Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)

Martínez, Juan Diego Sánchez; Cadena, Carlos Daniel; Torres, Mauricio

doi:10.1590/1982-0224-20150171

Cited by 14 publications

(10 citation statements)

References 48 publications

(50 reference statements)

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“…Despite the lack of information from tropical environments and their biota, contrasting responses to global change results can be expected from tropical fishes. For example, although the thermal tolerances for most neotropical fish species are still unknown (Martínez, Cadena, & Torres, 2016), ecthothermal tropical species tend to display distributions close to their thermal tolerances (Sunday et al., 2019). This is supported by the narrower thermal tolerances found in tropical montane aquatic species when contrasted to their temperate counterparts (Polato et al., 2018).…”

Section: Discussionmentioning

confidence: 99%

The combined effects of climate change and river fragmentation on the distribution of Andean Amazon fishes

Herrera‐R

Oberdorff

Anderson

et al. 2020

Global Change Biology

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Upstream range shifts of freshwater fishes have been documented in recent years due to ongoing climate change. River fragmentation by dams, presenting physical barriers, can limit the climatically induced spatial redistribution of fishes. Andean freshwater ecosystems in the Neotropical region are expected to be highly affected by these future disturbances. However, proper evaluations are still missing. Combining species distribution models and functional traits of Andean Amazon fishes, coupled with dam locations and climatic projections (2070s), we (a) evaluated the potential impacts of future climate on species ranges, (b) investigated the combined impact of river fragmentation and climate change and (c) tested the relationships between these impacts and species functional traits. Results show that climate change will induce range contraction for most of the Andean Amazon fish species, particularly those inhabiting highlands. Dams are not predicted to greatly limit future range shifts for most species (i.e., the Barrier effect). However, some of these barriers should prevent upstream shifts for a considerable number of species, reducing future potential diversity in some basins. River fragmentation is predicted to act jointly with climate change in promoting a considerable decrease in the probability of species to persist in the long‐term because of splitting species ranges in smaller fragments (i.e., the Isolation effect). Benthic and fast‐flowing water adapted species with hydrodynamic bodies are significantly associated with severe range contractions from climate change.

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Section: Discussionmentioning

confidence: 99%

The combined effects of climate change and river fragmentation on the distribution of Andean Amazon fishes

Herrera‐R

Oberdorff

Anderson

et al. 2020

Global Change Biology

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“…Members of the order Cyprinodontiformes are in general highly tolerant to high temperatures (e.g., [30, 45]), different concentrations of salinity (e.g., [31]), and a wide range of physicochemical environmental conditions (e.g., [29]), including environments with high concentrations of sulfide (e.g., [15]). In the genus Jenynsia , only a few studies were conducted to evaluate the tolerance of these fish to different environmental conditions, and almost all focused on J .…”

Section: Discussionmentioning

confidence: 99%

Molecular and morphological convergence to sulfide-tolerant fishes in a new species of Jenynsia (Cyprinodontiformes: Anablepidae), the first extremophile member of the family

et al. 2019

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Freshwater sulfide springs have extreme environmental conditions that only few vertebrate species can tolerate. These species often develop a series of morphological and molecular adaptations to cope with the challenges of life under the toxic and hypoxic conditions of sulfide springs. In this paper, we described a new fish species of the genus Jenynsia , Anablepidae, from a sulfide spring in Northwestern Argentina, the first in the family known from such extreme environment. Jenynsia sulfurica n. sp. is diagnosable by the lack of scales on the pre-pelvic area or the presence of a single row of scales, continuous or not, from the isthmus to the bases of the pelvic fins. Additionally, it presents a series of morphological and molecular characteristics that appear convergent with those seen in other fish species (e.g., Poeciliids) inhabiting sulfide springs. Most notably, J . sulfurica has an enlarged head and postorbital area compared to other fish of the genus and a prognathous lower jaw with a hypertrophied lip, thought to facilitate respiration at the air-water interface. Analyses of cox1 sequence showed that J . sulfurica has two unique mutations resulting in amino acid substitutions convergent to those seen in Poeciliids from sulfide springs and known to provide a physiological mechanism related to living in sulfide environments. A phylogenetic analysis, including molecular and morphological characters, placed J . sulfurica as sister taxa to J . alternimaculata , a species found in nearby, non-sulfide habitats directly connected to the sulfide springs. Thus, it can be inferred that the selection imposed by the presence of H 2 S has resulted in the divergence between these two species and has potentially served as a barrier to gene flow.

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“…A pesar de que la temperatura es considerada como el factor abiótico con mayor relevancia en la biología íctica, los rangos de tolerancia en peces de agua dulce usualmente no se conocen (Martínez, et al, 2016). Aunque suele preferir temperaturas altas, P. caucana presenta una notable capacidad de aclimatación (Martínez, et al, 2016) y los valores medidos se encuentran en el intervalo reportado por Gómez, et al (1999), entre 23,6 y 29,2 °C. Además, esta especie se caracteriza por presentar una amplia distribución en fuentes hídricas de baja turbulencia y alto contenido de material vegetal en Colombia (Ortega-Lara, et al, 2002).…”

Section: Sitiounclassified

Caracterización físicoquímica e hidrobiológica de tres ecosistemas kársticos de la cuenca del río Magdalena (Antioquia, Colombia) durante el ciclo hidrológico 2016-2017

Jiménez-González

Murillo-García

Ríos-Pulgarín

2021

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Los estudios sobre la fauna acuática de ecosistemas kársticos tropicales son escasos, lo que dificulta entender su dinámica, así como reglamentar su conservación. En este contexto, entre octubre de 2016 y abril de 2017 se desarrolló un estudio para caracterizar las comunidades de peces y macroinvertebrados acuáticos que habitan las corrientes asociadas con ecosistemas kársticos de los municipios de San Luis y Sonsón (Antioquia, Colombia) y su relación con las condiciones ambientales internas y externas mediante métodos estandarizados de recolección y tratamiento de datos biológicos y fisicoquímicos. Además, se determinó la composición y la abundancia de especies de peces y macroinvertebrados, así como los índices ecológicos de diversidad y dominancia, y los de bioindicadores de la calidad de agua (BMWP/Col) con base en macroinvertebrados bentónicos. La variabilidad espacial y temporal, así como la relación entre los parámetros ambientales y biológicos, se estableció mediante análisis de varianza y discriminantes canónicos. Los resultados evidenciaron que los macroinvertebrados más abundantes fueron los efemerópteros de las familias Leptoplebiidae y Baetidae (Thraulodes sp y Camelobaetidius), los coleópteros de la familia Elmidae (Microcylloepus) y los tricópteros de las familias Hydropsychidae (Leptonema) y Philopotamidae (Chimarra). Entre los peces la especie más representativa fue Poecilia caucana. A pesar de que ninguno de estos organismos evidenció una dependencia particular con las variables físicas y químicas del agua, sí mostraron preferencia por el exterior de las cavernas, aunque con movilidad entre los compartimentos del sistema en función del tipo de cobertura vegetal y la oferta de recursos de cada caverna, lo que sugiere una dependencia entre el estado de conservación del bosque, los vertebrados y la vida acuática de las cavernas.

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Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)

Cited by 14 publications

References 48 publications

The combined effects of climate change and river fragmentation on the distribution of Andean Amazon fishes

The combined effects of climate change and river fragmentation on the distribution of Andean Amazon fishes

Molecular and morphological convergence to sulfide-tolerant fishes in a new species of Jenynsia (Cyprinodontiformes: Anablepidae), the first extremophile member of the family

Caracterización físicoquímica e hidrobiológica de tres ecosistemas kársticos de la cuenca del río Magdalena (Antioquia, Colombia) durante el ciclo hidrológico 2016-2017

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