Pachydrobiella brevis

Pachydrobiella brevis is a species of freshwater snail, an aquatic gastropod mollusk in the family Pomatiopsidae.

Pachydrobiella brevis
Drawing of apertural view of the shell of Pachydrobiella brevis
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily:
Rissooidea
Family:
Pomatiopsidae
Subfamily:
Triculinae
Tribe:
Jullieniini[1]
Genus:
Pachydrobiella

Thiele, 1928[2]
Species:
P. brevis
Binomial name
Pachydrobiella brevis
(Bavay, 1895)[3]
Synonyms[1]

Pachydrobia brevis Bavay, 1895

Pachydrobiella brevis is the only species in the genus Pachydrobiella.[1]

Distribution

The distribution of Pachydrobiella brevis includes Khong Island in the Mekong River, southern Laos.[1] The type locality is Khong Island.[1] This species is probably endemic to the Khong Island region.[1]

Drawing of abapertural view of the shell of Pachydrobiella brevis

Description

The shape of the shell is ovate-conic.[1] The shell is thick and smooth.[1] The smooth shell is unique in the tribe Jullieniini.[1] The outer lip is thick with growth lines.[1]

The width of the shell is 2.5 mm.[3] The height of the shell is 2.2–3.6 mm.[1]

Thiele (1928)[2] and Brandt (1970) made a drawing showing smooth teeth in the radula, but Davis (1979) showed multiserrate teeth in the radula.[1]

Ecology

Pachydrobiella brevis lives primarily in freshwater habitats that lack a current or have only a slight current.[1] However this species sometimes or rarely also lives also in places where the current is moderate or strong all the way to whitewater.[1]

This snail probably feeds on algae on stones.[1]

gollark: It also carries things like proteins used for self-repair and building new things.
gollark: This is silly. The body is much more messy and complicated than human machines with actual design. Blood carries lots of "data" too in the form of hormones and immune system hardware.
gollark: Tiger Lake goes up to 96EUs, if I IIRC.
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gollark: Similar-looking images are considered reposts. I tested it a bit, but it's difficult to get around it without making an image look substantively different.

References
  1. Davis G. M. (1979). "The origin and evolution of the gastropod family Pomatiopsidae, with emphasis on the Mekong river Triculinae". Academy of natural Sciences of Philadelphia, Monograph 20: 1-120. ISBN 978-1-4223-1926-0.
  2. Thiele (1928). Zool. Jahrb., Syst. 55: 379.
  3. Bavay A. (1895). "Coquilles nouvelles, provenant de récoltes de M. L. Levay, dans les rapides de Haut-Mékong, pendant la campagne du Massie, 1893-1894-1895". Journal de Conchyliologie 43: 82-94. Plates 5-6.
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