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The eggs hatch in about six days and the veliger larvae are planktonic for up to six months before settling on the shallow seabed at a shell-length of about 1 mm (0.04 in). [2] In eastern Canada these juvenile snails have been recorded at a density of 1500 per square meter. [3]
The eggs hatch during the onset of the rains the following spring. Upon hatching, the juvenile snails immediately proceed to climb adjacent trees. Most nesting snails appear to be approximately 2 to 3 years old and are estimated to live for up to 6 years, with 2.11 years being the mean age for the Stock Island population at the time of Deisler ...
The snails can produce as many as two hundred offspring from one egg-laying event. Sometimes not all the eggs are fertilized so they do not all hatch. When they do hatch, the hatchlings run the risk of being eaten if they share an aquarium with fish. [5] Hatchling mystery snails will grow quickly if given an appropriate amount of food and calcium.
The first snails to hatch eat the shells of their eggs. This gives them calcium needed for their shells. They may then begin eating unhatched eggs. If the snail eggs are kept at the optimum temperature, 68 °F (20 °C) (for some varieties), and if none of the eggs lose moisture, most eggs will hatch within three days of each other.
The eggs hatch after 8–21 days. The newly emerged neonate will consume its own shell and that of its siblings. The snail reaches adult size in about six months, after which growth slows, but does not cease until death. Life expectancy is 3–5 years in the wild and 5–6 years in captivity, but the snails can live for up to 10 years. [25]
Once laid, the eggs take approximately two weeks to hatch, during which time the bright pink or orange coloration of the eggs fades. [23] First direct evidence (of all animals), that proteinase inhibitor from eggs of Pomacea canaliculata interacts as trypsin inhibitor with protease of potential predators, has been reported in 2010. [24]
The snail takes 30–40 days to hatch and is then considered young (before sexual maturity). Sexual maturity begins between 4 and 16 months after hatching. The snail is relatively fast moving at about 8 mm/s. [3] The snail has a light grey or brown body, with its lower tentacles being long and almost touching the ground.
Usually they lay 20-50 eggs in rotting wood or below decaying leaves. Eggs are white and flattened, measure about 1 mm and hatch after 10–30 days. These gastropods reach their maturity only in the second or third season and can live 2–3 years. [3] Unlike many terrestrial snails they do not have a sex dart. [4]