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Gene expression and sensory structures in sponges: Explorations of sensory-neural origins in a non-bilaterian context
DownloadFall 2017
The nervous system is present in all but two animal phyla – one of them being Porifera, sponges. Sponges have no neurons and yet have organized behavior and finely tuned sensation. Furthermore, sponges have genes involved in the nervous system of other animals (informally called ‘neural’ genes)....
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Geodia barretti - Energy budget data sheet for Limnology and Oceanography
2017-05-26
Geodia barretti is a massive nearly spherical sponge that forms dense assemblages on the continental shelf of the North Altantic and the Norwegian Sea. We studied the metabolism of individual sponges collected using a remotely operated vehicle and maintained in large tanks with high volumes of...
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2022-06-29
Reiswig, Henry M, Leys, Sally P, Diluvio, MS
These notebooks were scanned by Maria Diluvio from Henry Reiswig's collection. Henry kept meticulous notes for all of his life (1936-2020). Henry's work was on sponges (Phylum Porifera).
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Insights from Sponge Transcriptomes & Physiology about the Early Evolution of Nervous Systems
DownloadFall 2014
The origin of neurons and neural systems is a research area that has begun to experience increased progress with the growing availability of genomic data from a range of basal metazoans and closely related outgroups. This has allowed a reevaluation of previous models of neural evolution....
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Interpretation of sponge fossil faunas: A neontological approach to a paleontological problem
DownloadFall 2021
The tempo and mode of early animal evolution remains one of the biggest conundrums in biology. Stratigraphy shows that there is a gap, not attributable to poor preservation, of at least ~100 Myr between the oldest animal fossils and the divergence times implied by molecular phylogenies. Sponges,...
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2023-12-10
Harrison DE, Diluvio MS, Matveev E, Corrêa PVF, De Leo FC, Leys SP
Supplementary files associated with the Journal Article
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Molecular and functional bases of coordination in early branching metazoans – insights from physiology and investigations of potassium channels in the Porifera
DownloadFall 2010
Tompkins MacDonald, Gabrielle Jean
Sponges are filter feeders that lack nerves and muscle but are nonetheless able to respond to changes in the ambient environment to control their feeding current. Cellular sponges undergo coordinated contractions that effectively expel debris. Syncytial sponges propagate action potentials through...
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Nexus file of all Porifera Wnts
2017-11-29
Sally Leys, Pamela Windsor-Reid
ABSTRACT Background: The Wnt signaling pathway is uniquely metazoan and used in many processes during development, including the formation of polarity and body axes. In sponges, one of the earliest diverging animal groups, Wnt pathway genes have diverse expression patterns in different groups...
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Nexus file of All Wnt genes
2017/211/29
Sally Leys, Pamela Windsor-Reid
ABSTRACT Background: The Wnt signaling pathway is uniquely metazoan and used in many processes during development, including the formation of polarity and body axes. In sponges, one of the earliest diverging animal groups, Wnt pathway genes have diverse expression patterns in different groups...
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Phylogenetic analyses and fasta files of Porifera Wnts
2017-11-30
Sally Leys, Pamela Windsor-Reid
Supporting gene tree and fasta files associated with the journal article: "Wnt signaling and polarity in freshwater sponges", BMC Evolutionary Biology 2017. Authors: Pamela J. Windsor Reid, Eugueni Matveev, Alexandra McClymont, Dora Posfai, April L. Hill, and Sally P. Leys. Abstract: Background:...