Color-Pattern Variation in Lake Erie Water Snakes: The Role of Gene Flow

King, Richard B.; Lawson, Robin

doi:10.2307/2410411

Cited by 97 publications

(120 citation statements)

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“…Many natural color polymorphisms, when closely examined, can be attributed to nonselective processes, such as regional selection combined with migration and dispersal (Dearn 1984, King & Lawson 1995, Reillo & Wise 1988, or genetic drift and local population bottlenecks (Brakefield 1990). Even the world's most intensively studied polymorphism, that of the Cepaea land snails, is sustained in part by migration, drift, and founder effects (Bellido et al 2002, Cook 1998.…”

Section: Apostatic Selection and Balanced Polymorphismmentioning

confidence: 99%

The Evolution of Color Polymorphism: Crypticity, Searching Images, and Apostatic Selection

Bond

2007

Annu. Rev. Ecol. Evol. Syst.

256

261

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The development and maintenance of color polymorphism in cryptic prey species is a source of enduring fascination, in part because it appears to result from selective processes operating across multiple levels of analysis, ranging from cognitive psychology to population ecology. Since the 1960s, prey species with diverse phenotypes have been viewed as the evolved reflection of the perceptual and cognitive characteristics of their predators. Because it is harder to search simultaneously for two or more cryptic prey types than to search for only one, visual predators should tend to focus on the most abundant forms and effectively overlook the others. The result should be frequency-dependent, apostatic selection, which will tend to stabilize the prey polymorphism. Validating this elegant hypothesis has been difficult, and many details have been established only relatively recently. This review clarifies the argument for a perceptual selective mechanism and examines the relevant experimental evidence.

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Section: Apostatic Selection and Balanced Polymorphismmentioning

confidence: 99%

The Evolution of Color Polymorphism: Crypticity, Searching Images, and Apostatic Selection

Bond

2007

Annu. Rev. Ecol. Evol. Syst.

256

261

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“…However, Electronic supplementary material The online version of this article (doi:10.1007/s10750-016-2939-8) contains supplementary material, which is available to authorized users. such pathways rarely proceed in a linear fashion by divergence alone, as repeated intermezzos of gene flow perturbate gene pools and set the stage for selection, drift, and speciation (King & Lawson, 1995;Rossiter, 1995;Pinho & Hey, 2010;. On the long run, secondary admixis can either render population distinctness or produce novel and distinct hybrid entities, which can evolve to novel species (Seehausen, 2004;Nolte & Tautz, 2010).…”

Section: Introductionmentioning

confidence: 99%

A separate lowstand lake at the northern edge of Lake Tanganyika? Evidence from phylogeographic patterns in the cichlid genus Tropheus

et al. 2016

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In Lake Tanganyika, lake level fluctuations were shown to have had a major impact on the evolution of littoral species. Many species are subdivided into arrays of populations, geographical races and sister species, each colonizing a particular section of the shore. Their often limited dispersal abilities promoted geographic isolation and, on the long run, allopatric speciation. With more than 120 distinct populations, the genus Tropheus represents the most spectacular and best-studied example of this phenomenon. The present study aims at the fine-scale reconstruction of the spread of two mitochondrial Tropheus-lineages in the very north of the lake, where two species, T. sp. 'black' and T. brichardi, occur. Using mtDNA sequences and AFLP-data, we analyzed samples from 21 localities and found a highly complex conglomerate of introgressed populations formed by the repeated contact of two lineages. Our data suggest repeated cross-lake dispersal of T. sp. 'black' haplotypes along the ridge between the West and East Ubwari Fault, supporting an additional persisting lowstand-lake in the Bujumbura subbasin at the very north of the lake and highlighting once more the impact of lake level fluctuations on the genetic structure and evolution of stenotopic rockdwelling cichlid species.

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“…Individual movement ultimately plays a critical role in determining local population density, genetic structure (King & Lawson 1995) and community composition (Ellner & Fussmann 2003), and in rescuing populations from extinction (Hill et al 2002). In this study, we examined how habitat structure and environmental variability influence the fine-scale movement patterns of the blue rockfish Sebastes mystinus.…”

Section: Introductionmentioning

confidence: 99%

Limited movement in blue rockfish Sebastes mystinus: internal structure of home range

Jorgensen¹,

Kaplan²,

Klimley³

et al. 2006

Mar. Ecol. Prog. Ser.

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Home range has been estimated for a limited number of marine fishes; however, the use of space and timing of activities within the home range has rarely been studied. In addition, understanding movement patterns of exploited fish species has been identified as a crucial science gap, impeding informed marine reserve design. We used a radio-acoustic positioning telemetry (VRAP) system to monitor detailed movements of 10 blue rockfish Sebastes mystinus around shallow rock pinnacles and stands of bull kelp Nereocystis leutkeana in central California in September 2002. The mean home range was 8783 m 2 ± 1137 SE; however, activity was highly concentrated in 1 to 3 core areas within each home range. Mean core areas measured 1350 m 2 ± 286 SE, but accounted for ~83% of activity. All core areas were centered over rock pinnacles where rockfish were highly aggregated. Individuals exhibited high site fidelity and made only brief radial excursions away from these centers or moved directly from one pinnacle to the next along defined corridors. Patterns of diel activity and nocturnal sheltering corresponded closely with nautical twilight. Cores overlapped, but estimated locations of nocturnal shelters differed significantly among individuals. Movement patterns were correlated with wind velocity, upwelling index, water temperature and habitat structure. KEY WORDS: Sebastes mystinus · Rockfish · Movement · Home range · Tagging · Core areas Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 327: [157][158][159][160][161][162][163][164][165][166][167][168][169][170] 2006 among terrestrial animals has been attributed to patterns of refuging (e.g. Hamilton & Watt 1970) and foraging (Samuel et al. 1985, Kenward et al. 2001. Patterns of core area use in marine fishes are also likely to have important implications for understanding the ecological determinants of space use; however, very little is known other than that core areas are increasingly detected as tracking technologies improve. Holland et al. (1993) identified core areas within which juvenile hammerhead sharks Sphyrna lewini restricted their diurnal movements to a small portion of their total home range (a turbid portion of an island bay), suggesting an anti-predation function. In the oceanic environment, adult S. lewini aggregate at oceanic seamounts during the day, and from these refuging cores make nocturnal foraging movements into a much broader pelagic environment (Klimley & Nelson 1984). Parsons et al. (2003) identified core areas for 4 individual snapper Pargus auratus that were relatively stable over a period of 4 lunar cycles, while a fifth individual gradually changed the number and location of occupied cores. The location and timing of core area use was not, however, attributed to particular activities or habitat resources. While the quality of habitat is likely to influence the extent (Mathews 1990, Lowe et al. 2003 and the shape (e.g. Holland et al. 1996, Topping et al. 2005) of the home range, the extent ...

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Color-Pattern Variation in Lake Erie Water Snakes: The Role of Gene Flow

Cited by 97 publications

References 0 publications

The Evolution of Color Polymorphism: Crypticity, Searching Images, and Apostatic Selection

The Evolution of Color Polymorphism: Crypticity, Searching Images, and Apostatic Selection

A separate lowstand lake at the northern edge of Lake Tanganyika? Evidence from phylogeographic patterns in the cichlid genus Tropheus

Limited movement in blue rockfish Sebastes mystinus: internal structure of home range

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