Jon Amberg
Scott T. Cooper
Sandra K. Grunwald
Roger J. Haro
Mark P. Gaikowski
Blake W. Sauey
2016
<p><span>Limited information is available on the composition of digestive enzymes present in unionid mussels and the zebra mussel, </span><i>Dreissena polymorpha</i><span>. Available information is nearly exclusive to species used for culture purposes. A commercially available enzyme assay kit was used to examine the effect of habitat within an ecosystem, season, and species on the activities of several digestive enzymes. We used </span><i>Amblema plicata</i><span> to represent native unionids, </span><i>D.</i><span> </span><i>polymorpha</i><span>, and also </span><i>Hydropsyche orris</i><span> as an outgroup to compare differences between mussels and other macroinvertebrates. The data indicated that neither location nor time affect the activities of the digestive enzymes tested; species was the only factor to affect the activity. Differences were found mostly between four enzymes: naphthol-AS-BI-phosphohydrolase, acid phosphatase, alkaline phosphatase, and β-galactosidase.</span></p>
application/pdf
10.1080/02705060.2015.1132485
en
Taylor and Francis
Digestive physiology comparisons of aquatic invertebrates in the Upper Mississippi River Basin
article