The Change of Visual Acuity of Larvae and Juveniles of Striped Beakperch in Accordance with Their Growth.

• Miyazaki Taeko

  Tokyo University of Fisheries

Bibliographic Information

Other Title

• イシダイ仔稚魚の成長に伴う視力の変化
• イシダイ シチギョ ノ セイチョウ ニ トモナウ シリョク ノ ヘンカ

Abstract

The visual acuties of striped beakperch larvae and juveniles were calculated from the size of baits taken and the reaction distance of the fish at 1000-1100 lx and the apparent contrast of the target at 2.0-3.0. The visual acuities were 0.011 for larva of 5.5mmTL and 0.06 for juvenile of 18mmTL. The relationship between visual acuity (VA) and fish size (TL) for the larval and juvenile stages were expressed by the equations VA=0.020 exp (0.326TL) and VA=-0.059+0.041 ln TL, respectively. The visual acuity of the juveniles was estimated to reach that of the adults at 38mmTL.<br> The visible ranges for 1 and 3mm size targets at the larval stage were 4 and 12cm, respectively, while at the juvenile stage they were five times those at the larval stage.

Journal

• NIPPON SUISAN GAKKAISHI

  NIPPON SUISAN GAKKAISHI 59 (3), 437-440, 1993

  The Japanese Society of Fisheries Science

Keywords

• Aquatic Science

Details

• CRID: 1390282681388414976
• NII Article ID: 130001545834
• NII Article ID: 10008265102
• NII Book ID: AN00193422
• DOI: 10.2331/suisan.59.437
• ISSN: 1349998X
• ISSN: 00215392
• NDL BIB ID: 3829513
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030512168
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3829513
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed