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Bacterial Community Profiles And Vibrio Parahaemolyticus Abundance In Individual Oysters And Their Association With Estuarine Ecology, Ashley L. Marcinkiewicz, Brian M. Schuster, Stephen H. Jones, Vaughn S. Cooper, Cheryl A. Whistler
Bacterial Community Profiles And Vibrio Parahaemolyticus Abundance In Individual Oysters And Their Association With Estuarine Ecology, Ashley L. Marcinkiewicz, Brian M. Schuster, Stephen H. Jones, Vaughn S. Cooper, Cheryl A. Whistler
New Hampshire Agricultural Experiment Station Publications
Oysters naturally harbor the human gastric pathogen Vibrio parahaemolyticus, but the nature of this association is unknown. Because microbial interactions could influence the accumulation of V. parahaemolyticus in oysters, we investigated the composition of the microbiome in water and oysters at two ecologically unique sites in the Great Bay Estuary, New Hampshire using 16s rRNA profiling. We then evaluated correlations between bacteria inhabiting the oyster with V. parahaemolyticus abundance quantified using a most probable number (MPN) analysis. Even though oysters filter-feed, their microbiomes were not a direct snapshot of the bacterial community in overlaying water, suggesting they selectively accumulate some …
Anthropogenic Habitats Facilitate Dispersal Of An Early Successional Obligate: Implications For Restoration Of An Endangered Ecosystem, Katrina E. Amaral, Michael W. Palace, Kathleen M. O'Brien, Lindsey E. Fenderson, Adrienne I. Kovach
Anthropogenic Habitats Facilitate Dispersal Of An Early Successional Obligate: Implications For Restoration Of An Endangered Ecosystem, Katrina E. Amaral, Michael W. Palace, Kathleen M. O'Brien, Lindsey E. Fenderson, Adrienne I. Kovach
New Hampshire Agricultural Experiment Station Publications
Landscape modification and habitat fragmentation disrupt the connectivity of natural landscapes, with major consequences for biodiversity. Species that require patchily distributed habitats, such as those that specialize on early successional ecosystems, must disperse through a landscape matrix with unsuitable habitat types. We evaluated landscape effects on dispersal of an early successional obligate, the New England cottontail (Sylvilagus transitionalis). Using a landscape genetics approach, we identified barriers and facilitators of gene flow and connectivity corridors for a population of cottontails in the northeastern United States. We modeled dispersal in relation to landscape structure and composition and tested hypotheses about the influence …
Genetic Variation Within And Among Asexual Populations Of Porphyra Umbilicalis Kützing (Bangiales, Rhodophyta) In The Gulf Of Maine, Usa, Renee L. Eriksen, Lindsay A. Green, Anita S. Klein
Genetic Variation Within And Among Asexual Populations Of Porphyra Umbilicalis Kützing (Bangiales, Rhodophyta) In The Gulf Of Maine, Usa, Renee L. Eriksen, Lindsay A. Green, Anita S. Klein
New Hampshire Agricultural Experiment Station Publications
The intertidal marine red alga Porphyra umbilicalis reproduces asexually in the Northwest Atlantic. We looked for population substructure among typical open-coastal and atypical estuarine habitats in seven asexual populations of P. umbilicalis from Maine to New Hampshire using eight expressed sequence tag-simple sequence repeats (EST-SSR) or microsatellite loci. Six genotypes were identified, four of which may represent recombinant genotypes from a recombination event that took place locally, or that took place prior to introduction to the Northwest Atlantic. Genotypic diversity was lowest in a population from Wiscasset, Maine, which inhabits an atypical habitat high in the intertidal zone of a …
Distribution, Morphology, And Genetic Affinities Of Dwarf Embedded Fucus Populations From The Northwest Atlantic Ocean, Arthur C. Mathieson, Clinton J. Dawes, Aaron L. Wallace, Anita S. Klein
Distribution, Morphology, And Genetic Affinities Of Dwarf Embedded Fucus Populations From The Northwest Atlantic Ocean, Arthur C. Mathieson, Clinton J. Dawes, Aaron L. Wallace, Anita S. Klein
New Hampshire Agricultural Experiment Station Publications
Dwarf embedded Fucus populations in the Northwest Atlantic Ocean are restricted to the upper intertidal zone in sandy salt marsh environments; they lack holdfasts and are from attached parental populations of F. spiralis or F. spiralis x F. vesiculosus hybrids after breakage and entanglement with halophytic marsh grasses. Dwarf forms are dichotomously branched, flat, and have a mean overall length and width of 20.3 and 1.3 mm, respectively. Thus, they are longer than Irish (mean 9.3 mm) and Alaskan (mean 15.0 mm) populations identified as F cottonii. Reciprocal transplants of different Fucus taxa in a Maine salt marsh confirm that …
Variation In A Host-Epiphyte Relationship Along A Wave Exposure Gradient, Phillip S. Levin, Arthur C. Mathieson
Variation In A Host-Epiphyte Relationship Along A Wave Exposure Gradient, Phillip S. Levin, Arthur C. Mathieson
New Hampshire Agricultural Experiment Station Publications
The red alga Polysiphonia lanosa (L ) Tandy is an obligate epiphyte that primarily occurs on the fucoid brown algal basiphyte Ascophyllum nodosum (L) Le Jolis In the present study we examine how epiphytic interactions between P lanosa and A nodosum vary along a wave exposure gradient within the southern Gulf of Maine, USA P lanosa was most dense on protected shores, however because the stature of P lanosa was greater on exposed than on sheltered shores, greater biomass occurred In exposed habitats Epiphytlc P lanosa pnmanly attached to inlured vegetative bssue at exposed sites, while ~ t osc currence …