In this study we present an initial dataset of Mn/Ca and Fe/Ca ratios in tests of benthic foraminifera from the Peruvian oxygen minimum zone (OMZ) determined with SIMS. These results are a contribution to a better understanding of the proxy potential of these elemental ratios for ambient redox conditions. Foraminiferal tests are often contaminated by diagenetic coatings, like Mn rich carbonateo...

This study identified the most common epiphytes infecting the algal host Gracilaria chilensis on a farm in northern Chile. Simultaneously, the types of host–epiphyte interfaces were characterized and their relative abundance and temporal variability were monitored. Five types of anatomical relationships were detected. Infection type I included the epiphytes weakly attached to the surface of the...

Responses of the labellar sugar receptor of the fleshfly, Boettcherisca peregrina, were studied over a wide range of concentrations of several sugars (sucrose, maltose, glucose, fructose, and mannose) in single solutions and in mixtures. The results suggest (a) that the receptor sites are not completely differentiated for glucose and for fructose combination, (b) that the receptor site is compo...

The pupae of Sarcophaga peregrina received x-ray in the early pupal stage, and their oxygen consumption was measured throughout the pupal stage. Three patterns of radiation effects were found according to doses. With small irradiation doses, inhibitory effect on oxygen uptake was evident, but the survival time of the pupae was the same as that in non-irradiated, non-fed pupae. With medium irrad...

The methanol extract of Diospyros peregrina (Ebenaceae) bark (MEDP) were evaluated for antitumor activity and antioxidant activity against Dalton’s ascites lymphoma (DAL)-bearing swiss albino mice. The extract was administered at the doses of 200 and 400 mg/kg body weight per day for 14 days after 24 h of tumor inoculation. After the last dose and 18 h fasting, the mice were sacrificed. The pre...