Stock investigations analyses and you can environment patterns might be improved with an increase of accurate morphometric matchmaking
(12) Kobayashi, D. 2004. Unpubl. analysis to your document in the Pac. Isl. Fish. Sci. Cent., Natl. Mar. Seafood. Serv., 2570 Dole Highway, Honolulu, Hello 96822-2396.
(14) Uchiyama, J. H., and you will R. A. Skillman. Unpubl. research toward file on Pac. Isl. Fish. Sci. Cent., Natl. Mar. Seafood. Serv., 2570 Dole Street, Honolulu, Hello 96822-2396.
One another dolphinfish and you will wahoo end up in the fresh new types cutting-edge of Pelagic Administration Equipment Kinds with the Western Pacific Local Fishery Administration Council (NMFS, 2001), in which they show a significant component of the commercial landings. Weight-duration relationship are also useful changing metrics for the mark and you may recapture experiments plus in database without having sometimes metric, and additionally they are often http://datingranking.net/tr/lumenapp-inceleme used to indicate system updates otherwise robustness regarding fish for the an inventory (Ce Cren, 1951). This research towards the dolphinfish and you may wahoo arrived during the Honolulu fish market through the 1988-89 relates to W-L predictor details considering a large number of measurements covering an extensive proportions range.
Male dolphinfish achieve larger sizes than females. The largest male during the sampling period measured 149 cm, whereas the largest female measured 137 cm. In the initial data examination consisting of 2,495 paired measurements, 13 observations were identified as outliers and deleted from all further analyses. Using data trimmed to a range of 65-137 cm FL, the differences in W-L parameters based on sex for dolphinfish were both significant (coefficient: p <0.01 and exponent: p <0.01; Table 1). Females and males were separately grouped by month of landing; data were trimmed to only include fish in the 90-135 cm FL range, and then analyzed by GLM. Other than March and April, most months covered about 90% or more of the trimmed length range. Month as a categorical factor was significant for both females (p < 0.05; Table 2) and males (p < 0.01; Table 3).
Earlier in the day studies have dealt temporarily having intimate dimorphism out-of dolphinfish. Some has plotted the fresh W-L dating separately for men and you will women (Beardsley, 1967; Flower and Hassler, 1968; Chatterji and you can Ansari, 1985; and you may Oxenford and Hunte, 1986b) otherwise given separate equations for males and you can people (Lasso and Zapata, 1999; Massuti et al., 1999) rather than taking a statistical justification towards the breakup. Wang (1979) tabulated the latest imply W-L alone for men and people. Schuck (1951) and you may Beardsley (1967) simply asserted that the new suggest W-L for males is actually more than girls. This research statistically checked-out the difference about W-L coefficients out of female and male dolphinfish (Dining table step one) and also the empirical difference between forecast imply W-L can be looked at during the Shape 5. Bannister (1976) aesthetically compared plots of land regarding W-L relationship off dolphinfish caught on the Mediterranean with those trapped regarding Vermont from the west Atlantic (Rose and you can Hassler, 1968). Estimated parameters or any other statistical studies getting journal-linearized W-L matchmaking off Hawaiian dolphinfish are provided so anyone else can mathematically contrast W-L coefficients out-of dolphinfish off their portion and especially other areas of Pacific Basin (Dining table cuatro).
The consequences regarding gender and you may week towards the parameters was also checked out
Matsumoto (1967) located 38 wahoo larvae and you can juveniles into the 1,643 trials away from oblique plankton tows compiled in the unlock water, very a small amount of spawning might can be found offshore. not, a relocate to nearshore waters in-may getting spawning regarding the summer would-be similar to the boost in position and you can connect rates regarding nearshore fisheries. An analysis now started regarding geographical activities and you can moving on out-of large connect speed parts went along to because of the Hawaii-depending longline fleet implies that the highest abundance portion getting wahoo within this variety of the fresh new collection is southwestern of countries year bullet however, give northward on the coastal banking institutions marketed over 1,2 hundred mi. in summer. (12)
Arocha, F., L. An excellent. Marcano, A great. Larez, D. Altuve, and you may J. Alio. 1999. The latest fishery, demographic dimensions design and oocyte development of dolphinfish, Coryphaena hippurus, when you look at the Venezuela and you may surrounding seas. Sci. Mar. 63(3-4):401-409.
Oxenford and you can Hunte (1986b) plotted and you may aesthetically opposed the brand new W-L matchmaking regarding dolphinfish out-of North carolina (Flower and you may Hassler, 1968), Fl (Beardsley, 1967), and you may Barbados (its studies) and found nothing difference between the newest W-L relationship among these places on the western and central Atlantic
Oxenford, H. A. 1999. Biology of your own dolphinlish (Coryphaena hippurus) on the western central Atlantic: an evaluation. Sci. Mar. 63(3-4):277-301.
(11) Shooting, J., R. Hocke, and you can R. Brainard. 2004. Skin velocity and you can profiling drifters track prospective larval pathways in the Northwestern Hawaiian islands. Poster presentation on Northwestern Destinations Third Medical Symposium, 2-, Their state Discussion Heart, Honolulu.