Comparative shell morphology of the zebra mussel, Dreissena polymorpha in the Drava River (Croatia)
| Autor: | Lajtner, J., Marušić, Z., Göran Klobučar, Maguire, I., Erben, R. |
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| Jazyk: | angličtina |
| Rok vydání: | 2004 |
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| Zdroj: | Göran Klobučar Scopus-Elsevier |
| Popis: | We examined the shell morphometrics of the zebra mussel (Dreissena polymorpha) collected from the system of the Dubrava hydro-electric power plant on the Drava river (Croatia). Study sites had different sediment types, depth, and physical and chemical conditions. Site 1 was the shallow of the Drava river, while sites 2 and 3 were located in the artificial Dubrava lake at depths of 3 and 8 m, respectively. A total of 1200 zebra mussels were collected. The following morphological variables were examined: shell length (SL), shell width (SW), shell height (SH) and shell mass (SM). In addition three different ratios were defined: SW/SL, SH/SL and SW/SH. Analysis of variance (ANOVA) and Duncan multiple comparison test were applied to test the differences of the ratios among the three sites and to determine which of them was significantly different from the others. The analysis showed that the ratios SW/SL and SW/SH differ significantly between all three sites (p |
| Databáze: | OpenAIRE |
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