By Takashi Kitagawa, Shingo Kimura
This booklet makes a speciality of most modern details at the biology and ecology of the 3 bluefin tuna species: the Pacific (Thunnus orientalis), Atlantic (T. thynnus), and southern bluefin tuna (T. maccoyii). within the ebook, the phylogeny and simple ecological details reminiscent of adolescence heritage, age and progress, and nutrition behavior are lined. details on the topic of migratory ecology, and significant organic facets reminiscent of metabolism and energetics, swimming functionality, education, visible body structure, and reproductive body structure also are incorporated.
Furthermore, new learn insights approximately different types of mathematical versions for bluefin tuna ecology are brought. the entire chapters are contributed via energetic scientists engaged in bluefin tuna learn. The purpose of this e-book is to give a contribution to a greater realizing of the biology and ecology of bluefin tuna, and inspire undergraduate and graduate scholars who learn this publication to develop into bluefin tuna scientists who can give a contribution to additional knowing of the biology and ecology of bluefin tuna.
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Extra resources for Biology and ecology of bluefin tuna
These gene-targeting expression analyses, as well as the large-scale exhaustive expression analyses using next generation sequencers, will make it possible to detail biological processes such as growth, survival and adaptation to the environment. Further exploration of the gene assemblage in the Pacific bluefin tuna genome is expected to rapidly progress the studies concerning the early life history of Pacific bluefin tuna. Future Prospects of the Studies for Early Life History of Paciϐic Blueϐin Tuna The studies for early life history of tuna based on the field surveys have been conducted to elucidate the mechanisms of annual variations of recruitment and consequently Early Life History 43 to aim at optimizing stock management.
1996; Miyashita et al. 2001). Tanaka et al. (2007b) showed ontogenetic changes in RNA/DNA ratios of hatchery reared larval and juvenile Pacific bluefin tuna in order to elucidate the growth performance. 0 (Fig. 12). After that, the ratio steeply increased to 20 on 23 DAH. In this study, yolk-sac larvae were fed from 19 DAH. Thus, the value of RNA/DNA ratio which is an indicator of protein synthesis activity rapidly increased after the first feeding of yolk-sac larvae. It is suggested that high activity of protein synthesis induced by the onset of piscivory supports the high somatic growth of late-larval to early juvenile stages.
Mar. Ecol. Prog. Ser. 63: 93–104. W. O. Davis. 1991. Density dependence of larval growth of a marine fish, the southern bluefin tuna, Thunnus maccoyii. Can. J. Fish. Aquat. Sci. 48: 1358–1363. , M. Tanaka, Y. Takahashi, M. Oka and N. Ishibashi. 1996. Preliminary observations on development of Pacific bluefin tuna Thunnus thynnus (Scombridae) larvae reared in the laboratory, with special reference to the digestive system. Mar. Freshwater Res. 47: 261–269. , C. Sato and K. Nakata. 1996. Nutritional condition of first-feeding larvae of sardine Sardinops melanostictus.