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Full-Text Articles in Life Sciences
Comparing Aggression Levels In Jack Dempsey Cichlids Based On Variation Of Haitat Structure, Johnne' Beaty, Bethany Sobray, Rachael Greer
Comparing Aggression Levels In Jack Dempsey Cichlids Based On Variation Of Haitat Structure, Johnne' Beaty, Bethany Sobray, Rachael Greer
Undergraduate Research Conference
Jack Dempsey cichlids, Rocio octofasciata, are native to South America and known for their aggressive behaviors. These fish are popular in freshwater aquariums, but can act aggressively towards other fish. In many species of fish individuals may behave aggressively to defend resources and the decision to defend these resources depends on factors such a habitat complexity (Oldfield 2011). Cichlids thus need ample room to maintain individual territories. Behavioral patterns in other species of cichlids have observed that the establishment of territories is constantly changing (Dijkstra et al. 2009). Individuals use information such as habitat complexity to adapt to environments, even …
Effects Of Weaning Strategy On Growth And Stress In Beef Calves, D L. Warden, M E. Brown, E G. Brown
Effects Of Weaning Strategy On Growth And Stress In Beef Calves, D L. Warden, M E. Brown, E G. Brown
Undergraduate Research Conference
Traditionally, calves are abruptly separated from their cows at approximately 205 days of age to prevent the calf from nursing. This process is commonly known as weaning. Weaning is very stressful for calves not only because of the separation from their dam, but also because of the change in their diet. When calves are weaned stress may result in behavioral changes, such as increased vocalization, pacing, loss of appetite and thirst. Stresses due to weaning may result in a weakened immune system which increases the risk for infection and disease. The objective of this study was to evaluate various weaning …