Ontogeny of phototactic behavior in phyllosoma larvae of the Japanese spiny lobster <i>Panulirus japonicus</i>

DOI Web Site Web Site 1 Citations 39 References
  • JINBO TADAO
    Shibushi Laboratory, National Research Institute of Aquaculture, Fisheries Research and Education Agency
  • MIZUMOTO YUTAKA
    Department of Marine Biosciences, Tokyo University of Marine Science and Technology
  • MURAKAMI KEISUKE
    Headquarters, Fisheries Research and Education Agency
  • HAMASAKI KATSUYUKI
    Department of Marine Biosciences, Tokyo University of Marine Science and Technology

Bibliographic Information

Other Title
  • イセエビフィロソーマ幼生の成長に伴う走光性の変化
  • イセエビ フィロソーマヨウセイ ノ セイチョウ ニ トモナウ ソウコウセイ ノ ヘンカ

Search this article

Abstract

<p> The larval sinking phenomenon is a cause of mortality due to injuries to body parts and the occurrence of bacterial disease among swarming larvae at the bottom of a rearing tank during larval culture of the Japanese spiny lobster Panulirus japonicus. As a basis for developing control measures for larval behavior in tanks to improve survival, we investigated phototactic traits of stage I-X phyllosoma larvae under different light intensities (6 levels, 0.0031 μmol m−2 s−1 to 310 μmol m−2 s−1 in 10% increments) and wavelengths (14 levels, 400-660 nm in 20-nm increments) under laboratory conditions. The controls were tested in the dark. Phototactic behavior of phyllosoma larvae changed with growth and differed under the different light intensities and wavelengths. Overall, positive and negative phototaxis were recorded at high light intensities (31 and 310 μmol m−2 s−1) and at low light intensities (0.0031 and 0.031 μmol m−2 s−1), respectively. Early larvae showed positive phototactic behavior over a broad spectrum of 400-620 nm, and in larvae after the middle stage, positive phototaxis was observed at <500 nm. Additionally, stage VI larvae showed specific behavior: they had negative phototaxis over a broad spectrum of 420-620 nm.</p>

Journal

Citations (1)*help

See more

References(39)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top