Results 151 to 160 of about 949 (172)
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Journal of Systematics and Evolution, 2019
AbstractThe evolutionary pathway between hermaphroditism and dioecy (females and males in a single population) draws widespread interests, and androdioecy (bisexuals and males in a single population) is rarely achieved as an intermediate state between the two breeding systems.
Gui‐Liang Xin +5 more
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AbstractThe evolutionary pathway between hermaphroditism and dioecy (females and males in a single population) draws widespread interests, and androdioecy (bisexuals and males in a single population) is rarely achieved as an intermediate state between the two breeding systems.
Gui‐Liang Xin +5 more
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Pollen Limitation and the Evolution of Androdioecy from Dioecy
The American Naturalist, 2004Androdioecy is an unusual breeding system in which populations consist of separate male and hermaphrodite individuals. The evolution of androdioecy is still poorly understood; however, there is evidence from several androdioecious species that the breeding system may have evolved from dioecy (males and females).
Diana E, Wolf, Naoki, Takebayashi
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Androdioecy and the evolution of dioecy
Biological Journal of the Linnean Society, 1984The likelihood that dioecy could evolve via androdioecy is examined. It is concluded that female-sterility mutations are unlikely to be able to invade populations of self-compatible hermaphrodite species, even if the resources that an hermaphrodite devotes to seed production can be diverted to yield increased survival and also to increase male ...
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Functional androdioecy in the flowering plant Datisca glomerata
Nature, 1990THE role of androdioecy (the presence of male and hermaphrodite individuals in a breeding population) in the evolution of dioecy has long been the subject of much interest and discussion1–9. But no functionally androdioecious species has been previously documented2 and recent studies have even raised doubt about whether the phenomenon exists at all3 ...
Aaron Liston +2 more
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Is Phillyrea angustifolia L. (Oleaceae) an androdioecious species?
Botanical Journal of the Linnean Society, 1992LEPART, J. & DOMMEE B., 1992. Is Phillyrea angustifolia L. (Oleaceae) an androdioecious species? Observations during two or three years on three natural populations of Phillyrea angustifolia growing in contrasting environments in southern France show that two distinct phenotypes occur in approximately equal proportions: hermaphrodites, which produce ...
JACQUES LEPART, BERTRAND DOMMÉE
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Intersexual conflict during mate guarding in an androdioecious crustacean
Behavioral Ecology, 2012Traditional interpretations of mating behaviors assume cooperation between the sexes. The field of sexual conflict provides a contrasting view: The sexes are commonly in conflict because they diverge in benefits/costs of reproduction. Precopulatory mate guarding, wherein males attempt to monopolize mates by physically pairing before fertilization, is ...
Chiara Benvenuto, Stephen C. Weeks
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Stylogyne rodriguesiana (Myrsinaceae): A New Androdioecious Species from Amazonia
Novon, 1991(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Hydrobiologia, 1995
The clam shrimpEulimnadia texana is an androdioecious crustacean in which hermaphrodites may self fertilize or outcross with males but cannot outcross with other hermaphrodites. Outcrossing is maintained within most populations of this species despite the high genetic cost of sex, suggesting that compensating factors provide an advantage to outcrossing.
Lana Knoll, Naida Zucker
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The clam shrimpEulimnadia texana is an androdioecious crustacean in which hermaphrodites may self fertilize or outcross with males but cannot outcross with other hermaphrodites. Outcrossing is maintained within most populations of this species despite the high genetic cost of sex, suggesting that compensating factors provide an advantage to outcrossing.
Lana Knoll, Naida Zucker
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INBREEDING DEPRESSION IN ANDRODIOECIOUS POPULATIONS OF DATISCA GLOMERATA (DATISCACEAE)
American Journal of Botany, 1993Several workers have suggested that the rarity of androdioecy (the presence of males and hermaphrodites in a breeding population) in nature is due to the large fitness gain required by male plants in order to be maintained by selection. As part of an ongoing investigation of this hypothesis, we tested the effects of selfing on fitness in functionally ...
Loren H. Rieseberg +4 more
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Morphological traits in an androdioecious species, Chionanthus retusus (Oleaceae)
Flora, 2016Abstract Androdioecy is a reproductive system in which males coexist with hermaphrodites, which have both male and female functions. We present here the morphological differences in the sexual morph of flowers in Chionanthus retusus , an androdioecious species.
Jun-Ho Song +2 more
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