Spiny Dogfish Shark

By: Lauryn Sweet

Spiny Dogfish Label

Big image

Organs and their Functions

Gallbladder- functions in storage and flotation; has 3 lobes that functions in the storage of bile secreted from the liver

Heart- has two halves- atrium and ventricles; is a specialized muscle

Kidney- salt and water balance, eliminates the waste

Liver- it produces bile and stores all fatty reserves and energy, it also has oils to keep the shark buoyant

Pancreas- long and thin organ, produces hormones and digestive enzymes to help break down fats in the stomach

Small intestine- absorbs nutrients and minerals

Large intestine- absorbs the waste

Stomach- J-shaped organ; functions in digestion

Esophagus- connects the mouth to the stomach

Rectum- functions in the storage of solid waste

Claspers- assist in sperm transfer during mating; found in males only

Lateral line- a sensory organ that detects water movement

Gills- how the shark breathes

Habitat

  • they are located in water between 45-59 degrees Fahrenheit
  • they venture into brackish water
  • they are mostly bottom-dwellers, they dwell into depths up to 2,400 feet from the surface

Life Span

Dogfish shark's estimated life span range from 25-100 years.

Classification

Kingdom: Animalia

Phylum: Chordata

SubPhylum: Vertebrata

Class: Chondrichthyes

SubClass: Elasmobranchii

Order: Squaliformes

Family: Squalidae

Genus: Squalus

Species: Acanthias