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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.
Banana slugs are hermaphroditic, meaning they are both male and female at the same time. [3] During reproduction, Ariolimax buttoni engages in apophallation - the behavior in which a slug chews off its mating partner's penis. [5] Their mating season is very long, lasting from February to early September. In addition, the copulation itself is long.
The Pacific banana slug is the second-largest species of terrestrial slug in the world, achieving a length of up to 25 centimetres (9.8 in) [6] and a weight of up to 115 grams (4.1 ounces). [7] The largest slug species is Limax cinereoniger, which can reach 30 centimetres (12 in) in length. Banana slugs have an average lifespan of 1–7 years. [5]
The slugs then lie close together, remaining in the antiparallel configuration. Each protrudes from its genital pore a sarcobelum, a highly manoeuvrable penile structure, with which it strokes its mate. [14] A pair of banana slugs in antiparallel configuration prior to mating.
Here are some tactics to keep slugs at a distance from your vegetable garden and house, according to experts. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800 ...
Post mating, banana slugs will some times gnaw off their partners penis as an act of sperm competition called apophallation. [32] This is costly as they must heal, and spend more energy courting conspecifics that can act as male and female.
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 ...
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