Occurrence and feeding interactions data on 16 piscivororus fish species of the middle Paraná River

Name: Occurrence and feeding interactions data on 16 piscivororus fish species of the middle Paraná River
License: https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Keywords: freshwater fish

Datos de investigación

Occurrence and feeding interactions data on 16 piscivororus fish species of the middle Paraná River

Autores: Scarabotti, Pablo Augusto Icon

; Borzone Mas, Dalmiro Icon

; Alvarenga Mariani, Patricio Francisco Icon

Publicador: Consejo Nacional de Investigaciones Científicas y Técnicas

Fecha de depósito: 17/12/2025

Fecha de creación: 17/11/2013-22/12/2017

Clasificación temática:

Ecología

Resumen

This database was used in the article "On traits matching and the modular organization of food webs and occurrence networks" authored by Dalmiro Borzone Mas et al. and published in The Journal of Animal Ecology. The database include occurrence data and trophic interations form 16 piscivorous fish species of the middle Paraná River, near Santa Fe.

Métodos

Fish were sampled across 28 water bodies encompassing four main habitat types—main rivers (MR), secondary channels (SC), connected lakes (CL), and isolated lakes (IL)—which differ in flow, size, and hydrological connectivity. Main rivers (MR) were wide lotic environments (330–1,100 m), secondary channels (SC) were narrower (28–137 m) and meandered through floodplain islands, connected lakes (CL) were lentic systems permanently linked to channels (3.4–240 ha; 0.7–3.1 m depth), and isolated lakes (IL) were temporarily disconnected from channels (4.1–40.1 ha). Sampling was conducted between 2013 and 2017, covering different hydroclimatic conditions defined by the combination of hydrometric level (high vs. low water) and thermal season (warm vs. cold). Fish were collected using standardized gillnets and beach seine nets (see Borzone Mas et al, 2022 for details). Each individual was identified, measured, and weighed. Twelve ecomorphological measurements were taken on one adult individual of each piscivorous species. (Supplementary table 1 of the article). Morphological traits were rather stable within each species and intraspecific variation was very low in comparison with differences between species (personal observation). These variables were selected following the methodology of Winemiller (1991), Villéger et al. (2011), and Claverie & Wainwright (2014), and were related to mobility, speed, acceleration, and predatory behavior. Fish stomachs were preserved in 10% formalin and examined in the laboratory under a binocular microscope. Fish prey were identified at the species level, while invertebrates were identified at the order level. Preys were classified into the following groups: Characiformes, Siluriformes, Gymnotiformes, Perciformes, other fish orders, invertebrates, fish remains, and plant remains. As large numbers of juveniles of Salminus brasiliensis were collected in the area and this species exhibit strong ontogenetic differences in habitat use and feeding (Rossi et al., 2007), we divided individuals of this species into juvenile (< 1000 g) and adult (> 1000 g) for both food webs and spatial networks. Metadata Ocurrence data are in five columns: 1) Row number 2) Sample name coded by survey (M1 2013, M2, 2014, M3, 2015, M4 2016, T1-T14; 2016 and 2017) and sample site C01-C16 and P01-P21) 3) sp. Species name abbreviated 4) ls: strandard length in cm and 5)env.: Type of environment. MR: Main rivers, SC: Secondary channels, CL, connected lake and IL: Isolated lake. Feeding interaction data are in ten columns Ocurrence data are in five columns: 1) Row number 2) situ.: hydroclimatic situation: aac: high waters, warm season; abf: low waters, cold season; aac: high waters, warm season; abc low waters, warm season. 3) sp. Scientific species name abbreviated 4) ls: fish strandar length in cm and 5) fish weight in g 6) Prey type or species name 7)lsprey: total maximum length of the prey, 8) wtprey: total weight of prey 9) grupo: Taxonomic group of prey 10) trophic level of prey obtained from literature References References are detailed in the section References of the published article in the Journal of Animal Ecology

Palabras clave: freshwater fish, Paraná River, network ecology, food webs

Alcance geográfico

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Identificador del recurso

URI: http://hdl.handle.net/11336/278009

Colecciones

Datos de Investigación(INALI)
Datos de Investigación de INST.NAC.DE LIMNOLOGIA (I)

Citación

Scarabotti, Pablo Augusto; Borzone Mas, Dalmiro; Alvarenga Mariani, Patricio Francisco; (2025): Occurrence and feeding interactions data on 16 piscivororus fish species of the middle Paraná River. Consejo Nacional de Investigaciones Científicas y Técnicas. (dataset). http://hdl.handle.net/11336/278009

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)