Journal of the Marine Biological Association of the United Kingdom

Research Article

Defensive adaptations in opisthobranchs

T. E. Thompsona1

a1 Marine Biological Station, Port Erin, Isle of Man


This is the third and concluding part of an investigation into defensive mechanisms in some British gastropods. The first part (Thompson & Slinn, 1959) dealt with a single species of opisthobranch, Pleurobranchus membranaceus, which proved able to secrete a strong acid if disturbed. The second part (Thompson, 1960 a) recorded further instances of acid secretion. The present paper describes the remainder of my work on opisthobranchs.