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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.
Snail densities were reduced by 80-90% on the oil covered salt marsh edges and 50% in the marsh interior. [13] The major loss of adult snails resulted in a reduced mean snail size in salt marshes. It was originally projected that it would take about 3–5 years for the L. irrorata population density to recover from the oil spill. [ 13 ]
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 ...
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.
The marine snail Norrisia norrisii is a medium-sized gastropod mollusk within the family Tegulidae. [2] It has several common names, including Norris's top snail, Norris's topsnail, norrissnail, [3] smooth brown turban snail, or kelp snail.
There are many reasons why underwater archaeology can make a significant contribution to our knowledge of the past. In the shipwreck field alone, individual shipwrecks can be of significant historical importance either because of the magnitude of loss of life (such as the Titanic) or circumstances of loss (Housatonic was the first vessel in history sunk by an enemy submarine).