Development of Growth Hormone Cells of Laboratory Reared Yellowfin Tuna <i>Thunnus albacares</i> Larvae and Early Juveniles

• Kaji Tatsuya

  Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University

• Oka Masakazu

  Yaeyama Station, Japan Sea-Farming Association Hakatajima Station, Japan Sea-Farming Association

• Takeuchi Hiroyuki

  Yaeyama Station, Japan Sea-Farming Association Miyazu Station, Japan Sea-Farming Association

• Hirokawa Jun

  Yaeyama Station, Japan Sea-Farming Association

• Tanaka Masaru

  Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University

Bibliographic Information

Other Title

• Development of Growth Hormone Cells of Laboratory Reared Yellowfin Tuna Thunnus albacares Larvae and Early Juveniles

Abstract

Development of the pituitary and growth hormone (GH) cells of laboratory reared yellowfin tuna Thunnus albacares larvae and early juveniles were examined by histological and immunohistochemical procedures. The pituitary first appeared in the ventral edge of diencephalon of the brain on Day 2, and suspended from the brain on Day 16. The growth hormone (GH) immunoreactive cells were first detected on the day of first feeding, Day 4. Percent GH, defined as ratio of GH cell-mass volume to pituitary volume, was very high during the first three days after initiation of feeding. Percent GH rapidly decreased, and remained at the lowest level throughout the flexion phase. The ratio began to increase from the postflexion phase to the early juvenile stage. The %GH of yellowfin tuna was relatively higher than those of other marine fish species previously examined. These features suggest that the yellowfin tuna has a relatively high growth potential during the early life stages.

Journal

• Fisheries science

  Fisheries science 65 (4), 583-587, 1999

  The Japanese Society of Fisheries Science

Keywords

• yellowfin tuna
• growth hormone
• pituitary
• early development
• larva
• scombrid

Details

• CRID: 1390282679406110976
• NII Article ID: 130003742184
• NII Article ID: 10004879731
• NII Book ID: AA10993718
• DOI: 10.2331/fishsci.65.583
• NDL BIB ID: 4839715
• ISSN: 09199268
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4839715
• Web Site: https://www.jstage.jst.go.jp/article/fishsci1994/65/4/65_4_583/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed