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The slugs crawl in a clockwise direction so that their right sides, containing the genital pores, continually face each other. This circling may serve to assess whether the other is ready to mate; the speed of circling generally decreases as courtship progresses. The slugs then lie close together, remaining in the antiparallel configuration.
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.
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 ...
For most species, mating is between two individuals of opposite sexes. However, for some hermaphroditic species, copulation is not required because the parent organism is capable of self-fertilization ; for example, banana slugs. The term mating is also applied to related processes in bacteria, archaea and viruses.
During copulation both slugs cling together so closely that no everted genitalia are visible. [3] Under laboratory conditions, the first eggs are laid 5–15 days after copulation. [3] At one time approximately 15 eggs are laid. [3] This can be repeated several times, but in total not more than 100 eggs are laid by one individual. [3]
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Land snail is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as slugs). However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water.
One sign of an earwig infestation are tiny, irregular holes in the leaves of your plants, Emtec said. They also leave tiny, black droppings that look like grains of pepper.