The vertical distributions and spawning site choices of red and yellow bluefin killifish Lucania goodei colour morphs. Issue 2 (21st September 2018)

• Record Type: Journal Article
• Authors: Chang, Chia‐Hao; Schult, Jessica E.; Sanders, Jonathan; Liu, Shih‐Hui; Fuller, Rebecca C.
• Is Part Of: Journal of fish biology. Volume 93:Issue 2(2018)
• Page Start: 396
• Page End: 400
• Publication Date: 2018-09-21
• Subjects: colour polymorphism -- Cyprinodontiformes -- depth -- Fundulidae -- light environment -- microhabitat; Fishes -- Periodicals; Fishes -- Great Britain -- Periodicals; 597
• DOI: 10.1111/jfb.13661
• Languages: English
• ISSNs: 0022-1112

Abstract

Abstract : 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.