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Prevalence And Speciation Of Lungworms In Maine Moose, Jordan Gagne
Prevalence And Speciation Of Lungworms In Maine Moose, Jordan Gagne
Honors College
The moose is a large cervid ruminant found throughout the northern United States, Europe, and Canada. In recent years, moose populations have been declining within some regions of the northern United States. A study done in 2012 by the University of Maine Animal Health Laboratory suggested that a novel lungworm species of the genus Dictyocaulus may contribute to moose mortality in Maine. Lungworms weaken the immune system of the host and cause parasitic bronchitis. The current 2013 study analyzed 90 sets of moose lungs collected during the legal moose-hunting season. Of these, 28 showed lungworm infections. 10 infections were characterized …
Territorial Aggression Increases Along An Urban Gradient In Resident But Not Migratory Song Sparrows, Darlene Turcotte
Territorial Aggression Increases Along An Urban Gradient In Resident But Not Migratory Song Sparrows, Darlene Turcotte
Honors College
During the breeding season, birds behave more aggressively toward rivals to maintain and defend territories. Resident birds are thought to be more aggressive than migratory birds because they need to maintain a territory year round. Furthermore, birds in urban environments can exhibit more aggressive behaviors than their rural counterparts because of the bolder behavioral characteristics required to colonize urban habitats. In this study, we investigated how migration strategy and landscape composition interact to affect territory defense in two subspecies of Song Sparrow (Melospiza melodia). To evoke an aggressive response, we simulated invasions by broadcasting songs from within a …