LIFE HISTORY STUDIES OF THE LESSER SNOW GOOSE (<i>ANSER CAERULESCENS CAERULESCENS</i>). III. THE SELECTIVE VALUE OF PLUMAGE POLYMORPHISM: NET FECUNDITY

Cooke, Fred; Findlay, C. Scott; Rockwell, Robert F.; Smith, Judith A.

doi:10.1111/j.1558-5646.1985.tb04089.x

Cited by 33 publications

(22 citation statements)

References 25 publications

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“…Wunderle, 1981), from introgression following secondary contact (e.g. Cooke et al, 1985) or simply from isolation with increasing geographic distance or other environmental variables (e.g. Brazeau et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Determining the origin of invasions and demonstrating a lack of enemy release from microsporidian pathogens in common wasps (Vespula vulgaris)

Lester

Gruber

Brenton-Rule

et al. 2014

Diversity and Distributions

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Aim Understanding the role of enemy release in biological invasions requires an assessment of the invader's home range, the number of invasion events and enemy prevalence. The common wasp (Vespula vulgaris) is a widespread invader. We sought to determine the Eurasian origin of this wasp and examined world‐wide populations for microsporidian pathogen infections to investigate enemy release. Location Argentina, Eurasia, New Zealand. Methods A haplotype network and phylogenetic tree were constructed from combined wasp COI and cytb mitochondrial markers. A morphometric study using canonical discriminant analysis was conducted on wing venation patterns. Microsporidian pathogens prevalence was also examined using small subunit rRNA microsporidia‐specific primers. Results Our spatially structured haplotype network from the native range suggested a longitudinal cline of wasp haplotypes along an east to west gradient. Six haplotypes were detected from New Zealand, and two from Argentina. The populations from the introduced range were genetically similar to the western European, United Kingdom and Ireland. The morphometric analysis showed significant morphological variation between countries and supported the Western European origin for New Zealand populations, although not for Argentine samples. Microsporidian infection rates were highest in New Zealand samples (54%), but no significant differences in infection rates were observed between the invaded and native range. Nosema species included matches to N. apis (a pathogen from honey bees) and N. bombi (from bumble bees). Main conclusions Multiple introductions of the common wasp have occurred in the invaded range. A high microsporidian infection rate within the native range, combined with multiple introductions and a reservoir of pathogens in other social insects such as bees, likely contributes to the high microsporidian infection rates in the invaded range. Enemy release is likely to be more frequent when pathogens are rare in the home range, or are host specific and rare in reservoir populations of the introduced range.

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Section: Discussionmentioning

confidence: 99%

Determining the origin of invasions and demonstrating a lack of enemy release from microsporidian pathogens in common wasps (Vespula vulgaris)

Lester

Gruber

Brenton-Rule

et al. 2014

Diversity and Distributions

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“…This allows tagged goslings to be aged precisely (age = days since hatching) when captured during annual banding drives (late Julyearly August), and to be ascribed to specific nests and parents. General field methods are described in Finney and Cooke (1978) and Cooke et al (1985). SAS (SAS Institute 1985) was used for all statistical analyses.…”

Section: Introducrionmentioning

confidence: 99%

Body Size Variation in Lesser Snow Geese: Environmental Plasticity in Gosling Growth Rates

Cooch¹,

Lank²,

Dzubin³

et al. 1991

Ecology

160

110

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We examined the influence of timing of reproduction and brood size on growth rates of goslings of nidifugous Lesser Snow Geese (Anser caerulescens) using data collected at La Perouse Bay, Manitoba from 1978 to the present, Gosling growth rates declined significantly during the season, and the declines were independent of the parental genotype. Goslings from larger broods grew significantly faster, but there was no significant annual variation in the seasonal growth rate patterns with either hatch date or brood size. The hatch date and brood size effects could not be accounted for by systematic differences in either egg size or body size of the female parent. Goslings that grew more slowly due to the effects of hatch date or brood size were significantly smaller as adults. Because gosling growth rates influence final adult size, they may have a significant effect on various life history traits in this species.

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“…Data were collected from 1969-1982 as part of a larger investigation of the breeding biology of Lesser Snow Geese at La Perouse Bay, near Churchill, Manitoba. A description ofthe study site and the general method of data collection are given in Cooke et al (1985).…”

Section: Methodsmentioning

confidence: 99%

“…The fecundity components are measured as a series of variables reflecting the period from egg laying to gosling fledging. The variables are precisely defined in Cooke et al (1985). Briefly they are: total clutch laid (TCL); clutch size at hatch (CSH); goslings leaving nest (GLN); brood size at fledging (BSF); egg survival (CSH/TCL); hatching success (GLN/CSH); and fledging success (BSF/GLN).…”

Section: Methodsmentioning

confidence: 99%

“…We consider here the pattern of assortment at the La Perouse Bay colony and examine the hypothesis that the existence and persistence of positive assortment is related to enhanced reproductive fitness ofindividuals who acquire a mate phenotypically similar to themselves. As described in Cooke et al (1985), we partition the life cycle into a series of stages and assess potential differences be-tween the pure and mixed pairs at each stage. These stages encompass fitness components traditionally related to both fecundity selection and viability selection.…”

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confidence: 99%

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LIFE HISTORY STUDIES OF THE LESSER SNOW GOOSE (ANSER CAERULESCENS CAERULESCENS). VI. PLUMAGE POLYMORPHISM, ASSORTATIVE MATING AND FITNESS

Findlay

Rockwell

Smith³

et al. 1985

Evolution

Self Cite

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Abstract.-We investigated the hypothesis that positive assortative mating for plumage coloration observed in populations of the dichromatic Lesser Snow Goose (Anser caerulescens caerulescens) evolved and persists due to selective advantages accruing to individuals choosing mates phenotypically similar to themselves. We examined potential differences between pure (white x white, blue x blue) and mixed (white x blue, blue x white) pairs for an array offitness components related to both fecundity and viability. While no differences were detected for most components, mixed pairs consistently enjoyed enhanced nesting success relative to their pure counterparts. In addition, pre-reproductive viability and female offspring recruitment were significantly greater for mixed pairs for some of the cohorts examined. Not only have we failed to find enhanced reproductive success associated with positive assortment, we have provided evidence that there is some advantage associated with negative assortment.In light of our findings, we suggest: 1) that positive assortment results from the use of familial color as one element in species recognition; 2) that the enhanced fitness of mixed pairs, particularly with respect to nesting success, results from complementation of parental behavior; and 3) that while negative assortment will not likely become the rule in this population, the selective advantage of mixed pairs is a potential determinant of pair type frequencies in the La Perouse Bay population.

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LIFE HISTORY STUDIES OF THE LESSER SNOW GOOSE (ANSER CAERULESCENS CAERULESCENS). III. THE SELECTIVE VALUE OF PLUMAGE POLYMORPHISM: NET FECUNDITY

Cited by 33 publications

References 25 publications

Determining the origin of invasions and demonstrating a lack of enemy release from microsporidian pathogens in common wasps (Vespula vulgaris)

Determining the origin of invasions and demonstrating a lack of enemy release from microsporidian pathogens in common wasps (Vespula vulgaris)

Body Size Variation in Lesser Snow Geese: Environmental Plasticity in Gosling Growth Rates

LIFE HISTORY STUDIES OF THE LESSER SNOW GOOSE (ANSER CAERULESCENS CAERULESCENS). VI. PLUMAGE POLYMORPHISM, ASSORTATIVE MATING AND FITNESS

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