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.

Author: Dajar Dicage
Country: Italy
Language: English (Spanish)
Genre: Business
Published (Last): 2 March 2007
Pages: 190
PDF File Size: 13.8 Mb
ePub File Size: 20.75 Mb
ISBN: 857-4-64135-381-6
Downloads: 46195
Price: Free* [*Free Regsitration Required]
Uploader: Gardagar

Torres, Universidade Federal de Pernambuco, Brazil. To determine the correspondence between current drainage systems and evolutionary lineages, we inferred the evolutionary relationship among haplotypes using a median-joining network Bandelt et al.

Impact of mosquitofish Gambusia affinis predation on plankton communities. There was a marked difference decemmachlatus the number of different genetic population occurring in each major drainage.

Cnesterodon – Wikipedia

Freshwater ecoregions of the world: However, the presence of H14 in URU and H10 in NEG indicates that these events could also occur in the opposite direction, suggesting a highly dynamic scenario in the Pampas, possibly because this biome is largely flat. 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, Estimates for the effective population size N E and growth parameter G in all populations.


There were undertook six seasonal fish sampling between August and November With respect to J.

Testing the effect of palaeodrainages versus habitat stability on genetic divergence in riverine systems: The impact of planktivorous fish on the structure of a plankton community.

Fish feeding, facultative planktivores, eutrophication. The feeding overlap between both species, considering all size classes was 0. The mtDNA genealogy for C. A comparison of genetic diversity levels cnesrerodon marine, freshwater, and anadromous fishes.

Cnesterodpn The Pampas is a Neotropical biome formed primarily by low altitude grasslands and encompasses the southernmost portion of Brazil, Uruguay, and part of Argentina. Results Ninety-nine sequences were decemmaxulatus for the mtDNA ND2 gene bp yielding 31 different haplotypes defined by 42 variable sites 28 parsimoniously informative.

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 deecemmaculatus relationship between genetic lineages and drainages. The comparison of means of the repletion degree between the morning 1.

Biological identifications through DNA barcodes. When each size class is considered separately, the detritus AII mean value increased with fish size Tab. Received Aug 31; Accepted Dec 4. Complex interactions in lake communities. Diversification in the South American Pampas: Please review our privacy policy.


This could be explained because zooplankton items, mainly Cladocera and Decemmmaculatus, would satisfy their energetic requirements in a more efficient way. However, their consumption should be important when they are abundant in the lake. This evolutionary scenario may represent useful starting models for other freshwater species having a similar distribution.

Cnesterodon decemmaculatus – Wikispecies

University of California Press; Feeding Ecology of Fish. We ran PHASE several times using different starting seeds to ensure the reliability of the final estimate. This work focussed on the diet of C.

Services on Demand Journal. The food and feeding habits of young perch, Perca fluviatilisin Windermere.

Human uses

In this study, we used mitochondrial and nuclear genetic markers to evaluate the genetic structure of C. Table 3 Estimates for the effective population size N E and cnesterodoj parameter G in all populations. Ecological consequences of food partitioning for the fish population structure in a eutrophic lake.

Systematic decemmaculatuw of the genus Cnesterodon Cyprinodontiformes: Periphyton, detritus and phytoplankton are available the whole year, while zooplankton specially Cladocera shows high seasonal variability SCASSO et al.