Eggs of (Furrow, 1935)measure 0.25 mm by 0.37 m. Four to eighteen eggs are deposited in a green gelationous capsule, and have taken 12 to 15 days to hatch in July and August. Under summer conditions, time from fertilization to maturity may take up to four months.
Maximum densities in a northern Michigan population were recorded at approximately 30 snails per square meter and 50 snails per square meter at depths of 10 and 12 feet, respectively. (Burch and Jung, 1992; Pace, et al., 1979)is usually found by aquatic vegetation.
In general, freshwater snails graze on algae and are prey items for fish, water birds, and crayfish. Freshwater snails are also often intermediate hosts for trematodes. (Burch and Jung, 1992; Burch, 1989)
There are no known positive effects ofon humans.
There are no known adverse effects ofon humans.
does not currently have any conservation status.
Renee Mulcrone (author), Special Projects, Angela Miner (editor), Animal Diversity Web Staff.
living in the Nearctic biogeographic province, the northern part of the New World. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico.
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
uses smells or other chemicals to communicate
animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature
mainly lives in water that is not salty.
An animal that eats mainly plants or parts of plants.
having a body temperature that fluctuates with that of the immediate environment; having no mechanism or a poorly developed mechanism for regulating internal body temperature.
having the capacity to move from one place to another.
the area in which the animal is naturally found, the region in which it is endemic.
reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.
breeding is confined to a particular season
remains in the same area
offspring are all produced in a single group (litter, clutch, etc.), after which the parent usually dies. Semelparous organisms often only live through a single season/year (or other periodic change in conditions) but may live for many seasons. In both cases reproduction occurs as a single investment of energy in offspring, with no future chance for investment in reproduction.
uses touch to communicate
that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).
uses sight to communicate
Burch, J. 1989. Freshwater snails of North America. Hamburg, Michigan: Malacological Publications.
Burch, J., Y. Jung. 1992. Freshwater Snails of the University of Michigan Biological Station Area. Walkerana, 6/15: 1-218.
Cordeiro, J., K. Jurist. 2013. "Valvata tricarnata" (On-line). Nature Serve Explorer. Accessed September 25, 2013 at www.natureserve.org.
Dillon, R., B. Watson, T. Stewart, W. Reeves. 2006. "Valvata tricarnata (Say 1817)" (On-line). The freshwater gastropods of North America. Accessed June 26, 2013 at http://www.fwgna.org/species/valvatidae/v_tricarinata.html.
Foltz, S. 2013. "Conservation Planning Documents, Species Fact Sheets, Snails and Slugs (Gastropoda): , Three ridge valvata" (On-line). U.S. Forest Service, Interagency Special Status /Sensitive Species Program (ISSSSP). Accessed June 28, 2013 at http://www.fs.fed.us/r6/sfpnw/issssp/planning-documents/species-guides.shtml.
Furrow, C. 1935. Development of the hermaphrodite genital organs of Cell and Tissue Research, 22/3: 282-304..
Geraerts, W., J. Joosse. 1984. Freshwater snails (Basommatophora). Pp. 141-207 in A Tompa, N Verdonk, J van den Biggelaar, eds. The Mollusca, Vol. 7, reproduction. London: Academic Press, Inc.
Pace, G., E. Szuch, R. Dapson. 1979. Depth distribution of three gastropods in New Mission Bay, Lake Michigan. Nautilus, 93: 1-36. Accessed October 24, 2013 at http://archive.org/stream/nautilus93amer/nautilus93amer_djvu.txt.