Balanoglossus is a tubicolous or burrowing and exclusively marine animal. It is found in shallow waters between tide marks along the coast of warm and temperate oceans. Balanoglossus is world-wide in distribution. i. Burrow: Balanoglossus clavigerus is tubicolous living in U-shaped burrows excavated in the sandy bottom. The burrow has two vertical limbs 50 – 70 cm deep and the [...]
The coelom is enterocoelous having been formed as outgrowths of the enteron. Corresponding with the three body regions the coelom is divided into three portions which are completely separated from each other by septa. The coelom is lined with coelomic epithelium or peritoneum. But enteropneusts are peculiar in that their coelomic epithelium has connective tissue and muscle fibres which fill [...]
In this article we will discuss about the digestive system of balanoglossus with the help of suitable diagrams. Alimentary Canal: In Balanoglossus, the alimentary canal is a straight tube. Its anterior opening, the mouth, is wide and circular and situated on the ventral side in a groove between the proboscis stalk and collarette. The mouth remains open constantly. The posterior [...]