Red Queen revisited: Immune gene diversity and parasite load in the asexual Poecilia formosa versus its sexual host species P. mexicana. [PDF]
PLoS ONE, 2019 In accordance with the Red Queen hypothesis, the lower genotypic diversity in clonally reproducing species should make them easier targets for pathogen infection, especially when closely related sexually reproducing species occur in close proximity.
Fabian Gösser +4 more
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Paternal effects without paternity? Testing non-genetic male influence on offspring size and brood size in a gynogenetic vertebrate, the Amazon molly (Poecilia formosa). [PDF]
PLoS ONEPaternal effects, i.e., effects of fathers on the phenotype of their offspring that are not mediated by the transmission of alleles, are increasingly recognized as a potentially significant source of phenotypic variation across taxa - even in the absence
Ulrike Scherer +4 more
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Quantifying the threat of extinction from Muller's ratchet in the diploid Amazon molly (
BMC Evolutionary Biology, 2008 Background The Amazon molly (Poecilia formosa) is a small unisexual fish that has been suspected of being threatened by extinction from the stochastic accumulation of slightly deleterious mutations that is caused by Muller's ratchet in non-recombining ...
Loewe Laurence, Lamatsch Dunja K
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Poecilia mexicana is the Recent Female Parent of the Unisexual Fish P. formosa [PDF]
Evolution, 1991 Poecilia formosa, a small live-bearing fish native to northeastern Mexico, was the first recognized vertebrate with unisexual reproduction (Hubbs and Hubbs, 1932). This all-female "species" produces diploid apomictic eggs (Rasch et al., 1982; Monaco et al., 1984), and embryogenesis is subsequently activated by sperm from a related bisexual species ...
John C. Avise +3 more
exaly +9 more sources
Stable inheritance of host species-derived microchromosomes in the gynogenetic fish Poecilia formosa. [PDF]
Genetics, 2007 Abstract B chromosomes are additional, usually unstable constituents of the genome of many organisms. Their origin, however, is often unclear and their evolutionary relevance is not well understood. They may range from being deleterious to neutral or even beneficial.
Nanda I +5 more
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Kin Recognition in a Clonal Fish, Poecilia Formosa [PDF]
PLOS ONE, 2016 AbstractRelatedness strongly influences social behaviors in a wide variety of species. For most species, the highest typical degree of relatedness is between full siblings with 50% shared genes. However, this is poorly understood in species with unusually high relatedness between individuals: clonal organisms. Although there has been some investigation
Amber M. Makowicz +3 more
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The origin and evolution of a unisexual hybrid: Poecilia formosa. [PDF]
Philos Trans R Soc Lond B Biol Sci, 2008 Clonal reproduction in vertebrates can always be traced back to hybridization events as all known unisexual vertebrates are hybrids between recognized species or genetically defined races. Interestingly, clonal vertebrates often also rely on interspecific matings for their reproduction because gynogenesis (sperm-dependent parthenogenesis) and ...
Lampert KP, Schartl M.
europepmc +4 more sources
Do Females in a Unisexual-Bisexual Species Complex Differ in Their Behavioral Syndromes and Cortisol Production? [PDF]
Biology, 2021 Studies of suites of correlated behavioral traits (i.e., behavioral syndromes) aid in understanding the adaptive importance of behavioral evolution. Behavioral syndromes may be evolutionarily constrained, preventing behaviors from evolving independently,
James J. Muraco +3 more
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Monophyletic origin of multiple clonal lineages in an asexual fish (Poecilia formosa) [PDF]
Molecular Ecology, 2010 AbstractDespite the advantage of avoiding the costs of sexual reproduction, asexual vertebrates are very rare and often considered evolutionarily disadvantaged when compared to sexual species. Asexual species, however, may have advantages when colonizing (new) habitats or competing with sexual counterparts.
Matthias Stöck +4 more
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Two Locomotor Traits Show Different Patterns of Developmental Plasticity Between Closely Related Clonal and Sexual Fish [PDF]
Frontiers in Physiology, 2021 The capacity to compensate for environmental change determines population persistence and biogeography. In ectothermic organisms, performance at different temperatures can be strongly affected by temperatures experienced during early development.
Kate L. Laskowski +7 more
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