Effect of methyl farnesoate on late larval development and metamorphosis in the prawn Macrobrachium rosenbergii (Decapoda, Palaemonidae): A juvenoid-like effect?

Uri Abdu, Peter Takac, Hans Laufer, Amir Sagi

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

Methyl farnesoate (MF), the unepoxidated form of insect juvenile hormone III, was detected in larvae of the freshwater prawn. Macrobrachium rosenbergii, which metamorphose to post-larvae following 11 larval stages. The possible role of MF as a morphogen was studied by administering the compound to M. rosenbergii larvae via an Artemia vector. Higher MF levels caused earlier retardation of late larval growth, and the highest dose retarded larval development. Furthermore, MF significantly affected the patterns of metamorphosis and the appearance of intermediate individuals exhibiting both larval and post-larval morphology and behavior. Three intermediate types were defined, two of which were found only at the MF-treated groups and one that was exclusive to the higher dose treatments. The relative abundance of intermediate specimens increased from 2% in the control to 32% in the high MF concentration, which suggests that MF has a juvenoid-like effect in this decapod crustacean.

Original languageEnglish
Pages (from-to)112-119
Number of pages8
JournalBiological Bulletin
Volume195
Issue number2
DOIs
StatePublished - 1 Jan 1998

ASJC Scopus subject areas

  • General Agricultural and Biological Sciences

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