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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...

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...

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 Upper Miocene-Lower Pliocene Río Negro Formation (Río Negro Province, Argentina) contains diverse and abundant continental trace fossils. The purpose of this contribution is to recognize distinctive trace fossil as...

The Pholcus nagasakiensis species group is a relatively small group, comprising only five species. Of these, four species inhabit Kyushu Island in mainland Japan, the Ryukyu Archipelago and the Diaoyu Islands of China, w...

The dataset of free-living soil nematodes from Colección Helmintológica of Museo de La Plata is presented. There is a large knowledge gap regarding soil nematodes especially in Argentina but also in the Neotropical reg...

Glyphosate is the most used pesticide in Argentina. Hyalella curvispina is a widely distributed and commonly abundant component of the invertebrate assemblages in shallow waters of southern South America. The aim of this...

The acute toxicity of cypermethrin to the amphipod Hyalella curvispina was evaluated by means of a toxicity test under laboratory conditions. Cypermethrin is one of the most widely used insecticides in Argentina. H. curv...

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...

El alga invasora Undaria pinnatifida (Phaeophyceae, Laminariales) fue reportada por primera vez en Golfo Nuevo en 1992, dispersándose ampliamente a lo largo de 170 km de costa en el norte de la Patagonia, Argentina. Obs...

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...

Abstract The European Commission authorized the use of dried yellow mealworm (Tenebrio molitor - TM) as a food ingredient under Regulation EU 2021/882. As TM emerges as an important allergen source, sensitization and all...

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...

ABSTRACT In Brazil, some studies have indicated that Neorickettsia risticii circulates in horses, but it is unclear which are the possible intermediate vectors of this bacterium in the country. The aim of this study was ...

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...