Lucía Saveanu

• PhD
• Researcher at Universidad Nacional del Sur

Pomacea canaliculata is native to South America and has become a widely distributed agricultural and environmental pest in southern China. Previous studies have primarily focused on the tolerance of P. canaliculata to various environmental factors, and compared non-native invasive P. canaliculata with natives or non-invasive congeners. However, the...

Sediment represents both a habitat and a trophic resource for many aquatic organisms, commonly known as deposit feeders. One of the most important freshwater invaders around the world is the polyphagous and opportunistic apple snail Pomacea canaliculata, in which deposit feeding has not been reported. Our aims were to study the frequency of sedimen...

Melanoides tuberculata is a freshwater snail native to Old World tropical areas but has invaded tropical and subtropical regions around the world. In Argentina, populations established in natural environments were reported from northeastern tropical provinces. Here we report for the first time the presence of M. tuberculata in a geothermally warmed...

The trophic ecology of the invasive apple snail Pomacea canaliculata was intensely investigated because of the impacts of its grazing on aquatic vegetation, including crops. However, this freshwater snail also gathers food from the water surface using a pedal funnel, a distinctive trophic behavior called pedal surface collecting. We investigated th...

Invasive freshwater molluscs have potential negative impacts on biodiversity, ecosystem functioning and human activities. A sampling program was conducted in five watercourses from SW Buenos Aires province to detect exotic species with invasive potential. Six species of exotic molluscs and six native ones were recorded. Two exotic species have incr...

Apple snails are large freshwater snails belonging to the family Ampullariidae that inhabit tropical to temperate areas. The South American apple snails Pomacea canaliculata and Pomacea maculata have been introduced to other continents where they have successfully established and spread. Our review aims to analyse the mechanisms of the impacts that...

High fecundity often contributes to successful invasives. In molluscs, this may be facilitated by the albumen gland-capsule gland complex, which in gastropods secretes the egg perivitelline fluid that nourishes and protects embryos. The biochemistry of the albumen gland-capsule gland complex and its relationship with fecundity remain largely unknow...

Pomacea canaliculata is in many respects the best known species of apple snails (family Ampullariidae), although the available information is both fragmentary and geographically biased. Most studies in its non-native range have focused on applied aspects in managed or artificial wetlands in various countries in Southeast Asia. In its natural range...

Trophic flexibility is a relevant trait in the potential for organisms to establish widely, maintain high abundances and spread after invasion. Pomacea canaliculata is an apple snail that feeds primarily on aquatic macrophytes, although it also consumes other trophic resources that likely play an important role in its persistence and contribute to...

Lithic particles are a common feature in the digestive tract of freshwater snails. Their role in the digestive processes has been demonstrated in some microphytophagous and detritivorous species, as they enhance growth, assimilation and reproduction. It has been suggested that they could have the same function in Pomacea canaliculata, a macrophytop...

Apple snails are known for the strong impacts they provoke in wetlands and aquatic crops by their macrophytophagous habits. Interestingly, they are able to persist after they have eradicated most palatable aquatic macrophytes in the invaded wetlands. Pedal surface collecting is a distinctive mechanism that apple snails use to capture materials in t...

Apple snails (Ampullariidae) are among the largest and most ecologically important freshwater snails. The introduction of multiple species has reinvigorated the field and spurred a burgeoning body of research since the early 1990s, particularly regarding two species introduced to Asian wetlands and elsewhere, where they have become serious agricult...

Pomacea canaliculata is a freshwater gastropod native to southern South America and is listed among the world's 100 worst invaders. Diverse food sources can be exploited by this apple snail, including snails with gelatinous and subaquatic egg masses. Records of ingestion of their own egg masses (egg cannibalism), which are aerial and calcareous, ha...

Phenology is the study of predictably occurring biological events and their relationship to environmental conditions as light, temperature, humidity, etc. The aims of this study were to describe fl owering phenological phases of Ulmus pumila L. in Bahía Blanca city and relate fl owering stage with weather data of minimum and maximum temperatures. D...

La fenología es el estudio de los fenómenos periódicos que ocurren en los seres vivos y sus relaciones con condiciones ambientales como luz, temperatura, humedad, etc. Los objetivos de este trabajo fueron describir las fases fenológicas durante la fl oración deUlmus pumilaL. para la ciudad de Bahía Blanca y relacionar la floración con datos meteoro...

Pomacea canaliculate is a freshwater snail native to subtropical-temperate South America that has invaded several countries around the world. Temperature is probably one of the main limitations to the expansion of this and other apple snails to higher latitudes in invaded regions. Egg masses are aerial, and the duration of embryonic development var...

Apple snails are freshwater gastropods with highly diverse feeding mechanisms (shredding, scraping and collecting) to exploit diverse food sources. Pomacea canaliculata is listed among the worlds 100 worst invaders, mainly due to its effects on aquatic crops and submersed macrophytes through shredding, its main feeding mechanism. In one of the alte...