Distribution and habitat preferences of two grapsid crab species in Mar Chiquita Lagoon (Province of Buenos Aires, Argentina)
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Pollen morphology of Oxalis species from Buenos Aires province (Argentina).
Pollen morphology and the degree of pollen variability within nine species and two varieties of Oxalis species from Buenos Aires Province (Argentina) were studied using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Oxalis pollen grain is generally 3-colpate and the shape is prolate spheroidal, oblate spheroidal or spheroidal. The exine is ...
متن کاملThe role of the invasive polychaete Ficopomatus enigmaticus (Fauvel, 1923) (Serpulidae) as facilitator of parasite transmission in Mar Chiquita coastal lagoon (Buenos Aires, Argentina).
In Mar Chiquita coastal lagoon (Argentina), the reefs of the invasive polychaete Ficopomatus enigmaticus (Serpulidae) serve as concentration areas for invertebrates and vertebrates and as potential foci of parasite transmission (mainly digeneans). To analyse the role of F. enigmaticus as facilitator of parasite transmission, and to evaluate the influence of the habitats selected by 2 species of...
متن کاملOrbicules diversity in Oxalis species from the province of Buenos Aires (Argentina).
Eleven Oxalis L. species from the province of Buenos Aires (Argentina) were investigated with scanning and transmission electron microscopes. We identified four different types and two subtypes of orbicules. We conclude that the close morphological similarity between these species is also reflected in their orbicules, and we suggest that the orbicules morphology may be a useful character in sys...
متن کاملHost plant selection of two Mansonia blanchard species (Diptera: Culicidae) in a heterogeneous habitat of Buenos Aires City, Argentina.
Larvae and pupae of the genus Mansonia Blanchard attach to the roots of aquatic plants by means of modified structures to obtain oxygen. A study of the association of larval Ma. indubitans and Ma. titillans with floating macrophytes was conducted at Macies Pond, Argentina. Fifty-four sampling units were taken from January to May 2003. Three genera of host plants were considered: Pistia, Limnobi...
متن کاملPrevalence of cholelithiasis in Buenos Aires, Argentina.
BACKGROUND Cholelithiasis is an important cause of morbidity in the world and it varies significantly depending on the region of study. OBJECTIVE To assess the prevalence of cholelithiasis in Buenos Aires. MATERIAL AND METHODS This is a cross-sectional, descriptive, observational study performed in a public hospital with tertiary care in Gastrointestinal Surgery. From July 2010 to December ...
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ژورنال
عنوان ژورنال: Helgoländer Meeresuntersuchungen
سال: 1994
ISSN: 0174-3597,1438-3888
DOI: 10.1007/bf02366202