Morphological expression in putative intergrades between two subspecies of Orange-crowned Warbler (<i>Oreothlypis celata</i>) on the Kenai Peninsula, Alaska

Gilbert, William M.; West, George C.

doi:10.1676/13-153.1

Cited by 3 publications

(2 citation statements)

References 31 publications

(34 reference statements)

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“…Using microsatellite data, Bull et al (2010) calculated significant gene flow from populations of O. c. lutescens into O. c. celata . Gilbert & West (2015) provided further evidence of gene flow between these two subspecies by identifying O. celata individuals from Alaska that were morphologically intermediate between O. c. celata and O. c. lutescens .…”

Section: Discussionmentioning

confidence: 94%

Molecular evidence that the Channel Islands populations of the orange-crowned warbler (Oreothlypis celata; Aves: Passeriformes: Parulidae) represent a distinct evolutionary lineage

Hanna

Cicero

Bowie

2019

PeerJ

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We used molecular data to assess the degree of genetic divergence across the breeding range of the orange-crowned warbler (Oreothlypis celata) in western North America with particular focus on characterizing the divergence between O. celata populations on the mainland of southern California and on the Channel Islands. We obtained sequences of the mitochondrial gene ND2 and genotypes at ten microsatellite data for 192 O. celata from populations spanning all four recognized subspecies. We recovered shallow, but significant, levels of divergence among O. celata populations across the species range. Our results suggest that island isolation, subspecies (delineation by morphology, ecological, and life-history characteristics), and isolation-by-distance, in that order, are the variables that best explain the geographic structure detected across the range of O. celata. Populations on the Channel Islands were genetically divergent from those on the mainland. We found evidence for greater gene flow from the Channel Islands population to mainland southern California than from the mainland to the islands. We discuss these data in the context of differentiation in phenotypic and ecological characters.

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Section: Discussionmentioning

confidence: 94%

Molecular evidence that the Channel Islands populations of the orange-crowned warbler (Oreothlypis celata; Aves: Passeriformes: Parulidae) represent a distinct evolutionary lineage

Hanna

Cicero

Bowie

2019

PeerJ

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“…We agree that S-C alaska assuredly encompasses a zone of contact between these forms. a series (uaM) of topotype specimens of lutescens {type locality "Fort Kenai, alaska" [aou 1957:483]} collected in Jun 1991 comprises only the intergrade phenotype discussed by Gilbert and West (2015). since its publication by Ridgway in 1872, however, the name lutescens has always been considered to represent the bright yellow-green birds nesting from Se alaska south, west of the cascade Range and sierra nevada, to southern california.…”

Section: Photo By James D Levison/usfwsmentioning

confidence: 99%

Birds of Middleton Island, a Unique Landfall for Migrants in the Gulf of Alaska

DeCicco¹,

Fish²,

Gibson³

et al. 2017

WBirds

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Migration studies at Middleton island, Gulf of alaska, over four decades documented the regular autumn occurrences of over 100 species of birds (35+ passerines and 65+ nonpasserines), most of them apparently departing across the Gulf of alaska for the Pacific coast to the east and south. With a focus on fall migration, we discuss here 261 species and 16 additional subspecies recorded at Middleton. We present much new information on the status of bird species and subspecies in the Gulf of alaska and highlight the regular and predictable use of a route of migration across the Gulf of alaska by large numbers of passerines, including species associated with the central Flyway.

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A Contact Zone between Coastal and Interior Fox Sparrows in South-Central Alaska

DeCicco¹

2021

WBirds

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I report observations, supported by museum voucher specimens, photographs, and audio recordings, from an area of breeding contact between two divergent groups of subspecies of the Fox Sparrow (Passerella iliaca) in upper Cook Inlet, south-central Alaska. In this area, covering ~50 km2, the interior iliaca group comes in contact with the Pacific coast unalaschcensis group in lowland mixed boreal forest. Phenotypically pure P. i. zaboria and P. i. sinuosa (subspecies representing the iliaca and unalaschcensis groups, respectively) occur in approximately equal abundances and outnumber intermediate phenotypes. These subspecies co-occur on a fine scale, males of zaboria and sinuosa often holding adjacent territories. I conclude that some form of pre- or post-zygotic isolating mechanism between these two subspecies-groups is hindering free interbreeding.

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Morphological expression in putative intergrades between two subspecies of Orange-crowned Warbler (Oreothlypis celata) on the Kenai Peninsula, Alaska

Cited by 3 publications

References 31 publications

Molecular evidence that the Channel Islands populations of the orange-crowned warbler (Oreothlypis celata; Aves: Passeriformes: Parulidae) represent a distinct evolutionary lineage

Molecular evidence that the Channel Islands populations of the orange-crowned warbler (Oreothlypis celata; Aves: Passeriformes: Parulidae) represent a distinct evolutionary lineage

Birds of Middleton Island, a Unique Landfall for Migrants in the Gulf of Alaska

A Contact Zone between Coastal and Interior Fox Sparrows in South-Central Alaska

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