From the Hawaii industrial longline, troll, and you may handline fisheries having extremely migratory pelagic varieties, each other dolphinfish (mahimahi), Coryphaena hippurus, and you can wahoo (ono), Acanthocybium solandri, try in addition caught consequently they are from additional strengths in order to tunas, Scombridae, and billfishes, Istiophoridae. Their cousin variety, sector demand, and you may apparently quicker dimensions donate to its secondary role. However, while the some body became even more health conscious regarding later 1970’s, coupled with the new decline of several fisheries, the newest demand for both dolphinfish and you will wahoo increased. (1) From inside the 2003, the last 12 months by which done Hawaii condition fishery landings have been accumulated, 596 t out-of dolphinfish and 446 t away from wahoo was indeed arrived because of the commercial fishery during the The state. (2)
There has not even come a comprehensive assessment on the W-L dating getting wahoo trapped within the Island destinations
Because focus off fishery administration broadens to provide a greater a number of kinds in aquatic ecosystems, an expanding you desire exists to check hook analysis towards kinds caught incidentally. Weight-on-duration (W-L) and length-on-lbs (L-W) relationships are needed to move at-ocean length measurements so you’re able to weights, ine designs from inside the fish position that may give skills to your reproductive lifetime record and you may environment.
Of numerous W-L predictors were published for dolphinfish; these types of relationships was discussed throughout the Mediterranean and beyond (Bannister, 1976; Massuti mais aussi al., 1999); eastern warm Atlantic (Castro mais aussi al., 1999), west exotic Atlantic plus the Carribean (Oxenford and you will Hunte, 1986b; Oxenford, 1999), the fresh Straits away from Fl (Beardsley, 1967), Gulf and Gulf of mexico Stream (Gibbs and you will Collette, 1959), and you can New york oceans (Schuck, 1951; Rose and you can Hassler, 1968). On the Pacific, W-L predictors have been demonstrated to possess dolphinfish ca (Lasso and you can Zapata, 1999), the whole Pacific Water (Takahashi and you may Mori, 1973); Hawaii (Examiner and you will Nakamura, 1957); and you may Taiwan from the western Pacific (Wang, 1979). And this, a few of these studies checked fish when you look at the populations distant from Hawaii. This new solitary Hawaiian study–fish caught regarding Kaneohe Bay, Oahu–are predicated on a somewhat few measurements getting generally .teenager fish (Tester and you may Nakamura, 1957), and is also useless for discussing an entire size a number of dolphinfish which is officially arrived for the Hawaii.
Where many Niche dating services W-L predictors having dolphinfish was demonstrated all over the world, only about three typed reports (Iversen and you will Yoshida, 1957; Beardsley and you can Richards, 1970; Santana, ainsi que al. (3)) and you may a good PhD. thesis (Hogan, 1976) keeps demonstrated W-L relationships to have wahoo. A not too long ago wrote comment to your wahoo on west Main Atlantic area of the Oxenford ainsi que al. (2003) stated around three most other education within the a dining table of numerous morphometric matchmaking. Beardsley and you may Richards (1970) given a great W-L matchmaking getting wahoo out-of the southern area of Florida having fun with analysis obtained from taxi-dermists. Santana ainsi que al. (3) described the new W-L relationship from wahoo stuck inside the Canary Isles about east Atlantic Water. Throughout the Pacific Water, Iverson and you can Yoshida (1957) provided an excellent W-L dating to possess wahoo stuck inside the Range Isles about equatorial central Pacific.
Hogarth (1976) discussed an effective W-L relationships to have wahoo according to investigation regarding the sport fishery from the New york coast
Very migratory management species (tunas, billfishes, dolphinfish, wahoo, and other by-the-way trapped species) try trapped by regional fisheries around Hawaii and you may marketed on neighborhood fish public auction. New The state-centered longline fishery provides all of the dolphinfish and you will wahoo got in the seafood public auction, nevertheless troll fishery, lure boats, and also the handline fishery (i.elizabeth. deep-water handline, ikashibi, and you can palu-ahi) likewise have shared significantly to help you overall landings (NMFS, 2001). Wahoo landings height for the pounds in may consequently they are lowest in December-January. Dolphinfish landings peak during the weight regarding spring season and once again from inside the the newest slip. (2)
