| Neritona granosa | |
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| Species: | N. granosa |
| Binomial name | |
| Neritona granosa (Sowerby I, 1825) | |
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Neritona granosa is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites. [2]
These snails live in streams and once they find an area to take a stop, they stay in that district. [3] Due to this idea, these snails thrive off of continually flowing streams. [3] Often times, these snails are found in the lower or middle stream reaches. Hīhīwai can be found all throughout Hawaii, however as of lately, their range of habitats have been continuously deteriorating because of stream modifications. [4] Currently, the snails appear to be compacted to fewer than 50 streams. [4]
Neritona granosa has a shell with a bumpy surface. [4] There are two different colors on the shell: the outside of the shell is black, and the inside of the shell is orange. [4]
Neritina granosa lives in streams. This species has marine larvae that migrate into and up streams after a period of oceanic dispersal. Most likely, the planktonic larvae of this neritid snail disperse across the oceanic expanses that separate the main Hawaiian Islands, and thus it can colonize streams on any or all of these islands. [5]
The Hawaiian name of the species is “wī” and “hīhīwai”. [4] During ancient Hawaiian times, these snails functioned as a great source of food. [4] Shells were also sold, and many of these shells came from the island of Molokai. [4]
To this day, the Neritona granosa may sometimes appear in the Honolulu fish markets for around $3.60 a pound. [4]
The International Union for Conservation of Nature has ranked N. granola as vulnerable to extinction. [1] It likely does not occur in more than ten locations and is in decline. It historically occurred in Kauai, Maui, Molokai, Hawaii and Oahu but is presently confirmed from Maui, Hawaii, Kauai and Oahu. Major threats include obstruction of natural stream flow and inundation by saline water. [1]
Hīhīwai may grow up to 9mm in a few months during its early life. [3] Afterwards the growth rate takes a leap back slowing down the rapidly growing snails. [3] They then shall grow up to a length of 2 inches. [6] With this information the conclusion is that the snail has a lifespan of 6–10 years. [3]
Located about 2300 miles (3680 km) from the nearest continental shore, the Hawaiian Islands are the most isolated group of islands on the planet. The plant and animal life of the Hawaiian archipelago is the result of early, very infrequent colonizations of arriving species and the slow evolution of those species—in isolation from the rest of the world's flora and fauna—over a period of at least 5 million years. As a consequence, Hawai'i is home to a large number of endemic species. The radiation of species described by Charles Darwin in the Galapagos Islands which was critical to the formulation of his theory of evolution is far exceeded in the more isolated Hawaiian Islands.
Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum.
Theodoxus fluviatilis, common name the river nerite, is a species of small freshwater and brackish water snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Newcomb's snail is a species of air-breathing freshwater snail, a gastropod mollusk in the family Lymnaeidae. This species is endemic to Hawaii, in the United States. Its natural habitat is rivers. It is threatened by habitat loss.
Neritina, is a genus of small aquatic snails with an operculum in the family Neritidae, the nerites. They are as well marine, as brackish water, and sometimes freshwater gastropod mollusks
Vittina natalensis, common name spotted nerite, is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Hyposmocoma chilonella is a species of moth of the family Cosmopterigidae. It was first described by Lord Walsingham in 1907. It is endemic to the Hawaiian islands of Kauai, Oahu, Maui, Molokai and Hawaii.
Neritina pulligera, common name the dusky nerite, is a species of freshwater snail, a gastropod mollusk in the family Neritidae.
Peridroma cinctipennis is a moth of the family Noctuidae. It was first described by Arthur Gardiner Butler in 1881. It is endemic to the Hawaiian islands of Kauai, Oahu, Molokai, Maui and Hawaii.
Clithon faba is a species of brackish water snail with an operculum, a nerite. It is an aquatic gastropod mollusc in the family Neritidae, the nerites.
Neritodryas is a genus of freshwater snails, ; they are gastropod mollusks in the family Neritidae, the nerites.
Theodoxus jordani is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Clithon spinosum is a species of brackish water and freshwater snail with an operculum, a nerite. It is an aquatic gastropod mollusk in the family Neritidae, the nerites.
Clithon corona is a species of brackish water and freshwater snail with an operculum, a nerite. It is an aquatic gastropod mollusk in the family Neritidae, the nerites.
Neritina asperulata is a species of a marine and freshwater snail, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Neritona juttingae, also known as the King Koopa Nerite Snail, is a species of a freshwater snail, an aquatic gastropod mollusk in the family Neritidae.
Vittina turrita is a species of aquatic snail, a gastropod mollusk in the family Neritidae.
Neritona, is a genus of small aquatic snails with an operculum, marine, brackish water, and sometimes freshwater gastropod mollusks in the family Neritidae, the nerites.
Neripteron vespertinum is a species of freshwater snail, an aquatic gastropod mollusc in the family Neritidae.
This article incorporates public domain text (a public domain work of the United States Government) from reference. [5]
