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Entwined everted penises of a pair of mating hermaphrodite slugs in the species Limax maximus. The reproductive system of gastropods (slugs and snails) varies greatly from one group to another within this very large and diverse taxonomic class of animals. Their reproductive strategies also vary greatly.
This is a lengthy process whereby the penis of one or both slugs is chewed off using the radula. In the case where one penis is chewed off, this is usually done by the other slug. A replacement penis does not grow back. Apophallation is most widely found in Ariolimax species, [1] which have internal sperm exchange. In these slugs, apophallation ...
Preserved specimen have a length of 25–30 mm and a width of 6–8 mm. [3] The weight of adult slugs ranges from 991.2 mg to 3308.0 mg. [4] Reproductive system: The penis is rounded, and half as long as the epiphallus. [3] The epiphallus is slightly widened and truncated (as if cut off) at its end.
In addition, the copulation itself is long. In a study conducted by Janet Leonard, data showed that on average the mating process would last up to seven hours with some extreme cases even taking 23. Since the slugs are hermaphroditic, one slug acting as the female would invert its penis for sexual reproduction to take place. However, cross ...
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.
This class comprises snails and slugs from saltwater, freshwater, and from the land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, land snails and slugs. The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca.
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A slug on a wall in Kanagawa, Japan.. Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc.The word slug is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a small internal shell, particularly sea slugs and semi-slugs (this is in contrast to the common name snail, which applies to ...