Coherent Identifier About this item: 20.500.12592/vxd9pn

A review of the biology of opal squid (Loligo opalescens Berry), and of selected Loliginid fisheries : Synthèse sur la biologie du calmar opale (Loligo opalescens Berry) et sur certaines pêches aux calmars loliginidés




Several options are suggested to managers: status quo, active development of the fishery (with associated assessment and management frameworks), effort limitation, or complete closure of the fishery in the absence of assessment and management frameworks. [...] The objectives of the paper are: 1. To gather and synthesize all available published information on the biology, behaviour and ecology of loliginid squids, particularly L. opalescens; 2. To critically review available information on British Columbia opal squid fisheries; 3. To review assessment and management of fisheries for loliginid squid in general, and L. opalescens in particular, elsewhere i [...] The opal squid is one of 30-40 species of squid in the family Loliginidae (Nesis 1982; Boyle and Boletsky 1996)(Figure 3) and one of 21 species of squid known from B. C. waters (Table 1). [...] In pre-spawning mature males the weight of the reproductive organs constitutes 10 to 12% of the total body weight of small males (80-110 mm ML) and between 4.5 and 7% of the body weight of larger average spawning size (150 mm ML) males (Fields 1965; Hixon 1983). [...] The vas deferens is white and clearly visible on the posterior as well as the anterior part of the dorsal side of the spermatophoric complex.


oceans environment water stock assessment biology bycatch overfishing fishing genetics physiology zoology ecosystem fishing area nature ovary penis fisheries management molluscs fisheries resources natural science spawn (biology) trawling upwelling national marine fisheries service female sperm storage oviducal teuthida loligo vulgaris reynaudii tentacular european squid loligo vulgaris