Ecdysteroids and juvenoids in two male morphotypes of< i> Libinia emarginata Academic Article uri icon


  • Abstract Two forms of the large-clawed male spider crab, Labinia emarginata, from the same molt stage, were examined to determine possible roles of ecdysteroids and juvenoids (methyl farnesoate) during maturation of the reproductive system and mating behavior. These forms are distinguished by the condition of the epicuticle covering the exoskeleton, abraded (worn away) and unabraded (intact), and mating behavior, active and inactive, respectively. Methyl farnesoate (MF) levels in the blood are high during active …

publication date

  • January 31, 1993