Variations of body geometry in Brycon henni (Teleostei: Characiformes, Bryconidae) in different rivers and streams.
Landmark-based geometric morphometrics were used to evaluate the effect of flow and depth in the water column on the body size and shape of Brycon henni from river and stream populations. The dendrogram showed that stream populations clustered apart and showed significantly smaller centroid size and narrower bodies than river populations, indicating a role for flow and depth on whole body morphometric variation. The results are concordant with morphometric variation described in other fish species and provide the first insights into phenotypic variation in natural populations of B. henni.
Universidad Nacional de Colombia, Sede Medellín, Facultad de Ciencias, Escuela de Biociencias, Calle 59A No 63-20, Bloque 19, A Laboratorio 310, Medellín, 050034, Colombia.
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N
Restrepo-Escobar
Universidad Nacional de Colombia-Sede Medellín, Facultad de Ciencias Agrarias-Postgrado en Bosques y Conservación Ambiental-Departamento de Ciencias Forestales, Calle 59A No. 63-20, Bloque 20, Oficina 211, Medellín, 050034, Colombia.
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JC
Hurtado-Alarcón
Universidad Nacional de Colombia-Sede Medellín, Facultad de Ciencias Agrarias-Postgrado en Bosques y Conservación Ambiental-Departamento de Ciencias Forestales, Calle 59A No. 63-20, Bloque 20, Oficina 211, Medellín, 050034, Colombia.
N J
NJ
Mancera-Rodríguez
Universidad Nacional de Colombia, Sede Medellín, Facultad de Ciencias, Escuela de Biociencias, Calle 59A No 63-20, Bloque 19, A Laboratorio 310, Medellín, 050034, Colombia.
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EJ
Márquez
D000818:Animals; D049628:Body Size; D060125:Characiformes / Q000033:anatomy & histology* / Q000254:growth & development; D005260:Female; D008297:Male; D045483:Rivers; D012727:Sex Characteristics; D014872:Water Movements
diversity; neotropical freshwater fish; phenotypic variation