The water flea Daphnia pulex (Cladocera, Daphniidae), a possible model organism to evaluate aspects of freshwater ecosystems

  title={The water flea Daphnia pulex (Cladocera, Daphniidae), a possible model organism to evaluate aspects of freshwater ecosystems},
  author={Juan-Alejandro Norambuena and Jorge G. Far{\'i}as and Patricio De los R{\'i}os},
Daphnia pulex is a freshwater planktonic crustacean, allegedly a cosmopolitan species, which is found in lentic ecosystems. The aim of this study was to conduct a literature review of D. pulex related to its life history and genetic variability, in order to mark a route for future studies. We noted that D. pulex is a model species on which ecological studies have been carried out, as well as molecular studies, in which its molecular diversity has been characterized and such in specimens from… 

Nauplius-The Journal of The Brazilian Crustacean Society

The results report previously unknown information about M. jelskii for a semiarid region of northeastern Brazil, and female fecundity showed a positive correlation with growth.

Evidence of the Anthropic Impact on a Crustacean Zooplankton Community in Two North Patagonian Lakes

Lately, agriculture, livestock, forestry, and aquaculture activities have been greatly developed in Chilean North Patagonia, negatively impacting the balance of the environmental conditions in lakes

First reports of short-term temporal variations in crustacean species richness in north Patagonian coastal temporary pools

A short-term ecological comparison in a group of shallow temporary pools in northern Chilean Patagonia in two periods revealed marked differences in terms of species richness in the study pools at different conductivities and chlorophyll a concentrations.



Phylogenetics and evolution of a circumarctic species complex (Cladocera: Daphnia pulex)

This study examines the phylogenetic relationships among circumarctic members of the Daphnia pulex complex, through the analysis of sequence diversity in 498 nt of the ND5 mitochondrial gene, and suggests that the complex is composed of three major clades, two of which are subdivided into at least eight different lineages.

Genetic Diversity of Daphnia pulex in the Middle and Lower Reaches of the Yangtze River

The genetic diversity and phylogeny of D. pulex evolved into two branches in the phylogenetic trees, which coincided with its geographical distribution, and the A+T content was significantly higher than the G+C content among invertebrates, consistent with higher A and T contents among inverTEbrates.

Morphological variation of Daphnia pulex Leydig (Crustacea: Cladocera) and related species from North America

  • S. Dodson
  • Environmental Science
  • 2004
The data support either the view that the D. pulex species group is one widespread and variable species, or that it is comprised of a much larger number of species than presently recognized.


Investigating the genotypic characteristics of 10 D. pulex populations from each of 22 sites in the Great Lakes watershed revealed that populations reproducing by cyclic parthenogenesis were uncommon and restricted to southern sites.

New insights into the distribution of polyploid Daphnia: the Holarctic revisited and Argentina explored

The present study is the first to document the presence of polyploid members of the D. pulex complex in any temperate climate and provides important insights into the diverse factors that determine the distributions and evolutionary fates ofpolyploid organisms.

Ecological genetics of Norwegian Daphnia. III. Clonal richness in an Arctic apomictic complex

The data suggest that the sampling effort has uncovered only a small subset of a much larger array of clones on this remote arctic archipelago, and indicates that the genetic structure of this apomictic complex is one of the most fragmented among asexual organisms.

Phylogeography of Daphnia magna in Europe

The phylogeographical structure of the water flea Daphnia magna in Europe was analysed using a 609-bp fragment of the cytochrome oxidase subunit I gene, suggesting a high degree of provincialism with a patchy occurrence of specific lineages, thus confirming the highly subdivided genetic structure usually observed in freshwater zooplankton populations.

The Ecoresponsive Genome of Daphnia pulex

The Daphnia genome reveals a multitude of genes and shows adaptation through gene family expansions, and the coexpansion of gene families interacting within metabolic pathways suggests that the maintenance of duplicated genes is not random.

Genetic polymorphism, haplotype distribution, and phylogeny of Daphnia (Cladocera: Anomopoda) species from the water bodies of russia as inferred from the 16S mtDNA gene sequencing

A conclusion was made that the 16S mtDNA gene could be successfully used in phylogeographic analysis of the genus Daphnia and a new habitat on the territory of Russia, namely, the water bodies of the Lake Baikal basin was identified.

Genetic perspectives on invasions: the case of the Cladocera

The results of this analysis establish that the current pace of species invasions is extraordinary; present rates are nearly 50 000 times higher than historical levels.