Twenty-five species of leucosiid crabs are reported from Madang Province, Papua New Guinea. Of these, seven are new to science: two each are included in Alox Tan & Ng, 1995 and Tanaoa Galil, 2003, and one each in Ryphila Galil, 2009, Seulocia Galil, 2005, and Urnalana Galil, 2005. Fifteen additional species are new records for Papua New Guinea: Alox rugosum (Stimpson, 1858), Ancylodactyla nana ...

Se describen crinoideos de las morfoespecies Baryschyr anosus Moore y Jeffords, Cyclocaudex insaturatus Floricyclus angustimargo Cyclocion distictus Lamprosterigma erathense Jeffords Preptopremnum rugosum que proceden estratos del Misisípico Superior (Chesteriano) Pensilvánico Inferior-Medio (Morrowano-Desmoinesiano) la sierra Santa Teresa, Sonora. La distribución estas permitió establecer corr...

En Venezuela y el mundo, arroz es uno de los principales cereales que cubre requerimientos calóricos del ser humano. La productividad este cultivo afectada significativamente por las malezas, dentro destaca la paja rugosa (Ischaemum rugosum Salisb.) su capacidad modificar geometría dosel, condición desventajosa llamada acamado. Esta modificación arquitectura planta analizada comparada con una p...

Since beginning of mankind nature is the most important source of medicines. Bioactive compounds produced by living organisms can be used directly as drugs or as lead compounds for drug development. Besides, the natural material can be used as crude drug for preparation of powder or extracts. Plants have traditionally been used as a source of most medical systems and as such herbal medicines co...