(flat shell). apple snails have a dextral shell (shell opening at the right like in the picture above) except the apple snails from the genus lanistes who have a sinistral shell (shell opening at the left), although there are reports of sinistral animals in the other genera (see the literature : cazzaniga...
individual base, but clear when measuring large amount of snails (in other words, it's possible to show the difference based on statistics). in some species however, the difference between male and female are very obvious in the adult snails. for example in pomacea flagellata flagellata , the male has...
the lake. also, lanistes solidus is endemic to lake malawi, while lanistes ellipticus can be found at many places in central and southern africa. nevertheless, lanistes solidus could be considered a heavier, lacustrine (lake specific) form of lanistes ellipticus. shell : lanistes solidus is a rather...
, they are all soft on the inside. they are one of the largest animal groups with about species worldwide which make up about a quarter of all marine animals. in australia there about species. molluscs are found in marine, freshwater and land habitats. there are great differences in the size, structure...
have a globose shell with an oval shell opening (aperture). the spire is rather short and the umbilicus narrow to nearly closed. the surface of the shell is smooth. the colour varies from bright green to orange-brown with reddish spiral bands. the internal part of the shell is yellowish with a tinge...
a basic guide to other common freshwater snails . bio-agent apple snails as a biological agent to control the population of disease transmitting snails?...
° angle) sutures. in some occasions, the sutures are almost absent, resulting in a smooth spire. the shell lip is often slightly reflected and the umbilicus is narrow and deep. size: - mm wide, - mm high (only slightly higher then wide). there are many variations known of this subspecies, mainly variations...
older literature), superfamily ampullarioidae, family ampullariidae (apple snails). the whole apple snail family (ampullariidae) is divided in (or , depending of the authority followed) genera [ click here to see their characteristics ] and contains about different species*. however, much work has to...
(picture not licenced under creative commons). apple snails are well edible and are often considered a protein rich delicacy. consuming these snails is therefore an interesting option in those area's where they have become a pest and treat for the rice and taro production. in such cases, eating these...
not be a problem as these differences are relatively small. movies (mpeg ): - travel through snail slices (pomacea canaliculata ) ( kb) note that the anatomy of apple snails can not be applied on all other snail families. close relatives as the viviparidae snails do have a somewhat similar anatomy,...