TY  - DATA
ID  - doi:10.5061/dryad.j7th2
T1  - Data from: The effects of age, sex, and habitat on body size and shape of the blackstripe topminnow, Fundulus notatus
AU  - Welsh DP
AU  - Zhou M
AU  - Mussmann SM
AU  - Fields LG
AU  - Thomas CL
AU  - Pearish SP
AU  - Kilburn SL
AU  - Parker JL
AU  - Stein LR
AU  - Bartlett JA
AU  - Bertram CR
AU  - Bland TJ
AU  - Laskowski KL
AU  - Mommer BC
AU  - Zhuang X
AU  - Fuller RC
Y1  - 2013/01/25/
N2  - Lake and stream habitats pose a variety of challenges to fishes due to differences in variables such as water velocity, habitat structure, prey community, and predator community. These differences can cause divergent selection on body size and/or shape. Here, we measured sex, age, length, and eight different morphological traits of the blackstripe topminnow, Fundulus notatus, from 19 lake and stream populations across four river drainages in central Illinois. Our goal was to determine whether size and shape differed consistently between lake and stream habitats across drainages. We also considered the effects of age and sex as they may affect size and morphology. We found large differences in body size of age 1 topminnows where stream fish were generally larger than lake fish. Body shape mainly varied as a function of sex. Adult male topminnows had larger morphological traits (with the exception of body width) than females, in particular longer dorsal and anal base lengths. Subtle effects of habitat were present. Stream fish had a longer dorsal fin base than lake fish. These phenotypic patterns may be the result of genetic and/or environmental variation. As these lakes are human-made, the observed differences, if genetic, would have had to occur relatively rapidly (within about 100 years).
KW  - morphology
KW  - lake
KW  - stream
KW  - fish
KW  - dimorphism
KW  - Fundulus notatus
JF  - Biological Journal of the Linnean Society
PB  - Dryad Data Repository
UR  - http://dx.doi.org/10.5061/dryad.j7th2
DO  - doi:10.5061/dryad.j7th2
ER  -