Image of Cnesterodon decemmaculatus. Cnesterodon decemmaculatus Trusted of Cnesterodon decemmaculatus; Map of Cnesterodon decemmaculatus. Subfamily, Poeciliinae Garman, – livebearers. Genus, Cnesterodon Garman, Species, Cnesterodon decemmaculatus (Jenyns, ). Diet of Cnesterodon decemmaculatus (Jenyns, ) and Jenynsia multidentata (Jenyns, ) were analysed in Lake Rodó, an urban hypertrophic lake from.

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In this case, wetland habitats close to the watersheds between different drainages may facilitate headwater capture events, as minor environmental changes may reshape the hydrological network at these sites, impeding a clear-cut relationship between genetic lineages and drainages. Despite the high level of endemism, and its significant environmental heterogeneity, Pampean species are underrepresented in phylogeographic studies, especially aquatic organisms.

These geomorphological processes promoted successive stream captures events, allowing obligate freshwater species to disperse using temporary connections e.

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The fish community of this lake is characterised by the dominance of C. Lake restoration by biomanipulation: Rotifera was an important item consumed during summer and winter samplings by all size classes.

Fish were captured from a boat by electrofishing in the whole lake, and preserved on ice while were carried to the laboratory. Decemmaxulatus structuring role of free-floating versus submerged plants in a subtropical shallow lake.

Cnesterodon decemmaculatus

Arlequin suite ver 3. This index also ranges cndsterodon 0 to 1, and when the value exceeds 0. When all items are present, fish consume them simultaneously.


Second, decwmmaculatus used a coalescent-based species-tree analysis Heled and Drummond, to infer the colonization history of each river basin using the StarBeast model in the program BEAST 1.

Indeed, Loureiro et al.

Cnesterodon decemmaculatus – Wikispecies

According to the alimentary importance index AIIdetritus, phytoplankton, zooplankton cladocerans, copepods, rotifers and periphyton were the most important items in the diet Fig. Periphyton, detritus and phytoplankton are available the whole year, while zooplankton specially Cladocera shows high seasonal variability SCASSO et al. The highest value was observed for class I of both species Tab. The lake area is 1.

IIshowing significant differences between all classes class I and class II: This hypothesis would be strengthened cnesteeodon we assume that H10 evolved decemmacklatus situ in NEG before dispersing eastward. Water quality effects on fish communities of the central part of Argentina. With respect to J. Sea-level changes, river capture and the evolution of populations of the Eastern Cape and fiery redfins Pseudobarbus afer and Pseudobarbus phlegethonCyprinidae across multiple river systems in South Africa.

We performed neutrality tests under two schemes: A rapid isolation procedure for small quantities of fresh leaf tissue. Bayesian evolutionary analysis by sampling trees. Phylogeography of Cnesterodon decemmaculatus Cyprinodontiformes: Cnesterodon decemmaculatus Jenyns is endemic to the Pampa biome and is one of the most widespread freshwater fish species in this region.

We characterized mitochondrial and autosomal genetic lineages in populations sampled from Southern Brazil and Uruguay to investigate 1 the correspondence between current drainage systems and evolutionary lineages, 2 the demographic history for each genetic lineage, and 3 the temporal depth of these lineages.


Nine and 24 food items were observed in the gut contents of C. The high correlation between Cladocera and ephippials in the gut contents of C.

Cnesterodon — Wikipédia

We tested two mitochondrial mtDNA genes: Global diversity of fish Pisces in freshwater. Ecosystem alteration by mosquitofish Gambusia affinis predation.

In this study, we used mitochondrial and nuclear genetic markers to evaluate the genetic structure of C. Molecular zoogeography of freshwater fishes in the southeastern United States.

Ramos-Fregonezi1, 2 Luiz R. We performed a maximum-likelihood search based on three replicates of 10 initial chains and two final chains. This could be explained because zooplankton items, mainly Cladocera and Copepoda, would satisfy their energetic requirements in a more efficient way. Facultative planktivores are opportunistic feeders, switching to food sources other than plankton like suspended organic particles, periphyton, macrophytes, insects or benthic animals and plants, when zooplankton is less available LAZZARO, The comparison of means of the repletion degree between the morning 1.

Neutrality tests provided mixed evidence for population growth in some populations. Brazilian freshwater fish assemblages from southern Pampean area, Argentina. A new species of Austrolebias costa cyprinodontiformes: Pisces was consumed also only by class 3 and only during summer and winter samplings. Algae were an item only important on autumn and winter samples and principally for higher classes.