Xiphinema americanum Cobb, 1913 (Dorylaimida: Longidoridae): espécie-praga quarentenária para o Brasil
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چکیده
منابع مشابه
Redescription of Xiphinema americanum Cobb, 1913 with Comments on Its Morphometric Variations.
Xiphinema americanum is redescribed and illustrated from material collected from Arlington Cemetery, near Cobb's type locality (Falls Church, Virginia), Morphometric data showing variations within this species are given for three additional populations.
متن کاملRemarkable Diversity and Prevalence of Dagger Nematodes of the Genus Xiphinema Cobb, 1913 (Nematoda: Longidoridae) in Olives Revealed by Integrative Approaches
The genus Xiphinema includes a remarkable group of invertebrates of the phylum Nematoda comprising ectoparasitic animals of many wild and cultivated plants. Damage is caused by direct feeding on root cells and by vectoring nepoviruses that cause diseases on several crops. Precise identification of Xiphinema species is critical for launching appropriate control measures. We make available the fi...
متن کاملMorphological Variation among 23 Xiphinema americanum Populations.
Morphometrics of 23 United States populations of Xiphinema americanum sensu lato, sharing the characteristics of an offset lip region and conoid tail, were examined and analyzed statistically by canonical discriminant analysis (CDA). Specimens were collected from Arkansas, Georgia, Tennessee, Mississippi, Florida, Oklahoma, California, and North Dakota. Eleven measurements and body ratios obtai...
متن کاملRibosomal and Mitochondrial DNA Analyses of Xiphinema americanum-Group Populations.
The 18S ribosomal DNA (rDNA) and cytochrome oxidase I region of mitochondrial DNA (mtDNA) were sequenced for 24 Xiphinema americanum-group populations sourced from a number of geographically disparate locations. Sequences were subjected to phylogenetic analysis and compared. 18S rDNA strongly suggested that only X. pachtaicum, X. simile (two populations) and a X. americanum s.l. population from...
متن کاملXiphinema americanum as Affected by Soil Organic Matter and Porosity.
The effects of four soil types, soil porosity, particle size, and organic matter were tested on survival and migration of Xiphinema americanum. Survival and migration were significantly greater in silt loam than in clay loam and silty clay soils. Nematode numbers were significantly greater in softs planted with soybeans than in fallow softs. Nematode survival was greatest at the higher of two p...
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ژورنال
عنوان ژورنال: Ciência Rural
سال: 2005
ISSN: 0103-8478
DOI: 10.1590/s0103-84782005000100041