Tomás Maiztegui

Tomás Maiztegui
Instituto de Limnología "Dr. Raúl A. Ringuelet" | ILPLA · Fish Ecology

PhD in Biologic Sciences

About

31
Publications
10,551
Reads
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365
Citations
Citations since 2016
23 Research Items
349 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Additional affiliations
April 2016 - April 2018
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Position
  • Fellowship holder
October 2012 - present
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Position
  • Felloship holder
September 2012 - October 2016
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Position
  • Fellowship holder

Publications

Publications (31)
Article
Full-text available
Few studies have addressed the composition of fish assemblages of the freshwater Río de la Plata (RdlP) and have only been limited to species lists gathered over the last two centuries. As such inventories have never been reviewed or validated by fish sampling, the richness and structure of RdlP fish assemblage are poorly known. Hence, we conducted...
Chapter
The Patagonian steppe is a vast territory with a diverse array of aquatic environments with low fish richness, including several exotic species which are mostly salmonids. Unlike the Andean region, knowledge of the ichthyofauna and fisheries of the Patagonian plateau is comparatively scarce. The characteristics of the ichthyofauna and their assembl...
Article
Full-text available
Headwater streams play an essential role in catchment ecosystem processes and are particularly vulnerable to land use degradation and anthropic hydrological alterations. Considering that fish assemblages are reliable indicators of the ecological integrity of streams, we evaluated the ichthyofauna structure in four headwater Pampean streams located...
Article
Full-text available
The Matanza Riachuelo Basin is one of the most polluted watersheds in the world. We assessed the relationships between land use, stream-water quality, and the structure of the fish assemblages on a subbasin scale from data obtained in 44 sampling sites. A gradient of change from the rural upper sector to the urbanized and industrialized lower basin...
Article
Riparian areas of riverine plains develop extensive floodable areas named riverine wetlands, which are essential to the water cycle balance and ecosystem dynamics. In this study, we contrasted the hydrological and physicochemical variables of riverine wetlands of both peri-urban areas impacted by intensive farming and those of rural areas with the...
Article
In recent years, the evolutionary history of the catfish genus Hypostomus has attracted much interest (Cardoso et al. 2021; Jardim de Queiroz et al. 2020; Silva et al. 2016). However, the identification of species of this genus is challenging, given the complex taxonomy of the group and the scarce morphological information available for many taxa....
Article
Full-text available
Las actividades humanas en los sistemas naturales promueven cambios que ponen en peligro a las comunidades acuáticas por pérdida de nichos ecológicos generando disminución de la riqueza y diversidad. El objetivo de esta investigación fue analizar los ensambles de aves y peces asociados a cuatro bañados de arroyos pampeanos con usos del suelo periur...
Article
Full-text available
The present study reported the effect of natural and anthropic environmental variables on the fish assemblages in the pampean streams, in the coastal strip along the Río de la Plata, Buenos Aires province, Argentina. Five streams were sampled at 12 sites surrounded by land devoted to different uses. A correspondence analysis sorted the streams into...
Conference Paper
Full-text available
El Río de la Plata (RdlP) se caracteriza por su elevada inestabilidad ambiental, fuertemente influenciada por los vientos y las mareas. Esta situación ha condicionado históricamente desde lo logístico y económico a los estudios ictiológicos en este ambiente tan extenso. Con el objetivo de encontrar una alternativa para superar estas limitaciones y...
Article
In South America, the order Atheriniformes includes the monophyletic genus Odontesthes with 20 species that inhabit freshwater, estuarine and coastal environments. Pejerrey Odontesthes argentinensis is widely distributed in coastal and estuarine areas of the Atlantic Ocean and is known to foray into estuaries of river systems, particularly in condi...
Article
Full-text available
Common carp ( Cyprinuscarpio ) is a global invader that exhibits a wide distribution in Argentina, particularly in shallow lakes and wetlands of the Pampean region. The hydrological conditions of these environments are driven by variations in annual precipitation that determine inter annual changes in water levels leading to flood-drought cycles. T...
Conference Paper
Full-text available
Exploracuátic@s es un proyecto de extensión que nació en el año 2015 y que se ha instalado como un espacio educativo y recreativo donde niños y adolescentes de El Retiro y Ringuelet (La Plata) interactúan con un paisaje tan cotidiano para ellos como lo es el arroyo “El Gato”. Desde un enfoque interactivo y lúdico los integrantes del proyecto buscan...
Article
The presence of microplastics (MPs) in gut contents of coastal freshwater fish of the Rio de la Plata estuary was studied. Samples were taken in six sites where 87 fish belonging to 11 species and four feeding habits were captured. Presence of MPs was verified in the 100% of fish. The fibres represented the 96% of MPs found. The number of MPs in gu...
Article
Ecological aquaculture systems consider the natural and social environments in which they are situated in the search to contribute to environmental sustainability. In South America, the aquaculture of the native zooplanktivorous fish Odontesthes bonariensis (“pejerrey”) has some constraints that could be overcome by applying extensive culture syste...
Chapter
Full-text available
Hydrological ecosystem services involve the regulation of water flows, the reduction of the flooding impact, the soil erosion and the sediment accumulation in the watercourses, also including the maintenance and improvement of the water quality, the aquiferous recharge and the aquatic habitats. The impermeability of the soil due to urbanization, th...
Article
Full-text available
This study documents the presence of Cyprinus carpio in 119 natural environments and 49 artificial habitats in Argentina, showing an exponential increment of invaded locations over time since it was introduced in the nineteenth century. Geographic expansion patterns revealed that since its initial introduction, species records demonstrate an increm...
Article
Full-text available
The lengthí weight relationships (LWR) of 29 teleost fish species from the shallow estuarine environments of the Samborombón Bay wetland (Rí­­o de la Plata, Argentina) were estimated. A total of 6,376 individuals belonging to 19 families were measured and weighed. The best represented family was Sciaenidae with 6 species, followed by Clupeidae (n =...
Thesis
Full-text available
The main objective of this study was to know about the biology and the population ecology of the common carp (Cyprinus carpio) in Ajó Wetlands, to provide useful information for developing management strategies for this exotic species within this protected area. The field work covered a two years period, from April 2009 to March 2011, with 24 month...
Article
Full-text available
The length–weight relationships (LWR) of 29 teleost fish species from the shallow estuarine environments of the Samborombón Bay wetland (Río de la Plata, Argentina) were estimated. A total of 6,376 individuals belonging to 19 families were measured and weighed. The best represented family was Sciaenidae with 6 species, followed by Clupeidae (n = 3)...
Chapter
Full-text available
The La Plata River system can be defined as a funnel coastal plain tidal river with a semi-closed shelf at the mouth. La Plata River is both the world’s widest freshwater system and an estuary that drains the second largest basin in South America and the fifth largest in the world. The Rio de la Plata system is shared by Argentina and Uruguay and h...
Conference Paper
Full-text available
La Cuenca Matanza-Riachuelo se localiza al noreste de la provincia de Buenos Aires. El uso del suelo en la cuenca alta y media es predominantemente agrícola-ganadero con escasa urbanización, mientras que en la baja se encuentra la mayor urbanización e industrialización del país. El objetivo de este trabajo es describir y analizar la estructura de l...
Article
Full-text available
El pejerrey es la especie de mayor importancia deportiva en lagos someros templados y embalses de Argentina y el desarrollo de su acuicultura data de cien años atrás. Un impedimento común para el desarrollo de la acuicultura del pejerrey es el pobre crecimiento que manifiesta bajo cultivo intensivo. El objetivo de este estudio fue evaluar la posibi...
Article
Full-text available
Pampean lakes are characterised by the alteration of flood and drought periods which, in turn, influence the biotic communities; however, little is known about its effects on fish assemblage in an extended temporal scale. The aim of this work was to analyse the temporal variability of the fish assemblage in Chascomús Lake, the most studied shallow...
Article
An experiment was conducted for 80 days at La Salada de Monasterio Lake (Buenos Aires, Argentina) to assess the effect of stocking density and natural food availability on the growth and production of zooplanktivorous juveniles of pejerrey (Odontesthes bonariensis) in extensive cage culture. Ten cages were installed and stocked with 33-day-old fish...
Article
Full-text available
This study assesses for the first time the relationship between annual cycles of different biological indices with growth patterns of a marine pejerrey Odontesthes argentinensis population near its southern-distribution boundary in North Patagonia. The reproductive period is between September and November evidenced by an increase in the gonado-soma...
Article
Full-text available
The use of Cheirodon interruptus as a sport fishing bait puts under serious pressure the pampean shallow lakes ecosystems, because it is mostly obtained from natural environments. This project aims to evaluate the possibility of developing the technological and biological know-how for a production system in captivity for sustainable use of the reso...

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Projects

Projects (4)
Archived project
Project
Estudiar la dinámica del fluido acuático en los bañados de desborde. Comprender la estructura y la dinámica de las comunidades acuáticas en estos ambientes sin perturbación. Interpretar los cambios ocurridos en la dinámica del fluido y en las comunidades acuáticas en distintas situaciones de perturbación.
Project
The goal of this project is to determine the structure of fish assemblages at the mouths of different Pampean streams to Rio de la Plata (RLP), analyzing how the seasonality and the use of the territory on its basins affect their annual dynamics and functioning.