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Marine Biology

, Volume 15, Issue 4, pp 344–349 | Cite as

A bilateral gynandromorph of Nephrops norvegicus (Decapoda: Nephropidae)

  • A. S. Farmer
Article

Abstract

A bilateral gynandromorph specimen of Nephrops norvegicus (L.) from the Irish Sea is described. Previous records of gynandromorphs within the Nephropidae are discussed, together with other types of sexual abnormality found in N. norvegicus. It is suggested that the bilateral asymmetry is due to a chromosomal aberration in the first embryonic cleavage division, and that further division is determinate. In addition, it appears that the androgenic gland in N. norvegicus, Homarus gammarus and H. americanus does not have the same mode of action as that reported for Orchestia gammarella and O. cavimana.

Keywords

Chromosomal Aberration Previous Record Cleavage Division Androgenic Gland Bilateral Asymmetry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1972

Authors and Affiliations

  • A. S. Farmer
    • 1
  1. 1.Marine Biological StationPort ErinIsle of Man

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