. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. "The time of day has a definite impact on the production of squid, but dependent on what type of gear or fishing ap- proach you use," Rathjen says. "If you're using bottom trawls, they're likely to be most effective during the time of day when there's bright light. The squid would be expected to be close to the bottom then. Characteristically squid will move off the bottom during hours of ; At night, Rathjen says another method, squid jigging, frequently used by the Japanese, i
. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. "The time of day has a definite impact on the production of squid, but dependent on what type of gear or fishing ap- proach you use," Rathjen says. "If you're using bottom trawls, they're likely to be most effective during the time of day when there's bright light. The squid would be expected to be close to the bottom then. Characteristically squid will move off the bottom during hours of ; At night, Rathjen says another method, squid jigging, frequently used by the Japanese, is more productive. An automated squid jig is used along with a light that is immer- sed in the water to attract small fishes and crabs, which in turn attract squid. The automatic jig consists of a reel, a roller and a strong monafilament line weighted at the end and rigged with a series of six to 10 squid jigs about three feet apart. A squid jig is a circle of barbless hooks, which snag the mollusks as the line is moved up and down. Jigging results in less damage to harvested squid than trawling, which sometimes crushes and tears the cephalopods. In fishing experiments conducted by the New York Sea Grant Extension Program, fishermen and extension specialists learned that the squid jigging devices caught limited quantities of Loligo squid, but worked well for catching ///ex squid. Converting a 50-foot boat for squid jigging costs between $10,000 and $30,000. Advisory agents concluded that until a stronger market for ///ex squid developed and a higher quality harvest demanded, conver- sion to squid jigging was not economically sound. Voss says the greatest potential for the squid fishery lies in the harvest of the brief squid, which prefers an in- shore habitat. "I really think that the small inshore squid has tremendous promise because it occurs in large num- bers," Voss says. "It's close in, so we don't have long runs out to the fishing grounds and back. It
Size: 2028px × 1232px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionunclibra, booksubjectoceanography