Hybridization has the potential to contribute to phenotypic and genetic variation and can be a major evolutionary mechanism. However, when hybridization is extensive it can also lead to the blurring of species boundaries and the emergence of cryptic species (i.e., two or more species not distinguishable morphologically). In this study, we address this hypothesis in Epidendrum, the largest Neotr...

Human trichinellosis occurs through consumption of raw or inadequately processed meat or meat products containing larvae of the parasitic nematodes of the genus Trichinella. Currently, nine species and three genotypes are recognized, of which T. spiralis, T. britovi and T. pseudospiralis have the highest public health relevance. To date, the differentiation of the larvae to the species and geno...

the production and proper utilization of medicinal plants in natural habitats need to review and identify the natural conditions and climate of the habitat of these plants and separating them from harmful and poisonous plants. the current study was aimed to introduce and determine the distribution of medicinal plants from lamiaceae family in mazandaran province as well as the introduction of na...

the systematics, morphology, distribution, biology, economic importance and conservation of the freshwater catfishes of iran are described, the species are illustrated, and a bibliography on these fishes is provided. there are four families with four genera and six species, one of which is an exotic; the family bagridae with one genus and species, mystus pelusius in the persian gulf, hormuz and...

Turkey with diverse ecologies is among the unique countries in terms of plant species and diversity. Among these species, naturally growing wild pears (Pyrus elaeagrifolia Pall.) are resistant to chlorosis drought could be used rootstock development programs. In present study, genetic diversity 96 pear genotypes collected from 11 different provinces (Kayseri, Ankara, Kahramanmara?, Adana, Nev?e...

The work was undertaken to study the variability in Citrus macroptera from five Garo hills district. Many important horticultural plant species, viz. are known have originated this region. Mont. is one of endangered, semi-wild species which found exist various parts NE region, including Meghalaya. Thirty accession different districts Hills, Meghalaya were collected its quantity and quality para...

Ranunculus L. with about 600 species is the largest genus in the Ranunculaceae. Problems in the taxonomy of the genus are due to high variability and polymorphism among different individuals and populations of certain species. Morphological characters of nectar scale have been considered as valuable taxonomical characters in some perennial species in some groups (Praemorsa, Grumosa, Rhizomatosa...

during a faunistic survey of natural enemies of spider mites of genus tetranychus in mashhad and vicinity, a predatory gall midge species belonging to the family cecidomyiidae was collected and identified as feltiella acarisuga vallot. f. acarisuga is one of the ten species in the genus feltiella and an important biological control agent of tetranychid mites has previously been reported from va...

The production of bananas is threatened by rapid spreading of various diseases and adverse environmental conditions. The preservation and characterization of banana diversity is essential for the purposes of crop improvement. The world's largest banana germplasm collection maintained at the Bioversity International Transit Centre (ITC) in Belgium is continuously expanded by new accessions of ed...

b a ckground: babesiosis is a haemoparasitic disease of domestic and wild animals caused by species of the genus bab esia . bab esia bigemina , b . bovis and b . divergens are known to be pathogenic in cattle. the disease is transmit- ted during blood feeding by infected ticks and is the most economically important tick-borne disease in tropical and subtropical areas. ixodid ticks are vectors i...