Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

A lock-on system in precopulae of Dikerogammarus villosus (Sowinsky, 1894), also present in Gammarus pulex pulex (Linnaeus, 1758) (Amphipoda). Amphipod Pilot Species Project (AMPIS) Report 2

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Crustaceana

In Dikerogammarus villosus and Gammarus p. pulex, a lock-on mechanism for amplexus was found. Large pores on the first and fifth female pereionites are involved, as well as the first pair of male gnathopods. On the anterior edge of pereionite 1 and the posterior edge of pereionite 5, specialized areas were found that allow penetration of the male's dactyli in the inter-segmental spaces of the female. Also, a guidance system for male attachment to the female was found using palmar spines of the first pair of gnathopods. The mechanism is described and discussed. Morphometric analysis of this lock-on system explains the strong size-relationship between partners. Chez Dikerogammarus villosus et Gammarus pulex, un mécanisme de verrouillage lors de la précopulation a été mis en évidence. Des pores de grande taille situés sur les premiers et cinquièmes péréionites de la femelle sont impliqués, ainsi que la première paire de gnathopodes mâles. Sur le bord antérieur du premier péréionite, et le bord postérieur du cinquième péréionite, des aires spécialisées ont été observées, qui permettent la pénétration des dactyles du mâle dans les espaces inter-segmentaires de la femelle. De même, un système de guidage pour l'attachement du mâle à la femelle a été trouvé, utilisant les épines palmaires de la première paire de gnathopodes. Le mécanisme est décrit et discuté. L'analyse morphométrique de ce système de verrouillage explique la forte relation liée à la taille entre partenaires.


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Crustaceana — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation