Fabián Gastón Jara

Fabián Gastón Jara
Centro Científico Tecnológico Conicet Comahue · Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA)

PhD in Biology
new research: Impacts of multiple stressors on life-history traits of aquatic macroinvertebrates of temporary wetlands

About

40
Publications
7,853
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384
Citations
Citations since 2016
23 Research Items
252 Citations
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Introduction
Fabián Gastón Jara currently works at the Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA), Centro Científico Tecnológico Conicet Comahue. Fabián does research in Zoology and Ecology. Their current project is 'Biotic interactions under climate change: the role of facilitation between aquatic insects and larval anuran in the processing of organic matter in temporary wetlands'.
Additional affiliations
August 2020 - present
Centro Científico Tecnológico Conicet Comahue
Position
  • investigador Adjunto
Education
September 2005 - June 2010
National University of Comahue
Field of study
  • Biology
March 1997 - August 2002
National University of Comahue
Field of study
  • Biology

Publications

Publications (40)
Article
Full-text available
Climate change induced phenological variation in amphibians can disrupt time-sensitive processes such as breeding, hatching, and metamorphosis, and can consequently alter size-dependent interactions such as predation. Temperature can further alter size-dependent, predator-prey relationships through changes in species’ behavior. We thus hypothesized...
Article
Full-text available
Phenology has an important effect on the life strategies of species that live in temporary waters. Predaceous aquatic insects are key components of communities associated with seasonal ponds. Since the life cycles of these predators and their prey are unusual in that they occur at different moments of the pond hydroperiod, differences in temporal o...
Preprint
Full-text available
The selection of breeding habitat is crucial for many ectotherms inhabiting aquatic environments. Giant water bugs offer an excellent model for analysis of how temperature affects breeding habitat selection and reproductive success. This work focuses on whether wetland temperature influences habitat selection and offspring success in the giant wate...
Article
Full-text available
Anurans have diverse reproductive modes, and some species of the austral forests of Patagonia have become specialized in terrestrial reproduction. Batrachyla taeniata is one of these species: it inhabits wetlands, lays its eggs during late summer and fall in terrestrial conditions, and has overwintering tadpoles. We studied a population of B. taeni...
Article
Full-text available
The genus Verger Navás 1918 (Trichoptera: Limnephilidae), is a Neotropical genus exclusive to the Andean region, with most of its species distributed from Tierra del Fuego to north central Chile and Argentina. Currently, 20 species of the genus have been described from adults and only six larvae have been associated and diagnosed. The ecology of th...
Article
Full-text available
Hylorina sylvatica (Anura: Batrachyidae), or the emerald frog, is a pond-breeding anuran endemic to the austral temperate forests of Chile and Argentina. It is considered a vulnerable species in Argentina, where it has a narrow distribution; records and biological information relating to the frog in this area are scarce. In this study, conducted in...
Article
Full-text available
Abstract The genus Verger Navás 1918 (Trichoptera: Limnephilidae), is a Neotropical genus exclusive to the Andean region, with most of its species distributed from Tierra del Fuego to north central Chile and Argentina. Currently, 20 species of the genus have been described from adults and only six larvae have been associated and diagnosed. The ecol...
Article
Full-text available
Hylorina sylvatica is an anuran endemic to the austral temperate forests of Chile and Argentina, whose biology and ecology are poorly understood. The objectives of this study were to describe the reproductive phenology and embryonic and larval development of H. sylvatica. Periodic samplings were carried out in a wetland located in a humid forest in...
Preprint
Full-text available
Small wetlands have a high conservation value due to their importance as biodiversity hot spots. Despite this, they are nowadays at risk due to global change variables. We surveyed a set of seasonal wetlands located in Andean Patagonian forests which are the less studied aquatic systems. The wetlands selected presented different degrees of human im...
Chapter
Full-text available
El objetivo principal de este Manual es el desarrollo de un compendio de técnicas y protocolos estándares para el inventario y monitoreo de poblaciones de anfibios, actualizado con los procedimientos, herramientas y técnicas de análisis más recientes y adaptado a las condiciones y realidades nacionales. Su contenido está destinado a ayudar a supera...
Article
Full-text available
Aim Oomycetes are one of the most widespread and destructive parasitic groups in the world. The first infection of oomycetes on copepod Parabroteas sarsi Daday 1901 was recently recorded in America. Oomycetes infection on this species makes their eggs unviable and could differentially affect the survival of females. The aim of this study was to tra...
Article
Full-text available
Predation by aquatic insects is the first cause of tadpole mortality, together with the desiccation of the waterbodies. In this work we report for the first time natural predation events of Hylorina sylvatica tadpoles by aquatic insects. The attacks were recorded in a shallow pond located in a humid forest of austral beech (coihue), in the Llao Lla...
Article
Full-text available
Anuran amphibians of the Andean-Patagonian forest show a wide variety of adaptations to different aquatic environments and regional environmental conditions. These adaptations include particularities in their life cycles, such as that all or most of the cycle occur out of water. This work summarizes information about the life cycle of the anuran Ba...
Article
Full-text available
A lo largo de sus vidas, desde su concepción hasta su muerte, las especies de plantas y animales experimentan cambios (crecimiento y desarrollo) y eventos (reproducción) únicos cuya recopilación forma parte de sus historias de vida. Cada una de ellas es particular y puede que las poblaciones de una misma especie presenten historias de vida muy disi...
Article
Full-text available
Copepods are hosts to various oomycete parasite species, but the effects of pathogens on copepod populations have rarely been studied. This study aimed to characterize oomycete infection in the freshwater copepod Parabroteas sarsi in a temporary pond in Patagonia (Argentina). A complete hydroperiod was monitored, evaluating environmental variables...
Article
Full-text available
We analyzed the effect of hydroperiod and water temperature on the life cycle of the giant water bug Belostoma bifoveolatum in two wetlands of northwestern Patagonia, Argentina. In each wetland, we estimated adult and nymph abundance and monitored water depth and temperature throughout the study period. We determined the age structure of the giant...
Article
Full-text available
Most studies of predator-induced plasticity have focused on documenting how prey species respond to predators by modifying phenotypic traits and how traits correlate with fitness. We have previously shown that Pleurodema thaul tadpoles exposed to the dragonfly Rhionaeschna variegata responded strongly by showing morphological changes, less activity...
Article
Full-text available
The effect of predators on prey size structure in aquatic communities has been well studied in lentic permanent habits, but less attention has been placed on temporary environments. The biota of seasonal Andean wetlands in Patagonia is basically formed by crustaceans, insects and pond-breeding amphibians. The dominant predators in these wetlands ar...
Article
Full-text available
Body size strongly influences the type and strength of species interactions. Animals with complex life cycles, such as dragonflies, usually go through different stages that include a variation in body size and may involve shifts in their trophic position in the food web. This investigation analyzes the position of the dragonfly Rhionaeschna variega...
Article
Full-text available
The main purpose of this work was to study the richness, phenology and abundance of predatory insects throughout the hydroperiod and how they relate to the environmental parameters in lentic bodies of water in northwest Patagonia. Nineteen fishless wetlands and three wetlands with fish were studied, which are located in the surroundings of the Nahu...
Article
Full-text available
In this study, the distribution and occurrence of backswimmers in 21 fishless ponds was analysed in the Nahuel Huapi National Park (Patagonia, Argentina). We performed laboratory experiments to study the impact of different developmental stages of the endemic backswimmer Notonecta vereertbruggheni on typical co-occurring prey. We recorded three spe...
Article
Full-text available
Question: Does pond permanency affect life-history traits of endemic anurans from Patagonia? Background: Amphibians inhabiting North Patagonia breed at ponds that differ strongly in their water permanency. The role of phenotypic plasticity in adapting to variable environments could be fundamental in these Patagonian anurans. Prediction: In comparis...
Article
Full-text available
Many species alter their activity, microhabitat use, morphology and life history in response to predators. Predation risk is related to predator size and palatability of prey among others factors. We analyzed the predation risk of three species of tadpoles that occur in norwestern Patagonia, Argentina: Pleurodema thaul, Pleurodema bufoninum and Rhi...
Article
Full-text available
anurans living along the andes cordillera exploit several thermal environments that vary with altitude and latitude. studies on moderate and high-elevation tropical species suggest co-adaptation between thermal ecology and thermal physiology. our objective was to test whether this is the case for three patagonian anuran species. We focused on larva...
Article
Full-text available
Rhinella spinulosa is a toad common in rivers, streams, and steppe wetlands where they face a variety of insect predators. Rhinella spinulosa tadpoles are known to be unpalatable to dragonfly naiads at some developmental stages. In this paper, we studied susceptibility of R. spinulosa tadpoles to predation by two species of predators, water bugs (B...
Article
Full-text available
Several studies have shown that prey and predator body size may affect the outcome of predator–prey interactions. However, few studies have taken in account the changes on predator–prey interactions over 24h. In a tropical freshwater system I evaluated how predator and prey size, and their diel rhythm in activity influenced the interaction between...
Article
Full-text available
The effect of predatory water spiders on the tadpole size-structure is poorly understood. Here I present a study of the effect of the spider Thaumasia sp. on the survivorship of Physalaemus pustulosus tadpoles in a tropical system. Under experimental conditions, tadpoles of one or two sizes were offered to juvenile spiders. Two experiments were con...
Article
Full-text available
Se evaluó la variación ontogenética de la palatabilidad en Bufo spinulosus papillosus expuestos a larvas del odonato Rhionaeshna variegata (Odonata, Aeshnidae). Los renacuajos fueron agrupados en cuatro categorías de desarrollo y fueron expuestos a la depredación directa determinándose el número de renacuajos consumidos al finalizar los experimento...
Article
Full-text available
Almost 5 % of the lansdscape of Patagonia is occupied by wetlands. In the extra-andean region and the patagonian desert, wetlands are essential for sustaining biodiversity and wildlife. Besides, North patagonian wetlands present complex aquatic communities and provide habitat for threatened species of fishes and amphibians. These ecosystems have co...
Article
Full-text available
Almost 5 % of the lansdscape of Patagonia is occupied by wetlands. In the extra-andean region and the patagonian desert, wetlands are essential for sustaining biodiversity and wildlife. Besides, North patagonian wetlands present complex aquatic communities and provide habitat for threatened species of fishes and amphibians. These ecosystems have co...

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Projects

Projects (2)
Project
This project constitutes a new approach to biotic interaction, mainly because traditional ecology has tended to focus mainly on predation, competition and parasitism, even in the context of climate change. Positive interactions such as facilitation between species have been little studied, and even less in relation to climate change. This kind of interaction becomes important when it forms part of fundamental ecosystem processes, like the cycling of organic matter. The degradation of organic matter by macroinvertebrate detritivores has been widely studied in streams and rivers, but up to now this process has been little analysed in wetlands, and the role of amphibian larvae in the cycling of organic matter has been explored even less. Although ecologists have traditionally labelled tadpoles as predominantly herbivorous larval stages that constitute food for many other aquatic organisms, this view is changing. Recent studies have shown that amphibian larvae can consume much more than periphyton and phytoplankton: they also feed on organic detritus and even microorganisms such as fungi and bacteria. In addition, they take part in the recycling of organic matter in many aquatic systems, including wetlands. This project will therefore contribute new information to the theory of biotic interaction, and increase knowledge of the facilitation processes that occur between macroinvertebrates and amphibian larvae involved in organic matter cycling. Exploration of these interactions in the context of climate change is essential, since macroinvertebrates and amphibian larvae are ectotherms, which appear to be the most vulnerable organisms in this scenario. If this is so, then the phenomenon will have a direct and indirect impact on the cycling of organic matter in wetlands, altering the dynamics of these ecosystems which are already deteriorating on a global level.
Project
Aquatic insects and larval amphibians are key components of communities associated with seasonal ponds and wetlands. In Patagonia Argentina several species of aquatic insects and anuran amphibians are endemic of the region and they represent the principal biomass of organism in these systems. They can be stablished different relationship betweem them such as competition and predation. Because they are ectothermic organisms, breeding phenology, hatching time and larval development are sensitive to climate conditions. Therefore is very important to know how they could respond to potential scenarios of global-warming.