• sperm
  • The snails produce both eggs and sperm in the ovotestis (also called the hermaphrodite gland), but it is later separated into two divisions, a sperm duct and oviduct, respectively. (wikipedia.org)
  • The exchange of sperm between both of the two land snails is a completely separate part of the mating progression. (wikipedia.org)
  • Gastropoda
  • The aperture of the shell in Helix as in all vegetable-feeding Gastropoda is entire, i. e. forms an unbroken curve: in carnivorous Gastropoda on the contrary it is notched or produced into a canal which lodges a process of the mantle or siphon: e. g. in the Whelk. (chestofbooks.com)
  • shell
  • When the snail hibernates it closes the aperture of its shell by a whitish disc, the hibernaculum or epiphragma - a structure containing much organic matter and calcareous granules of variable shape irregularly scattered. (chestofbooks.com)
  • These same secretions are used by the snail to quickly regenerate it's shell and body whenever damaged or infected. (fishpond.co.nz)
  • In addition to the hard calcareous shell that covers and protects the internal organs, the head and foot region can be observed when the snails are fully extended. (wikipedia.org)
  • The snail extends the tentacles by internal pressure of body fluids, and retracts all four tentacles into the head by invagination when threatened or otherwise retreating into its shell. (wikipedia.org)
  • Please see WoRMS A. palliata normally lives on the shell of a sea snail which is housing a hermit crab. (wikipedia.org)
  • accidentally
  • The snail is relished as a food item in some areas, but it is also widely regarded as a pest in gardens and in agriculture, especially in regions where it has been introduced accidentally, and where snails are not usually considered to be a menu item. (wikipedia.org)
  • chitinous
  • The mouth is located beneath the tentacles, and contains a chitinous radula with which the snail scrapes and manipulates food particles. (wikipedia.org)
  • tentacles
  • The head of the snail has two pairs of tentacles: the upper and larger pair contain the eyes, and the lower pair are used to feel the ground in front. (wikipedia.org)
  • The two snails circle around each other for up to six hours, touching with their tentacles, and biting lips and the area of the genital pore, which shows some preliminary signs of the eversion of the penis. (wikipedia.org)
  • umbilicus
  • The reflection of the peristome over the umbilicus in Helix is due to the presence of a 'columellar lobule' or projection of the collar. (chestofbooks.com)
  • formation
  • A snail does not have a dart to fire the very first time it mates, because the first mating is necessary to trigger the process of dart formation. (wikipedia.org)
  • eggs
  • Antibacterial lysozyme-like activity against Micrococcus luteus in eggs and some tissues of snails Helix aspers maxima and Achatina achatina was detected in a turbidimetric standard assay. (edu.pl)
  • About two weeks after fertilisation, the snail lays a batch of about 80 spherical pearly-white eggs into crevices in the topsoil, or sheltered under stones or the like. (wikipedia.org)
  • dart
  • As the snails approach mating, hydraulic pressure builds up in the blood sinus surrounding the organ housing the dart. (wikipedia.org)
  • Then, when the body of one snail touches the other snail's genital pore, it triggers the firing of the dart. (wikipedia.org)
  • A snail often mates without having a dart to use, because it takes time to create a replacement dart. (wikipedia.org)
  • people
  • It regularly attracts up to 400 people to the village, more than doubling its usual population.the rules are that you're not allowed to touch your snail during the race, change snails or doing something that would make your snail go faster than it should. (wikipedia.org)
  • wild
  • These hand-picked wild snails have been cleaned, selected, scalded and sterilized to obtain a quality snail, accompanied by a jar of our homemade sauce ready to mix, heat and serve. (bagescargol.com)
  • The life span of snails in the wild is on average two or three years. (wikipedia.org)
  • take
  • The young snails take one to two years to reach maturity. (wikipedia.org)
  • There are numerous snail racing events that take place in different places around the world, though the majority take place in the United Kingdom. (wikipedia.org)
  • years
  • After snails hatch from the egg, they mature in one or more years, depending on where the organism lives. (wikipedia.org)
  • world
  • The annual "World Snail Racing Championships" started in Congham, Norfolk in the 1960s after founder Tom Elwes witnessed the event in France. (wikipedia.org)
  • The 2008 World Championships was won by Heikki Kovalainen, a snail named after the Formula One racing driver, in a time of three minutes, two seconds. (wikipedia.org)
  • The 2010 World Championship was won by a snail called Sidney in a time of three minutes and 41 seconds. (wikipedia.org)
  • time
  • The 1995 race saw the setting of the benchmark time of two minutes by a snail named Archie. (wikipedia.org)