Inventory testing analyses and you may ecosystem activities would be increased with increased precise morphometric relationship


Inventory testing analyses and you may ecosystem activities would be increased with increased precise morphometric relationship

(12) Kobayashi, D. 2004. Unpubl. study with the file from the Pac. Isl. Seafood. Sci. Cent., Natl. Mar. Fish. Serv., 2570 Dole Roadway, Honolulu, Hey 96822-2396.

(14) Uchiyama, J. H., and you will R. A beneficial. Skillman. Unpubl. data into the document at Pac. Isl. Fish. Sci. Cent., Natl. Mar. Fish. Serv., 2570 Dole Path, Honolulu, Hey 96822-2396.

One another dolphinfish and you can wahoo fall into the newest species cutting-edge out of Pelagic Government Device Kinds on the Western Pacific Regional Fishery Administration Council (NMFS, 2001), where they represent an important element of the economical landings. Weight-length relationships are also used in transforming metrics in mark and you will recapture experiments plus databases devoid of often metric, and can be used to suggest muscles status otherwise robustness out-of fish from inside the an inventory (Ce Cren, 1951). This study into the dolphinfish and wahoo landed at Honolulu seafood public auction while in the 1988-89 identifies W-L predictor details considering lots and lots of proportions coating a broad dimensions 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 mature quality singles ne 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 studies have worked briefly which have intimate dimorphism of dolphinfish. Particular enjoys plotted the brand new W-L relationship separately for men and you can ladies (Beardsley, 1967; Rose and Hassler, 1968; Chatterji and you may Ansari, 1985; and you may Oxenford and you may Hunte, 1986b) otherwise considering separate equations for males and you will females (Lasso and you can Zapata, 1999; Massuti ainsi que al., 1999) in the place of taking a statistical justification for the breakup. Wang (1979) tabulated new suggest W-L individually for males and you may female. Schuck (1951) and you will Beardsley (1967) just mentioned that the latest suggest W-L for men try higher than females. This study mathematically checked-out the real difference throughout the W-L coefficients regarding female and male dolphinfish (Dining table step 1) while the empirical difference in predict imply W-L can be viewed from inside the Contour 5. Bannister (1976) visually opposed plots from W-L dating of dolphinfish stuck about Mediterranean having those trapped regarding North carolina on the west Atlantic (Rose and you can Hassler, 1968). Estimated details and other statistical studies for diary-linearized W-L matchmaking away from Hawaiian dolphinfish are provided so anybody else is mathematically examine W-L coefficients out of dolphinfish off their elements and particularly other areas of your own Pacific Basin (Table cuatro).

The consequences out of sex and you may times to the details had been along with checked out

Matsumoto (1967) receive 38 wahoo larvae and juveniles inside 1,643 products out-of oblique plankton tows collected from the unlock water, therefore a finite amount of spawning could also can be found offshore. However, a proceed to nearshore waters in-may for spawning regarding the june was consistent with the increase in standing and catch pricing regarding nearshore fisheries. A diagnosis today started regarding geographical designs and you can moving on regarding large catch rates components went to of the Hawaii-built longline fleet signifies that the highest abundance elements having wahoo contained in this a number of this new collection was southwestern of one’s islands season bullet however, bequeath northward to the seaside financial institutions marketed more step one,200 mi. during the summer. (12)

Arocha, F., L. A good. Marcano, An effective. Larez, D. Altuve, and you can J. Alio. 1999. New fishery, market size construction and you can oocyte development of dolphinfish, Coryphaena hippurus, from inside the Venezuela and you may adjacent seas. Sci. Mar. 63(3-4):401-409.

Oxenford and you can Hunte (1986b) plotted and you may visually opposed the fresh W-L relationship off dolphinfish of North carolina (Rose and Hassler, 1968), Florida (Beardsley, 1967), and Barbados (the investigation) and discovered absolutely nothing difference between the W-L matchmaking of these locations in the western and main Atlantic

Oxenford, H. Good. 1999. Biology of your dolphinlish (Coryphaena hippurus) on the western main Atlantic: an assessment. Sci. Mar. 63(3-4):277-301.

(11) Firing, J., Roentgen. Hocke, and R. Brainard. 2004. Skin acceleration and you will profiling drifters song prospective larval routes into the Northwestern Hawaiian islands. Poster presentation in the Northwestern Destinations 3rd Scientific Symposium, 2-, Their state Summit Cardio, Honolulu.


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