Results 11 to 20 of about 43,736 (288)
Changing Gender Relations in Canada: The Rise of Gender-Neutral Forenames. [PDF]
Can Rev SociolABSTRACT Historically, gender‐neutral or androgynous first names have been relatively rare, showing little sign of upward or downward temporal trend in Canada or elsewhere. Using digitized birth registration records from three provinces (Alberta, British Columbia, and Ontario) and for all of Canada, we highlight a rise, beginning around 1990, in the ...
Guppy N, Kolpashnikova K.
europepmc +2 more sources
Evidence for cryptic speciation in directly transmitted Gyrodactylid parasites of Trinidadian guppies [PDF]
, 2015 Cryptic species complexes are common among parasites, which tend to have large populations and are subject to rapid evolution. Such complexes may arise through host-parasite co-evolution and/or host switching.
Cable, Jo +5 more
core +9 more sources
Postcopulatory inbreeding avoidance in guppies [PDF]
Journal of Evolutionary Biology, 2014 AbstractIn many species, the negative fitness effects of inbreeding have facilitated the evolution of a wide range of inbreeding avoidance mechanisms. Although avoidance mechanisms operating prior to mating are well documented, evidence for postcopulatory mechanisms of inbreeding avoidance remain scarce.
J L, Fitzpatrick, J P, Evans
openaire +2 more sources
مجلة المختار للعلوم, 2021 This study was carried out to evaluate the growth response of guppy Poecilia reticulata to different dietary protein levels. A total of 72 fry of guppy fish of an initial body weight 0.365± 0.01g were distributed randomly into 60 L aquaria at the ...
Abdalbast H. Fadel +3 more
doaj +1 more source
Improved Reference Genome Uncovers Novel Sex-Linked Regions in the Guppy (Poecilia reticulata)
bioRxiv, 2020 Theory predicts that the sexes can achieve greater fitness if loci with sexually antagonistic polymorphisms become linked to the sex determining loci, and this can favour the spread of reduced recombination around sex determining regions.
Bonnie A. Fraser +12 more
semanticscholar +1 more source
Evolution of non-kin cooperation: social assortment by cooperative phenotype in guppies [PDF]
Royal Society Open Science, 2019 Cooperation among non-kin constitutes a conundrum for evolutionary biology. Theory suggests that non-kin cooperation can evolve if individuals differ consistently in their cooperative phenotypes and assort socially by these, such that cooperative ...
Josefine Bohr Brask +10 more
doaj +1 more source
Consistent Behavioral Syndrome Across Seasons in an Invasive Freshwater Fish
Frontiers in Ecology and Evolution, 2021 Understanding the linkage between behavioral types and dispersal tendency has become a pressing issue in light of global change and biological invasions.
Juliane Lukas +11 more
doaj +1 more source
bioRxiv, 2020 Genetic and physical mapping of the guppy (P. reticulata) have shown that recombination patterns differ greatly between males and females. Crossover events occur evenly across the chromosomes in females, but in male meiosis they are restricted to the tip
D. Charlesworth +5 more
semanticscholar +1 more source
Copper sulfate acute ecotoxicity and environmental risk for tropical fish
Acta Scientiarum: Biological Sciences, 2014 The aim of this study was to estimate copper sulfate acute toxicity and to determine death percentage and environmental risk on guppy fish (Phallocerus caudimaculatus), zebrafish (Brachydanio rerio), mato grosso (Hyphessobrycon eques), and pacu ...
Adilson Ferreira da Silva +4 more
doaj +1 more source
Locating the Sex Determining Region of Linkage Group 12 of Guppy (Poecilia reticulata)
bioRxiv, 2020 We describe new genetic mapping results from 6 full-sib families in the guppy (Poecilia reticulata), two of which included recombinants between the X and Y chromosomes.
D. Charlesworth +4 more
semanticscholar +1 more source