Discrimination of Mediterranean mussel (Mytilus galloprovincialis) feces in deposited materials by fecal morphology
2017
Akiyama, Yoshihiro B. | Iseri, Erina | Kataoka, Tomoya | Tanaka, Makiko | Katsukoshi, Kiyonori | Moki, Hirotada | Naito, Ryoji | Hem, Ramrav | Okada, Tomonari
In the present study, we determined the common morphological characteristics of the feces of Mytilus galloprovincialis to develop a method for visually discriminating the feces of this mussel in deposited materials. This method can be used to assess the effect of mussel feces on benthic environments. The accuracy of visual morphology-based discrimination of mussel feces in deposited materials was confirmed by DNA analysis. Eighty-nine percent of mussel feces shared five common morphological characteristics. Of the 372 animal species investigated, only four species shared all five of these characteristics. More than 96% of the samples were visually identified as M. galloprovincialis feces on the basis of morphology of the particles containing the appropriate mitochondrial DNA. These results suggest that mussel feces can be discriminated with high accuracy on the basis of their morphological characteristics. Thus, our method can be used to quantitatively assess the effect of mussel feces on local benthic environments.
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