limbatus • Hypernyms: ↑requiem shark • Member Holonyms: ↑Carcharhinus, ↑genus Carcharhinus …   Useful english dictionary

  • brown Milbert’s sandbar shark — mažasis melsvasis ryklys statusas T sritis zoologija | vardynas taksono rangas rūšis atitikmenys: lot. Carcharhinus plumbeus angl. brown Milbert’s sandbar shark; brown shark; large finned sandbar shark rus. серо голубая песочная акула ryšiai:… …   Žuvų pavadinimų žodynas

  • large-finned sandbar shark — mažasis melsvasis ryklys statusas T sritis zoologija | vardynas taksono rangas rūšis atitikmenys: lot. Carcharhinus plumbeus angl. brown Milbert’s sandbar shark; brown shark; large finned sandbar shark rus. серо голубая песочная акула ryšiai:… …   Žuvų pavadinimų žodynas

  • Dusky shark — Conservation status …   Wikipedia

  • Bull shark — Conservation status Near Threatened ( …   Wikipedia

  • Electropositive shark repellent — Electropositive metals (EPMs) are a new class of shark repellent materials that produce a measurable voltage when immersed in an electrolyte. The voltages produced are as high as 1.75 eVDC in seawater. It is hypothesized that this voltage… …   Wikipedia

  • Tiger shark — For other uses, see Tiger shark (disambiguation). Tiger shark Temporal range: 50–0 Ma[1] …   Wikipedia

  • Requiem shark — Requiem sharks Temporal range: Early Eocene–Recent[1] …   Wikipedia

  • Jersey Shore shark attacks of 1916 — The Philadelphia Inquirer reported the capture of a man eating shark off the Jersey Shore after the attacks. The Jersey Shore shark attacks of 1916 were a series of shark attacks along the coast of New Jersey between July 1 and July 12, 1916, in… …   Wikipedia

  • brown shark — mažasis melsvasis ryklys statusas T sritis zoologija | vardynas taksono rangas rūšis atitikmenys: lot. Carcharhinus plumbeus angl. brown Milbert’s sandbar shark; brown shark; large finned sandbar shark rus. серо голубая песочная акула ryšiai:… …   Žuvų pavadinimų žodynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”