Primitive Oncorhynchus Flashcards
How do you tell a JUVE cutty from others?
maxillary past eye, red or orange hyroid at 8-10cm.
q
what are the four major lineages of cutthroat?
coastal, westslope, lahoation, yellowstone
How did four lineages occur for cutthroat?
long isolation of populations (up to a million years)
what type of species is the cutthroat?
polytypic, NOT a species complex
Do cutthroat occur outside of North America?
technically no, but MAY exist in kamchatka, only know species.
Cutthroat Refugium
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What are cutthroat’s three general life-history forms?
non-migratory freshwater resident, migratory freshwater resident, sea run form (anadromous).
Why are cutthroat the most imperiled of all the pacific salmon?
introduction of RBT (hybredize), introduced lake trout (eat them). Also, habitat destruction
