Nidamental gland

Anatomical structure in cephalopods

Nidamental gland

Chtenopteryx sicula, a cephalopod with nidamental glands

The nidamental gland is an anatomical structure found in certain cephalopods, such as squid and octopus. These glands are involved in the reproductive process, specifically in the production of egg cases or egg masses.

Structure

The nidamental glands are typically large, paired organs located in the mantle cavity of female cephalopods. They are composed of glandular tissue that secretes substances used to form protective coatings around the eggs. In some species, the glands are accompanied by accessory nidamental glands, which contain symbiotic bacteria that may play a role in the production of antimicrobial compounds.

Function

The primary function of the nidamental gland is to secrete a gelatinous matrix that encases the eggs. This matrix provides protection and structural support to the eggs as they develop. The secretions from the nidamental gland may also contain antimicrobial properties, which help protect the eggs from bacterial infections.

Role in Reproduction

During the reproductive process, the female cephalopod releases eggs from the ovary into the mantle cavity, where they are coated with the secretions from the nidamental glands. The eggs are then laid in clusters or strings, depending on the species, and are often attached to substrates in the environment.

Related pages

• Cephalopod
• Reproductive system
• Squid
• Octopus