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Articles 1 - 4 of 4
Full-Text Articles in Aquaculture and Fisheries
Assessment Of Sea Lice Infestations On Wild Fishes Of Cobscook Bay, Alexander Jensen
Assessment Of Sea Lice Infestations On Wild Fishes Of Cobscook Bay, Alexander Jensen
Honors College
Sea lice are ectoparasitic copepods on fishes and can negatively impact aquaculture operations. Little work on sea lice, specifically Lepeophtheirus salmonis and Caligus elongatus, has occurred in the northwest Atlantic. This project characterized sea lice infestations on wild fishes in Cobscook Bay during 2012. Trawling, seine netting, and fyke netting occurred from March to November. Netting sites were selected to sample the bay’s three regions: Outer, Central, and Inner Bay. Visual examinations of fish were used to identify wild hosts and characterize sea lice life stage abundances, attachment locations, and infection prevalence and intensity. DNA sequencing was used to …
Investigation Of Early Development And Importance Of Sediment Choice In The Hatchery Production Of Razor Clams, Ensis Directus, Molly P. Flanagan
Investigation Of Early Development And Importance Of Sediment Choice In The Hatchery Production Of Razor Clams, Ensis Directus, Molly P. Flanagan
Honors College
Ensis directus, commonly known as the razor clam, is a bivalve species that lives in temperate sub-polar regions of the Atlantic Ocean. It is an infaunal species found in shallow, subtidal, sedimentary habitats. A recent increase in the market value for razor clams has resulted in heightened interest in the culture of this species. The experimental hatchery at the University of Maine’s Darling Marine Center began work in 2012 to develop improved hatchery and grow-out techniques for this species. For my thesis, razor clam embryos from both spontaneous and controlled spawns were observed via video and still imagery to document …
Diet And Prey Availability Of Sturgeons In The Penobscot River, Maine, Matthew Dzaugis
Diet And Prey Availability Of Sturgeons In The Penobscot River, Maine, Matthew Dzaugis
Honors College
Although vital to the protection and conservation of species listed under the U.S. Endangered Species Act, critical habitat of shortnose sturgeon and Atlantic sturgeon in the Penobscot River, Maine have not yet been described. Critical habitat includes food availability as well as the physical characteristics of foraging habitat. To characterize seasonal availability of benthic prey, a ponar grab was used to collect over 125 benthic samples between 21 May and 8 October 2012. Samples were stratified throughout the river and broadly categorized by sediment type. All organisms within samples were identified to the family level. To characterize diet, stomach contents …
Observing The Location And Orientation Of Nematocysts Through Aeolidiella Stephaniae, Siobhan L. Bolinger
Observing The Location And Orientation Of Nematocysts Through Aeolidiella Stephaniae, Siobhan L. Bolinger
Honors College
The anemone species Aiptasia is a nuisance pest that can quickly out-compete many species in a coral reef aquarium. The aeolid nudibranch Berghia verrucicornis, now officially known as Aeolidiella stephanieae, consumes only anemones of the Aiptasia species, a feature that has increased its popularity among aquarium overseers everywhere. Not much information exists on the digestive process of these aeolids, but what exists notes that A. stephaniae seem to house parts of the anemone it consumes in the cerata on its back, a practice commonly seen in other aeolids that feed on cnidarian species. By observing the location of …