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Life Cycles of the Freshwater Mysid Shrimp Mysis relicta Reared at Two Temperatures
Author(s) -
Berrill Michael,
Lasenby David C.
Publication year - 1983
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1983)112<551:lcotfm>2.0.co;2
Subject(s) - mysidacea , shrimp , moulting , biology , sexual maturity , crustacean , ecology , zoology , fishery , larva
Abstract To assess the role that temperature may play in determining the life cycle of Mysis relicta, we cultured newly hatched juveniles at 4 C and 8 C in the presence of a surfeit of food. Mysids first reached sexual maturity after 8 months at 8 C after molting 12–13 times. Mysids cultured at 4 C molted four to five fewer times in the same 8 months, yet grew the same amount per molt as the mysids cultured at 8 C. We predict that mysids that live in water of at least 8 C during the summer of their first year will complete their life cycle in 1 year, whereas mysids growing in water colder than 4 C during their first summer will require 2 years to complete their life cycle. Received July 12, 1982 Accepted April 9, 1983