mackerel shark

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n.
Any of various sharks of the family Lamnidae, including the great white shark, mako, and porbeagle, having a pointed snout, a nearly symmetrical tail, and a reputation for aggressiveness.



Mackerel shark (Lamna nasus)
(click to enlarge)
Mackerel shark (Lamna nasus) (credit: Painting by Richard Ellis/Encyclopædia Britannica, Inc.)
Any of several temperate-water sharks (genus Lamna) in a family (Isuridae) that also includes the great white shark and the mako shark group. The swift, active mackerel sharks have a crescent-shaped tail and slender teeth. They are gray or blue-gray above and paler below and about 10 ft (3 m) long. They eat fishes such as herring, mackerel, and salmon, sometimes taking fishermen's catches and damaging nets. They are fished commercially for food. Common species include the Atlantic mackerel shark, or porbeagle (L. nasus), and the Pacific mackerel shark, or salmon shark (L ditropis).

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Lamniformes
Temporal range: Early Cretaceous–Recent[1]
Great white shark, Carcharodon carcharias
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Selachimorpha
Order: Lamniformes
L. S. Berg, 1958
Families

See Text

Lamniformes is an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae). It includes some of the most familiar species of sharks, such as the great white shark, as well as more unusual representatives, such as the goblin shark and the megamouth shark.

Members of the order are distinguished by possessing two dorsal fins, an anal fin, five gill slits, eyes without nictitating membranes, and a mouth extending behind the eyes.

Contents

Species

The order Lamniformes includes seven families, with a total of sixteen living species:

Order Lamniformes

Sustainable consumption

In 2010, Greenpeace International has added the shortfin mako shark (Isurus oxyrinchus) to its seafood red list. "The Greenpeace International seafood red list is a list of fish that are commonly sold in supermarkets around the world, and which have a very high risk of being sourced from unsustainable fisheries." [2]

References

  1. ^ Froese, Rainer, and Daniel Pauly, eds. (2009). "Lamniformes" in FishBase. January 2009 version.
  2. ^ Greenpeace International Seafood Red list

External links


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