Results 1 to 10 of about 15,558,174 (350)

The Case for Adopting the “Species Complex” Nomenclature for the Etiologic Agents of Cryptococcosis

open access: yesMSphere, 2017
Cryptococcosis is a potentially lethal disease of humans/animals caused by Cryptococcus neoformans and Cryptococcus gattii. Distinction between the two species is based on phenotypic and genotypic characteristics.
K. Kwon-Chung   +32 more
semanticscholar   +3 more sources

Making the most of clade selection [PDF]

open access: yes, 2017
Clade selection is unpopular with philosophers who otherwise accept multilevel selection theory. Clades cannot reproduce, and reproduction is widely thought necessary for evolution by natural selection, especially of complex adaptations.
Doolittle, W. Ford
core   +1 more source

Saved by the Shell: Molecular Analysis Detects the Cryptic Sea Hare, Aplysia concava G. B. Sowerby I, 1833 (Mollusca: Heterobranchia: Aplysiidae), from Oceania, with a Redescription

open access: yesTaxonomy, 2021
A recent taxonomic revision split the circumglobal sea hare Aplysia parvula into 10 constituent taxa, of which only three are likely to be found in the Southern Pacific. This prompted an investigation of animals previously identified as A.
Matt J. Nimbs, Nerida G. Wilson
doaj   +1 more source

Phylogeny and taxonomy of the Ophiostoma piceae complex and the Dutch elm disease fungi [PDF]

open access: yes, 2001
The Ophiostoma piceae complex forms a monophyletic group of insect-dispersed pyrenomycetes with synnemata (Pesotum) and micronematous (Sporothrix) synanamorphs. Other species of Ophios-toma outside of the O.
Farrell, Roberta L.   +4 more
core   +2 more sources

Cytological and isoenzyme analysis of the Bucay and Quevedo cytotypes of the onchocerciasis vector Simulium exiguum (Diptera: Simuliidae) in Ecuador

open access: yesMemorias do Instituto Oswaldo Cruz, 1993
Four cytotypes of Simulium exiguum occur in Ecuador, where this morphospecies is the primary vector of onchocerciasis. In this paper, we give the first full description of the banding pattern of the larval polytene chromosomes of the Quevedo cytotypes ...
M. Charalambous   +4 more
doaj   +1 more source

Species Delimitation and Conservation in Taxonomically Challenging Lineages: The Case of Two Clades of Capurodendron (Sapotaceae) in Madagascar

open access: yesPlants, 2021
Capurodendron is the largest endemic genus of plants from Madagascar, with around 76% of its species threatened by deforestation and illegal logging.
Carlos G. Boluda   +4 more
doaj   +1 more source

Species Abundance Patterns in Complex Evolutionary Dynamics

open access: yes, 2004
An analytic theory of species abundance patterns (SAPs) in biological networks is presented. The theory is based on multispecies replicator dynamics equivalent to the Lotka-Volterra equation, with diverse interspecies interactions.
A. S. Corbet   +14 more
core   +1 more source

Increased copulation duration before ejaculate transfer is associated with larger spermatophores, and male genital titillators, across bushcricket taxa [PDF]

open access: yes, 2011
Copulation duration varies considerably across species, but few comparative studies have examined factors that might underlie such variation. We examined the relationship between copulation duration (prior to spermatophore transfer), the complexity of ...
Alcock   +70 more
core   +2 more sources

A new species in the Spirobranchus kraussii complex (Annelida: Serpulidae) from Australia

open access: yesRecords of the Australian Museum
The blue coral-worm Spirobranchus kraussii (Baird, 1864) (Annelida: Serpulidae) was originally described from South Africa and reported as a widely distributed Indo-Pacific species, however it is now recognized as a complex of regionally distributed ...
Ivison Brandao   +2 more
doaj   +1 more source

A brain and a head for a different habitat: Size variation in four morphs of Arctic charr (Salvelinus alpinus (L.)) in a deep oligotrophic lake

open access: yesEcology and Evolution, 2020
Adaptive radiation is the diversification of species to different ecological niches and has repeatedly occurred in different salmonid fish of postglacial lakes.
Ana‐Maria Peris Tamayo   +4 more
doaj   +1 more source

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