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Ultrasonic algae control is a commercial technology that has been claimed to control the blooming of cyanobacteria, algae, and biofouling in lakes, and reservoirs, by using pulsed ultrasound. [ 6 ] [ 7 ] The duration of such treatment is supposed to take up to several months, depending on the water volume and algae species.
It has several common names, including Norris's top snail, Norris's topsnail, norrissnail, [3] smooth brown turban snail, or kelp snail. It was first described by G.B. Sowerby I under the name Trochiscus norrisii (in honour of the naturalist Thomas Norris). [1] It is the only species in the genus Norrisia. [4] [5] [6]
Gastropods (snails and slugs) as the largest taxonomic class of the mollusca are very diverse: the group includes carnivores, herbivores, scavengers, filter feeders, and even parasites. In particular, the radula is often highly adapted to the specific diet of the various group of gastropods.
Derinkuyu (Turkish pronunciation: [derˈinkuju]) [a] [b] also known as Elengubu, is an ancient multi-level underground city near the modern town of Derinkuyu in Nevşehir Province, Turkey, extending to a depth of approximately 85 metres (280 ft).
The snail is usually 4–6 mm in length in the Great Lakes, but grows to 12 mm in its native range. [ 4 ] [ 5 ] [ 6 ] It is an operculate snail, with a 'lid' that can seal the opening of its shell. The operculum is thin and corneus with an off-centre nucleus from which paucispiral markings (with few coils) radiate.
Costasiella kuroshimae is a selective feeder of algae from the genus Avrainvillea, [5] from which it sequesters chloroplasts into its own cells, retaining them for short-term photosynthesis. Even in the absence of active photosynthesis, chloroplasts provide a nutrient storage or "larder" that facilitates the survival of the slug without food ...
These snails are sometimes viewed as pests in aquarium tanks with fish, because the snails create waste, reproduce very often, and are very hard to remove completely. However, some aquarium owners deliberately choose to add these freshwater pond snails to their tank because the snails will eat uneaten fish food, algae and waste, as well as ...
In the aquarium trade, the striped shell of this species has caused it to be known as the tiger snail, zebra snail, or zebra nerite. (The name zebra nerite is however misleading, because there are several species of nerite that have that common name, including Puperita pupa , a small marine nerite from the tropical western Atlantic.)