In this study 883 specimens of the woundfin minnow (Plagopterus argentissimus Cope) from the Virgin River in Utah, were weighed and measured. Ratios of body measurements to standard length, and gonad weight to total weight were calculated. From the gonad weight:total weight ratios it was determined that woundfins spawn during a period from April through June, and that the first significant gonad development is during the third year of life. Several body proportions such as, snout length, gape, upper jaw length and peduncle depth grew nearly isometrically. Growth of other body proportions was more or less allometric. Head length, body depth and mouth length showed gradual changes. Pectoral fin length, eye length and total length showed rather marked allometry. The ratio of dorsal fin height to dorsal fin length also showed rather marked allometry.
College and Department
Life Sciences; Plant and Wildlife Sciences
BYU ScholarsArchive Citation
Peters, Edward James, "Changes with growth in selected body proportions of the woundfin minnow (Plagopterus argentissimus cope: Cyprinidae)" (1970). Theses and Dissertations. 7847.