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Showing 1 to 20 of 113 for “"species complex"”.
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Corydoras aeneus: a diploid-tetraploid fish species complex
… family Callichthyidae. Studies done with this species of fish showed that C. aeneus is a tetraploid with a chromosome number of 132 (Scheel et al. , 1972). Dunham et al. (1980) reported 120 chromosomes. The C. aeneus used in this study were bought from direct importers. We had four samples of …
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Evolutionary biology of the Armillaria mellea species complex
… accumulated with the North American Biological Species (NABS) of Armillaria. Forty strains including nine of the ten NABS and A. tabescens were used in this study. The normalized percent hybridization values ranged from 80%-100% similarity within a given biological species and ranged from …
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Sexual Reproduction and Signal Transduction in the Candida Species Complex
… as normal components of their microflora, these species are important human pathogens that have the ability to cause disease under conditions of immunosuppression or altered host defenses. The spectrum of disease caused by these species ranges from cutaneous infections of the skin, mouth, …
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Phylogeography of Marine Meiofaunal Nemerteans of the Ototyphlonemertes Fila Species Complex
… has obstructed studies of speciation and species boundaries among marine meiofauna. Ototyphlonemertes is a genus of meiofaunal nemerteans inhabiting the interstitial spaces of marine sediments. Its members lack pelagic larvae and dispersal potential is believed to be poor. A …
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Female Preference and Prezygotic Isolation In the Fundulus Notatus Species Complex
… isolation arises between closely related species is central to evolutionary research. Hybridization is widespread across taxa and shaped by interactions among environmental factors, evolutionary history, genetic compatibility, and behavior. These forces often operate nonlinearly across …
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Life cycle studies of the red tide dinoflagellate species complex Alexandrium tamarense
Blooms of toxic species within the algal dinoflagellate species complex Alexandrium tamarense may cause Paralytic Shellfish Poisoning, a significant and growing environmental threat worldwide. However, blooms of closely related nontoxic A. tamarense also occur, sometimes in close geographical …
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Life cycle studies of the red tide dinoflagellate species complex Alexandrium tamarense
Blooms of toxic species within the algal dinoflagellate species complex Alexandrium tamarense may cause Paralytic Shellfish Poisoning, a significant and growing environmental threat worldwide. However, blooms of closely related nontoxic A. tamarense also occur, sometimes in close geographical …
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Distribution, phylogenetics and habitat associations of a burrowing crayfish species complex in Illinois
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Evolutionary Genomics of Cystic Fibrosis and Nosocomial Pathogens of the Mycobacterium abscessus species complex
The $\textit{Mycobacterium abscessus}$ species complex (MABSC) consists of three subspecies, $\textit{M. a. abscessus}$, $\textit{M. a. massiliense}$ and $\textit{M. a. bolletii}$. All three of these subspecies are capable of causing opportunistic pulmonary and skin and soft tissue infections in …
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Inheritance of Dorsal Fin Coloration in the Metriaclima Species Complex (Teleostei: Cichlidae) of Lake Malawi
… giving rise to an assemblage of 300-500 species within the last one million years. Most widespread mbuna 'species' are characterized by the presence of local endemic populations, differing primarily in coloration and often of uncertain taxonomic rank. The recency and rapidity of …
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Biosystematics of the annual species of the Mimulus guttatus species complex in British Columbia, Canada
The M. guttatus species complex consists of several morphologically and ecologically distinct taxa, which, for the most part, are able to intercross; this makes it both an evolutionarily fascinating group to study and a taxonomic nightmare. In this study I found that on one ecologically diverse …
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Opportunities and Constraints of Sierra Nevada Meadow Restoration for the Mountain Yellow-Legged Frog Species Complex
… declines as a result of disease, introduced species, habitat loss, and climate change. The mountain yellow-legged frog (MYLF), once considered the most abundant vertebrate in the Sierra Nevada, has suffered dramatic population declines in recent decades, and implications of their decline …
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Using Mitochondrial Cytochrome C Oxidase Subunit I Sequence To Resolve The Springsnail Species Complex: Pyrgulopsis Micrococcus
… mollusks in North America, with over 130 extant species currently recognized. Most species are locally endemic, occurring in a single drainage, a few however, occur in multiple drainages. Pyrgulopsis micrococcus, a widespread species found in three distinct river systems, displays morphological …
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A Systematic Review of the Viola palmata Species Complex in the Gulf Coastal Plain and Southern Appalachians
<p>The <em>Viola palmata</em> species complex (Violaceae) consists of one to several species of acaulescent, heterophyllous, blue violets that are native to most of eastern North America. This study was conducted in order to evaluate the variation within the <em>V. palmata</em> species complex in …
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Phylogeny and color pattern evolution in a New World bumble bee (Hymenoptera: Apidae: Bombus: Pyrobombus) species complex
… one of the most common and widespread bumble bee species throughout Mexico and Central America. This robust and charismatic species possesses a highly variable color pattern throughout its wide distribution across montane and lowland regions, which raises the question of whether or not it is in …
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Resolving a Cryptic Species Complex: Application and Utility of Mitochondrial 16S and Nuclear Its1 Molecular Markers in Pyrgulopsis Micrococcus
… (Hydrobiidae: Nymphophilinae) is a cryptic species complex found among three river drainages in the Death Valley system. Jennings (2001) used mitochondrial cytochrome c oxidase subunit I (mtCOI) DNA sequences to examine intra-and inter- population genetic variation in 13 populations of …
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A study of the super-abundant Bemisia tabaci (Gennadius) species complex (Hemiptera: Aleyrodidae) in cassava mosaic disease pandemic areas in Tanzania
… (Hemiptera: Aleyrodidae) is a cryptic species complex comprising morphologically indistinguishable but genetically variable populations. It is the vector of cassava mosaic geminiviruses (CMGs) causing cassava mosaic (CMD) disease to cassava (Manihot esculenta Crantz). After the outbreak …
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Blood host preferences and competitive inter-species dynamics within an African malaria vector species complex inferred from signs of animal activity around aquatic larval habitats distributed across a gradient of fully domesticated to fully pristine ecosystems in southern Tanzania
… available, it is the predominant member sibling species of the Anopheles gambiae complex. However, little is known about its population dynamics or blood utilization behaviours in pristine natural ecosystems, where these known preferred hosts are scarce or completely absent. This study …
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Relações filogenéticas do complexo de espécies "Cichlasoma" facetum com clados da tribo Heroini (Perciformes: Cichlidae)
… relationships between the "Cichlasoma" facetum species complex and clades of the tribe Heroini, subfamily Cichlasomatinae, including taxa of Central and North America, are examined. The analysis is uniquely based on morpho-osteology of twenty-one species and includes five unpublished characters; …
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The Mongolian Remodeling and the structure of Anoplocephalid cestode diversity
… The hyper-diverse <em>Paranoplocephala </em>species complex (family: Anoplocephalidae) infect rodents throughout the Holarctic and present an opportunity to investigate the consequences of ecological disruption on the diversity of parasites. Here, I use whole mitogenome sequencing to produce …
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