Browsing by Subject "review"

Now showing 1 - 3 of 3
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    Hitching a ride: A gastropod-associated microbiome community at a Hydrate Ride methane seep and impacts on local biogeochemical cycling
    (2022-10) Shaner, Sydney
    Exploration of cold seeps from geological, chemical, and biological perspectives has grown exponentially in recent decades since the first discovery of cold seeps in the 1980s. Symbiotic relationships, often rooted in geochemistry of the environment, have proven to be ubiquitous at cold seeps. However, our understanding of symbiotic relationships at extreme environments is limited. In this thesis, we first review two kinds of cold seep systems—gas hydrate-forming seeps, using Hydrate Ridge as an example, and brine-influenced seeps, with a focus on the Gulf of Mexico—from geological, microbiological, and biogeochemical perspectives. We then report on the composition of microbial communities associated with provannid gastropods as characterized using 16S rRNA gene amplicon and clone libraries as well as Fluorescence In Situ Hybridization. The gastropod shells, collected from seeps at Hydrate Ridge and the Gulf of Mexico are covered with filamentous epibionts on their shells. Large filamentous epibionts were identified as Candidatus Marithrix, Thiomargarita nelsonii, and a previously undescribed Chloroflexi. Our analysis of three incomplete Chloroflexi’s genomes leads us to hypothesize that the Chloroflexi is an acetogen. Environmental samples from a previous sample revealed that the gastropod-associated community differed from the surrounding microbial communities, implying a selection mechanism for gastropod habitation and that the gastropod shell potentially serves as a unique niche. The diverse community of microbes on the shell of these seep-dwelling gastropods may represent a symbiotic relationship made possible by the gastropods motility that provides the attached microbial community with essential metabolites, while the attached community may serve the gastropod by providing it with a source of nutrition, and potentially detoxifying hydrogen sulfide.
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    Phylogeny and revision of the Neotropical genus Grumichella Müller (Trichoptera: Leptoceridae), including nine new species and a key
    (Oxford University Press, 2016) Calor, Adolfo R.; Holzenthal, Ralph W.; Froehlich, Claudio G.
    The systematics of the Neotropical caddisfly genus Grumichella Müller (Leptoceridae: Grumichellinae) are reviewed. Diagnoses, descriptions and illustrations are provided for four previously described species, G. aequiunguis Flint, 1983, G. flaveola (Ulmer, 1911), G. pulchella (Banks, 1910) and G. rostrata Thienemann, 1905, and nine new species: G. blahniki sp. nov. (Peru), G. boraceia sp. nov. (Brazil), G. cressae sp. nov. (Venezuela), G. jureia sp. nov. (Brazil), G. leccii sp. nov. (Brazil), G. muelleri sp. nov. (Brazil), G. paprockii sp. nov. (Brazil), G. parati sp. nov. (Brazil) and G. trujilloi sp. nov. (Venezuela). The monophyly of the genus is corroborated (16 synapomorphies) and the phylogenetic relationships of its included species, based on analysis of 66 adult, larval, and pupal characters, are inferred as (G. aequiunguis ((G. boraceiae (G. leccii, G. parati)) (G. rostrata ((G. flaveola, G. pulchella) (G. muelleri, G. paprockii)) (G. jureia (G. trujilloi (G. cressae, G. blahniki)))))). A taxonomic key to the males of the species is presented.
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    Supplementary materials for A Review of Affective Computing Research Based on Function-Component-Representation Framework
    (2021-04-26) Ma, Haiwei; Yarosh, Svetlana; maxxx979@umn.edu; Ma, Haiwei; University of Minnesota GroupLens Research Lab
    The data provide detailed information about our conceptual analysis. These data files can increase the transparency, reproducibility, and replicability of our paper and facilitate knowledge sharing among the research community. It is requested by reviewers of our paper to publicize these data for the benefit of readers and the research community.