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5 results for “Trichomycterus areolatus”
Data from: Ontogenetic shape trajectory of Trichomycterus areolatus varies in response to water velocity environment
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Figure 1 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 1 - Location of sample sites of Trichomycterus areolatus populations located in two river basins from southern Chile. Bueno River basin: A Tijeral River, and B Huilma River; Biobío River basin: C Biobío River.
Figure 4 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 4 - Scatterplot for individual scores from Discriminant Function Analysis (DF1 on DF2) of three Trichomycterus areolatus populations from southern Chile according to 17 truss measurements derived from a truss network. Crosses indicate group centroids.
Figure 3 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 3 - Scatterplot for individual scores from Principal Component Analysis (PC1 on PC2) of three Trichomycterus areolatus populations from southern Chile according to 22 truss measurements derived from a truss network.
Figure 2 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 2 - Position of the anatomical landmarks used to measure the size of 22 morphological characters on Trichomycterus areolatus based on a truss network. Definition of each character and its classification according to body shape dimension covered by them was as follows: a Head length, 1–2 = ventral tip of the operculum to tip of the head, 2–4 = tip of the head to posterior margin of the head b Head depth, 1–4 = ventral tip of the operculum to posterior margin of the head, 3–4 = base of the pectoral fin to posterior margin of the head c Anterior body length, 1–3 = ventral tip of the operculum to base of the pectoral fin, 3–5 = prepelvic length; 4–5 = posterior margin of the head to base of the pelvic fin; 3–6 = base of the pectoral fin to anterior base of the dorsal fin; 4–6 = predorsal length d Middle body depth, 5–6 = base of the pelvic fin to anterior base of the dorsal fin, 5–8 = base of the pelvic fin to posterior base of the dorsal fin, 6–7 = anterior base of the dorsal fin to anterior base of the anal fin, 7–8 = anterior base of the anal fin to posterior base of the dorsal fin e Middle body length, 5–7 = base of the pelvic fin to anterior base of the anal fin, 6–8 = dorsal fin base length, 7–9 = anal fin base length f Posterior body length, 7–10 = anterior base of the anal fin to dorsal posterior margin of the caudal peduncle, 9–10 = posterior base of the anal fin to dorsal posterior margin of the caudal peduncle g Peduncle depth, 8–9 = anterior caudal peduncle depth, 10–11 = posterior caudal peduncle depth h Peduncle length, 8–10 = dorsal caudal peduncle length, 9–11 = ventral caudal peduncle length.
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