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Does a shell matter for defence? Chemical deterrence in two cephalaspidean gast...

Opisthobranch molluscs show an evolutionary trend to reduce, internalize and lose the shell. Many of them base their defensive strategies on natural deterrent products and current evolutionary theory suggests that the acquisition of chemical defences preceded shell reduction and loss, which has characterized the evolution of this group. Here we show that basal, shelled opisthobranch molluscs are defended agains...

Tuberculostatic activity of marine sesquiterpene (S)-(+)-curcuphenol and semisy...