Upstream guppies (Poecilia reticulata, Peters, 1859) go against the flow

Mohammed, Ryan S.; Oosterhout, Cock van; Schelkle, Bettina; Cable, Joanne; McMullan, Mark

doi:10.1590/s1676-06032012000300006

Cited by 5 publications

(4 citation statements)

References 29 publications

(4 reference statements)

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“…The overall average tendency was still toward some net downstream displacement; yet based on comparisons with an inanimate prop, this displacement was on average 41 times less than expected if the guppies had not actively aligned against the current. Hence, our results confirm that guppies located in the upstream reaches of rivers express strong positive rheotaxis: that is, a strong tendency to swim against the flow [48].…”

Section: Objective 1 Rheotaxis In Two Asymmetrically Isolated Guppy supporting

confidence: 79%

“…Thus, as seen in numerous other fishes (review in [22]), the downstream origin of the Turure fish was likely to dictate initially weak positive rheotaxis, a supposition supported by the dramatic effect their downstream movement had on native populations [15,31,33]. Further support comes from Mohammed et al (2012), who found that guppies located in lower reaches of a stream were more likely to be swept downstream than guppies located further upstream [48]. It therefore seems likely that the current strong positive rheotaxis in the Turure River reflects at least some (and perhaps substantial) contemporary evolution following their introduction more than 60 years ago.…”

Section: Objective 1 Rheotaxis In Two Asymmetrically Isolated Guppy mentioning

confidence: 89%

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Asymmetric Isolation and the Evolution of Behaviors Influencing Dispersal: Rheotaxis of Guppies above Waterfalls

Blondel

Klemet-N'Guessan

Scott

et al. 2020

Genes

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Populations that are asymmetrically isolated, such as above waterfalls, can sometimes export emigrants in a direction from which they do not receive immigrants, and thus provide an excellent opportunity to study the evolution of dispersal traits. We investigated the rheotaxis of guppies above barrier waterfalls in the Aripo and Turure rivers in Trinidad-the later having been introduced in 1957 from a below-waterfall population in another drainage. We predicted that, as a result of strong selection against downstream emigration, both of these above-waterfall populations should show strong positive rheotaxis. Matching these expectations, both populations expressed high levels of positive rheotaxis, possibly reflecting contemporary (rapid) evolution in the introduced Turure population. However, the two populations used different behaviors to achieve the same performance of strong positive rheotaxis, as has been predicted in the case of multiple potential evolutionary solutions to the same functional challenge (i.e., "many-to-one mapping"). By contrast, we did not find any difference in rheotactic behavior above versus below waterfalls on a small scale within either river, suggesting constraints on adaptive divergence on such scales.

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Section: Objective 1 Rheotaxis In Two Asymmetrically Isolated Guppy supporting

confidence: 79%

Section: Objective 1 Rheotaxis In Two Asymmetrically Isolated Guppy mentioning

confidence: 89%

Asymmetric Isolation and the Evolution of Behaviors Influencing Dispersal: Rheotaxis of Guppies above Waterfalls

Blondel

Klemet-N'Guessan

Scott

et al. 2020

Genes

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“…; Mohammed et al. ). Importantly, the differences documented here are specific to performance in flowing water; lake and stream fish did not differ in swimming performance in still water.…”

Section: Discussionmentioning

confidence: 99%

Differences in rheotactic responses contribute to divergent habitat use between parapatric lake and stream threespine stickleback

Jiang

Torrance²,

Peichel

et al. 2015

Evolution

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Migration among populations is widely thought to undermine adaptive divergence, assuming gene flow arises from random movement of individuals. If individuals instead differ in dispersal behavior, phenotype-dependent dispersal can reduce the effective rate of gene flow or even facilitate divergence. For example, parapatric populations of lake and stream stickleback tend to actively avoid dispersing into the adjoining habitat. However, the behavioral basis of this nonrandom dispersal was previously unknown. Here, we show that lake and stream stickleback exhibit divergent rheotactic responses (behavioral response to currents). During the breeding season, wild-caught inlet stream stickleback were better than lake fish at maintaining position in currents, faced upstream more, and spent more time in low-current areas. As a result, stream fish expended significantly less energy in currents than did lake fish. These divergent rheotactic responses likely contribute to divergent habitat use by lake and stream stickleback. Although rheotactic differences were absent in nonbreeding fish, divergent behavior of breeding-season fish may suffice for assortative mating by breeding location. The resulting reproductive isolation between lake and stream fish may explain the fine-scale evolutionary differentiation in parapatric stickleback populations.

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“…In short, guppy population structure is strongly determined by abiotic physical features that limit gene flow in the upstream direction. At the same time, gene flow in the downstream direction is limited by biotic factors, especially the general tendency of guppies to show positive rheotaxis, where they orient and swim upstream in a current (Blondel et al, 2020; Blondel et al, 2020; Mohammed et al, 2012). Yet this biotic resistance to the effects of water flow are sensitive to rare perturbations, such as stream capture events and human‐mediated introductions (Becher & Magurran, 2000; Blondel et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Resistance and resilience of genetic and phenotypic diversity to “black swan” flood events: A retrospective analysis with historical samples of guppies

et al. 2021

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Rare extreme “black swan” disturbances can impact ecosystems in many ways, such as destroying habitats, depleting resources, and causing high mortality. In rivers, for instance, exceptional floods that occur infrequently (e.g., so‐called “50‐year floods”) can strongly impact the abundance of fishes and other aquatic organisms. Beyond such ecological effects, these floods could also impact intraspecific diversity by elevating genetic drift or dispersal and by imposing strong selection, which could then influence the population's ability to recover from disturbance. And yet, natural systems might be resistant (show little change) or resilient (show rapid recovery) even to rare extreme events – perhaps as a result of selection due to past events. We considered these possibilities in two rivers where native guppies experienced two extreme floods – one in 2005 and another in 2016. For each river, we selected four sites and used archived “historical” samples to compare levels of genetic and phenotypic diversity before vs. after floods. Genetic diversity was represented by 33 neutral microsatellite markers, and phenotypic diversity was represented by body length and male melanic (black) colour. We found that genetic diversity and population structure was mostly “resistant” to even these extreme floods; whereas the larger impacts on phenotypic diversity were short‐lived, suggesting additional “resilience”. We discuss the determinants of these two outcomes for guppies facing floods, and then consider the general implications for the resistance and resilience of intraspecific variation to black swan disturbances.

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Upstream guppies (Poecilia reticulata, Peters, 1859) go against the flow

Cited by 5 publications

References 29 publications

Asymmetric Isolation and the Evolution of Behaviors Influencing Dispersal: Rheotaxis of Guppies above Waterfalls

Asymmetric Isolation and the Evolution of Behaviors Influencing Dispersal: Rheotaxis of Guppies above Waterfalls

Differences in rheotactic responses contribute to divergent habitat use between parapatric lake and stream threespine stickleback

Resistance and resilience of genetic and phenotypic diversity to “black swan” flood events: A retrospective analysis with historical samples of guppies

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