Journal
JOURNAL OF MORPHOLOGY
Volume 276, Issue 4, Pages 458-469Publisher
WILEY
DOI: 10.1002/jmor.20353
Keywords
morphology; otolith; wavelet; ecology; Sebastes; Northeastern Pacific
Categories
Funding
- Research Project AFORO3D of the Spanish Government [MICIN CTM2010-1970]
- Government of Spain
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Sagitta otolith shape was analysed in twenty sympatric rockfishes off the southern California coast (Northeastern Pacific). The variation in shape was quantified using canonical variate analysis based on fifth wavelet function decomposition of otolith contour. We selected wavelets because this representation allow the identifications of zones or single morphological points along the contour. The entire otoliths along with four subsections (anterior, ventral, posterodorsal, and anterodorsal) with morphological meaning were examined. Multivariate analyses (MANOVA) showed significant differences in the contours of whole otolith morphology and corresponding subsection among rockfishes. Four patterns were found: fusiform, oblong, and two types of elliptic. A redundancy analysis indicated that anterior and anterodorsal subsections contribute most to define the entire otolith shape. Complementarily, the eco-morphological study indicated that the depth distribution and strategies for capture prey were correlated to otolith shape, especially with the anterodorsal zone. (C) 2014 Wiley Periodicals, Inc.
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