Stock comparison analyses and you can environment designs is increased with additional particular morphometric matchmaking

31 May Stock comparison analyses and you can environment designs is increased with additional particular morphometric matchmaking

(12) Kobayashi, D. 2004. Unpubl. investigation toward document from the Pac. Isl. Seafood. Sci. Cent., Natl. Mar. Fish. Serv., 2570 Dole Street, Honolulu, Hey 96822-2396.

The effects from intercourse and you can month on the parameters was indeed also examined

(14) Uchiyama, J. H., and you may R. Good. Skillman. Unpubl. study on document at Pac. Isl. Seafood. Sci. Penny., Natl. Mar. Seafood. Serv., 2570 Dole Roadway, Honolulu, Hey 96822-2396.

One another dolphinfish and you may wahoo fall under the newest kinds advanced of Pelagic Management Tool Types into West Pacific Local Fishery Administration Council (NMFS, 2001), where they depict a significant component of the commercial landings. Weight-duration dating are used in changing metrics inside mark and you may recapture studies plus in databases without having sometimes metric, plus they can be used to mean muscles position otherwise robustness out-of fish during the an inventory (Le Cren, 1951). This study for the dolphinfish and you may wahoo arrived during the Honolulu seafood market throughout 1988-89 means W-L predictor parameters considering many specifications coating an extensive size diversity.

Oxenford and Hunte (1986b) plotted and you may visually compared brand new W-L relationships regarding dolphinfish regarding North carolina (Flower and you will Hassler, 1968), Fl (Beardsley, 1967), and you will Barbados (their research) and found absolutely nothing difference in the fresh new W-L matchmaking of the towns on the western and you can central Atlantic

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).

Early in the day studies have dealt temporarily having intimate dimorphism from dolphinfish. Some have plotted the W-L relationship separately for males and you will female (Beardsley, 1967; Rose and you will Hassler, 1968; Chatterji and Ansari, 1985; and you can Oxenford and Hunte, 1986b) or offered independent equations for men and you can lady (Lasso and you will Zapata, 1999; Massuti mais aussi al., 1999) versus taking a mathematical excuse towards break up. Wang (1979) tabulated brand new mean W-L alone for males and you can female. Schuck (1951) and you may Beardsley (1967) merely said that the newest indicate W-L for men try higher than women. This research mathematically checked the difference on the W-L coefficients out-of male and female dolphinfish (Table 1) as well as the empirical difference in forecast imply W-L can be viewed in Profile 5. Bannister (1976) aesthetically opposed plots of W-L matchmaking out of dolphinfish caught throughout the Mediterranean which have those trapped of North carolina from the west Atlantic (Flower and you will Hassler, 1968). Projected parameters and other statistical studies to possess record-linearized W-L matchmaking regarding Hawaiian dolphinfish are offered very anybody else can also be mathematically evaluate W-L coefficients away from dolphinfish off their components and especially other areas of the Pacific Basin (Table 4).

Matsumoto (1967) discover 38 wahoo larvae and you may juveniles in the 1,643 samples off oblique plankton tows collected regarding unlock ocean, thus a small amount of spawning could also can be found overseas. However, a move to nearshore oceans in-may to possess spawning throughout the june would-be consistent with the boost in status and you will catch prices from the nearshore fisheries. An analysis now started off geographical habits and you may moving forward out of large hook rates section went along to by The state-situated longline collection implies that the greatest variety elements to possess wahoo in this directory of the fresh new fleet try southwest of your own isles seasons bullet however, give northward for the seaside banks marketed more step 1,two hundred mi. during the summer. (12)

Arocha, F., L. A great. Marcano, A good. Larez, D. Altuve, and you will J. Alio. 1999. This new fishery, market proportions construction and you will oocyte development of dolphinfish, Coryphaena hippurus, for the Venezuela and you may surrounding waters. Sci. Mar. 63(3-4):401-409.

Oxenford, H. An effective. 1999. Biology of one’s dolphinlish (Coryphaena hippurus) in the west main Atlantic: a review. Sci. Mar. 63(3-4):277-301.

(11) Shooting, J., R. Hocke, and you can R. Brainard. 2004. Surface speed and you may profiling drifters tune prospective larval pathways from inside the Northwestern Island destinations. Poster presentation from the Northwestern Island destinations 3rd Scientific Symposium, 2-, The state Discussion Cardio, Honolulu.