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  • 1
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    World Squid Fisheries (2015)
    Taylor & Francis
    In:  Reviews in Fisheries Science and Aquaculture, 23 (2). pp. 92-252.
    Details
    Publication Date: 2019-01-23
    Description: Some 290 species of squids comprise the order Teuthida that belongs to the molluscan Class Cephalopoda. Of these, about 30-40 squid species have substantial commercial importance around the world. Squid fisheries make a rather small contribution to world landings from capture fisheries relative to that of fish, but the proportion has increased steadily over the last decade, with some signs of recent leveling off. The present overview describes all substantial squid fisheries around the globe. The main ecological and biological features of exploited stocks, and key aspects of fisheries management are presented for each commercial species of squid worldwide. The history and fishing methods used in squid fisheries are also described. Special attention has been paid to interactions between squid fisheries and marine ecosystems including the effects of fishing gear, the role of squid in ecosystem change induced by overfishing on groundfish, and ecosystem-based fishery management.
    Type: Article , PeerReviewed
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  • 2
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    Transport of the oval squid Sepioteuthis lessoniana Ferussac, 1831 in Lesson 1830-1831 (Cephalopoda: Loliginidae) for up to 24 h and subsequent transfer to an aquarium (2004)
    Japanese Society of Scientific Fisheries
    In:  Fisheries Science, 70 (1). pp. 21-27.
    Details
    Publication Date: 2021-07-14
    Description: Conditions for transporting live young and subadults of the squid Sepioteuthis lessoniana were investigated in a laboratory experiment and transport trial. In the lab experiment, survival was examined for various seawater conditions and transport procedures. The quality of the water containing the squid decreased (pH〈7.0, ammonia to 5.0 mg/L) and temperature decreased (range〉4°C) after 24 h, but 12 of 33 examined squid (body weight (BW) 5.0-877 g) survived these changes. Squid survival was high when the BW: seawater volume ratio started below 30. Also, survival was higher in large containers such as a styrofoam box with large (〉1620 cm2) bottom area. Based on these criteria, 24 squid (BW〈50-441 g) were transported by express delivery from Tokushima Prefecture to Saitama Prefecture (ca 740 km apart, transport duration 22-23 h); 20 of these squid survived the transport. When transferring the squid to an aquarium, special attention must be paid to acclimating the squid to the tank. Squid with a short (〈1 h) acclimation period died soon after transfer to the aquaria, but those with a longer (〉2 h) acclimation period survived the transfer.
    Type: Article , PeerReviewed
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  • 3
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    Estimation of Size Selectivity for Oval Squid Sepioteuthis lessoniana in the Squid Jigging Fishery of Tokushima Prefecture (1999)
    The Japanese Society of Fisheries Science
    In:  Fisheries science, 65 (3). pp. 448-454.
    Details
    Publication Date: 2021-06-25
    Description: This paper examines size selectivity in the squid jigging fishery for the oval squid Sepioteuthis lessoniana in Tokushima Prefecture using an extended SELECT model for analyzing size frequency distributions of squid caught by the squid jigging and by set nets. The SELECT model is extended to utilize size frequency distributions constructed from repeat measurements of catch in the squid jig as the test gear and the set nets as the control gear where data on the fishing efforts is not available with variable fishing efficiencies. As a result, size selectivity r(l) of squid jigs of a body size from 12 to 15 cm is expressed as a logistic function of the mantle length l, r(l)=exp(-10.0+0.485l)/[1+exp (-10.0+0.485 l)]. This equation indicates that oval squid of a size smaller than the jig is not caught by the jig. As the squid attacks the jig as a prey, the size selectivity of the squid jig found here is a type of prey size selectivity.
    Type: Article , PeerReviewed
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