Biological data on pelagic fishes sampled from North Carolina charter boat landings, 1978
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Biological data on pelagic fishes sampled from North Carolina charter boat landings, 1978
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    Pelagic fishes landed by the North Carolina charter boat fleet were sampled from May through November 1978 to gather size, age, reproductive, and dietary information. Approximately 3,900 fish representing 15 species in the families: Pomatomidae, Coryphaenidae, Sphyraenidae, Scombridae, and Istiophoridae were examined. The most frequently encountered species were dolphin Coryphaena hippurus, bluefish, Pomatomus saltatrix, king mackerel, Scomberomorus cavalla, wahoo, Acanthocybium solanderi, yellowfin tuna, Thunnus albacares and blackfin tuna, Thunnus atlanticus. Monthly data are presented here on mean sizes, length frequency distributions, sex rations, stages of sexual maturity, total length-fork length, and length-weight relationships for most species except billfish. For the billfishes (sailfish, Istiophorus platypterus, blue marlin, Makaira nigricans and white marlin, Tetrapturus albidus) we provide mean weights and weight frequency distributions. Length and seasonal distributions indicate that at least two stocks of bluefish may occur in the State's coastal waters. The collection of reproductively active female bluefish, king mackerel, dolphin, wahoo, blackfin tuna, little tunny, Euthynnus alletteratus, albacore, Thunnus alalunga, and Atlantic bonito, Sarda sarda suggest these species spawn off North Carolina. In addition to the above species, bluefin tuna, Thunnus thynnus, skipjack tuna, Euthynnus pelamis, and barracuda, Sphyraena barracuda were sampled infrequently. Mean size and notes on female gonad condition are included for each of these species.
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