Round Spine Tadpole Shrimp - Lepidurus couesii
The Round Spine Tadpole Shrimp is typically associated with plains, intermountain valley, and high desert environments, but it seems to occupy a wide range of habitats in Montana. It has been found in water bodies ranging from temporary marshes that do not fill every year to seemingly-permanent beaver ponds and in wetted habitats within aspen forests and ponderosa pine forest (Hossack et al. 2011).
Observations in Montana Natural Heritage Program Database
Number of Observations:
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
Does not migrate, restricted to the habitat it is inhabiting.
It has been found in water bodies ranging from temporary marshes that do not fill every year to seemingly-permanent beaver ponds and in wetted habitats including aspen forests and ponderosa pine forest (Hossack et al. 2011).
Mostly omnivorous or detritivorous feeding on benthic organic materials and living organisms within this material.
Notostracans, or tadpole shrimps, are omnivores living on the bottom of temporary pools and shallow lakes. They live in pools of water on every continent except Antarctica. They grow very quickly, and can reach adulthood in a week and live only a short time; up to 100 days. When their pools dry up, adult tadpole shrimp die. Their eggs, however, stop developing for a time. When they are watered again, they come to life, and new tadpole shrimp are hatched. This is because of a state known as diapause, where eggs can lie dormant for up to twenty years before hatching again.
- Literature Cited AboveLegend: View Online Publication
- Hossack, B.R., R.L. Newell, and D.E. Ruiter. 2011. New collection records and range extension for the caddisfly Arctopora salmon (Smith, 1969) (Trichoptera: Limnephilidae). The Pan-Pacific Entomologist. 87(3):206-208.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- B.R. Hossack, R.L. Newell and D.C. Rogers. 2010. Branchiopods (Anostraca, Notostraca) from protected areas of western Montana. Northwest Science. 81(1): 52-57.
- Additional Sources of Information Related to "Fairy Shrimp"