Biogeographical barriers to dispersal and rare gene flow shape population genetic structure in red‐footed boobies (<i>Sula sula</i>)

Morris‐Pocock, James A.; Anderson, David J.; Friesen, Vicki L.

doi:10.1111/jbi.12780

Cited by 9 publications

(8 citation statements)

References 63 publications

(98 reference statements)

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“…Lastly, the size of both adults and juveniles varied according to the site, with larger individuals found on Genovesa than on Europa or Surprise. Redfooted Boobies exhibit a strong population genetic isolation, with a particularly high level of differentiation between Genovesa and other colonies (Morris-Pocock et al 2016). Even though the regional variations of the measurements of the Red-footed Booby are not extreme, it has previously been proposed that the relatively large breeding form in the Galapagos may be an adaptation to an impoverished environment, enabling the female to produce large eggs (Nelson 1978).…”

Section: Discussionmentioning

confidence: 99%

Inter‐population variation in the behaviour of adult and juvenile Red‐footed Boobies Sula sula

Mendez

Prudor

Weimerskirch

2019

Ibis

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Early life is a critical phase of the life cycle of animals and is attracting increased attention because little information is available on the behaviour of young individuals during this period. Behaviour during early life is probably influenced by the environmental conditions encountered by young animals, but data on intraspecific variation between breeding sites during this crucial period of life are limited. Here we study variability in the foraging behaviour of juveniles and adults in three colonies of a pantropical seabird, the Red‐footed Booby Sula sula. Both adults and juveniles were measured and fitted with GPS loggers in three remote islands: Genovesa (Galapagos, Eastern Pacific Ocean), Europa (Western Indian Ocean) and Surprise (New Caledonia, Western Pacific Ocean). Foraging behaviour was compared between age‐classes, sex and colonies by examining trip characteristics, different behaviours at sea, potential associations between individuals and morphological characteristics. Compared with adults, juveniles conducted shorter trips that were restricted to around the colony, especially on Genovesa (max. range: 203.4 ± 125.1 km and 3.6 ± 3.1 km, respectively). Juveniles appeared more constrained by poor flight skills and experience rather than by their morphology. Adults travelled 45% of the time during at‐sea trips, whereas juveniles spent a a lower proportion of time travelling but foraged more often using an ‘area‐restricted search’ behaviour, potentially training to catch prey. Associations between juveniles were commonly detected in the three colonies and occurred mostly during foraging, suggesting that social learning is an important strategy. Variability of morphometric measurements in both adults and juveniles was high between sites, with larger birds found on Genovesa. These results suggest that adaptations to local environmental conditions are already visible in their early life. Future studies should continue to investigate the behavioural flexibility of juvenile birds to better understand the effect of local environmental conditions during this critical stage of life.

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Section: Discussionmentioning

confidence: 99%

Inter‐population variation in the behaviour of adult and juvenile Red‐footed Boobies Sula sula

Mendez

Prudor

Weimerskirch

2019

Ibis

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“…A range of K values was planned from K = 1 to 10. Each number of K clusters was assessed in 5 independent runs, with a burn-in of 100,000 MCMC steps, followed by an additional 100,000 MCMC steps (Kunde et al, 2020;Morris-Pocock et al, 2016). Then the resulted files were uploaded to the "STRUCTURE HARVESTER" website (http://taylorO.biology.ucla.edu/struct harvest/) (Earl and VonHoldt, 2012).…”

Section: Gene Exchange/flows and Migrationmentioning

confidence: 99%

“…The effective migration rate is the migration rate (M) and was calculated using BayesAss 3.0 software (Wilson and Rannala, 2003). When running, the parameters were set at 0.50 allele frequency, 0.50 inbred line number, 0.50 migration rate, 100 seed, program 10000000 times, 1000000 number of iterations, 1000 sampling interval to ensure the reliability and accuracy of M value (Morris-Pocock et al, 2016).…”

Section: Gene Exchange/flows and Migrationmentioning

confidence: 99%

Landscape characteristics determine the gene exchange pattern of Opisthopappus species in the Taihang Mountains

Zhang¹,

Ye²,

Liu³

et al. 2022

Preprint

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Landscape features are effective geographical barriers resulting inpopulation differentiation of plant species. Taihang Mountains in China possess complexly geographical topology and specific landscape characteristics. Two closely related syntopic Opisthopappus species, mainly distribute in different areas of Taihang Mountains, respectively. How the landscape of Taihang Mountains affects the gene exchange between these two species still unclear. Combined SNP data from restriction-site associated DNA sequencing (RAD-seq) and recently developed landscape genetic methods (EEMS, Samβada, LFMM), we conducted a landscape genetic analysis of these two species. It found that the diversity of O. longilobus was higher than that of O. taihangensis, the gene flow was mostly from north to south along Taihang Mountains. However, a general north–south gene exchange barrier between O. longilobus and O. taihangensis was detected. Among the landscape factors of Taihang Mountains, eight was found to be the important ones, including average precipitation in August, October, and November, solar radiation in August, soil PH, built-up land, rain-fed cultivated land, and workability. And these eight factors were closely related to the occurred barriers, indicating that climatic conditions and human activities rather than geographical environment resulted in these barriers. Twenty-nine selected SNPs were identified to be significant correlated with the eight factors, especially average precipitation in November. Thus, the average precipitation in November could be regarded as an ecological indicator for O. longilobus and O. taihangensis. The results revealed the effect of landscape features on two species and the adaption on the landscape environment of Taihang Mountains during the long-term evolution.

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“…Typical of nuclear intron loci, extant Cook's Petrels exhibit less phylogeographic structure for PAX and β-fibint7 than for the mitochondrial CO1 locus Barrowclough 2008, Edwards andBensch 2009). Similarly, it is typical for some nuclear introns, particularly β-fibint7 in birds, to exhibit more phylogeographic structure than others due to stochastic lineage sorting (Gangloff et al 2012b, Morris-Pocock et al 2016. Detecting relatively weak or no phylogeographic structure using nuclear markers may indicate male-mediated gene flow (e.g.…”

Section: Taxonomic Status Of Extant Cook's Petrel Populationsmentioning

confidence: 99%

Comprehensive evidence for subspecies designations in Cook’s Petrel Pterodroma cookii with implications for conservation management

Rayner¹,

Loenen

Shepherd

et al. 2020

Bird Conservation International

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Summary Cook’s Petrel Pterodroma cookii is an endemic New Zealand seabird that has experienced a large range decline since the arrival of humans and now only breeds on two offshore islands (Te Hauturu-o-Toi/Little Barrier Island and Whenua Hou/Codfish Island) at the extreme ends of its former distribution. Morphological, behavioural, and mitochondrial cytochrome oxidase 1 (CO1) sequence data led a previous study to recognise the two extant populations as distinct conservation management units. Here, we further examine the genetic relationship between the extant populations using two nuclear introns (β-fibint7 and PAX). Using one mitochondrial locus (CO1), we also investigate the past distribution of a single nucleotide polymorphism (SNP) that differentiates the modern populations using bone and museum skins sourced from within its former range across New Zealand’s North and South Islands. We found significant population genetic structure between the two extant Cook’s Petrel populations for one of the two nuclear introns (β-fibint7). The mitochondrial DNA CO1 analysis indicated that the SNP variant found in the Codfish Island population was formerly widely distributed across both the North and South Islands, whereas the Little Barrier Island variant was detected only in North Island samples. We argue that these combined data support the recognition of the extant populations as different subspecies. Previous names for these taxa exist, thus Cook’s Petrel from Little Barrier Island becomes Pterodroma cookii cookii and Cook’s Petrel from Codfish Island becomes P. c. orientalis. Furthermore, we suggest that both genetic and non-genetic data should be taken into consideration when planning future mainland translocations. Namely, any translocations on the South Island should be sourced from Codfish Island and future translocations on the North Island should continue to be sourced from Little Barrier Island only.

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Biogeographical barriers to dispersal and rare gene flow shape population genetic structure in red‐footed boobies (Sula sula)

Cited by 9 publications

References 63 publications

Inter‐population variation in the behaviour of adult and juvenile Red‐footed Boobies Sula sula

Inter‐population variation in the behaviour of adult and juvenile Red‐footed Boobies Sula sula

Landscape characteristics determine the gene exchange pattern of Opisthopappus species in the Taihang Mountains

Comprehensive evidence for subspecies designations in Cook’s Petrel Pterodroma cookii with implications for conservation management

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