The receptor organs or sense organs of Dogfish (Scoliodon) include the paired olfactory, optic or photoreceptor, statoacoustic organs, the lateral line organs or neuromasts and the ampullae of Lorenzini. Olfactory Organs (Olfactoreceptors): The olfactory organs of Dogfish (Scoliodon) are a pair of blind olfactory sacs lying on the ventral side of the head in front of the mouth. They are [...]
In this article we will discuss about the nervous system of dogfish with the help of suitable diagrams. Central Nervous System: The central nervous system is essentially tubular and encloses a narrow central canal within the spinal cord which widens out anteriorly to form the ventricles of the brain. 1. Brain: The brain of Scoliodon is large and considerably advances [...]
In this article we will discuss about the external features of dogfish with the help of suitable diagrams. Shape, Size and Colour: Dogfish (Scoliodon) has a long, laterally compressed spindle-shaped body tapering at both ends. The full grown specimen measures from 30 to 60 cm in length. The colour of the body is dark grey above and pale white beneath, [...]