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VD = vas deferens Head of a mating Helix pomatia showing the everted penis (P), and the dart sac (S) in the process of shooting a love dart (D). Head of Helix pomatia after mating with everted vagina (V) and penis (P). Pulmonate land gastropods are simultaneous hermaphrodites and their reproductive system is complex. It is all completely ...
Mating Cornu aspersum garden snails The terrestrial slug Arion vulgaris, a mating pair with intertwined, everted penises, carrying out external sperm exchange The nudibranch sea slug Nembrotha rutilans, a mating pair. The mating of gastropods is a vast and varied topic, because the taxonomic class Gastropoda is very large and diverse, a group ...
The male genitalia consist of a tube that serves the formation of a spermatophore and its transfer into the female parts of the mating partner. The penis is the most distal and muscular part. A spermatophore is formed in the epiphallus (between vas deferens and penis) and the flagellum (continuation of the epiphallus proximally from the vas ...
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This process is unrelated to the coiling of the shell, which is a separate phenomenon. ... Courtship and mating in gastropods: fertilization is internal or external ...
Drymaeus tripictus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Bulimulidae. [1] Specimens vary in color patterns, but can be identified by their ventricose shape, broad bands of spots and an apex and peristome of bright rose coloration. [2] Some specimens have white or translucent dots on ...
18 April 2011 - Research on the mating of Chelidonura sandrana contradicts the traditional theory about mating in simultaneous hermaphrodites. 29 March 2011 - New family Horaiclavidae and families within Conoidea redefined; 8 February 2011 - A BBC crew filmed how the spider Olios coenobitus lifts a land gastropod shell into its web to use as a ...
Apophallation is the biting off of the penis, known to occur in terrestrial slugs, which are hermaphroditic gastropod mollusks. It has been reported in some species of banana slugs, Ariolimax, and in the distantly related Deroceras laeve. [1] [2] In the mating of banana slugs, the penis is inserted into the body of the partner.