Sound production, Seasonal isolation, Overwintering, Aquatic insects The water boatmen Corixa dentipes and C. punctata produce an acoustic mounting signal when beginning to copulate. Automated recording o f this signal over the entire life cycle of the animals reveals that the main mating period of C. punctata occurs in autumn and that o f C. dentipes, in the spring. In the case o f C. punctata...

eastern rock nuthatch (sitta tephronota) and western rock nuthatch (s. neumayer) are two closely related and sympatric species in iran, which have been known as the classical case of character displacement since 1950. nevertheless, some questions related their niche partitioning is still unanswered. this study was conducted to determine the diet differentiation, as an important niche dimension,...

during a survey on the identification of plant-parasitic nematodes associated with walnut in sanandej region (kurdistan province, western iran), a population of paratylenchus labiosus was collected and identified morphologically. description, illustrations and morphometrics of the species are given and comparisons are made between it and some related species. paratylenchus labiosus comes more c...

We develop the theory for computing the joint frequency spectra of alleles in two closely related species. We allow for arbitrary population growth in both species after they had a common ancestor. We focus on the case in which a single chromosome is sequenced from one of the species. We use classical diffusion theory to show that, if the ancestral species was at equilibrium under mutation and ...

An understanding of the breeding systems and pollination of agriculturally important plants is critical to germplasm improvement. Breeding system characteristics greatly influence the amount and spatial distribution of genetic variation within and amongst populations and influence the rarity and extinction vulnerability of plant species. Many woody bamboos have a long vegetative period (20-150 ...

Dermatophytes are the most common infectious agents responsible for superficial mycosis in humans and animals. Various species in this group of fungi show overlapping characteristics. We investigated the possibility that closely related dermatophyte species with different behaviours secrete distinct proteins when grown in the same culture medium. Protein patterns from culture filtrates of sever...

Halimocnemis commixta is recorded as a new species for the flora of Iran from Pistacia vera woodland remnants in NE Iran. It grows on open salty soils with several typical halophytic plants. The new species record is illustrated and compared with the closely related species. It can be distinguished from H. gamocarpa by its clustered flowers and irregularly horned fruits and differs from H. pilo...

background: dermatophytes are the most common causative agents of superficial mycoses. species identification of these fungi is important from therapeutic and epidemiological point of wive. traditional approaches for identification of dermatophytes at the species level, relying on macroscopic and microscopic features of the colonies, usually are time-consuming and unreliable in many circumstanc...