Research Topics
| Bryan D NeffSummaryAffiliation: University of Western Ontario Country: Canada Publications
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Detail Information
Publications
Genetic life history effects on juvenile survival in bluegillB D Neff
Department of Biology, University of Western Ontario, London, Ontario, Canada
J Evol Biol 20:517-25. 2007..87 times higher fitness than the parental life history. As such, the life histories likely are not governed by a genetic polymorphism...
Inter-population variation in multiple paternity and reproductive skew in the guppyBryan D Neff
Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON, Canada
Mol Ecol 17:2975-84. 2008..We discuss explanations for the high degree of multiple paternity but the general lack of any major differences among broods from ecologically different populations...- The MHC and non-random mating in a captive population of Chinook salmonB D Neff
Department of Biology, University of Western Ontario, London, Ontario, Canada
Heredity (Edinb) 101:175-85. 2008..These results indicate that sexual selection favours increased body size and perhaps integument coloration in males as well as increases genetic diversity at the MHC by female mate choice... - Mate choice for non-additive genetic benefits: a resolution to the lek paradoxBryan D Neff
Department of Biology, University of Western Ontario, 1151 Richmond Street, London, Ontario, Canada N6A 5B7
J Theor Biol 254:147-55. 2008..Our model contributes to the solution of the lek paradox... - Genetic quality and sexual selection: an integrated framework for good genes and compatible genesBryan D Neff
Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada
Mol Ecol 14:19-38. 2005..Fifth, we discuss some future directions for research on genetic quality and sexual selection... - Mechanisms of sperm competition: testing the fair raffleBryan D Neff
Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada
Evolution 58:1846-51. 2004..We apply our model to an example of sperm competition in the guppy (Poecilia reticulata) and show that the system may be characterized by a loaded raffle attributable to effects of second male precedence... - Mean d(2) and divergence time: transformations and standardizationsB D Neff
Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada
J Hered 95:165-71. 2004..However, gene flow of as little as 1% per generation can significantly reduce the ability of either mean d(2) or heterozygosity to estimate divergence time... 
Stabilizing selection on genomic divergence in a wild fish populationBryan D Neff
Department of Biology, University of Western Ontario, London, ON, Canada N6A 5B7
Proc Natl Acad Sci U S A 101:2381-5. 2004..I also show that breeding individuals that exercise mate choice produce offspring that are closer to the optimal level of genomic divergence than random mating alone would predict...- Mate choice for nonadditive genetic benefits and the maintenance of genetic diversity in song sparrowsB D Neff
Department of Biology, University of Western Ontario, London, ON, Canada
J Evol Biol 22:424-9. 2009..Thus, mate choice may help to stave off population extinction in this and other small populations... - Paternity, parental behavior and circulating steroid hormone concentrations in nest-tending male bluegillBryan D Neff
Department of Biology, University of Western Ontario, 1151 Richmond Street N, London, Ontario N6A 5B7, Canada
Horm Behav 56:239-45. 2009..We discuss these results in relation to previous work in fishes and other vertebrate taxa. Overall, our data suggest a complex relationship between circulating steroid hormone levels, paternity and parental behavior... - Decisions about parental care in response to perceived paternityBryan D Neff
Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada
Nature 422:716-9. 2003..These results confirm the importance of genetic relatedness in parental care decision-making... - Nestling recognition via direct cues by parental male bluegill sunfish ( Lepomis macrochirus)Bryan D Neff
Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada
Anim Cogn 6:87-92. 2003..Results confirm that chemicals cue nestling recognition by parental male bluegill... - A Bayesian model for assessing the frequency of multiple mating in natureB D Neff
Department of Biology, Biological and Geological Sciences Building, University of Western Ontario, London N6A 5B7, Ontario, Canada
J Hered 93:406-14. 2002.... - Decision making and recognition mechanismsBryan D Neff
Department of Biology, University of Western Ontario, London, Canada N6A 5B7
Proc Biol Sci 269:1435-41. 2002.... - Microsatellite evolution in vertebrates: inference from AC dinucleotide repeatsB D Neff
Department of Zoology, University of Western Ontario, London, Canada
Evolution 55:1717-33. 2001..Finally, published microsatellite loci (isolated using conventional hybridization methods) provide a biased estimate of the actual mean repeat length of microsatellites in the genome... - Multiple paternity and kin recognition mechanisms in a guppy populationTimothy J A Hain
Department of Biology, University of Western Ontario, London, Ontario, Canada N6A 5B7
Mol Ecol 16:3938-46. 2007..Overall, these data provide support for the kin recognition hypothesis and increase our understanding of the evolution of kin recognition systems... - Major histocompatibility complex heterozygote advantage and widespread bacterial infections in populations of Chinook salmon (Oncorhynchus tshawytscha)Melissa L Evans
Department of Biology, University of Western Ontario, 1151 Richmond St N, London, ON, N6A 5B7, Canada
Mol Ecol 18:4716-29. 2009..Our results reveal a complex bacterial community infecting populations of a fish and underscore the importance of considering the role of multiple pathogens in the evolution of host adaptations... - Promiscuity drives self-referent kin recognitionTimothy J A Hain
Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada
Curr Biol 16:1807-11. 2006..06. These results provide compelling evidence for adaptive use of kin recognition by self-referent phenotype matching and confirm the importance of kinship in social behavior... - Plasma levels of androgens and cortisol in relation to breeding behavior in parental male bluegill sunfish, Lepomis macrochirusSarah E Magee
Department of Biology, University of Western Ontario, 1151 Richmond Street N, London, Ontario, Canada N6A 5B7
Horm Behav 49:598-609. 2006.... - Parasite mediated homogenizing selection at the MHC in guppiesBonnie A Fraser
Department of Biology, University of Western Ontario, London, Ontario, Canada
Genetica 138:273-8. 2010..These results not only link parasite infection with MHC genotype, they provide a mechanism of homogenizing selection across these otherwise disparate populations... - Sexual conflict inhibits female mate choice for major histocompatibility complex dissimilarity in Chinook salmonShawn R Garner
Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
Proc Biol Sci 277:885-94. 2010..These data suggest that male harassment can reduce female effectiveness in selecting MHC-compatible mates, and sexual conflict can thus have an indirect cost to females... - The metabolic, locomotor and sex-dependent effects of elevated temperature on Trinidadian guppies: limited capacity for acclimationNicolas J Muñoz
Department of Biology, University of Western Ontario, London, ON, Canada N6A 5B7
J Exp Biol 215:3436-41. 2012..Also, because larger females have higher fecundity, our data suggest that fecundity will be reduced in a warmer climate, potentially decreasing the viability of guppy populations... - MHC class IIB alleles contribute to both additive and nonadditive genetic effects on survival in Chinook salmonTrevor E Pitcher
Department of Biology, University of Western Ontario, London, Ontario, Canada N6A 5B7
Mol Ecol 15:2357-65. 2006..Such nonrandom segregation could further reduce variability at the MHC and may explain why Chinook salmon has one of the lowest levels of MHC diversity of all vertebrates... - MHC genetic structure and divergence across populations of Chinook salmon (Oncorhynchus tshawytscha)M L Evans
Department of Biology, University of Western Ontario, Ontario, Canada
Heredity (Edinb) 104:449-59. 2010..Together, these results support the hypothesis that selection is influencing genetic variation at the MHC, but suggest that selection pressures may vary at the two classes of loci both at the sequence and population levels... - Parentage analysis with incomplete sampling of candidate parents and offspringB D Neff
Department of Zoology, University of Toronto, Toronto, Ontario, Canada M5S 3G5
Mol Ecol 9:515-28. 2000.... - Multiple mating and sequential mate choice in guppies: females trade upTrevor E Pitcher
Department of Zoology, University of Toronto, 25 Harbord Street, Toronto, Ontario M5S 3G5, Canada
Proc Biol Sci 270:1623-9. 2003..Our results suggest that female guppies may use pre-copulatory mechanisms to maximize the genetic quality of their offspring... - A bayesian framework for parentage analysis: the value of genetic and other biological dataB D Neff
Department of Zoology, University of Western Ontario, London, Ontario N6A 5B7, Canada
Theor Popul Biol 59:315-31. 2001..In bluegill, multiple males and multiple females may mate in a single nest. For a nest, we calculate the fertilization success and the 95% confidence interval of each candidate parent pair... - Pollution-induced behavioural effects in the brown bullhead (Ameiurus nebulosus)Ross D Breckels
Department of Biology, University of Western Ontario, London, ON, N6A 5B7, Canada
Ecotoxicology 19:1337-46. 2010..We discuss our data with respect to the potential adaptation of populations to pollution and the implications for prioritizing remediation efforts... - MHC class IIB additive and non-additive effects on fitness measures in the guppy Poecilia reticulataB A Fraser
Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B7 Canada
J Fish Biol 75:2299-312. 2009..Thus, the genetic architecture underlying fitness at the MHC is complex in the P. reticulata... - Quantitative genetic and translocation experiments reveal genotype-by-environment effects on juvenile life-history traits in two populations of Chinook salmon (Oncorhynchus tshawytscha)M L Evans
Department of Biology, University of Western Ontario, London, Ontario, Canada
J Evol Biol 23:687-98. 2010..These results indicate genetic differences among individuals in their degree of plasticity and consequently their ability to respond to environmental variation... - A program to compare genetic differentiation statistics across loci using resampling of individuals and lociBryan D Neff
Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON, Canada N6A 5B7
Mol Ecol Resour 10:546-50. 2010..We demonstrate the program using previously published data on the genetic differentiation at a major histocompatibility complex locus and at microsatellite loci across 10 populations of the guppy (Poecilia reticulata)... - Dynamic adjustment of parental care in response to perceived paternityB D Neff
Department of Zoology, University of Toronto, 25 Harbord Street, Toronto, Ontario, Canada M5S 3G5
Proc Biol Sci 268:1559-65. 2001..This dynamic adjustment during brood rearing indicates the importance of genetic relatedness in parental investment decisions and provides needed empirical support for theoretical predictions... - Selection at the MHC class IIB locus across guppy (Poecilia reticulata) populationsB A Fraser
Department of Biology, University of Western Ontario, London, Ontario, Canada
Heredity (Edinb) 104:155-67. 2010..Overall, our data provide evidence for selection for functional diversity at the MHC class IIB gene at both the population and nucleotide levels of guppy populations... - Tactic-specific success in sperm competitionP Fu
Department of Zoology, University of Toronto, 25 Harbord Street, Toronto, Ontario, Canada M5R 1G6
Proc Biol Sci 268:1105-12. 2001..In addition, we show that sneakers are superior to satellites in sperm competition and, thus, that even among sneaks there are tactic-specific differences in competitive success... - Sperm competition in a fish with external fertilization: the contribution of sperm number, speed and lengthJ A Stoltz
Department of Biology, University of Western Ontario, London, Ontario, Canada
J Evol Biol 19:1873-81. 2006..58 times as many sperm as parentals to obtain equal paternity. Thus, the increased competitiveness of sneakers' sperm must come from a component of sperm quality other than speed or length... - Dietary carotenoid levels affect carotenoid and retinoid allocation in female Chinook salmon Oncorhynchus tshawytschaS R Garner
Department of Biology, University of Western Ontario, London, Ontario, N6A 5B7 Canada
J Fish Biol 76:1474-90. 2010..Egg carotenoid concentrations were not correlated with either skin carotenoid concentration or colouration, which suggests that female carotenoid displays are not a reliable signal that males can use to evaluate egg carotenoid resources... - Microsatellite genetic differentiation among populations of the Trinidadian guppyH Y Suk
Department of Biology, University of Western Ontario, London, Ontario, Canada
Heredity (Edinb) 102:425-34. 2009..Our analysis details the genetic and phylogeographic structure of Trinidadian guppies in the northern range and provides insight into evolutionary processes at different timescales that have shaped genetic heterogeneity in this fish... - Behavioural ecology: father knows bestPaul W Sherman
Nature 425:136-7. 2003 - Steroid hormones in bluegill, a species with male alternative reproductive tactics including female mimicryRosemary Knapp
Department of Zoology, University of Oklahoma, 730 Van Vleet Oval, Norman, OK 73019, USA
Biol Lett 3:628-31. 2007..Although such decreased hormone dependence of mating behaviour has been reported in other taxa, our data represent the first suggestion of the relationship in fishes... - Condition-dependent nesting in bluegill sunfish Lepomis macrochirusLuca M Cargnelli
Restoration Programs Division, Environment Canada, 867 Lakeshore Road, Burlington, Ontario L7R 4A6, Canada
J Anim Ecol 75:627-33. 2006..7. These data suggest that both energetics and adaptive behaviour play roles in determining the timing of reproduction...