Labidiasteroside A, a Novel Saponin from the Antartic Starfish Labidiaster Annulatus M.E. Díaz de Vivar, M.S. Maier and A.M. Seldes Facultad de Ciencias Naturales, Universidad Nacional de La Patagonia “San Juan Bosco”, Puerto Madryn, Chubut, Argentina Depto. de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, (1428) Bueno...

The ticks Rhipicephalus (Boophilus) annulatus and R. (B.) microplus, commonly known as cattle and southern cattle tick, respectively, impede the development and sustainability of livestock industries throughout tropical and other world regions. They affect animal productivity and wellbeing directly through their obligate blood-feeding habit and indirectly by serving as vectors of the infectious...

Four new species of the genus Hemicriconemoides (H. californianus n.sp., H. taiwanensis n.sp., H. annulatus n. sp., and H. nitida n.sp.) are described. The range of total length of H. mangiferae is increased on the basis of specimens collected in Israel, Observations on H. mangiferae and H. litchi support the validity of H. litchi as distinct from H. mangiferae.

The epizootiology of the microsporidium Amblyospora albifasciati was studied in natural populations of its definitive host, a multivoltine, neotropical, floodwater mosquito, Aedes albifasciatus, and its intermediate copepod host, Mesocyclops annulatus, in an ephemeral floodwater habitat during a 12-month period. A. albifasciati was enzootic in mosquitoes. Vertically (transovarially) transmitted...

Streptomyces species has been commonly reported as a cause of mycetoma. Invasive streptomyces infections are rare. We report a case of late onset neonatal septicemia caused by Streptomyces annulatus in a home delivered baby, which was identified based on morphology and biochemical characteristics. Invasive streptomyces infections may be more common than these isolated case reports.

BACKGROUND The aim of this study was to investigate the 'acaricidal effect' of Zataria multiflora and Artemisia annua essential oils on Rhipicephalus (Boophilus) annulatus. METHODS This study was carried out in 2009 in the Laboratory of Parasitology of the Faculty of Veterinary Medicine of Shahrekord University, west central Iran. Six dilutions (5, 10, 20, 40, 60 and 80 µL/cm(3)) of both esse...

A new multivalvulid myxosporean species, Kudoa dianae sp. n., is described from bullseye puffer, Sphoeroides annulatus (Jenyns) (Tetraodontiformes: Tetraodontidae). Plasmodia develop in extramuscular sites, in the wall of oesophagus and less frequently on mesenteries. Mature spores can reach lumen of the digestive tract directly by disruption of plasmodial wall or via macrophage transport to th...