The soft red patch of the Australian freshwater crayfish (Cherax quadricarinatus (von Martens)): A review and prospects for future research

Ilan Karplus, Amir Sagi, Isam Khalaila, Assaf Barki

Research output: Contribution to journalReview articlepeer-review

10 Scopus citations

Abstract

The red patch located on the propodus of Cherax quadricarinatus males is a sexually dimorphic structure. This patch presents an enigma because it is soft and uncalcified, consisting of a thin red to whitish-orange membrane. It presents an impairment of the fighting capability of the males, which, like many other clawed crustaceans, use these appendages in intra- and interspecific aggressive interactions. Present knowledge on patch structure and colour, development and their endocrine control by the androgenic gland is reviewed. The function of the red patch as a possible sensory organ or social signal is discussed. The red patch may transmit information concerning the gender, size and quality of its owner. Several hypotheses concerning the signal function of the patch are suggested and evaluated in the light of our present knowledge of the social behaviour of C. quadicarinatus.

Original languageEnglish
Pages (from-to)375-379
Number of pages5
JournalJournal of Zoology
Volume259
Issue number4
DOIs
StatePublished - 1 Apr 2003

Keywords

  • Androgenic gland
  • Cherax quadricarinatus
  • Crayfish
  • Honest signal
  • Red patch

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Fingerprint

Dive into the research topics of 'The soft red patch of the Australian freshwater crayfish (Cherax quadricarinatus (von Martens)): A review and prospects for future research'. Together they form a unique fingerprint.

Cite this