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Articles 1 - 30 of 42
Full-Text Articles in Life Sciences
The Infection Dynamics Of Sea Lice On Atlantic Salmon (Salmo Salar) In Cobscook Bay, Maine, Usa, Catherine Anne Frederick
The Infection Dynamics Of Sea Lice On Atlantic Salmon (Salmo Salar) In Cobscook Bay, Maine, Usa, Catherine Anne Frederick
Electronic Theses and Dissertations
Sea lice (Lepeophtheirus and Caligus spp) are parasitic copepods that infect the external surfaces of fish hosts. Salmon lice (L. salmonis) outbreaks are commonly reported by operations in Canada, Norway, Scotland, Ireland, and the United States and are a primary concern in aquaculture because of their fish health and economic impacts. When farmed fish mortalities and treatments are accounted for, annual losses from sea louse infestations exceed $300,000,000 (Costello 2009). Farms experiencing sea lice infections risk on-site re-infection and transmission to wild populations and other farms that are hydrographically connected. In Maine, Atlantic salmon farms are located in the northeast, …
Developing Animal Feed Preservatives From Paper Mill Byproducts, Diana Carolina Reyes Gomez
Developing Animal Feed Preservatives From Paper Mill Byproducts, Diana Carolina Reyes Gomez
Electronic Theses and Dissertations
Our objectives were to evaluate the antifungal properties of technical lignins against 3 molds and 1 yeast causing hay spoilage, and for their ability to preserve alfalfa hay nutritive value. In experiment 1, 8 technical lignins and propionic acid (PRP; positive control) were tested at a dose of 40 mg/mL. The experiment had a randomized complete block design (RCBD, 4 runs) and a factorial arrangement of 3 molds × 10 additives (ADV). The effects of ADV on the yeast were also evaluated with a RCBD. Across fungi, sodium lignosulfonate (NaL) and PRP were the only treatments with a 100 ± …
Associations Between Avian Spruce-Fir Species, Harvest Treatments, Vegetation, And Edges, Brian W. Rolek
Associations Between Avian Spruce-Fir Species, Harvest Treatments, Vegetation, And Edges, Brian W. Rolek
Electronic Theses and Dissertations
Habitat loss is the primary cause of species loss and declines of global biodiversity. Several birds associated with the spruce-fir forest type (hereafter spruce-fir birds) have declining populations across the continent in the Atlantic Northern Forest, and the extent of coniferous forest has declined in some areas. This region is extensively and intensively managed for timber products.
To investigate the influence from harvest treatments on the spruce-fir bird assemblage during the breeding and post-breeding period in lowland conifer and mixed-wood forests, we used avian point count detection data to test for associations between avian assemblages and seven common harvest treatments. …
Black Soldier Fly Larvae As Value-Added Feed For Aquaculture In Maine, Joshua Villazana
Black Soldier Fly Larvae As Value-Added Feed For Aquaculture In Maine, Joshua Villazana
Electronic Theses and Dissertations
Black soldier flies (BSF), Hermetia illucens (Linnaeus) (Diptera: Stratiomyidae) consume decaying organic waste as larvae (BSFL) and can be used for recycling a variety of biogenic wastes. BSFL can also be processed into value-added animal feeds, including those used in aquaculture. An overarching goal of this project was to obtain additional insights into BSF biology to improve their rearing and handling in future mass-production facilities serving Maine aquaculture.
We tested BSFL growth in the laboratory on seven seafood wastes from Maine fish processing facilities. Substrates potentially suitable for BSFL rearing included finfish trimmings, wet sea cucumber, dry quahog, and sea …
Landings, Vol. 26, No. 12, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 12, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
Landings, Vol. 26, No. 11, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 11, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
Landings, Vol. 26, No. 10, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 10, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
Landings, Vol. 26, No. 9, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 9, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
Landings, Vol. 26, No. 8, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 8, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
On How A Fisherman Supports Fishermen: Oral History With Patrick Shepard, Natalie Springuel
On How A Fisherman Supports Fishermen: Oral History With Patrick Shepard, Natalie Springuel
The Catch
No abstract provided.
Catching Up With Robin Alden, Kathleen Ellis
Reflections On The Water, Patricia S. Ranzoni
The World Is Your Oyster, Aliya Uteuova
Editor's Note: The Catch Volume Vi, Catherine Schmitt
Landings, Vol. 26, No. 7, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 7, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
Landings, Vol. 26, No. 6, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 6, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
Investigating Present-Day Health Issues Of The American Lobster (Homarus Americanus), Deborah A. Bouchard
Investigating Present-Day Health Issues Of The American Lobster (Homarus Americanus), Deborah A. Bouchard
Electronic Theses and Dissertations
The American lobster, Homarus americanus, H. Milne Edwards, 1837, supports the most economically valuable fishery along the North Atlantic coast of North America. A collapse in lobster populations in Southern New England (SNE) has coincided with increasing ocean temperatures and emerging diseases. This research investigated the etiologies of limp lobster disease (LLD) and epizootic shell disease (ESD), two diseases that continue to cause significant mortality in natural lobster populations. Mortality from LLD is associated with the bacteria Photobacterium indicum and is more intense in impounded lobsters. To more clearly define the community ecology of this suspected opportunistic pathogen, the microbial …
Spatio-Temporal Dynamics Of Atlantic Cod Bycatch In The Maine Lobster Fishery And Its Impacts On Stock Assessment, Robert E. Boenish
Spatio-Temporal Dynamics Of Atlantic Cod Bycatch In The Maine Lobster Fishery And Its Impacts On Stock Assessment, Robert E. Boenish
Electronic Theses and Dissertations
Of the most iconic fish species in the world, the Atlantic cod (Gadus morhua, hereafter, cod) has been a mainstay in the North Atlantic for centuries. While many global fish stocks have received increased pressure with the advent of new, more efficient fishing technology in the mid-20th century, exceptional pressure has been placed on this prized gadoid. Bycatch, or the unintended catch of organisms, is one of the biggest global fisheries issues. Directly resulting from the failed recovery of cod in the GoM, attention has been placed as to possible sources of unaccounted catch. Among the most …
Improving Techniques To Study Equine Cervical Mucociliary Clearance, Melissa A. Hawkes
Improving Techniques To Study Equine Cervical Mucociliary Clearance, Melissa A. Hawkes
Electronic Theses and Dissertations
Bacterial uterine infections inflict major losses on the equine breeding industry. These infections usually arise from bacteria introduced at breeding. Micro-currents propelled by ciliated cells between the folds of the uterus and cervix have been proposed as a means by which contaminants are expelled. Previous data have shown possible ciliary micro-currents propelling carbon particles, occasionally rotating, through cervical folds. However, adherence to the epithelium may have interfered with movement of carbon in these studies. Therefore, we tested potentially non-adherent substances to reveal ciliary micro-currents on the equine cervix under high magnification video-endoscopy. We hypothesized that polyethylene green microspheres 1 - …
Incorporating Environmental Variability Into Assessment And Management Of American Lobster (Homarus Americanus), Kisei Tanaka
Incorporating Environmental Variability Into Assessment And Management Of American Lobster (Homarus Americanus), Kisei Tanaka
Electronic Theses and Dissertations
The American lobster (Homarus americanus) support one of the most valuable fisheries in the United States. A growing body of literature recognizes the importance of environmental variables in regulating this species’ biogeography and population dynamics. However, the current lobster stock assessment and management do not explicitly consider the impact of environmental variables such as water temperature and assumes spatiotemporal variabilities in the lobster environment as random background noises. Furthermore, while climate-induced changes in marine ecosystems continue to impact the productivity of lobster fisheries, studies that model lobster response to altered environmental conditions associated with climate change are lacking. …
Mr448: Bees And Their Habitats In Four New England States, Alyson C. Dibble, Francis A. Drummons, Anne L. Averill, Kalyn Bickerman-Martens, Sydney C. Bosworth, Sara L. Bushmann, Aaron K. Hoshide, Megan E. Leach, Kim Skyrm, Eric Venturini, Annie White
Mr448: Bees And Their Habitats In Four New England States, Alyson C. Dibble, Francis A. Drummons, Anne L. Averill, Kalyn Bickerman-Martens, Sydney C. Bosworth, Sara L. Bushmann, Aaron K. Hoshide, Megan E. Leach, Kim Skyrm, Eric Venturini, Annie White
Miscellaneous Reports
Bees are crucial to pollination in unmanaged ecosystems and some crops, and their roles are increasingly understood in four states in the Northeastern U.S., abbreviated “NNE” in this paper: Maine (ME), Massachusetts (MA), New Hampshire (NH), and Vermont (VT). The four states have in common many native bee and plant species, forest types, and natural communities. They share drought events and risk of wildfire (Irland 2013). They are exposed to many of the same major storms (e.g., hurricanes, Foster 1988), pollution events (Hand et al. 2014), and effects ascribed to climate change (Hayhoe et al. 2008). Beekeeping enterprises (the western …
Landings, Vol. 26, No. 5, Maine Lobstermen’S Community Alliance
Landings, Vol. 26, No. 5, Maine Lobstermen’S Community Alliance
Landings: News & Views from Maine's Lobstering Community
Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to
Maine’s lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.
Maine Lobstermen’s Community Alliance (MLCA) started publication of Landings, a 24-page newsletter in January 2013 as the successor of the Maine Lobstermen’s Association (MLA) Newsletter. As of 2022, the MLCA published over 6,500 copies of …
Wildlife Use Of Vernal Pools In An Urbanizing Landscape With A Focus On Population Vitality Of Vernal Pool-Breeding Amphibians, Carly Jasmine Eakin Phd
Wildlife Use Of Vernal Pools In An Urbanizing Landscape With A Focus On Population Vitality Of Vernal Pool-Breeding Amphibians, Carly Jasmine Eakin Phd
Electronic Theses and Dissertations
Vernal pools in the northeastern United States provide essential habitat for pool-breeding amphibians and provide resources for other forest-dwelling wildlife. These pools and pool-breeding amphibians in particular are threatened by land conversion associated with urbanization and urban-associated factors. The responses of these amphibians and of birds and mammals using vernal pools to intermediate levels of urban development are largely unknown. I used field observations and lab experiments to study the amphibians, birds, and mammals associated with vernal pools along an urban development gradient in greater Bangor, Maine.
In Chapter 1, I examined bird and mammal use and assemblage composition at …
Assessing Economic Performance Of Maine's Lobster Fleet Under Changing Ecosystem Conditions In The Gulf Of Maine, Alexa M. Dayton
Assessing Economic Performance Of Maine's Lobster Fleet Under Changing Ecosystem Conditions In The Gulf Of Maine, Alexa M. Dayton
Electronic Theses and Dissertations
This research evaluates lobster producer efficiency and considers fleet wide economics and policy implications in support of changing marine ecosystems in the Gulf of Maine. We conducted a comprehensive lobster industry survey to assess costs and effort expended at the producer level for a representative fishing year, and establish a series of production function performance baselines for future comparison. The demographic data, attitudes and valuations collected allow us to characterize the fishing effort and regional dependency on the resource. We look at the Maine Lobster limited entry licensing system, to understand how the future participation in the fishery might change, …
The Effects Of The Hemlock Woolly Adelgid On Abundance And Nymphal Infection Prevalence Of Black-Legged Ticks In Maine, Spencer Christian Debrock
The Effects Of The Hemlock Woolly Adelgid On Abundance And Nymphal Infection Prevalence Of Black-Legged Ticks In Maine, Spencer Christian Debrock
Honors College
The black-legged tick (Ixodes scapularis) has recently made a tremendous impact in Maine due to its role as a vector for the bacterial pathogen Borrelia burgdorferi, the causative agent of Lyme disease. A lesser known, but equally concerning, invasive insect is the hemlock woolly adelgid (HWA; Adelges tsugae), a sap-sucking scale that is primarily responsible for the ongoing widespread decline of eastern hemlock in the northeast. Maine is currently experiencing a co-invasion of these species, and this study tests the hypothesis that the phenomenon of hemlock loss may facilitate the invasion of the black-legged tick by …
A Characterization Of Poultry Flocks And Poultry Producers In Maine, Alice Gluchanicz
A Characterization Of Poultry Flocks And Poultry Producers In Maine, Alice Gluchanicz
Honors College
This study sought to characterize backyard poultry flocks and poultry producers’ knowledge of poultry husbandry in Maine. A survey on poultry flock characterization, management, and health was sent to poultry producers living in Maine. Based on the survey, most backyard poultry flocks contained 7-20 birds. Chickens were the predominant poultry species in Maine. Flocks were used primarily for egg production and companionship. Management practices varied greatly among producers, indicating a need for more flock management education. Mites and coccidiosis were the most commonly reported causes of illness by producers, but several diseases affected poultry in Maine. Producers cited the internet …
Twenty-Five Years Of Change In Spruce Grouse Occupancy At Their Southern Range Margin In Maine, Usa, Christopher J. Gilbert
Twenty-Five Years Of Change In Spruce Grouse Occupancy At Their Southern Range Margin In Maine, Usa, Christopher J. Gilbert
Honors College
Species at their southern range margin are often dispersed throughout fragmented populations where they experience less optimum conditions compared to their central range. Spruce Grouse (Falcipennis canadensis) are boreal forest obligates distributed throughout the Northern United States and Canada and reach their southeastern range extent in Maine. I resurveyed 18 Black Spruce (Picea mariana) – Tamarack (Larix laricina) stands on Mount Desert Island, Maine, to observe changes in Spruce Grouse occupancy and abundance between the early 1990s (Whitcomb et al. 1996) and present day. I conducted two rounds of call back surveys within each …
Assessing The Impacts Of Commercial Clearcut On Freshwater Invertebrate Communities, Nicholas J. Kovalik
Assessing The Impacts Of Commercial Clearcut On Freshwater Invertebrate Communities, Nicholas J. Kovalik
Honors College
Forest harvesting can impact the environment in many ways, one of which is causing a loss of subsidies and increased light intensity to freshwater ecosystems. This can have a major impact on freshwater invertebrate communities that may rely on subsidies to survive. In this study, I tested two effects of commercial clearcut, changes in light availability and detrital resources, on freshwater invertebrate communities. Cattle tanks containing freshwater invertebrates were given detritus from two different plots: one which underwent commercial clearcut over 50 years ago, and one which underwent commercial clearcut 2 years ago. Tanks were also placed in two areas …