The English Channel has the highest long-finned squid landings in the Northeast Atlantic, making squid one of the most valuable resources exploited by demersal fisheries operating in this area. This resource consists of two short-lived long-finned squid species: Loligo forbesii and L. vulgaris , which have a similar appearance (they are not distinguished by fishers) but differ in the timing of their life cycle: in L. forbesii...