| Autor: |
Santificetur César, R. M. Conversani Valéria, L. D. B. Rossi-Wongtschowski Carmen |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Frontiers in Marine Science, Vol 2 (2015) |
| ISSN: |
2296-7745 |
| DOI: |
10.3389/conf.fmars.2015.03.00197 |
| Popis: |
The Collection of Teleostei Fish Otoliths of the Southeastern-Southern of Brazil (COSS-Brasil) headquartered at the Oceanographic Institute, (IOUSP) contains 65 species of Perciformes included in 30 families. In order to spread the modus operandi of the adopted analysis for the main characteristics of the sagittae we presented the results obtained for the families Centropomidae, Acropomatidae and Gerreidae. The classification of the otoliths morphological features followed Assis (2004) and Tuset et al. (2008). Fifteen features were analyzed and after, the frequency of the different types was calculated within and among each length classes of 20 mm. Statistical differences were analyzed by multiple χ2 tests (p>.0.05). The morphometric analysis included circularity and rectangularity. The main characteristics of the Centropomidae sagittae were: Shape: elliptic to trapezoidal; Posterior region: oblique or round; Sulcus acusticus: position median; orientation horizontal; morphology heterosulcoid; colliculum heteromorphic; ostium elliptic or rectangular; cauda tubular strongly curved; Circularity: 15.41 - 27.78; Rectangularity: 0.70 - 0.76. For the Acropomatidae we found: Anterior region: peaked; Dorsal edge: lobed to sinuate or sinuate to entire; Ventral edge: sinuate to entire; Sulcus acusticus: position median; orientation ascending or horizontal; opening ostial; morphology heterosulcoid; colliculum heteromorphic; ostium funnel-like or elliptic; Circularity: 15.75 - 19.77; Rectangularity: 0.60 - 0.74. The main characteristics of the Gerreidae were: Shape: elliptic; Anterior region: angled-round or peaked-round; Sulcus acusticus: position median or supramedian; orientation descending or horizontal; opening ostial; morphology heterosulcoid; colliculum heteromorphic; ostium funnel-like; Circularity: 14.11 - 22.86; Rectangularity: 0.53 - 0.74. We are preparing a practical guide of all the species of the collection including morphological, morphometric, draws, photos and shape indices providing a complete guide of the teleost fishes’ otoliths from the South Atlantic. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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