Articles with "sex ratio" as a keyword



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Rapid population sex-ratio changes in the moss Ceratodon purpureus.

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Published in 2018 at "American journal of botany"

DOI: 10.1002/ajb2.1128

Abstract: PREMISE OF THE STUDY Sex-ratio variation occurs widely in dioecious plants, but the mechanisms of population sex-ratio bias are poorly understood. In bryophytes, sex ratios are often female biased, and little information is available about… read more here.

Keywords: sex; sex ratio; population sex; sex ratios ... See more keywords
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A preliminary analysis of the secondary sex ratio decline after the COVID‐19 pandemic in Japan

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Published in 2022 at "American Journal of Human Biology"

DOI: 10.1002/ajhb.23750

Abstract: The secondary sex ratio (SSR, i.e., the number of male births per 100 female births) has long been proposed as a sentinel health indicator. Studies have suggested that exogenous environmental stressors reduce SSR after 3… read more here.

Keywords: covid pandemic; pandemic japan; secondary sex; sex ratio ... See more keywords
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Genotypic confirmation of a biased phenotypic sex ratio in a dryland moss using restriction fragment length polymorphisms

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Published in 2022 at "Applications in Plant Sciences"

DOI: 10.1002/aps3.11467

Abstract: Abstract Premise In dioicous mosses, sex is determined by a single U (female, ♀) or V (male, ♂) chromosome. Although a 1 : 1 sex ratio is expected following meiosis, phenotypic sex ratios based on… read more here.

Keywords: phenotypic sex; sex expression; sex ratio; sex ... See more keywords
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Opposing effects of mortality factors on progeny operational sex ratio may thwart adaptive manipulation of primary sex ratio

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Published in 2017 at "Ecology and Evolution"

DOI: 10.1002/ece3.3071

Abstract: Abstract Despite extensive research on mechanisms generating biases in sex ratios, the capacity of natural enemies to shift or further skew operational sex ratios following sex allocation and parental care remains largely unstudied in natural… read more here.

Keywords: sex ratio; sex ratios; mortality; operational sex ... See more keywords
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Evidence for a male‐biased sex ratio in the offspring of a large herbivore: The role of environmental conditions in the sex ratio variation

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Published in 2022 at "Ecology and Evolution"

DOI: 10.1002/ece3.8938

Abstract: Abstract Numerous studies have examined whether the primary and/or secondary sex ratio in mammals, including humans, deviates from an equilibrium of 1:1. Although effect size in the sex ratio variation is expected to be low,… read more here.

Keywords: male biased; sex; roe deer; sex ratio ... See more keywords
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AOP Report: Adverse Outcome Pathways for Aromatase Inhibition or Androgen Receptor Agonism Leading to Male‐Biased Sex Ratio and Population Decline in Fish

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Published in 2023 at "Environmental Toxicology and Chemistry"

DOI: 10.1002/etc.5581

Abstract: Screening and testing of potential endocrine‐disrupting chemicals for ecological effects are examples of risk assessment/regulatory activities that can employ adverse outcome pathways (AOPs) to establish linkages between readily measured alterations in endocrine function and whole… read more here.

Keywords: sex ratio; sex; population; male biased ... See more keywords
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Tomato spotted wilt orthotospovirus shifts sex ratio toward males in the western flower thrips, Frankliniella occidentalis, by down-regulating a FSCB-like gene.

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Published in 2022 at "Pest management science"

DOI: 10.1002/ps.7125

Abstract: BACKGROUND Plant viruses can facilitate their transmission by modulating the sex ratios of their insect vectors. Previously, we found that exposure to tomato spotted wilt orthotospovirus (TSWV) in the western flower thrips, Frankliniella occidentalis, led… read more here.

Keywords: sex ratio; tomato spotted; sex; fofscb like ... See more keywords
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Female-biased sex ratio despite the absence of spatial and niche segregation between sexes in alpine populations of dioecious Salix lapponum (Salicaceae)

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Published in 2018 at "Alpine Botany"

DOI: 10.1007/s00035-018-0213-6

Abstract: Dioecious plants often exhibit deviations from expected 1:1 sex ratios. Genus Salix is a notable example of the female-biased sex ratio. Quite surprisingly, there are very few studies retesting observed bias patterns from the different… read more here.

Keywords: female biased; sex; sex ratio; biased sex ... See more keywords
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Melanism, body size, and sex ratio in snakes—new data on the grass snake (Natrix natrix) and synthesis

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Published in 2020 at "Die Naturwissenschaften"

DOI: 10.1007/s00114-020-01678-x

Abstract: It is postulated that melanism in ectotherms is adaptive by enhancing thermoregulation, subsequent resource acquisition, and growth. Such effects may differ between the sexes as a result of the differential costs of self-maintenance and reproduction,… read more here.

Keywords: sex ratio; sex; melanism; body size ... See more keywords
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Boron-exposed male workers in Turkey: no change in sperm Y:X chromosome ratio and in offspring’s sex ratio

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Published in 2019 at "Archives of Toxicology"

DOI: 10.1007/s00204-019-02391-z

Abstract: Boron-associated shifts in sex ratios at birth were suggested earlier and attributed to a decrease in Y- vs. X-bearing sperm cells. As the matter is pivotal in the discussion of reproductive toxicity of boron/borates, re-investigation… read more here.

Keywords: sex ratio; exposure; ratio; male workers ... See more keywords
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Does sexual dimorphism predispose dioecious riparian trees to sex ratio imbalances under climate change?

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Published in 2018 at "Oecologia"

DOI: 10.1007/s00442-018-4190-7

Abstract: Environmental changes have resulted in significant declines in native riparian forests that are comprised largely of dioecious tree taxa, including boxelder and iconic cottonwood/willow gallery forests. Dioecious species may be especially vulnerable to the effects… read more here.

Keywords: sexual dimorphism; sex ratio; climate change; dioecious riparian ... See more keywords