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The vertical distributions and spawning site choices of red and yellow bluefin killifish Lucania goodei colour morphs
Author(s) -
Chang ChiaHao,
Schult Jessica E.,
Sanders Jonathan,
Liu ShihHui,
Fuller Rebecca C.
Publication year - 2018
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.13661
Subject(s) - spawn (biology) , biology , killifish , fishery , cyprinodontiformes , zoology , ecology , fish <actinopterygii>
A genetic colour polymorphism is present in bluefin killifish Lucania goodei , where red and yellow anal‐fin morphs coexist in clear springs, but the source of balancing selection is unknown. In a field study, vertical distributions did not differ between the morphs and there was little evidence that light environments differed qualitatively over the 200 cm at which fish were collected. A greenhouse study showed that both morphs preferred to spawn at shallow depths and hence vertical distribution and spawning site choice are unlikely to explain the maintenance of the colour polymorphism.