scholarly journals Metabolomics reveals an involvement of pantothenate for male production responding to the short-day stimulus in the water flea, Daphnia pulex

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Kenji Toyota ◽  
Alex Gavin ◽  
Shinichi Miyagawa ◽  
Mark R. Viant ◽  
Taisen Iguchi
Keyword(s):  
Daphnia Pulex ◽  
Male Production ◽  
Water Flea ◽  
Short Day

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

Crustaceana ◽  
2019 ◽  
Vol 92 (11-12) ◽  
pp. 1415-1426
Author(s):  
Juan-Alejandro Norambuena ◽  
Jorge Farías ◽  
Patricio De los Ríos
Keyword(s):  
Phylogenetic Trees ◽  
Daphnia Pulex ◽  
Model Organism ◽  
Freshwater Ecosystems ◽  
Intraspecific Diversity ◽  
Molecular Tools ◽  
Water Flea ◽  
Future Studies ◽  
Molecular Studies

Abstract 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 different environments: both pristine and under human influence. In particular those studies are highlighted, in which molecular tools have been used to construct phylogenetic trees for study intraspecific differences. Also, in some of these molecular studies, analyses of genetic, inter- and intraspecific diversity have been performed. In addition, analyses of protein expression in D. pulex and related species seem promising in evaluating the detailed role of this species.

scholarly journals Development of a microinjection system for RNA interference in the water flea Daphnia pulex

2013 ◽  
Vol 13 (1) ◽  
pp. 96 ◽  
Author(s):  
Chizue Hiruta ◽  
Kenji Toyota ◽  
Hitoshi Miyakawa ◽  
Yukiko Ogino ◽  
Shinichi Miyagawa ◽  
...  
Keyword(s):  
Rna Interference ◽  
Daphnia Pulex ◽  
Water Flea

scholarly journals Gene up-regulation in response to predator kairomones in the water flea, Daphnia pulex

2010 ◽  
Vol 10 (1) ◽  
pp. 45 ◽  
Author(s):  
Hitoshi Miyakawa ◽  
Maki Imai ◽  
Naoki Sugimoto ◽  
Yuki Ishikawa ◽  
Asano Ishikawa ◽  
...  
Keyword(s):  
Daphnia Pulex ◽  
Water Flea

scholarly journals Polygenic variation in sexual investment across an ephemerality gradient in Daphnia pulex

2021 ◽  
Author(s):  
Karen B Barnard-Kubow ◽  
Dörthe Becker ◽  
Connor S Murray ◽  
Robert Porter ◽  
Grace Gutierrez ◽  
...  
Keyword(s):  
Reproductive Strategy ◽  
Evolutionary Dynamics ◽  
Daphnia Pulex ◽  
Clonal Diversity ◽  
Basic Question ◽  
Male Production ◽  
Dynamic Nature ◽  
Quantitative Genetic ◽  
History Of ◽  
Polygenic Variation

Species across the tree of life can switch between asexual and sexual reproduction. In facultatively sexual species, the ability to switch between reproductive modes is often environmentally dependent and subject to local adaptation. However, the ecological and evolutionary factors that influence the maintenance and turnover of polymorphism associated with facultative sex remain unclear. To address this basic question, we studied the ecological and evolutionary dynamics of polymorphism in reproductive strategy in a metapopulation of the model facultative sexual, Daphnia pulex, located in the southern United Kingdom. We found that patterns of clonal diversity, but not genetic diversity varied with ephemerality. Reconstruction of a multi-year pedigree demonstrated the co-existence of clones that were found to differ in their investment into male production. Mapping of quantitative variation in male production using lab-generated and field-collected individuals identified multiple putative QTL underlying this trait, and we identified a plausible candidate gene. The evolutionary history of these QTL suggests that they are relatively young, and male limitation in this system is a rapidly evolving trait. Our work highlights the dynamic nature of the genetic structure and composition of facultative sex across space and time and suggests that quantitative genetic variation in reproductive strategy can undergo rapid evolutionary turnover.

Photoperiodism of Male Offspring Production in the Water Flea Daphnia pulex

2017 ◽  
Vol 34 (4) ◽  
pp. 312 ◽  
Author(s):  
Kenji Toyota ◽  
Tomomi Sato ◽  
Norihisa Tatarazako ◽  
Taisen Iguchi
Keyword(s):  
Daphnia Pulex ◽  
Male Offspring ◽  
Water Flea ◽  
Offspring Production

Effect of Juvenoids on Predator-Induced Polyphenism in the Water Flea,Daphnia pulex

2013 ◽  
Vol 319 (8) ◽  
pp. 440-450 ◽  
Author(s):  
Hitoshi Miyakawa ◽  
Hiroki Gotoh ◽  
Naoki Sugimoto ◽  
Toru Miura
Keyword(s):  
Daphnia Pulex ◽  
Water Flea

scholarly journals Ionotropic Glutamate Receptors Mediate Inducible Defense in the Water Flea Daphnia pulex

PLoS ONE ◽  
2015 ◽  
Vol 10 (3) ◽  
pp. e0121324 ◽  
Author(s):  
Hitoshi Miyakawa ◽  
Masanao Sato ◽  
John K. Colbourne ◽  
Taisen Iguchi
Keyword(s):  
Glutamate Receptors ◽  
Daphnia Pulex ◽  
Ionotropic Glutamate Receptors ◽  
Inducible Defense ◽  
Water Flea

METHOPRENE AND 20-OH-ECDYSONE AFFECT MALE PRODUCTION IN DAPHNIA PULEX

2001 ◽  
Vol 20 (3) ◽  
pp. 582 ◽  
Author(s):  
Jane K. Peterson ◽  
Donna R. Kashian ◽  
Stanley I. Dodson
Keyword(s):  
Daphnia Pulex ◽  
Male Production
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