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Stock assessment analyses and you may environment models would be improved with increased perfect morphometric dating

Stock assessment analyses and you may environment models would be improved with increased perfect morphometric dating

(12) Kobayashi, D. 2004. Unpubl. data to your document at Pac. Isl. Seafood. Sci. Penny., Natl. Mar. Seafood. Serv., 2570 Dole Path, Honolulu, Hi 96822-2396.

The results out-of intercourse and you will month towards variables was indeed and checked

(14) Uchiyama, J. H., and you will R. A. Skillman. Unpubl. study on the file at Pac. Isl. Fish. Sci. Penny., Natl. Mar. Fish. Serv., 2570 Dole Roadway, Honolulu, Hi 96822-2396.

One another dolphinfish and you can wahoo fall into new varieties cutting-edge of Pelagic Government Product Types toward Western Pacific Regional Fishery Government Council (NMFS, 2001), in which it portray an important element of the commercial landings. Weight-length dating are also useful changing metrics from inside the tag and you can recapture experiments plus in databases devoid of sometimes metric, and they can be used to indicate system standing or robustness regarding fish inside the a stock (Ce Cren, 1951). This study toward dolphinfish and you can wahoo arrived on Honolulu seafood market throughout the 1988-89 means W-L predictor parameters considering a huge number of proportions layer a wide dimensions variety.

Oxenford and you will Hunte (1986b) plotted and you may visually compared brand new W-L dating away from dolphinfish from Vermont (Rose and you will Hassler, 1968), Florida (Beardsley, 1967), and you can Barbados (their data) and discovered absolutely nothing difference between this new W-L matchmaking of these metropolitan areas on western and you will 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).

Past research has dealt temporarily that have sexual dimorphism regarding dolphinfish. Particular has plotted this new W-L relationship by themselves for men and you may lady (Beardsley, 1967; Flower and you can Hassler, 1968; Chatterji and Ansari, 1985; and you can Oxenford and you can Hunte, 1986b) or offered separate equations for males and females (Lasso and you may Zapata, 1999; Massuti mais aussi al., 1999) as opposed to bringing an analytical reason into separation. Wang (1979) tabulated the latest indicate W-L independently for males and you may female. Schuck (1951) and you will Beardsley (1967) only asserted that the brand new suggest W-L for males is actually higher than ladies. This research statistically checked-out the difference on the W-L coefficients out of male and female dolphinfish (Dining table step one) plus the empirical difference between predicted mean W-L can be viewed in the Figure 5. Bannister (1976) visually opposed plots from W-L matchmaking out of dolphinfish caught in the Mediterranean which have men and women caught out-of New york from the west Atlantic (Flower and Hassler, 1968). Projected variables and other statistical data to own diary-linearized W-L relationship from Hawaiian dolphinfish are given so others normally statistically contrast W-L coefficients of dolphinfish from other section and especially other places of your own Pacific Basin (Desk 4).

Matsumoto (1967) discovered 38 wahoo larvae and you may juveniles within the step 1,643 products out of oblique plankton tows accumulated in the unlock sea, so a restricted number of spawning may also occur offshore. However, a go on to nearshore oceans in-may to own spawning from the june might possibly be similar to the upsurge in condition and you can connect pricing throughout the nearshore fisheries. A diagnosis now started from geographic activities and you will moving forward away from highest hook rate parts decided to go to from the Hawaii-centered longline collection shows that the greatest variety areas having wahoo in this set of the newest collection is actually southwest of your own islands 12 months bullet but give northward into seaside banks distributed over step 1,2 hundred mi. in summer. (12)

Arocha, F., L. Good. Marcano, An excellent. Larez, D. Altuve, and you can J. Alio. 1999. The newest fishery, demographic dimensions build and you can oocyte growth of dolphinfish, Coryphaena hippurus, in Venezuela and you will adjacent waters. Sci. Mar. 63(3-4):401-409.

Oxenford, H. A great. 1999. Biology of your own dolphinlish (Coryphaena hippurus) about west central Atlantic: a review. Sci. Mar. 63(3-4):277-301.

(11) Firing, J., Roentgen. Hocke, and Jewish Sites dating review R. Brainard. 2004. Skin acceleration and you can profiling drifters track prospective larval paths during the Northwestern Island destinations. Poster presentation on Northwestern Destinations 3rd Medical Symposium, 2-, The state Summit Center, Honolulu.

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