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Invasive species

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Confirmed Presence Of Parahepatospora Carcini In Carcinus Maenas Population Of Maine, Brittany Torchia May 2020

Confirmed Presence Of Parahepatospora Carcini In Carcinus Maenas Population Of Maine, Brittany Torchia

Honors College

Carcinus maenas (European green crab) is an invasive species that made its way to North American waters in the 1800s on European trading ships. As an invasive species they cause problems by competing with native species for the resources within their shared ecosystem. They can also introduce pathogens that can infect and wreak havoc on native populations. In Nova Scotia, Bojko et al. (2017) found the pathogen Parahepatospora carcini, a clade IV microsporidian parasite found in the hepatopancreas of aquatic arthropods, in C. maenas. Because this case was located within close range of Maine waters, the objective of this study …


Implications Of Body Size And Habitat Distribution Of Carcinus Maenas For Predation On Mytilus Edulis In The Gulf Of Maine, Mckenzie Thompson May 2017

Implications Of Body Size And Habitat Distribution Of Carcinus Maenas For Predation On Mytilus Edulis In The Gulf Of Maine, Mckenzie Thompson

Honors College

The blue mussel, Mytilus edulis, is a commercially important species along the Gulf of Maine. Its rapid decline in population size over the last forty years has led many researchers to question if the invasive green crab, Carcinus maenas, is affecting its distribution. The increase in annual mean water temperature, due to global climate change, has led many to fear an expansion of the green crab’s range and an increase in population density among areas they currently inhabit. The Damariscotta River in Walpole, Maine offers a unique thermal gradient to study the effects of temperature on green crab distribution, abundance, …