Little is known about the relationship between mycoviruses and fungal secondary metabolism. An in vivo replication system from Penicillium stoloniferum strain NRRL 5267 has been developed to test various fungal products and other antimetabolites against P. stolonlferum fast-moving virus (PsV·f) replication. Initially, cycloheximide was investigated in this test system because of its known antif...

The parasite fauna of catfish, Pimelodus pohli, from the São Francisco River Basin is presented. A total of 45 catfish from the upper São Francisco River (45°15'44″W 18°13'25″S), were examined from July 2009 to September 2011. Forty-three catfish (95.5%) were infected by at least one parasite species, with 885 parasite specimens being found, distributed across 17 species: Monogenea (Demidosperm...

Fifty specimens of Cichla piquiti were collected from the Paraná River downstream of the Ilha Solteira Hydroelectric Power Station in Brazil and surveyed for endohelminth parasites. All fish were parasitised by at least one helminth species (overall prevalence [P] = 100%). Eight parasite taxa were present: the nematode Procamallanus (Procamallanus) peraccuratus in the intestines; third-stage la...

Many species exhibiting hemochorial placentation experience an accumulation of macrophages in the endometrium during pregnancy. For the present study, it was tested whether macrophages also accumulate in the endometrium of the sheep, which is a species undergoing an epitheliochorial placentation. An additional objective was to determine whether regulation of endometrial macrophage number occurs...

The paper is devoted to the question is the Cartesian product X × P of a compact Hausdorff space X and a polyhedron P a product in the strong shape category SSh of topological spaces. The question consists of two parts. The existence part, which asks whether, for a topological space Z, for a strong shape morphism F : Z → X and a homotopy class of mappings [g] : Z → P , there exists a strong sha...

Let T be an algebraic automorphism of Tm having the following property: the characteristic polynomial of its matrix is irreducible over Q, and a Pisot number β is one of its roots. We define the mapping φt acting from the twosided β-compactum onto Tm as follows: φt(ε̄) = ∑ k∈Z εkT −kt, where t is a fundamental homoclinic point for T , i.e., a point homoclinic to 0 such that the linear span of it...

Several species of the genus Fusarium can cause apple fruit to rot while stored. Since Fusarium taxonomy is very complex and has constantly been revised and updated over the last years, the aim of this study was to identify Fusarium species from rotten apples, based on combined morphological characteristics and molecular data. We identified 32 Fusarium isolates from rotten apple fruit of cultiv...