- Inventory investigations analyses and you may ecosystem patterns should be improved with more specific morphometric dating

Inventory investigations analyses and you may ecosystem patterns should be improved with more specific morphometric dating

(12) Kobayashi, D. 2004. Unpubl. research to your file at Pac. Isl. Fish. Sci. Penny., Natl. Mar. Fish. Serv., 2570 Dole Street, Honolulu, Hey 96822-2396.

The results out of sex and you will month towards the parameters was in fact plus examined

(14) Uchiyama, J. H., and you will Roentgen. A good. Skillman. Unpubl. data towards the document during the Pac. Isl. Seafood. Sci. Penny., Natl. Mar. Seafood. Serv., 2570 Dole Path, Honolulu, Hello 96822-2396.

One another dolphinfish and you may wahoo belong to this new kinds advanced from Pelagic Government Tool Types towards Western Pacific Local Fishery Management Council (NMFS, 2001), where it portray a significant element of the economic landings. Weight-duration relationships also are employed for converting metrics for the mark and recapture studies plus databases without having both metric, and so they can be used to suggest human anatomy standing or robustness out-of seafood from inside the an inventory (Ce Cren, 1951). This study into the dolphinfish and you will wahoo arrived from the Honolulu fish public auction during the 1988-89 makes reference to W-L predictor parameters centered on a great deal of proportions level a broad size diversity.

Oxenford and you will Hunte (1986b) plotted and aesthetically compared this new W-L dating from dolphinfish out-of North carolina (Flower and you will Hassler, 1968), Florida (Beardsley, 1967), and you can Barbados (their studies) and discovered absolutely nothing difference between this new W-L relationship of those urban centers regarding the western and you may main 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).

Prior studies have worked briefly with sexual dimorphism from dolphinfish. Some has plotted the W-L relationships by themselves for males and you will people (Beardsley, 1967; Rose and you will Hassler, 1968; Chatterji and you can Ansari, 1985; and you will Oxenford and Hunte, 1986b) otherwise offered separate equations for males and you can lady (Lasso and Zapata, 1999; Massuti ainsi que al., 1999) instead providing a mathematical excuse to your break up. Wang (1979) tabulated this new imply W-L by themselves for men and you will women. Schuck (1951) and Beardsley (1967) merely asserted that the mean W-L for men was greater than ladies . This study statistically checked the difference on W-L coefficients out-of female and male dolphinfish (Desk 1) additionally the empirical difference in predict suggest W-L can be seen within the Profile 5. Bannister (1976) aesthetically compared plots regarding W-L relationship of dolphinfish stuck on Mediterranean which have those people caught from North carolina about western Atlantic (Rose and you may Hassler, 1968). Estimated parameters and other statistical data having record-linearized W-L matchmaking out of Hawaiian dolphinfish are provided therefore someone else can mathematically examine W-L coefficients away from dolphinfish off their components and particularly other areas of the Pacific Basin (Dining table 4).

Matsumoto (1967) found 38 wahoo larvae and you may juveniles within the step one,643 examples of oblique plankton tows obtained on the unlock sea, very a restricted amount of spawning might also exist overseas. not, a move to nearshore oceans in may to own spawning on june could be consistent with the escalation in updates and you may hook rates on nearshore fisheries. A diagnosis today started regarding geographical habits and you can progressing away from higher hook rates areas decided to go to of the Hawaii-created longline fleet implies that the highest variety components to own wahoo in this set of the fresh new fleet is southwest of your own isles season bullet but spread northward to the coastal financial institutions marketed more 1,2 hundred mi. during the summer. (12)

Arocha, F., L. An effective. Marcano, A. Larez, D. Altuve, and you will J. Alio. 1999. The newest fishery, market dimensions build and oocyte growth of dolphinfish, Coryphaena hippurus, inside the Venezuela and you may adjoining seas. Sci. Mar. 63(3-4):401-409.

Oxenford, H. A good. 1999. Biology of the dolphinlish (Coryphaena hippurus) regarding the west central Atlantic: a review. Sci. Mar. 63(3-4):277-301.

(11) Firing, J., Roentgen. Hocke, and you may R. Brainard. 2004. Skin acceleration and you will profiling drifters track possible larval pathways in the Northwestern Island destinations. Poster presentation in the Northwestern Island destinations Third Medical Symposium, 2-, Hawaii Meeting Cardio, Honolulu.

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