A5016633020- Crustacean biology and ecology
- Marine Biology and Ecology Research
- Fish biology, ecology, and behavior
- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Marine Ecology and Invasive Species
- Oil Palm Production and Sustainability
- Fish Biology and Ecology Studies
- Invertebrate Immune Response Mechanisms
- Marine and coastal plant biology
- Oil Spill Detection and Mitigation
- Marine and coastal ecosystems
- Ichthyology and Marine Biology
- Aquatic Invertebrate Ecology and Behavior
Jackson State University
2016-2023
University of Louisiana at Lafayette
2007-2022
University of Southern Mississippi
2004-2009
Gulf of Mexico Research Initiative
2004
Several specimens of a small panopeid crab from coastal waters the western Gulf Mexico were long suspected to represent an undescribed species and are herein designated as representatives new genus. While originally collected over four decades ago not gene-sequence quality, later collections same locality produced materials that yielded sequence data for inclusion in molecular phylogenetic studies. Building on results those analyses, present taxonomic description draws upon morphology...
Speciose populations of small xanthoid crabs on offshore banks and reefs the northern Gulf Mexico include a new species that is not assignable to presently named genera. Morphological diagnoses genus are underpinned by previously published gene sequence analyses, originally misattributed another but now known apply this taxon. Herein Guinope tiara n. gen., sp., shows molecular phylogenetic affinities with family Linnaeoxanthidae Števčić, 2005, an ally panopeid pseudorhombilid crabs....
For much of terrestrial biodiversity, the evolutionary pathways adaptation from marine ancestors are poorly understood and have usually been viewed as a binary trait. True crabs, decapod crustacean infraorder Brachyura, comprise over 7600 species representing striking diversity morphology ecology, including repeated to non-marine habitats. Here, we reconstruct history Brachyura using new published sequences 10 genes for 344 tips spanning 88 109 brachyuran families. Using 36 newly vetted...
The diversity of seaweeds and decapod crustaceans associated with rhodoliths on deep offshore banks in the northwestern Gulf Mexico decreased dramatically after Macondo blowout. Decapod crustacean communities declined both abundance exhibited major shifts species dominance. Rhodoliths appear to serve as seedbanks for biological because dead rhodolith rubble became covered by epi- endolithic algae microbes laboratory microcosms. Decreased seaweed field may relate nutrient availability...
Members of the brachyuran crab superfamily Xanthoidea sensu Ng, Guinot & Davie (2008) are a morphologically and ecologically diverse assemblage encompassing more than 780 nominal species. On basis morphology, is presently regarded to represent three families: Xanthidae, Pseudorhombilidae, Panopeidae. However, few studies have examined this using modern phylogenetic methods, despite ecological economic importance large, poorly understood group. In study we examine relationships within...
The evolutionary relationships of the brachyuran crab superfamily E riphioidea, commonly known as stone or rubble crabs, are examined. Analysis three mitochondrial (12S, 16S and COI ) two nuclear loci (18S H istone 3) was carried out for 51 taxa representing C arpilioidea, D airoidea, G oneplacoidea, P arthenopoidea, ilumnoidea, ortunoidea, seudozioidea X anthoidea. Phylogenetic analyses molecular data used methods inference that recovered similar topologies with minor differences. Maximum...
Abstract For much of terrestrial biodiversity, the evolutionary pathways adaptation from marine ancestors are poorly understood, and have usually been viewed as a binary trait. True crabs, decapod crustacean infraorder Brachyura, comprise over 7,600 species representing striking diversity morphology ecology, including repeated to non-marine habitats. Here, we reconstruct history Brachyura using new published sequences 10 genes for 344 tips spanning 88 109 brachyuran families. Using 36 newly...
During recent studies of phylogenetic relationships within Eriphioidea (sensu Ng et al. 2008), we recovered molecularevidence that the genus Platyxanthus A. Milne-Edwards, 1863, was not monophyletic. This prompted detailedmorphological examination group, which confirmed clear differences in characteristics carapace, firstmale pleopod, antennae, antennules, epistome, abdomen, and thoracic sternum serve to separate species ofPlatyxanthus into three distinct groups. Comparison type material...
Chlorodiella longimana is the only chlorodielline species presently known from western Atlantic Ocean. Although C. superficially resembles other of genus in general appearance carapace, morphological analyses revealed a suite characters that separate it all – particular, ambulatory legs having dactyli with single tip and basal antennal segment lateral flange extends halfway into orbital hiatus, excluding flagellum. In addition, phylogenetic analysis Chlorodiellinae inferred three...
Eight species of the amphipod family Caprellidae sensu Myers and Lowry, 2003 are currently known to occur in shallow, near shore waters northern Gulf Mexico (GOM), from Suwannee River, Florida, Port Aransas, Texas, depths 10 m. They include: Phtisica marina, Hemiaegina minuta, Paracaprella pusilla, tenuis, Deutella incerta, Caprella equilibra, penantis, scaura. Another species, andreae, is also suspected this region due its close association with sea turtles, which nest on sand beaches GOM....
Pinnixa arenicola is redescribed and illustrated on the basis of new collections reexamined type material. Its occurrence in burrows Upogebia vasquezi Ngoc-Ho reported, along with range extensions that include Florida, Puerto Rico, Aruba, Cayman Islands. New represent first reports P. since original discoveries Curaçao suggest a potentially wide distribution species tropical western Atlantic. Following publication unillustrated description for holotype male, females were also noted to occur...
A single ovigerous female of Parapinnixa cortesi, a new species, was collected from the calcareous tube an unidentified serpulid polychaete on Isla del Coco, Costa Rica. The species most closely resembles P. glasselli Garth, 1939, hendersoni Rathbun, 1918, and nitida (Lockington, 1876), but it can be distinguished these all other members genus by morphology chelae proportions carapace.
Polycheria josephensis sp. n. (Dexaminidae), an ascidian symbiont, is described from St. Joseph Bay, Florida and other locations in the Gulf of Mexico nearshore Atlantic Ocean South Carolina to northern Florida. Observations on its ecology, behavior, distribution are provided. morphologically most similar osborni Calman, 1898 Pacific coast North America. differs P. number, spacing size spines inner plate maxilliped shape distal margins coxae 1-7.
Nineteen specimens representing four species in the brachyuran f~milie.sGoneplacidae and Dorippidae were collected during a year bIOlogIcal survey of Dampier Archipelago, northwest Western Australia, conducted by Australia Museum.Two are goneplacids, Eucrate affinis E. dorsalis other two dorippids, Dorippe quadridens Paradorippe australiensis.Notes on range extensions, habitats, etc., provided for these species.
Members of the brachyuran crab superfamily Xanthoidea sensu Ng, Guinot & Davie (2008) are a morphologically and ecologically diverse assemblage encompassing more than 780 nominal species. On basis morphology, is presently regarded to represent three families: Xanthidae, Pseudorhombilidae, Panopeidae. However, few studies have examined this using modern phylogenetic methods, despite ecological economic importance large, poorly understood group. In study we examine relationships within...
Milnepanopeus n. gen. is proposed to accommodate the western Atlantic brachyuran crab, Hexapanopeus lobipes. Characters of carapace, sternal groove, carpus ambulatory pereiopods, and male first gonopod define this presently monospecific genus. Recent molecular analyses support removal H. lobipes from Hexapanopeus, segregate genus as a distinct lineage Panopeidae Ortmann, 1893. The species redescribed lobipes, comb., on basis holotype supplementary material deep banks in Gulf Mexico....
Six species representing the order Stomatopoda are reported from shallow, inshore waters (passes, bays, and estuaries) of northern Gulf Mexico limited to a depth 10 m or less, by Apalachicola River (Florida) in east Port Aransas (Texas) west. With exception “live bottom” gonodactylid, Neogonodactylus bredini (Manning), these predatory crustaceans usually inhabit burrows mud, sand-mud, sand substrata coastal shelf waters. The treated this paper Lysiosquilla scabricauda (Lamarck), Bigelowina...
Background. Oil spills are major environmental disasters. Dispersants help control spills, as they emulsify oil into droplets to speed bioremediation. Although dispersant toxicity is controversial, the genetic consequences and damages of dispersed exposure poorly understood. We used RNA-seq measure gene expression flatback mudcrabs ( Eurypanopeus depressus, Decapoda, Brachyura, Panopeidae) exposed oil. Methods. Our experimental design included two types, oil-only, oil-dispersant treatments...
A new species of panopeid crab from shallow coastal waters Belize is formally described and named based upon comparative study three small specimens obtained in the course a regional biodiversity survey decapod crustaceans. The herein designated holotype Hexapanopeus klausruetzleri n. sp. specimen previously included molecular phylogenetic analysis that showed it to be closely related to, but genetically distinct from, western Atlantic angustifrons (Benedict Rathbun, 1891). differs this...
In the northern Gulf of Mexico, Gammarus mucronatus sensu lato is represented by at least two forms, G. stricto and a less common “macromucronate” form, which appears to be restricted low salinity habitats. These forms have traditionally been separated using size or angle projection dorsal mucronations (processes). However, because variability in development processes, it unclear whether this other morphological differences between form are ecophenotypic reflect distinct separate species....