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Lepidurus arcticus

Lepidurus arcticus

L. arcticus is one of the most unique of the triops. Not only does it inhabit permanent fresh bodies of water, it is even known to coexist with arctic charr in some deep Norwegian, Greenland and Svalbard lakes. As a rule, though, it lives in high arctic lakes shallower than 6 meters – the lakes freeze completely during the colder seasons and this keeps fish from living there.  Scientists are actively studying the trophic relation between L. arcticus and the arctic charr in those lakes they coexist in to understand the delicate ecology better.

Major species

Lepidurus arcticus

Subspecies

none

Range

  • Asia (Northern)
    • Kuril Archipelago
    • Russia
  • Europe (Northern)
    • Norway
    • Greenland
    • Svalbard

Habitat

Cold temporary freshwater pools but is also found in streams and lakes where conditions allow

Temperature range

Minimum 4-7°C

Body ring/segments

26 – 28; 4 – 5 apodous

Appendages

41 – 46

Notable characters

The endites of the 1st thoracic appendage barely reach edge of the carapace, supra anal plate very small relative to other Lepidurus, second maxilla present

Reproduction

Bisexual (female biased) and hermaphroditic

My Triops (June 29, 2022) Lepidurus arcticus. Retrieved from https://mytriops.com/lepidurus-arcticus/.
"Lepidurus arcticus." My Triops - June 29, 2022, https://mytriops.com/lepidurus-arcticus/
My Triops July 10, 2020 Lepidurus arcticus., viewed June 29, 2022,<https://mytriops.com/lepidurus-arcticus/>
My Triops - Lepidurus arcticus. [Internet]. [Accessed June 29, 2022]. Available from: https://mytriops.com/lepidurus-arcticus/
"Lepidurus arcticus." My Triops - Accessed June 29, 2022. https://mytriops.com/lepidurus-arcticus/
"Lepidurus arcticus." My Triops [Online]. Available: https://mytriops.com/lepidurus-arcticus/. [Accessed: June 29, 2022]
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