نتایج جستجو برای: subgeneric classification
تعداد نتایج: 492505 فیلتر نتایج به سال:
The complete mitochondrial cytochrome oxidase II gene was sequenced from 17 black flies, representing 13 putative species, and used to infer phylogenetic relationships. A midge (Paratanytarsus sp.) and three mosquitoes (Aedes aegypti, Anopheles quadrimaculatus, and Culex quinquefasciatus) were used as outgroup taxa. All outgroup taxa were highly divergent from black flies. Phylogenetic trees ba...
Contrary to data on Acanthamoeba infections in humans, little is known about infections in fishes. The present study combines the description of strains isolated from fishes with presentation of an improved method for subgeneric classification. Acanthamoeba spp. were isolated aseptically from tissues of 14 (1.7%) of 833 asymptomatic fishes collected in rivers and streams in the Czech Republic. ...
Three new species of lac insect, Kerria Targioni-Tozzetti viz., Kerria manipurensis Ahmad & Ramamurthy sp. nov., Kerria maduraiensis Ahmad & Ramamurthy sp. nov., and Kerria thrissurensis Ahmad & Ramamurthy sp. nov. are described and illustrated. Kerria yunnanensis Ou & Hong is illustrated and redescribed, and a key to the known species of Kerria is provided. The usefulness of star pores as a di...
Haemoproteus (Haemosporida, Haemoproteidae) is the largest genus of avian haemosporidian parasites, some species of which cause lethal diseases in birds. Subgenera Parahaemoproteus and Haemoproteus are usually accepted in this genus; these parasites are transmitted by biting midges (Ceratopogonidae) and hippoboscid flies (Hippoboscidae), respectively. As of yet, species of Parahaemoproteus have...
خصوصیات تشریحی مربوط به پهنک و رگبرگ میانی ٢١ گونه از سرده Gypsophila به عنوان نماینده هفت بخشه پراکنده در ایران، چهار گونه از Saponaria، دو گونه از Allochrusa و یک گونه از Ankyropetalum از سردههای خویشاوند آن، مورد بررسی قرار میگیرد. درمجموع نه صفت تشریحی کمی و پنج صفت کیفی انتخاب و بررسی شد که مهمترین آنها عبارتند از: شکل کلی برش عرضی برگها (فقط در برگهای باریک) ، نوع مزوفیل )پشتی-شکمی ی...
The Indian sillago, Sillago indica McKay, Dutt & Sujatha, 1985, is redescribed on the basis of three paratypes and two newly collected specimens. The presence of two posterior extensions of the swimbladder instead of one suggests that it belongs to the subgenus Sillago. Comments on its subgeneric status and comparisons with members of Sillago (Sillago) are provided. Two specimens collected from...
Phylogenetic relationships between thirteen species of downy mildew and 103 species of Phytophthora (plant-pathogenic oomycetes) were investigated with two nuclear and four mitochondrial loci, using several likelihood-based approaches. Three Phytophthora taxa and all downy mildew taxa were excluded from the previously recognized subgeneric clades of Phytophthora, though all were strongly suppor...
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