(pomacea diffusa). the first was aimed at determining growth performance and adaptability with a natural vegetable source (dehydrated lettuce, d ) compared with a composite diet of high content of fishmeal (d = ). snails of three different shell lengths (s ± , s = ± , and s = ± mm) were fed at two different...
insularum . shel l: the shell of this apple snail species is globose and relatively heavy (especially in older snails). the to whorls are separated by a deep, indented suture (hence the name 'canaliculata' or 'channeled'). the shell opening (aperture) is large and oval to round. males are known to have...
attached to the inside of the shell and enveloping the head-neck and the gills-lung area of the body. the top of the mantle cavity (the part away from the shell opening or the posterior part) is separated in two chambers, the left one forms the lung and right one contains the gill (ctenidium) with the...
base, but with makes a sharp angle at top. the size of these snails varies from to mm high depending on the conditions. the umbilicus is closed. the shell has a light base colour (gray-brown to greenish-blue), a bit stone-like yellow with faint, non-contineous brown spiral bands. operculum: the operculum...
could be classified in a seperate genus: turbinicola (annandale & prashad, ) or that it's more justified to create a sub-genus pila (turbinicola). the type species is turbinicola saxea (annandale & prashad, ). older pila snails have a calcified inside of the operculum (shell door). this is characteristic...
. remember, however, that there is not much known about colours in apple snails, and that this page is more a sort of hypothesis of how the possible mechanisms could work. play with the genes: in the interactive example below, one can switch on and off the colour genes. these genes are available in at...
large number of variations are known. the interior of the shell is dull reddish with very faint spiral bands visible, white at the columella. operculum: the operculum is calcified at the inside (part attached to the snail). body: ?...
has a breathing siphon , although much shorter than in the pomacea species. pomacea canaliculata , in the back pomacea diffusa . pomacea canaliculata , yellow variant. marisa cornuarietis ....
globose and relatively thick (especially in older snails) with a low spire. the to whorls are separated by a sligthly indented suture. the shell opening (aperture) is large and oval to round, sometimes ligthly reflected. the umbilicus is large and deep. the size of these shell varies from to mm wide...
mm). the shell is oval in shape, with medium sized spire. the umbilicus is very narrow or even closed. the surface of the shell is slightly rough the colour is light brown with or without very fanit dark bands. the inside of the shell is very dark brown to black. operculum: asolene (asolene) sp. photographed...