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The decomposition of Erythrina crista-galli L. (Leguminosa) leaf litter and its colonization by invertebrates were studied in a secondary channel of the Middle Paran´a River. This species is native to and very abundant ...

The critical factor in restoration and conservation of urban streams and their catchments is the human population, however the most of studies of urban ecosystems do not present social descriptors as concrete variables o...

The Bryn Gwyn (Chubut Province, Patagonia, Argentina) is a classic fossiliferous site, long recognised for its Cenozoic vertebrate record. However, its invertebrate content remains poorly documented. The Lower Miocene Ga...

La trucha arco iris (Oncorhynchus mykiss) es un predador visual que selecciona a sus presas según la talla y el color. Ejerce un efecto negativo en las comunidades y ecosistemas invadidos en las que son introducidas. El...

Gastropoda, with approximately 80,000 living species, is the largest class of Mollusca. Among gastropods, apple snails (family Ampullariidae) are globally distributed in tropical and subtropical freshwater ecosystems and...

Learning and memory are fundamental processes, influencing animal foraging behaviour and fitness success. Evaluating food nutritional quality, particularly of proteins and essential amino acids, involves complex sensory ...

Abstract Polyunsaturated fatty acids (PUFAs) are important nutrients that play critical roles in sea urchin reproduction and early development. Strongylocentrotus intermedius, the only commercially cultured sea urchin sp...

Los invertebrados marinos representan un componente importante de la biota oceánica y una fuente rica de compuestos nuevos y biológicamente activos, tales como antibacterianos, anticancerígenos, antiinflamatorios y an...

Caimans of the species Caiman latirostris, which are widely distributed in South America, are opportunistic predators. They show ontogenetic variation in diet, with young individuals initially feeding on invertebrates an...

Abstract The ability of organisms to learn and remember is crucial for their survival. This cognitive ability spans a wide range of organisms, including both vertebrates and invertebrates, yet has remained little studied...

Invasion by exotic trees into riparian areas has the potential to impact aquatic systems. We examined the effects of the exotic Salix fragilis (crack willow) on the structure and functioning of small streams in northern...

Leposternon microcephalum is a terrestrial amphisbaenid found in open and semi-open habitats in Bolivia, Paraguay, Argentina, Uruguay, and Brazil (Pérez and Ribeiro 2008. Check List 4:291–294). They are reported to be...

In the last decades there have been significant advances in our understanding of the cellular and subcellular mechanisms underlying changes in synaptic connectivity that subserve memory formation. The so called Theory of...

Abstract Parasites of the phylum Apicomplexa are among the main etiological agents of diseases in vertebrates and invertebrates, including humans and domestic animals. In the present study, 18 specimens of Pygocentrus na...

Abstract The use of animal-borne devices to measure acceleration has yielded insights into animal locomotion, behaviour and energy expenditure. We present the first systematic review of accelerometry on animals, spanning...

Mantises predominantly prey on invertebrates but occasionally also on small vertebrates. We describe the distributions of the three Polyspilota species (Mantodea: Mantidae) that occur in South Africa, based on 466 specim...

Temperature and nutrient availability are critical for the growth and development of aquatic invertebrates. However, an increase in these factors, derived from human stressors, could impact their food resources, such as ...

Fil: Migliori, María Laura. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Cronobiología; Argentina. Los ritmos circadianos (del latín circa y dies: cerca de 24 horas) tienen un...

El estudio de las poblaciones humanas antiguas es complejo y requiere de un enfoque interdisciplinario. La arqueología argentina está promoviendo el desarrollo de nuevas líneas de evidencias que incluyen espacios muy ...

"Integrating field and laboratory data is possible if there are strong geologic criteria to relate them. This challenge demands understanding rocks from the fabric and mineralogy up to the architectural elements of rock ...

Los organismos zoospóricos heterotróficos conforman un grupo heterogéneo perteneciente a los reinos Fungi y Straminipila y se hallan caracterizados por la presencia de talo cenocítico y esporas móviles (zoosporas). ...

En esta tesis se presentan los resultados del estudio del efecto de la contaminación sobre invertebrados del complejo zoobentonico en arroyos de la llanura pampeana, en el que se ha propuesto la comprobación de dos hip...

The chloroform extract of Cladonia substellata Vainio was assayed against larvae of Aedes aegypti, the mosquito vector of Dengue fever and Artemia salina. The extract was tested at concentrations ranging from 1 to 15 ppm...

Los nemátodos Anisakidae tienen una amplia distribución mundial y sus ciclos de vida transcurren principalmente en hospedadores marinos (peces, cefalópodos, reptiles, aves piscívoras y mamíferos). El ciclo de vida g...