A5058681809- Marine Sponges and Natural Products
- Coral and Marine Ecosystems Studies
- Microbial Natural Products and Biosynthesis
- Marine Ecology and Invasive Species
- Marine Biology and Environmental Chemistry
- Genomics and Phylogenetic Studies
- Synthetic Organic Chemistry Methods
- Synthesis and Biological Activity
- Chemical synthesis and alkaloids
- Aquaculture disease management and microbiota
- Phytochemistry and Bioactive Compounds
- Environmental Chemistry and Analysis
- Crustacean biology and ecology
- Wastewater Treatment and Nitrogen Removal
- Microbial Community Ecology and Physiology
- Synthesis of heterocyclic compounds
- Yeasts and Rust Fungi Studies
- Antimicrobial agents and applications
- Echinoderm biology and ecology
- Social Skills and Education
- Fish Biology and Ecology Studies
- Bioactive Compounds and Antitumor Agents
- HER2/EGFR in Cancer Research
- Autophagy in Disease and Therapy
- Social impacts of COVID-19
Centro Científico Tecnológico - Bahía Blanca
2024
Harbor Branch Oceanographic Institute
2013-2023
Florida Atlantic University
2013-2023
Universidad de Margarita
2009-2023
Nova Southeastern University
2013-2015
National Museum of Natural History
2005-2013
Smithsonian Institution
2005-2013
University of Alabama at Birmingham
2013
Queen's University Belfast
2013
University of Richmond
2013
The most diverse and species-rich class of the phylum Porifera is Demospongiae. In recent years, systematics this clade, which contains more than 7000 species, has developed rapidly in light new studies combining molecular morphological observations. We add 500 new, nearly complete 18S sequences (an increase 200%) an attempt to further enhance understanding phylogeny Our study specifically targets representation type species genera that have never been sampled for any data effort accelerate...
Background Demosponges are challenging for phylogenetic systematics because of their plastic and relatively simple morphologies many deep divergences between major clades. To improve understanding the relationships within Demospongiae, we sequenced analyzed seven nuclear housekeeping genes involved in a variety cellular functions from diverse group sponges. Methodology/Principal Findings We generated data each four sponge classes (i.e., Calcarea, Hexactinellida, Homoscleromorpha), but...
This study presents the description of two Callyspongia species new to science, and distribution all recorded during first joint Cuba–U.S. expedition characterize Cuban mesophotic coral ecosystems (May–June 2017). Additionally, we propose a key identify thin branching genus in Greater Caribbean. The observations here presented are result underwater explorations with Mohawk Remotely Operated Vehicle dives at 35 sites around island, depths 25–188 m, recording images videos, collecting...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTopsentin, bromotopsentin, and dihydrodeoxybromotopsentin: antiviral antitumor bis(indolyl)imidazoles from Caribbean deep-sea sponges of the family Halichondriidae. Structural synthetic studiesShinji Tsujii, Kenneth L. Rinehart, Sarath P. Gunasekera, Yoel Kashman, Susan S. Cross, May Lui, Shirley A. Pomponi, M. Cristina DiazCite this: J. Org. Chem. 1988, 53, 23, 5446–5453Publication Date (Print):November 1, 1988Publication History Published online1...
The highly collaborative research sponsored by the NSF-funded Assembling Porifera Tree of Life (PorToL) project is providing insights into some most difficult questions in metazoan systematics. Our understanding phylogenetic relationships within phylum has changed considerably with increased taxon sampling and data from additional molecular markers. PorToL researchers have falsified earlier hypotheses, discovered novel alliances, found homes for enigmatic taxa, provided a more precise...
ABSTRACT Ammonia-oxidizing bacteria were detected by PCR amplification of DNA extracted from filtered water samples throughout the column Mono Lake, California. members β subdivision division Proteobacteria (β-subdivision ) using previously characterized primers; target sequences direct in both surface and below chemocline. Denaturing gradient gel electrophoresis analysis indicated presence at least four different β-subdivision ammonia oxidizers some samples. Subsequent sequencing amplified...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvaluation of new sesquiterpene quinones from two Dysidea sponge species as inhibitors protein tyrosine kinaseK. A. Alvi, Maria Cristina Diaz, Phillip Crews, Doris L. Slate, Rita H. Lee, and Robert MorettiCite this: J. Org. Chem. 1992, 57, 24, 6604–6607Publication Date (Print):November 1, 1992Publication History Published online1 May 2002Published inissue 1 November 1992https://doi.org/10.1021/jo00050a043RIGHTS & PERMISSIONSArticle...
ABSTRACT The dormant phenotype acquired by Mycobacterium tuberculosis during infection poses a major challenge in disease treatment, since these bacilli show tolerance to front-line drugs. Therefore, it is imperative find novel compounds that effectively kill bacteria. By screening 4,400 marine natural product samples against dual-fluorescent M. under both replicating and nonreplicating conditions, we have identified are selectively active . This validates our strategy of all assays as...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProtein tyrosine kinase inhibitory properties of planar polycyclics obtained from the marine sponge Xestospongia cf. carbonaria and total synthesisKhisal A. Alvi, Jaime Rodriguez, Maria Cristina Diaz, Robert Moretti, S. Wilhelm, Rita H. Lee, Doris L. Slate, Phillip CrewsCite this: J. Org. Chem. 1993, 58, 18, 4871–4880Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Published inissue 1 August...
Abstract Changes in the relative abundance of benthic groups on barrier fore reef at C arrie B ow ay, elize, point to a significant reduction corals and an expansion sponge community 1995–2009. Fifty‐one species are now present four geomorphological zones this reef: low‐relief spur‐and‐groove zone, inner slope, outer ridge, fore‐reef slope (to depth 30 m). Five new additions fauna reported for six account 42.6% total assemblage: N iphates erecta (9.60%), A iolochroia crassa (8.8%), digitalis...
Class Demospongiae is the largest in phylum Porifera (Sponges) and encompasses nearly 8,000 accepted species three subclasses: Keratosa, Verongimorpha, Heteroscleromorpha. Subclass Heteroscleromorpha contains ∼90% of demosponge subdivided into 17 orders. The higher level classification demosponges underwent major revision as result decades molecular studies. However, because most previous work only utilized partial data from a small number nuclear mitochondrial (mt) genes, this scheme needs...
Tetractinellida Marshall 1876 [Borchiellini et al. 2004] comprises the Orders Spirophorida and Astrophorida. A surveyof their diversity in Bocas del Toro archipelago (Panama) was conducted. total of ten species Tetractinellidawere encountered: Cinachyrella alloclada, apion, kuekenthali, Ecionemia megastylifera,Stelletta fibrosa, Stelletta sp., Stryphnus raratriaenus sp. nov., Erylus formosus, Geodia gibberosa Geodiapapyracea. Five these are new to Atlantic sponge fauna Panama, one which is...
Abstract. Previous studies suggest that phototaxis in sponge larvae is generated by the bending of a tuft long posterior cilia (LPC). The photoresponsiveness these often assayed examining their reaction to sudden changes light intensity. Here, we document and describe tropical marine sponges Neopetrosia proxima Xestospongia bocatorensis examine phototactic behavior larvae. Both species brood ovoid, tufted parenchymella larvae, clearly countering an earlier hypothesis all petrosid are...
Although ascidians form a conspicuous part of sessile assemblages in the Caribbean, no specialized inventories have been developed Venezuela, except for list 15 species reported from Margarita Island (1984). Here we present results taxonomic workshop held Universidad de Oriente, Boca del Rio, during April 20-25 2009, sponsored by NaGISA-Caribbean Sea program. La Restinga National park was surveyed and found 29 belonging to 19 genera 10 families. The most abundant colonial were Clavelina...
Seven new diterpene constituents were isolated from the sponge Acanthella cavernosa investigated Fijian locations. Their structures established based on a combination of spectroscopic data, x-ray crystallographic data and biogenetic arguments. These diterpenes, kalihinane family, can be divided into kalihinene (compounds 4 – 6) or 6-hydroxy-kalihinene 7 10) frameworks. Also present three known compounds, kalihinol A (1), isokalihinol F (2) (3). It is proposed that type diterpenes are...