Snails in shell

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(september , ) simplified version of the man and mollusc article : simplified in that some of the latin scientific terminology has been written in layman's terms and some areas have been condensed so that it is possibly easier to digest by younger viewers. this article has not been reworked, so kids,

the odessa-oreo files : oreo and odessa, two pet snails penpals talk about the pros, cons and legalities of keeping snails as pets. we, avril and joyce - the owners of the two pet snails, hope you enjoy this article and we hope that these fun pages help to educate the public as to being responsioble...

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respiration respiratory system overview d anatomy digestion senses nerves respiration circulation reproduction other shell pomacea haustrum ,one of the larger apple snails, with extended siphon. the respiratory system of the apple snail is highly adapted to tropical waters, which once in a while dry

up. this change in water availability is reflected in the apple snails respiration system: a combination of both a gill and a lung . the arise of the lung in apple snail can be explained by the following conditions: low oxygen levels: the oxygen (o ) levels in tropical pools can become very low due to...

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(picture not licenced under creative commons) shell : globose; shell opening (aperture) large, oval, large and deep umbilicus; - mm wide, - mm high. colour: yellow to green with reddish streaks, dark spiral bands. operculum: body: pale grey foot, with black pigment on the upper side of the body. eggs

: the white to slightly pinkish eggs are laid on emerging stems of vegetation. the clutches of to eggs, are losely packed together. compared with mmany other pomacea species, the eggs of pomacea paludosa are relatively big, about to mm diameter. the young snails appear after or more weeks and drop into...

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photographs, apple snail varia, apple snail varia a photograph of a pomacea diffusa shell , cut in half. osphradia near the opening of the lung (pomacea diffusa ). eye at the base of a tentacle (pomacea diffusa ). slow progressed shell erosion (pomacea diffusa (bridgesii) ). severely damaged shell (

marisa cornuarietis ). shell-growth problem due to damaged mantle edge ( pomacea diffusa ). the heart of pomacea canaliculata in action. marisa cornuarietis is not selective when it comes to a mating partner and mounts other species as well (in this case a pomacea flagellata snail). sex differences in...

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the aquarium trade. pomacea bridgesii is rather large ( mm shell height and more), while pomacea diffusa is much smaller, has a much more pronounced spire and a darker shell colour. shell : the shell of this apple snails species has about to whorls. the most obvious characteristic of the shell are the

square shoulders (flat at the top of the whorls) and almost ° sutures. the shell opening (aperture) is large and oval, the umbilicus is large and deep. the size of the shell varies from - mm wide and - mm high. the spire is high and sharp, hance the often used name: spike-topped apple snail. the colour...

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diamonds about pearls about gemstones about watches jewellery design about about sargisons our services our people shop video hand made process video contact home : about pearls about pearls origin of pearls pearls are formed by sea mussels (oysters), some freshwater mussels and occasionally, by some 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...

https://www.sargisons.com.au/content-pages/about-pearls

. as one can see at the menu structure above, there is quite a lot to tell about the embryology of apple snails. however, it will take some time to write the text, make illustration and pictures... the embryotic development of apple snails. in this case of marisa cornuarietis as the embryos in this species

the water. the eggs come out of the snail's body, one by one in a long string that folds up in such way that the eggs are attached to each other in one clutch. at this stage the eggs are small and have a white, translucent appearance. marisa cornuarietis depositing the eggs. day the eggs slowly enlarge...

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photographs of cultivated apple snails, cultivated apple snails female depositing eggs (pomacea canaliculata ). marisa cornuarietis , with a sinistral one at the right. pomacea diffusa . marisa cornuarietis , depositing the eggs. floating snail. although often suspected to be a sign of illness, it's

part of the normal behaviour ( pomacea canaliculata ). breathing marisa cornuarietis . note the short siphon in this species. marisa cornuarietis with the penis sheath extended after mating. an years old pomacea diffusa with eroded shell . crawling pomacea diffusa . except where otherwise noted, this...

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page & article listings personal pages a the pet zone learn the legalities of keeping snails; and read about others pet snail stories the oreo-odesssa files : learn about the worst snail pests in the world and be aware that keeping them as a pet is not always a good idea. meet oreo : site owner, avril

-march ; april-may : july ; october (oreo's story ends) meet clarence: toni and dawn have a saltwater aquarium in which they keep a rescued batillaria minima. i hope that you enjoy meeting " clarence " cone wars!: by don barclay: life and death in the aquarium!...

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photographs of 'wild' apple snails, other apple snails asolene (pomella) megastoma . note the fast increasing size with every whorl. asolene (pomella) megastoma . asolene (asolene) spixi . asolene (asolene) spixi . note how high the snail keeps its shell. asolene (asolene) spixi . asolene (asolene) spixi

photographs of 'wild' apple snails, other apple snails asolene (pomella) megastoma . note the fast increasing size with every whorl. asolene (pomella) megastoma . asolene (asolene) spixi . asolene (asolene) spixi . note how high the snail keeps its shell. asolene (asolene) spixi . asolene (asolene) spixi...

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