Mitochondrial Dna Suggests High Gene Flow in Ancient Murrelets

Pearce, Rebecca L.; Wood, Jesse J.; Artukhin, Yuri; Birt, Tim P.; Damus, Martin; Friesen, Vicki L.

doi:10.1650/0010-5422(2002)104[0084:mdshgf]2.0.co;2

Cited by 19 publications

(11 citation statements)

References 23 publications

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“…Although the population diminished during that period it did not diminish by the overall 95% expected if λ had remained at 0.75 for 10 years. Widespread colony interchange is consistent with the lack of local genetic structuring in this species (Pearce et al 2002) and with numerous observations of intercolony movements between the East Limestone colony and the nearby colony on Reef Island (Gaston and Adkins 1998). For the larger colony at nearby Reef Island Gaston (1990) estimated that ~ 80% of recruits came from other colonies.…”

Section: Discussionsupporting

confidence: 86%

“…Our estimates of declining apparent survival in the first year after capture, presumably caused by increasing transience, and our observations of reduced proportions of nonbreeders among adults trapped after 2000, supports this interpretation. Given the relatively small proportion of chicks recruiting to their natal colony, a decline in outside recruitment must be more important than local reproduction and philopatric recruitment in determining colony dynamics at East Limestone Island, and perhaps, given the high incidence of intercolony movement suggested by molecular data (Pearce et al 2002), in the species as a whole. Consequently, the recruitment decisions of birds reared elsewhere appear to be a critical factor in determining colony dynamics.…”

Section: Discussionmentioning

confidence: 99%

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Population Change in a Marine Bird Colony is Driven By Changes in Recruitment

Gaston¹,

Descamps²

2011

ACE

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ABSTRACT. The population dynamics of long-lived birds are thought to be very sensitive to changes in adult survival. However, where natal philopatry is low, recruitment from the larger metapopulation may have the strongest effect on population growth rate even in long-lived species. Here, we illustrate such a situation where changes in a seabird colony size appeared to be the consequence of changes in recruitment. We studied the population dynamics of a declining colony of Ancient Murrelets (Synthliboramphus antiquus) at East Limestone Island, British Columbia. During 1990-2010, Ancient Murrelet chicks were trapped at East Limestone Island while departing to sea, using a standard trapping method carried on throughout the departure period. Adult murrelets were trapped while departing from the colony during 1990-2003. Numbers of chicks trapped declined during 1990-1995, probably because of raccoon predation, increased slightly from 1995-2000 and subsequently declined again. Reproductive success was 30% lower during 2000-2003 than in earlier years, mainly because of an increase in desertions. The proportion of nonbreeders among adult birds trapped at night also declined over the study period. Mortality of adult birds, thought to be mainly prebreeders, from predators more than doubled over the same period. Apparent adult survival of breeders remained constant during 1991-2002 once the first year after banding was excluded, but the apparent survival rates in the first year after banding fell and the survival of birds banded as chicks to age three halved over the same period. A matrix model of population dynamics suggested that even during the early part of the study immigration from other breeding areas must have been substantial, supporting earlier observations that natal philopatry in this species is low. The general colony decline after 2000 probably was related to diminished recruitment, as evidenced by the lower proportion of nonbreeders in the trapped sample. Hence the trend is determined by the recruitment decisions of externally reared birds, rather than demographic factors operating on the local breeding population, an unusual situation for a colonial marine bird. Because of the contraction in the colony it may now be subject to a level of predation pressure from which recovery will be impossible without some form of intervention.RÉSUMÉ. On pense que la dynamique des populations d'oiseaux ayant une longévité accrue est sensible aux changements dans la survie des adultes. Toutefois, lorsque le degré de philopatrie est faible, le recrutement au sein de la métapopulation a peut-être davantage d'effet sur le taux de croissance de la population, même chez les espèces à longévité accrue. Dans le présent article, nous illustrons un cas où les changements d'effectifs d'une colonie d'oiseaux marins semblent être la conséquence des fluctuations du taux de recrutement, au moyen de l'étude de la dynamique de population d'une colonie de Guillemots à cou blanc (Synthliboramphus antiquus) en déclin à l'île Limestone Est en...

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Population Change in a Marine Bird Colony is Driven By Changes in Recruitment

Gaston¹,

Descamps²

2011

ACE

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“…Six nucleotide sequences of mitochondrial DNA of the Ancient Murrelet are registered in the DNA data bank. The partial DNA sequence of the cytochrome-b gene (Accession number AB070632, Pearce et al 2002) may contain assignment errors, and therefore cannot be compared with our data. For U37303 (Friesen et al 1996), which originally lacks the first 98 nucleotides, two nucleotide discrepancies were identified.…”

Section: Mitochondrial Genome Organizationmentioning

confidence: 99%

“…These nucleotide variations provide the population structure within a species (Wenink et al 1993). Population genetics in the control region of the Ancient Murrelet mitochondria has been described by Pearce et al (2002). The group analyzed 59 individuals taken from the coast of the Kamchatka Peninsula and East Limestone island, and identified 21 mtDNA haplotypes defined by 21 nucleotide variations and one 9 bp insertion in 1,153 bp mitochondrial DNA.…”

Section: Control Region Of the Ancient Murreletmentioning

confidence: 99%

Mitochondrial Genome Project on Endangered Birds in Japan: 1. Ancient Murrelet, Synthliboramphus antiquus

義弘¹,

亮三²,

哲³

2005

J Yamashina Inst Ornithol

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“…While the genetic structure has been investigated for selected B. tabaci populations [22,28,29], the majority of studies have relied upon comparisons of a partial fragment (658-780 bp) of the COI gene [21,26,[30][31][32][33]. Mitochondrial sequences evolve at a relatively high rate and have a low effective population size [34,35], which can be useful for understanding gene flow between populations [36][37][38] and for inferring past demographic events that have shaped the genetic diversity of the complex [39,40]. However, introgression of mitochondrial sequences into different nuclear phylogenetic backgrounds is possible [41], making it important to understand if lineages identified in mitochondrial data are also reflected across the nuclear genome.…”

Section: Introductionmentioning

confidence: 99%

Nuclear Orthologs Derived from Whole Genome Sequencing Indicate Cryptic Diversity in the Bemisia tabaci (Insecta: Aleyrodidae) Complex of Whiteflies

et al. 2019

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The Bemisia tabaci complex of whiteflies contains globally important pests thought to contain cryptic species corresponding to geographically structured phylogenetic clades. Although mostly morphologically indistinguishable, differences have been shown to exist among populations in behavior, plant virus vector capacity, ability to hybridize, and DNA sequence divergence. These differences allow for certain populations to become invasive and cause great economic damage in a monoculture setting. Although high mitochondrial DNA divergences have been reported between putative conspecifics of the B. tabaci species complex, there is limited data that exists across the whole genome for this group. Using data from 2184 orthologs obtained from whole genome sequencing (Illumina), a phylogenetic analysis using maximum likelihood and coalescent methodologies was completed on ten individuals of the B. tabaci complex. In addition, automatic barcode gap discovery methods were employed, and results suggest the existence of five species. Although the divergences of the mitochondrial cytochrome oxidase I gene are high among members of this complex, nuclear divergences are much lower in comparison. Single-copy orthologs from whole genome sequencing demonstrate divergent population structures among members of the B. tabaci complex and the sequences provide an important resource to aid in future genomic studies of the group.

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Mitochondrial Dna Suggests High Gene Flow in Ancient Murrelets

Cited by 19 publications

References 23 publications

Population Change in a Marine Bird Colony is Driven By Changes in Recruitment

Population Change in a Marine Bird Colony is Driven By Changes in Recruitment

Mitochondrial Genome Project on Endangered Birds in Japan: 1. Ancient Murrelet, Synthliboramphus antiquus

Nuclear Orthologs Derived from Whole Genome Sequencing Indicate Cryptic Diversity in the Bemisia tabaci (Insecta: Aleyrodidae) Complex of Whiteflies

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