is as far as known only existing in the apple snail family. nevertheless, not all apple snails lay their eggs above the water, the snails from the genera asolene, felipponea, lanistes, marisa and possibly also afropomus and saulea lay their eggs in gelatinous eggs masses in the water on aquatic vegetation...
is as far as known only existing in the apple snail family. nevertheless, not all apple snails lay their eggs above the water, the snails from the genera asolene, felipponea, lanistes, marisa and possibly also afropomus and saulea lay their eggs in gelatinous eggs masses in the water on aquatic vegetation...
° 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...
a basic guide to other common freshwater snails . bio-agent apple snails as a biological agent to control the population of disease transmitting snails?...
. when an irritant, such as a grain of sand, intrudes into the shell of the mussel and the mantle, or the interior of the mantle, the mussel coats the irritant with layers of the same substance that is used to create the shell. mother-of-pearl (nacre) which is mainly calcium carbonate and an organic...
(picture not licenced under creative commons) shell : the shell is relatively thick and the to whorls are seperated with indented sutures. the shell opening is round shell and the umbilicus is very wide and deep umbilicus. the shells is wide and has a with low spire. the lip is somewhat thickened. the...
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,...
adaptation is reflected in their life style : moderately amphibious and being equipped with a shell door enabling the snail to close its shell (to prevent drying out while hiding in the mud during dry periods). a typical adaptation of apple snails is the combination of a branchial respiration system...
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