Niurka R. Quintero, ∗ José A. Cuesta, † and Renato Alvarez-Nodarse ‡ Departamento de F́ısica Aplicada I, E. U. P., Universidad de Sevilla, Virgen de África 7, E-41011, Sevilla, Spain Grupo Interdisciplinar de Sistemas Complejos (GISC), Departamento de Matemáticas, Universidad Carlos III de Madrid, avda de la Universidad 30, E-28911 Leganés, Madrid, Spain Departamento de Análisis Matemático, Univ...

BACKGROUND AND AIMS Plastic responses to stress in components of reproduction can have important effects on plant fitness and can vary both within and between species. Responses may also depend on when in the life cycle stress occurs. Here, it is predicted that the timing of initiation of a stress, defoliation, would affect the pattern of plastic responses. These differences should occur becaus...

A Rhizobium strain isolated from stem nodules of the legume Sesbania rostrata was shown to grow on atmospheric nitrogen (N(2)) as the sole nitrogen source. Non-N(2)-fixing mutants isolated directly on agar plates formed nodules that did not fix N(2) when inoculated into the host plant.

Seed oils of Passiflora edulis, Jatropa curucas, Tinospora cordifolia, Sesbania grandiflora and Sapindus laurifolia were investigated for their antihelmintic property against Pheritima pasthuma. Three concentrations (10, 50 and 100 mg/ml) of each oil were studied in the bioassay, which involved the determination of time of paralysis and time of death of the worm. Sesbania grandiflora showed the...

Seed oils of Passiflora edulis, Jatropa curucas, Tinospora cordifolia, Sesbania grandiflora and Sapindus laurifolia were investigated for their antihelmintic property against Pheritima pasthuma. Three concentrations (10, 50 and 100 mg/ml) of each oil were studied in the bioassay, which involved the determination of time of paralysis and time of death of the worm. Sesbania grandiflora showed the...

Arctic fjord systems experience large amplitudes of change in temperature and radiation regime due to climate warming the related decrease sea ice. The resultant increase irradiance entering water column influences photosynthetic activity benthic pelagic primary producers. subtidal brown alga Desmarestia aculeata and intertidal red alga Palmaria palmata populate cold-tempera...

The main objectives of this study were to study the parasitic infestation of Lernaea cyprinacea in 4 cyprinids from the Choghakhor Lagoon, Chaharmahal - Bakhtyari Province, west of Iran. A total of 180 cyprinids including Cyprinus carpio (n=101), Carassius auratus (n=47), Capoeta aculeata (n=10) and Alburnus alburnus (n=22) caught, and were studied for Lernaea cyprinacea infestation. Prevalence...

The main objectives of this study were to study the parasitic infestation of Lernaea cyprinacea in 4 cyprinids from the Choghakhor Lagoon, Chaharmahal - Bakhtyari Province, west of Iran. A total of 180 cyprinids including Cyprinus carpio (n=101), Carassius auratus (n=47), Capoeta aculeata (n=10) and Alburnus alburnus (n=22) caught, and were studied for Lernaea cyprinacea infestation. Prevalence...

seed oils of passiflora edulis, jatropa curucas, tinospora cordifolia, sesbania grandiflora and sapindus laurifolia were investigated for their antihelmintic property against pheritima pasthuma. three concentrations (10, 50 and 100 mg/ml) of each oil were studied in the bioassay, which involved the determination of time of paralysis and time of death of the worm. sesbania grandiflora showed the...

Models of benthic community dynamics for the extensively studied, shallow rocky ecosystems in eastern Canada emphasize kelp-urchin interactions. These models may bias the perception of factors and processes that structure communities, for they largely overlook the possible contribution of other seaweeds to ecosystem resilience. We examined the persistence of the annual, acidic (H2SO4), brown se...