Search Results - "Rodd, F. H."

Evaluation of the Rate of Evolution in Natural Populations of Guppies (Poecilia reticulata) by Reznick, David N., Shaw, Frank H., Rodd, F. Helen, Shaw, Ruth G.

“…Natural populations of guppies were subjected to an episode of directional selection that mimicked natural processes. The resulting rate of evolution of age…”
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Familiarity leads to female mate preference for novel males in the guppy, Poecilia reticulata by HUGHES, KIMBERLY A., DU, LINH, RODD, F.HELEN, REZNICK, DAVID N.

“…Guppies are a model vertebrate for studies of sexual selection and life history evolution. None the less, there have been few investigations of the factors…”
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Genetic and environmental effects on secondary sex traits in guppies (Poecilia reticulata) by Hughes, K. A., Rodd, F. H., Reznick, D. N.

“…Male guppies (Poecilia reticulata) exhibit extreme phenotypic and genetic variability for several traits that are important to male fitness, and several lines…”
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The Suitability of Calcein to Mark Poeciliid Fish and a New Method of Detection by Leips, J., Baril, C. T., Rodd, F. H., Reznick, D. N., Bashey, F., Visser, G. J., Travis, J.

“…The suitability of calcein as a marker for population studies depends on (1) the assumption that marked individuals have unaltered viability, (2) the fidelity…”
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Tracking the startle response of guppies Poecilia reticulata in three dimensions by Vanesyan, A., Rodd, F. H., Ryu, W. S.

“…A three‐dimensional analysis of startle behaviours of guppies Poecilia reticulata, in dyads or alone, from two populations that show distinct differences in…”
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Sexual colouration and sperm traits in guppies by Pitcher, T. E., Rodd, F. H., Rowe, L.

“…The relationships among the area, hue, saturation and brightness of orange colouration and sperm traits in the guppy Poecilia reticulata were investigated…”
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The role of predation in variation in body shape in guppies Poecilia reticulata: a comparison of field and common garden phenotypes by Burns, J. G., Di Nardo, P., Rodd, F. H.

“…The body shapes of both wild‐caught and laboratory‐reared male and female Trinidadian guppies Poecilia reticulata from two low‐predation and two high‐predation…”
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The role of learning by a predator, Rivulus hartii, in the rare‐morph survival advantage in guppies by Fraser, B. A., Hughes, K. A., Tosh, D. N., Rodd, F. H.

“…Negative frequency‐dependent selection (NFDS), where rare types are favoured by selection, can maintain diversity. However, the ecological processes that…”
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Genetic Influences on Experimental Population Dynamics of the Least Killifish by Leips, Jeff, Travis, Joseph, Rodd, F. Helen

“…When natural populations differ in density or in the dynamic fluctuations of population size, some of those differences may result from their different…”
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Phenotypic Plasticity in the Life History Traits of Guppies: Responses to Social Environment by Rodd, F. Helen, Reznick, David N., Sokolowski, Marla B.

“…Guppies (Poecilia reticulata) living in the streams and rivers of Trinidad show significant interpopulation variation in life history traits. Some of the…”
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A possible non-sexual origin of mate preference: are male guppies mimicking fruit? by Rodd, F. Helen, Hughes, Kimberly A., Grether, Gregory F., Baril, Colette T.

“…) generally show a preference for males with larger, more chromatic orange spots. It has been proposed that this preference originated because it enabled…”
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Complex origins of variation in the sexual behaviour of male Trinidadian guppies,Poecilia reticulata: interactions between social environment, heredity, body size and age by RODD, HELEN F., SOKOLOWSKI, MARLA B.

“…Field observations have shown that there are inter-population differences in the sexual behaviour of male guppies in Trinidad. The greatest differences are…”
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Multiple mating and sequential mate choice in guppies: females trade up by Pitcher, Trevor E., Neff, Bryan D., Rodd, F. Helen, Rowe, Locke

“…Poecilia reticulata…”
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Life-History Evolution in Guppies (Poecilia reticulata) 6. Differential Mortality as a Mechanism for Natural Selection by Reznick, David N., Butler, Mark J., Rodd, F. Helen, Ross, Patrick

“…We have previously reported a correlation between the life-history patterns of guppies and the types of predators with which they coexist. Guppies from…”
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Regulation of Breeding Density in Microtus pennsylvanicus by Boonstra, Rudy, Rodd, F. Helen

“…(1) This study tests the hypothesis that breeding density in polygamous microtines is determined by breeding females, which compete for space to rear young…”
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Effects of Adult Meadow Voles, Microtus pennsylvanicus, on Young Conspecifics in Field Populations by Rodd, F. Helen, Boonstra, Rudy

“…(1) We investigated the influence of Microtus pennsylvanicus adults on young conspecifics by manipulating the density or sex ratio of the adult segment of…”
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Variation in the Demography of Guppy Populations: The Importance of Predation and Life Histories by Rodd, F. Helen, Reznick, David N.

“…We compare the demography of natural populations of guppies (Poecilia reticulata) coexisting with two different communities of predators. In some populations,…”
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Population-Dynamic Consequences of Predator-Induced Life History Variation in the Guppy (Poecilia reticulata) by Bronikowski, Anne M., Clark, Mark E., Rodd, F. Helen, Reznick, David N.

“…A fundamental goal of population ecology is to quantify how spatial and temporal variation in life history traits translates into variation in population-level…”
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Hastiness, brain size and predation regime affect the performance of wild guppies in a spatial memory task by Burns, James G., Rodd, F. Helen

“…The ability to return to, or avoid, specific locations is often critical to fitness-related activities. We tested for differences in spatial memory of guppies,…”
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Life History Evolution in Guppies: III. The Impact of Prawn Predation on Guppy Life Histories by Rodd, F. Helen, Reznick, David N.

“…Male Trinidadian guppies (Poecilia reticulata) that co-occur with a large, predatory prawn, Macrobrachium crenulatum, have colour patterns that are strikingly…”
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