[DOWNLOAD] "Diet of Some Common Insects in the South Llano River (General NOTES)" by The Texas Journal of Science # eBook PDF Kindle ePub Free

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eBook details

• Title: Diet of Some Common Insects in the South Llano River (General NOTES)
• Author : The Texas Journal of Science
• Release Date : January 01, 1993
• Genre: Engineering,Books,Professional & Technical,
• Pages : * pages
• Size : 165 KB

Description

Many studies of stream and lake food webs have been prompted by interest in monitoring pollution levels and determining the mode by which pesticides enter and affect ecosystems (Ricklefs, 1973). A more recent thrust in food web studies has been generated by increased interest in biodiversity, conservation, restoration, and management (Cohen et al., 1990; Pimm, 1991; DeAngelis, 1992). Although invertebrate-dominated food webs are prevalent in nature, the vast majority of food webs that have been published are dominated by vertebrates, in part because predator-prey relationships can be established relatively easily for larger conspicuous animals. A remarkable exception is the arthropod dominated below-ground detrital food web studied by Moore et al. (1988). The South Llano River (SLR) in Kimble County, Texas, has high insect species diversity, with more than 100 taxa (Herrmann, 1992). Two of the most common groups of predators in the benthic food web of the SLR are creeping water bugs (Hemiptera: Naucoridae) and hellgrammites (Megaloptera: Corydalidae). As part of a larger study dealing with the structure and dynamics of the benthic food web of the SLR, a series of feeding trials were performed with three naucorid species; in addition, stomach contents were analyzed for hellgrammites. Herein, we report the results of those investigations.

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