• 제목/요약/키워드: Dolphinfish

검색결과 2건 처리시간 0.015초

한국 남해에 출현하는 만새기(Coryphaena hippurus)의 식성 (Feeding Habits of Dolphinfish Coryphaena hippurus in the South Sea of Korea)

  • 정재묵;최정화;임양재;김정년
    • 한국수산과학회지
    • /
    • 제50권5호
    • /
    • pp.541-546
    • /
    • 2017
  • Feeding habits of dolphinfish Coryphaena hippurus, were analyzed. Fish samples were collected by using a purse seine, fishing and set net in the southern sea of Korea from January to December 2015. The size of C. hippurus ranged from 23.8 to 127.4 cm in fork length. The species with the highest percent index of relative importance (%IRI; the most important prey taxa) in the diets of C. hippurus were teleosts and cephalopod, including Engraulis japonicus, Thamnaconus modestus and Trachurus japonicus, Loligo edulis was the most frequently consumed cephalopods. Coryphaena hippurus also ate small amounts of amphipods and carid shrimp. The dietary compositions of C. hippurus was not significantly different among size classes or seasons (ANOSIM, P>0.05). As body size of C. hippurus increased the mean number of prey per stomach (mN/ST) tended to decrease, but the opposite trend was evident for mean weight of prey per stomach (mW/ST). The mN/ST and mW/ST also significantly varied with season (one-way ANOVA, P<0.05).

Estimation of first maturity size of dolphinfish Coryphaena hippurus Linnaeus in the Molucca Sea, North Sulawesi, Indonesia

  • Pratasik, Silvester Benny;Tilaar, Ferdinand Frans;Salaki, Meiske Sofie
    • Fisheries and Aquatic Sciences
    • /
    • 제25권6호
    • /
    • pp.350-356
    • /
    • 2022
  • This study aims to estimate the smallest size of mature individuals that can be exploited. Fish samples of Coryphaena hippurus were collected from Kalinaun fishermen's catches in the Molucca Sea. They were sexed, then the fork length (FL) and maturity stage were recorded. Results showed that C. hippurus in the Molucca Sea had a sex ratio of 1:1.94 (p < 0.05). Males had a length range of 499-831 mm FL and females were in the length range of 481-813 mm FL. Size at first maturity was estimated as 529 mm FL for males with a range of 475-588 mm FL and 405 mm FL for females. This study provided basic information for future management needs of the dolphinfish, especially in the Molucca Sea.