Semisulcospira kurodai
Encyclopedia
Semisulcospira kurodai is a species
of freshwater snail
with an operculum
, an aquatic gastropod mollusk in the family Semisulcospiridae
.
Prior to 2009 was this species in the Pleuroceridae
.
The width of the shell is 10.3 mm in the first year, 11.0 in the second year, 11.5-11.8 mm in the third year and 12.0 mm in the fourth year in the laboratory.
The average size of the shell of a newborn snail varies according to the locality from 1.2 to 1.4 mm in width and from 1.9 mm to 2.1 mm in height of the shell.
Semisulcospira kurodai can live up to 4 years in the laboratory.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of freshwater snail
Freshwater snail
A freshwater snail is one kind of freshwater mollusc, the other kind being freshwater clams and mussels, i.e. freshwater bivalves. Specifically a freshwater snail is a gastropod that lives in a watery non-marine habitat. The majority of freshwater gastropods have a shell, with very few exceptions....
with an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
, an aquatic gastropod mollusk in the family Semisulcospiridae
Semisulcospiridae
Semisulcospiridae, common name semisulcospirids, is a family of freshwater snails, aquatic gilled gastropod mollusks with an operculum, in the superfamily Cerithioidea....
.
Prior to 2009 was this species in the Pleuroceridae
Pleuroceridae
Pleuroceridae, common name pleurocerids, is a family of small to medium-sized freshwater snails, aquatic gilled gastropod mollusks in the superfamily Cerithioidea.These snails have an operculum and typically a robust high-spired shell....
.
Description
The maximum width of the shell of Semisulcospira kurodai is 13.3 mm and 52.0 mm in height in the laboratory. The maximum weight of the animal is 7.7 g in the laboratory.The width of the shell is 10.3 mm in the first year, 11.0 in the second year, 11.5-11.8 mm in the third year and 12.0 mm in the fourth year in the laboratory.
Life cycle
The female has 17-72 embryos in its brood pouch. One female can give a life to 62-79 newborn snails in the laboratory.The average size of the shell of a newborn snail varies according to the locality from 1.2 to 1.4 mm in width and from 1.9 mm to 2.1 mm in height of the shell.
Semisulcospira kurodai can live up to 4 years in the laboratory.
Further reading
Goto T. (1994). "岐阜県のクロダカワニナ [Semisulcospira kurodai Kajiyama & Habe in Gifu Prefecture]". ちりぼたん The Chiribotan 24(3-4): 100-101. CiNii- Oniwa K. & Kimura M. (1986). "Genetic variability and relationships in six snail species of the genus Semisulcospira". The Japanese journal of genetics 61(5): 503-514. CiNii. doi:10.1266/jjg.61.503 Takami A. (1995). "31. クロダカワニナの産仔数, 新生貝の大きさと成長(平成 6 年度大会(豊橋)研究発表要旨) [31. Number, size and growth of newborns in Semisulcospira kurodai under the laboratory conditions (Abstracts of Papers Presented at the 1995 Annual Meeting in Toyohashi City)]". Venus 54(1): 96. CiNii Takami A. (1991). "カワニナ属 3 種の産仔頻度, 産仔数と新生貝の大きさ [The Birth Frequency, Number and Size of Newborns in the Three Species of the Genus Semisulcospira (Prosobranchia: Pleuroceridae)]". Venus 50(3): 218-232. CiNii.