Intraspecific Comparison
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Morphological and morphometric variations of Dicrocoelium rileyi (Digenea: Dicrocoelidae) parasitizing Tadarida brasiliensis (Chiroptera: Molosiidae) in Mexico
Abstract: Fifty-five adult Dicrocoelium rileyiMacy, 1931 parasitizing Tadarida brasiliensis (Geoffroy, 1824) from Durango, Nuevo Leon, Puebla, Zacatecas and Mexico State were morphologically described and morphometrically analyzed. To evaluate the degree of variation among populations from the five localities, 27 morphometric measures of this species were t
An. Acad. Bras. Ciênc.. Publicado em: 25/11/2019
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2. Geographic variation of Moenkhausia bonita (Characiformes: Characidae) in the rio de la Plata basin, with distributional comments on M. intermedia
ABSTRACT Moenkhausia bonita occurs in numerous additional localities from the Bermejo, Paraná, Paraguay, and Uruguay river basins. Given that this finding greatly expands the distributional range of M. bonita, we carried out an intraspecific comparison, using multivariate methods for 18 morphometric and eight meristic characters taken from a comprehensive s
Neotrop. ichthyol.. Publicado em: 11/03/2019
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3. Interações tróficas de peixes marinhos no Estado de São Paulo: banco de dados e comparações espaço-temporais / Trophic interactions of marine fish in the State of São Paulo: database and spatial-temporal comparisons
The marine ecosystems of São Paulo State are under intense anthropic pressure. Considering that trophic studies of fishes are essential to the management of ecosystems and fisheries, a fish stomach content database was built in order to summarize the available data in the region. Primary (unpublished) and secondary (published) data were inserted, representi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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4. Editorial
From a series of biological samples collected from different freshwater environments in Costa Rica, Central America, the exotic Asian cyclopoid Mesocyclops thermocyclopoides Harada, 1931 was identified. We analyzed the morphology and appendage ornamentation of different Neotropical populations of this species, including specimens from Honduras, southeastern
Zoologia (Curitiba). Publicado em: 2011-10
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5. Multiple queens in founding colonies of the neotropical ant Pachycondyla striata smith (Formicidae: Ponerinae)
In social insects, the typical mode of colony foundation occurs when a single queen is inseminated by a male and establishes a new colony, although we can find interspecific and intraspecific variations in queen number and queen-mating frequencies in a single colony. This study aimed to verify the queen number in Pachycondyla striata (Smith) colonies and to
Neotropical Entomology. Publicado em: 2011-06
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6. Dieta e táticas de forrageamento de Formicivora littoralis (Aves: Thamnophilidae) na Restinga da Massambaba, Araruama, Rio de Janeiro / Diet and foraging tactics of Formicivora littoralis (Bird: Thamnophilidae) in Massambaba restinga, Araruama, Rio de Janeiro
A dieta de uma dada espécie é determinada em parte por suas táticas de forrageamento, assim como pela distribuição das presas. A partir da análise conjunta dos dados de dieta, comportamento alimentar, disponibilidade de recursos alimentares e morfometria é possível identificar diferenças entre os sexos na exploração dos recursos e relacioná-las a
Publicado em: 2010
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7. Genotipic variability study of Rhipicephalus sanguineus (Latreille, 1806) (Acari, Ixodidae) from different geografic regions of Brazil. / Estudo da variabilidade genotípica de Rhipicephalus sanguineus (Latreille, 1806) (Acari, Ixodidae) de diferentes regiões geográficas do Brasil
The taxonomic status of ticks of the Rhipicephalus sanguineus group is difficult to be determined by phenotypic methods and has been object of frequent revisions and ongoing debate. The differentiation of species within this group has clinical importance, especially in veterinary medicine due to transmission of different pathogens. The objective of this stud
Publicado em: 2008
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8. Análise genômica e sequenciamento automático de rDNA em populações de fusarium oxysporum
Fusarium oxysporum complex causes wilt disease in a wide variety of plants and are grouped into formae speciales based on their host range. Twenty-one isolates of the complex which represented F. oxysporum, f. sp. cubense, f. sp. lycopersici, f. sp. passiflorae, and f. sp. capsici were assessed for genetic diversity using RFLPs of the IGS region, RAPD-PCR, a
Publicado em: 2004
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9. Comparative studies on the biology and filarial susceptibility of selected blood-feeding and autogenous Aedes togoi sub-colonies
Blood-feeding and autogenous sub-colonies were selected from a laboratory, stock colony of Aedes togoi, which was originally collected from Koh Nom Sao, Chanthaburi province, Southeast Thailand. Comparative biology and filarial susceptibility between the two sub-colonies (blood-feeding: F11, F13; autogeny: F38, F40) were investigated to evaluate their viabil
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-06
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10. Striking sequence similarity in inter- and intra-specific comparisons of class I SLG alleles from Brassica oleracea and Brassica campestris: Implications for the evolution and recognition mechanism
Self-incompatibility in Brassica is controlled by a single multi-allelic locus (S locus), which contains at least two highly polymorphic genes expressed in the stigma: an S glycoprotein gene (SLG) and an S receptor kinase gene (SRK). The putative ligand-binding domain of SRK exhibits high homology to the secretory protein SLG, and it is believed that SLG and
The National Academy of Sciences of the USA.
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11. Extensive polymorphism in the mitochondrial DNA of apes.
Ape species are 2-10 times more variable than the human species with respect to the nucleotide sequence of mtDNA, even though ape populations have been smaller than the human population for at least 10,000 years. This finding was made by comparing purified mtDNAs from 27 individuals with the aid of 25 restriction endonucleases; for an additional 59 individua
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12. A Test of Neutral Molecular Evolution Based on Nucleotide Data
The neutral theory of molecular evolution predicts that regions of the genome that evolve at high rates, as revealed by interspecific DNA sequence comparisons, will also exhibit high levels of polymorphism within species. We present here a conservative statistical test of this prediction based on a constant-rate neutral model. The test requires data from an