Estimating the Ages of Mountain SuckerCatostomus platyrhynchusfrom the Black Hills: Precision, Maturation, and Growth
| Autor: | Jacob R. Krause, Jason J. Breeggemann, Luke D. Schultz, Katie N. Bertrand, Brian D. S. Graeb, Cari-Ann Hayer |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Western North American Naturalist. 74:299-310 |
| ISSN: | 1944-8341 1527-0904 |
| DOI: | 10.3398/064.074.0305 |
| Popis: | Although mountain sucker Catostomus platyrhynchus is considered secure across its range, it has declined in parts of its range and is listed in South Dakota as a species of greatest conservation need. To our knowledge, no research has identified which calcified structure provides the most precise age estimates for mountain sucker, and little is known about mountain sucker population dynamics. To identify which structure provided the most precise age estimates, we compared age estimates from scales, sectioned pectoral fin rays, whole asteriscus otoliths, and polished asteriscus otoliths collected from 110 mountain sucker from 2 creeks in the Black Hills of South Dakota. Additionally, we quantified growth, age, and size at maturation for one population of mountain sucker in the Black Hills. Polished otoliths had the greatest precision of the 4 structures used, followed by sectioned pectoral fin rays. Mountain sucker reached an average size of 100 mm total length (TL) during their fourth growing se... |
| Databáze: | OpenAIRE |
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