Abstract Context Landscape simplification is a main driver of insect decline, threatening crop pollination services. Changes in functional features simplified agroecosystems may impact the abundance wild pollinators. Objectives Here, we studied whether different pollinator groups based on life-history are differentially associated to landscape features, and how this affects service delivery. Me...

Arizona aquaculture production in 2000 was 680 metric tons. Finfish including tilapia, bass, trout and catfish accounted for 590 metric tons, while other culture organisms, primarily marine shrimp rounded out production. The continued success of the aquaculture industry in Arizona is dependent on the success of individual farms. By increasing the chances of success through the proper selection ...

Glycolysis in muscle during the anaerobic component of severe exercise rapidly produces lactate (La") and metabolic protons (Hm) in equal amounts, some of which may enter the blood (Krebs, Wood & Alberti, 1975). In vivo experimentation using strenuously exercised fish has yielded two patterns: La" accumulating in blood either in greater or lesser amounts than H j . It was rare to find both spec...

The purpose of this report is to compare odor dispersion at swine facilities that use alternative waste technologies (as well as a waste processing center) with odor dispersion at two control farms that use conventional lagoon technology. The goal was to determine if these alternative technologies reduce or substantially eliminate the emission of odor that is detectable beyond the boundaries of...

Domesticated (farm) salmonid fishes display an increased willingness to accept risk while foraging, and achieve high growth rates not observed in nature. Theory predicts that elevated growth rates in domestic salmonids will result in greater risk-taking to access abundant food, but low survival in the presence of predators. In replicated whole-lake experiments, we observed that domestic trout (...

Fish from aquaculture has the ability to meet consumer demand for a healthy and sustainable diet. The environmental footprint of fish farming depends largely on method production. Trout production in temperate climate zone open flow-through systems using natural hydraulic gradient streams as freshwater supply is energy efficient relative more intensive systems. To investigate possibility reduci...

OBJECTIVE Environmental estrogens at an elevated concentration are known to produce adverse effects on human and animal life. However, the majority of researches have been focused on industrial discharges, while the impact of livestock wastes as a source of endocrine disrupters in aquatic environments has been rarely elucidated. In order to investigate the contribution of environmental estrogen...

Many Appalachian streams historically dominated by Brook Trout Salvelinus fontinalis have experienced shifts towards fish communities dominated by Rainbow Trout Onchorhynchus mykiss. We used empirical estimates of biomass and secondary production of trout conspecifics to evaluate species success under varied thermal regimes. Trout populations were sampled in 13 Appalachian streams from Maryland...

This paper reports on the statistical analysis of the 1995 survey of 451 shrimp farms in Thailand. The aim was to identify relationships which may indicate key issues for research into sustainability. Rigorous cleaning up of the data was carried out to eliminate cases where the data could not be validated or where a respondent consistently omitted data. In the subsequent analysis, nine key outc...

The Wisconsin Division of Health investigated mercury exposure in a 40-year-old man, his 42-year-old wife, and their 2.5-year-old son. At the time of our investigation, these individuals had blood mercury levels ranging from 37 to 58 micrograms/L (normal < 5 micrograms/L) and hair samples from the adults contained 10-12 micrograms mercury/g dry weight. A personal interview and home inspection f...