scholarly journals Models of selective mating and the initiation of the Fisherian process

1997 ◽  
Vol 264 (1383) ◽  
pp. 839-844 ◽  
Author(s):  
Kiyosi Takahasi
Keyword(s):  

Evolution ◽  
1950 ◽  
Vol 4 (4) ◽  
pp. 326-331 ◽  
Author(s):  
David J. Merrell




1968 ◽  
Vol 15 (2) ◽  
pp. 141-143 ◽  
Author(s):  
Richard Lewontin ◽  
Dudley Kirk ◽  
James Crow


PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261004
Author(s):  
Aya Sato ◽  
Ryu-ichi Aihara ◽  
Kenji Karino

The trade-up hypothesis is a female behavioral strategy related to mating with multiple males. In this hypothesis, females can produce high-quality offspring while avoiding the risk of losing reproductive opportunities by non-selective mating with males at first mating and then re-mating with more attractive males. As an internal mechanism to realize this behavioral strategy, we predicted that females would immediately fertilize their eggs when they mated with attractive males, whereas females would delay fertilization when they mated with unattractive males to trade-up sires of offspring. The guppy (Poecilia reticulata) is an ovoviviparous fish with internal fertilization, and females show a clear mate preference based on the area of orange coloration on the bodies of males. In addition, it is known that females show a re-mating strategy consistent with the trade-up hypothesis. We tested whether the attractiveness of mated males affected the gestation period and the timing of fertilization. Females were paired with either colorful males or drab males, and the gestation periods (the number of days from mating to parturition) were compared. In addition, we dissected the abdomens of the females at intervals of several days after mating and observed whether the eggs were fertilized. The gestation period in females that were paired with attractive colorful males was significantly shorter than that in females that were paired with drab males. We found that females that mated with colorful males also had their eggs fertilized earlier than those that mated with drab males. Our findings show that differences in the timing of fertilization according to attractiveness of the mate increase the opportunity for cryptic female choice and trading up.



2016 ◽  
Vol 50 (3) ◽  
pp. 279-282
Author(s):  
E. A. Artemieva ◽  
A. V. Mishchenko ◽  
D. K. Makarov

Abstract Phenotypic and genotypic diversity of populations of species of the yellow wagtails in the space of their ranges in a wide sympatry reflects the mechanisms of reproductive isolation of species and forms of subspecies rank and features of microevolution group - polytypic complex Motacilla flava Linnaeus, 1758. The distribution of species of the yellow wagtails in the European part of Russia is sympatric. The purpose of this study was to investigate whether sympatric settlement led to any genetic separation between the populations of these species. 20 blood samples and 2 samples of eggs collected in areas geographically representing the MID and the southern Russian breeding populations of these species, including all juvenile ringed in 2012, were used. After the polymerase chain reaction (PCR) 4 types of the yellow wagtails group Motacilla flava L., 1758; M. feldegg Michahelles, 1830; M. lutea (S. G. Gmelin, 1774); M. cilreola Pallas, 1776 (Passeriformes, Motacillidae) were sequenced. After aligning the sequences of the gene cytochrome oxidase I, based on the comparison of genetic distances between these species phylogenetic tree of genus Motacilla was constructed. These results suggest that, despite the broad sympatry in nesting places, there is a selective mating between males and females of each species studied in spite of the free crossing and insulating mechanisms in populations.





2005 ◽  
Vol 171 (1) ◽  
pp. 225-241 ◽  
Author(s):  
James Braselton ◽  
Martha Abell ◽  
Lorraine Braselton


1981 ◽  
Vol 15 (1) ◽  
pp. 114 ◽  
Author(s):  
A. John Gatz


Blood ◽  
1979 ◽  
Vol 53 (4) ◽  
pp. 712-719 ◽  
Author(s):  
DN Fass ◽  
EJ Bowie ◽  
CA Jr Owen ◽  
PE Zollman

Abstract A study of over 700 pigs affected with von Willebrand's disease suggests that the classic disease is transmitted as an autosomal recessive trait. Less clear is the genetic basis of inheritance of variant types of this disease produced by selective mating.



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