Result of pilot experiment of starvation resistance of artificially produced Pacific herring (Clupea pallasii)
2002
"Sasaki, M. (Hokkaido. Kushiro Fisheries Experiment Station (Japan)) | Takabatake, S. "
"The starvation resistance of Pacific herring (Clupea pallasii) was studied in rearing experiments with two fish groups; mean total length of fish used in experiments were 47mm (range: 36.5-58.0mm) and 68mm(range: 64.0-75.0mm). After starvation, 50% mortality the 47mm and the 68mm size groups occurred by days 19 day and 27, respectively. The relationship between days fish died with starvation (D) and total length (L: mm) is represented by the formula D=0.70*L-19.5. A few of 47mm size group fed at 11 days after the beginning of starvation experiment died immediately after feeding again; subsequently, others survived and the relation between total length and weight removed the alimentary canal, lever, and heart came to be the same as fed fish. Some of 68 mm size group fish, fed at 21days after the beginning of starvation experiment also died within a couple of days after feeding commenced again but others survived and relation between total length and the weight came to be the same as fed fish. The ratio of weight between fish under normal conditions and died are 0.87 on 40 mm, 0.76 on 60mm, 0.70 on 80 mm, respectively. From these experimental results clarifying the feeding habits of released artificial produced herring and the feeding ability of herring juvenile, we conclude that released fish do not often die directly from starvation."
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