Cultivated coffee trees are under serious threat from climate change, disease and insect pests. The homogeneity of the crop makes it particularly vulnerable: nearly all of the world’s cultivated coffee originated with a handful of plants grown in Ethiopia. Little scientific research has gone into cultivating coffee, but that situation is beginning to change. Scientists are now hurrying to intro...

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Data on 17348 weaning weight records from a beef cattle crossbreeding operation were used to determine the effect of outliers on regression coefficients. Different criteria were used for detecting potential influential points. Eliminating a small number (932 or 5.4%) influential points resulted in the improvement of the model fitted. The R values increased from 41% to 49% while the mean square ...

INTRODUCTION For the first time we provide the description of the melanic (dark) morphotype of Rhodnius nasutus and determine the pattern of genetic inheritance for this characteristic. METHODS Dark morph R. nasutus specimens were crossbred with standard (typically patterned) R. nasutus. RESULTS We present the first occurrence of the melanic morphotype in the genus Rhodnius. The crossbreedi...