Lamna+Nasus



**LAMNA NASUS-PORBEAGLE SHARK**
Genus-**Lamna
 * Animal Classification:
 * Species-**Nasus
 * Class-**Chondrichthyes
 * Order-**Lamniformes
 * Family-**Lamnidae

Low reproductive capacity and high commercial value (in target and incidental fisheries) of mature and immature age classes makes this species highly vulnerable to over-exploitation and population depletion.
 * Year announced endangered and reason:** 2006

**Geologic Processes:** Earthquakes,volcanoes,sea floor spreading, and subduction all occur in the Atlantic Ocean.
Labrador Current Gulf Stream North Equatorial Current South Equatorial Current North Brazil Current Guinea Current Angola Current Brazil Current Benguela current South Atlantic Current
 * Currents in Atlantic Ocean:**

Tides range anywhere from 11 ft-1foot in height.

In early April the shark works to get food right off the shore, and in June moves deeper out in to the ocean to get food.
 * Migration Patterns:**

The Porbeagle Shark and all sharks in general are decreasing in population.
 * Population Trends:**

The porbeagle is a short stocky shark that is blue-gray on top and white underneath with a white patch on the first dorsal fin. It has a crescent shaped tail and adults can get up to a size of 3.7 meters (12 feet). This shark has pretty big eyes. The teeth in the medium sized mouth are similar in both the upper and lower jaw (they are smooth-edged with lateral denticles), although young individuals may lack the lateral denticles.
 * Apearanace of Species:**

- 4 offspring - Gestation period is about 8 to 9 months - Female porbeagles reaches sexual maturity at about 12 to 13 years and males at 7 to 8 years.
 * Reproduction:**

-** white patch on the trailing edge of the dorsal fin - two keels on the caudal fin - conical snout - Sprial Valve - Ampullae of Lorenzini - Pectoral Fin - Anal Fin - Pelvic Fin - Second Dorsal Fin - First Dorsal Fin - Tail Fin -Gills
 * Animal Anatomy and Physiology:

Eats- Fish, Pollack, Cod, Ling, Coalfish, Bass, Hake, Mackerel, Herring, and Squid Predators- Orca, White Shark
 * Food Web:**

-**Fished and Sold
 * Economic Importance

- The Porbeagle is becoming endangered because it is being over fished, both as a target fish and as bycatch, and it can not keep up with reproduction.
 * Reasons for Endangerment**

-** Many plans have but thought up to help conserve the Porbeagle Shark but no plans have been put into action so far. The Porbeagle is listed as a species that urgently needs help.
 * Conservation Efforts

-** Ban Shark Fin Soup - Attempt to limit bycatch - Put all conservation efforts into full effect
 * Solutions




 * Scavanger Hunt**
 * 1) What year was the animal pronounced endangered?
 * 2) How long is the gestation period?
 * 3) What are two predators of the Porbeagle Shark?

[|**http://www.new-brunswick.net/new-brunswick/sharks/species/porbeagle.html**] [] [] []
 * Website resources:**