文章基本信息

标题：Laboratory Measures of Filtration by Freshwater Mussels: An Activity to Introduce Biology Students to an Increasingly Threatened Group of Organisms
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作者：Michael J. Smith ; Julie J. Shaffer ; Keith D. Koupal 等
期刊名称：Bioscene
印刷版ISSN：1539-2422
出版年度：2012
卷号：38
期号：2
页码：10-15
语种：English
出版社：Association of College and University Biology Educators
摘要：Many aquatic organisms survive by filter feeding from the surrounding water and capturing food particles. We developed a laboratory exercise that allows students to measure the effects of filtering by fresh water mussels on water turbidity. Mussels were acquired from Wards Scientific and exposed to a solution of bakers yeast. Over a period of one to two hours, students measured changes in water clarity using miniature Secchi discs. The exercise has been used in a freshwater biology class at a state university. This exercise allows students to make hypotheses, gather data, and explore interactions between living organisms and their environment. Many North American species of freshwater mussels are threatened or endangered because of habitat changes and the introduction of exotic mussels. Therefore, students are also able to examine the potential effects of biodiversity loss in aquatic environments.
关键词：freshwater mussel;macroinvertebrate;filter feeding;ecology