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Independent evolution of intermediate bill widths in a seabird clade. Mol Genet Genomics 2021; 297:183-198. [PMID: 34921614 PMCID: PMC8803701 DOI: 10.1007/s00438-021-01845-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/28/2021] [Indexed: 10/29/2022]
Abstract
Interspecific introgression can occur between species that evolve rapidly within an adaptive radiation. Pachyptila petrels differ in bill size and are characterised by incomplete reproductive isolation, leading to interspecific gene flow. Salvin's prion (Pachyptila salvini), whose bill width is intermediate between broad-billed (P. vittata) and Antarctic (P. desolata) prions, evolved through homoploid hybrid speciation. MacGillivray's prion (P. macgillivrayi), known from a single population on St Paul (Indian Ocean), has a bill width intermediate between salvini and vittata and could also be the product of interspecies introgression or hybrid speciation. Recently, another prion population phenotypically similar to macgillivrayi was discovered on Gough (Atlantic Ocean), where it breeds 3 months later than vittata. The similarity in bill width between the medium-billed birds on Gough and macgillivrayi suggest that they could be closely related. In this study, we used genetic and morphological data to infer the phylogenetic position and evolutionary history of P. macgillivrayi and the Gough medium-billed prion relative other Pachyptila taxa, to determine whether species with medium bill widths evolved through common ancestry or convergence. We found that Gough medium-billed prions belong to the same evolutionary lineage as macgillivrayi, representing a new population of MacGillivray's prion that originated through a colonisation event from St Paul. We show that macgillivrayi's medium bill width evolved through divergence (genetic drift) and independently from that of salvini, which evolved through hybridisation (gene flow). This represents the independent convergence towards a similarly medium-billed phenotype. The newly discovered MacGillivray's prion population on Gough is of utmost conservation relevance, as the relict macgillivrayi population in the Indian Ocean is very small.
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Masello JF, Quillfeldt P, Sandoval-Castellanos E, Alderman R, Calderón L, Cherel Y, Cole TL, Cuthbert RJ, Marin M, Massaro M, Navarro J, Phillips RA, Ryan PG, Shepherd LD, Suazo CG, Weimerskirch H, Moodley Y. Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation. Mol Biol Evol 2020; 36:1671-1685. [PMID: 31028398 PMCID: PMC6657733 DOI: 10.1093/molbev/msz090] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Speciation through homoploid hybridization (HHS) is considered extremely rare in animals. This is mainly because the establishment of reproductive isolation as a product of hybridization is uncommon. Additionally, many traits are underpinned by polygeny and/or incomplete dominance, where the hybrid phenotype is an additive blend of parental characteristics. Phenotypically intermediate hybrids are usually at a fitness disadvantage compared with parental species and tend to vanish through backcrossing with parental population(s). It is therefore unknown whether the additive nature of hybrid traits in itself could lead successfully to HHS. Using a multi-marker genetic data set and a meta-analysis of diet and morphology, we investigated a potential case of HHS in the prions (Pachyptila spp.), seabirds distinguished by their bills, prey choice, and timing of breeding. Using approximate Bayesian computation, we show that the medium-billed Salvin's prion (Pachyptila salvini) could be a hybrid between the narrow-billed Antarctic prion (Pachyptila desolata) and broad-billed prion (Pachyptila vittata). Remarkably, P. salvini's intermediate bill width has given it a feeding advantage with respect to the other Pachyptila species, allowing it to consume a broader range of prey, potentially increasing its fitness. Available metadata showed that P. salvini is also intermediate in breeding phenology and, with no overlap in breeding times, it is effectively reproductively isolated from either parental species through allochrony. These results provide evidence for a case of HHS in nature, and show for the first time that additivity of divergent parental traits alone can lead directly to increased hybrid fitness and reproductive isolation.
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Affiliation(s)
- Juan F Masello
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Germany
| | - Petra Quillfeldt
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Germany
| | | | - Rachael Alderman
- Department of Primary Industries, Parks, Water and Environment, Hobart, TAS, Australia
| | - Luciano Calderón
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Germany
| | - Yves Cherel
- Centre d'Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, Villiers-en-Bois, France
| | - Theresa L Cole
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Germany.,Manaaki Whenua Landcare Research, Canterbury, New Zealand
| | - Richard J Cuthbert
- Royal Society for the Protection of Birds (RSPB), The Lodge, Sandy, Bedfordshire, United Kingdom
| | - Manuel Marin
- Section of Ornithology, Natural History Museum of Los Angeles County, Los Angeles, CA.,Feather Link Inc., Cincinnati, OH
| | - Melanie Massaro
- Institute for Land, Water and Society, School of Environmental Sciences, Charles Sturt University, Albury, NSW, Australia
| | - Joan Navarro
- Institut de Ciències del Mar CSIC, Barcelona, Spain
| | - Richard A Phillips
- British Antarctic Survey, Natural Environment Research Council, High Cross, Cambridge, United Kingdom
| | - Peter G Ryan
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch, Republic of South Africa
| | - Lara D Shepherd
- Museum of New Zealand Te Papa Tongarewa, Wellington, New Zealand
| | - Cristián G Suazo
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Germany
| | - Henri Weimerskirch
- Centre d'Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, Villiers-en-Bois, France
| | - Yoshan Moodley
- Department of Zoology, University of Venda, Private Bag X5050, Thohoyandou 0950, Republic of South Africa
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3
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Endemic shearwaters are increasing in the Mediterranean in relation to factors that are closely related to human activities. Glob Ecol Conserv 2019. [DOI: 10.1016/j.gecco.2019.e00740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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4
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Eva SN, Yamazaki Y. Population Structure, Admixture, and Migration Patterns of Japanese Sika Deer ( Cervus nippon) Inhabiting Toyama Prefecture in Japan. Zoolog Sci 2019; 36:128-135. [PMID: 31120647 DOI: 10.2108/zs180114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/25/2018] [Indexed: 11/17/2022]
Abstract
Rapid expansion of sika deer, in both number and distribution, in the Japanese Archipelago has resulted in serious ecological disturbance. In the present study, the population structure and migration patterns of sika deer (Cervus nippon) among Toyama and adjacent Prefectures were investigated using 11 polymorphic microsatellite loci. Deviation from Hardy-Weinberg equilibrium was detected in both total and individual regional sika deer samples from Toyama Prefecture. Results of pairwise FST results, factorial correspondence analysis, and STRUCTURE analysis indicated that sika deer in Toyama are not genetically distinct from those in adjacent Prefectures. Bayesian STRUCTURE results suggested the existence of two distinct clusters. However, multiple lines of genetic structure and high admixture were detected across the populations located in the central region of Toyama Prefecture. Both contemporary and historical migration analyses showed that dispersal into Toyama Prefecture from neighboring prefectures was high, especially migration from the prefecture on the east into Toyama Prefecture, and bidirectional dispersion between Toyama Prefecture and the prefecture to the south. Knowledge of such genetic structures and population dynamics is required for appropriate management and conservation of sika deer populations in the Japanese Archipelago.
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Affiliation(s)
- Saifun Nahaer Eva
- Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan
| | - Yuji Yamazaki
- Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan,
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Ramos R. Crossing the Pillars of Hercules: Understanding transoceanic migrations of seabirds throughout their breeding range. Ecol Evol 2019; 9:4760-4771. [PMID: 31031942 PMCID: PMC6476834 DOI: 10.1002/ece3.5079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 02/25/2019] [Accepted: 02/28/2019] [Indexed: 11/09/2022] Open
Abstract
Variability in long-distance migration strategies is still poorly understood due to the fact that individuals are often tracked from a single colony/population. Transoceanic migrations of Scopoli's shearwaters (Calonectris diomedea) across the Strait of Gibraltar (SoG) have been tracked from several breeding colonies isolatedly, and factors related to the variability in phenological schedules among different populations remain, therefore, not well-understood. Using light-level geolocator data, I examined the autumn (postbreeding) and spring (prebreeding) migratory passage dates through SoG of four populations of Scopoli's shearwater spread along the longitudinal breeding range of the species. Additionally, I also estimated the at-sea activity patterns (from immersion data) during both migratory passages, as well as the body size (from morphometric data) of the individuals of these populations. On average, Scopoli's shearwaters leave the Mediterranean (cross SoG) on 31 October ± 1.8 days on their autumn migrations and return on 03 March ± 1.6 days on their spring migrations. At the population level, there was a clear gradient in the timing of crossing SoG: birds from the westernmost populations (Murcia, SE Spain) were the first ones in leaving the Mediterranean while easternmost breeders (Paximada, Crete) were the last ones. In spring, only birds from the largest breeding population (Zembra, Tunisia) seemed to advance their return and crossed SoG significantly earlier than birds tracked at the remaining populations. In both passages, shearwaters from central and eastern populations spent more time flying than their conspecifics from the western Mediterranean. Scopoli's shearwater populations display a differential phenology and behavior in their migratory passages through SoG. The longitudinal gradient in body size already reported for the species could be an evolutionary response to an obvious trade-off between sharing common wintering grounds in the Atlantic Ocean and the temporal constraints of restoring physiological condition in those grounds. OPEN RESEARCH BADGES This article has earned an Open Data Badge for making publicly available the digitally-shareable data necessary to reproduce the reported results. The data is available at https://hdl.handle.net/2445/128784.
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Affiliation(s)
- Raül Ramos
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio)Universitat de BarcelonaBarcelonaSpain
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6
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Genovart M, Bécares J, Igual JM, Martínez-Abraín A, Escandell R, Sánchez A, Rodríguez B, Arcos JM, Oro D. Differential adult survival at close seabird colonies: The importance of spatial foraging segregation and bycatch risk during the breeding season. GLOBAL CHANGE BIOLOGY 2018; 24:1279-1290. [PMID: 29178374 DOI: 10.1111/gcb.13997] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/20/2017] [Accepted: 11/07/2017] [Indexed: 05/10/2023]
Abstract
Marine megafauna, including seabirds, are critically affected by fisheries bycatch. However, bycatch risk may differ on temporal and spatial scales due to the uneven distribution and effort of fleets operating different fishing gear, and to focal species distribution and foraging behavior. Scopoli's shearwater Calonectris diomedea is a long-lived seabird that experiences high bycatch rates in longline fisheries and strong population-level impacts due to this type of anthropogenic mortality. Analyzing a long-term dataset on individual monitoring, we compared adult survival (by means of multi-event capture-recapture models) among three close predator-free Mediterranean colonies of the species. Unexpectedly for a long-lived organism, adult survival varied among colonies. We explored potential causes of this differential survival by (1) measuring egg volume as a proxy of food availability and parental condition; (2) building a specific longline bycatch risk map for the species; and (3) assessing the distribution patterns of breeding birds from the three study colonies via GPS tracking. Egg volume was very similar between colonies over time, suggesting that environmental variability related to habitat foraging suitability was not the main cause of differential survival. On the other hand, differences in foraging movements among individuals from the three colonies expose them to differential mortality risk, which likely influenced the observed differences in adult survival. The overlap of information obtained by the generation of specific bycatch risk maps, the quantification of population demographic parameters, and the foraging spatial analysis should inform managers about differential sensitivity to the anthropogenic impact at mesoscale level and guide decisions depending on the spatial configuration of local populations. The approach would apply and should be considered in any species where foraging distribution is colony-specific and mortality risk varies spatially.
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Affiliation(s)
- Meritxell Genovart
- IMEDEA (CSIC-UIB), Esporles, Mallorca, Spain
- CEAB (CSIC), Accés Cala Sant Francesc, Blanes,Girona, Catalonia, Spain
| | - Juan Bécares
- SEO/BirdLife - Marine Programme, Delegació de Catalunya, Barcelona, Spain
| | | | - Alejandro Martínez-Abraín
- Grupo de Investigación en Biología Evolutiva, Departamento de Bioloxía, Universidade da Coruña, A Coruña, Spain
| | - Raul Escandell
- SOM (Societat Ornitològica de Menorca), Es Castell, Menorca, Spain
| | - Antonio Sánchez
- Oficina Técnica Devesa-Albufera (Ayuntamiento de Valencia), Valencia, Spain
| | - Beneharo Rodríguez
- SEO/BirdLife - Marine Programme, Delegació de Catalunya, Barcelona, Spain
- Canary Islands' Ornithology and Natural History Group (GOHNIC), Tenerife, Canary Islands, Spain
| | - José M Arcos
- SEO/BirdLife - Marine Programme, Delegació de Catalunya, Barcelona, Spain
| | - Daniel Oro
- IMEDEA (CSIC-UIB), Esporles, Mallorca, Spain
- CEAB (CSIC), Accés Cala Sant Francesc, Blanes,Girona, Catalonia, Spain
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Geary B, Longest SM, Ottewell K, Lantz SM, Walter ST, Karubian J, Leberg PL. Genetic structure of brown pelicans (Pelecanus occidentalis) in the northern Gulf of Mexico in the context of human management and disturbance. PLoS One 2017; 12:e0185309. [PMID: 28977003 PMCID: PMC5627915 DOI: 10.1371/journal.pone.0185309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/11/2017] [Indexed: 11/19/2022] Open
Abstract
Environmental disturbances, both natural and anthropogenic, have the capacity to substantially impact animal behavior and abundance, which can in turn influence patterns of genetic diversity and gene flow. However, little empirical information is available on the nature and degree of such changes due to the relative rarity of longitudinal genetic sampling of wild populations at appropriate intervals. Addressing this knowledge gap is therefore of interest to evolutionary biologists, policy makers, and managers. In the past half century, populations of the brown pelican (Pelecanus occidentalis) in the southeastern United States have been exposed to regional extirpations, translocations, colony losses, and oil spills, but potential impacts on genetic diversity and population structure remain unknown. To investigate the cumulative impacts of recent disturbances and management actions, we analyzed seven microsatellite loci using genetic samples collected from 540 nestlings across twelve pelican colonies from two time periods, corresponding to before (n = 305) and after (n = 235) the 2010 Deepwater Horizon oil spill. Pre-2010 populations in Texas were significantly differentiated from Louisiana, Alabama, and Florida populations to the east, with reintroduced populations in southeastern Louisiana having less genetic diversity than sites in Texas, consistent with a recent bottleneck. In contrast, there was no evidence of a geographic component to genetic structure among colonies sampled after the spill, consistent with increased dispersal among sites following the event. This pattern may be associated with reduced philopatry in response to colony abandonment in the areas most heavily impacted by the Deepwater Horizon event, though other factors (e.g., rehabilitation and translocation of oiled birds or colony loss due to erosion and tropical storms) were likely also involved. Future monitoring is necessary to determine if bottlenecks and loss of genetic variation are associated with the oil spill over time, and is recommended for other systems in which disturbance effects may be inferred via repeated genetic sampling.
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Affiliation(s)
- Brock Geary
- Department of Ecology & Evolutionary Biology, Tulane University, New Orleans, Louisiana, United States of America
- * E-mail:
| | - Susan M. Longest
- Department of Ecology & Evolutionary Biology, Tulane University, New Orleans, Louisiana, United States of America
| | - Kym Ottewell
- Department of Ecology & Evolutionary Biology, Tulane University, New Orleans, Louisiana, United States of America
| | - Samantha M. Lantz
- Department of Ecology & Evolutionary Biology, Tulane University, New Orleans, Louisiana, United States of America
| | - Scott T. Walter
- Department of Ecology & Evolutionary Biology, Tulane University, New Orleans, Louisiana, United States of America
| | - Jordan Karubian
- Department of Ecology & Evolutionary Biology, Tulane University, New Orleans, Louisiana, United States of America
| | - Paul L. Leberg
- Department of Biology, University of Louisiana at Lafayette, Lafayette, Louisiana, United States of America
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Genovart M, Doak DF, Igual JM, Sponza S, Kralj J, Oro D. Varying demographic impacts of different fisheries on three Mediterranean seabird species. GLOBAL CHANGE BIOLOGY 2017; 23:3012-3029. [PMID: 28231421 DOI: 10.1111/gcb.13670] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 02/01/2017] [Indexed: 06/06/2023]
Abstract
Fisheries have an enormous economic importance, but reconciling their socio-economic features with the conservation and sustainability of marine ecosystems presents major challenges. Bycatch mortality from fisheries is clearly among the most serious global threats for marine ecosystems, affecting a wide range of top predators. Recent estimates report ca. 200,000 seabirds killed annually by bycatch in European waters. However, there is an urgent need to rigorously estimate actual mortality rates and quantify effects of bycatch on populations. The Mediterranean Sea is one of the most impacted regions. Here, we estimate for the first time both bycatch mortality rates and their population-level effects on three endemic and vulnerable Mediterranean taxa: Scopoli's shearwater, Mediterranean shag, and Audouin's gull, that die in different types of fishing gears: longlines, gillnets and sport trolling, respectively. We use multi-event capture-recapture modelling to estimate crucial demographic parameters, including the probabilities of dying in different fishing gears. We then build stochastic demography models to forecast the viability of the populations under different management scenarios. Longline bycatch was particularly severe for adults of Scopoli's shearwaters and Audouin's gulls (ca. 28% and 23% of total mortality, respectively) and also for immature gulls (ca. 90% of mortality). Gillnets had a lower impact, but were still responsible for ca. 9% of juvenile mortality on shags, whereas sport trolling only slightly influenced total mortality in gulls. Bycatch mortality has high population-level impacts in all three species, with shearwaters having the highest extinction risk under current mortality rates. Different life-history traits and compensatory demographic mechanisms between the three species are probably influencing the different bycatch impact: for shearwaters, urgent conservation actions are required to ensure the viability of their populations. Results will be very useful for guiding future seabird conservation policies and moving towards an ecosystem-based approach to sustainable fisheries management.
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Affiliation(s)
- Meritxell Genovart
- Population Ecology Group, IMEDEA (CSIC-UIB), Esporles, Spain
- Environmental Studies Program, 397 UCB University of Colorado, Boulder, CO, USA
- CEAB (CSIC), Girona, Spain
| | - Daniel F Doak
- Environmental Studies Program, 397 UCB University of Colorado, Boulder, CO, USA
| | | | - Stefano Sponza
- Department of Mathematics and Geosciences, University of Trieste, Trieste, Italy
| | | | - Daniel Oro
- Population Ecology Group, IMEDEA (CSIC-UIB), Esporles, Spain
- CEAB (CSIC), Girona, Spain
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9
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Quillfeldt P, Moodley Y, Weimerskirch H, Cherel Y, Delord K, Phillips RA, Navarro J, Calderón L, Masello JF. Does genetic structure reflect differences in non-breeding movements? A case study in small, highly mobile seabirds. BMC Evol Biol 2017; 17:160. [PMID: 28679381 PMCID: PMC5499058 DOI: 10.1186/s12862-017-1008-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/27/2017] [Indexed: 11/22/2022] Open
Abstract
Background In seabirds, the extent of population genetic and phylogeographic structure varies extensively among species. Genetic structure is lacking in some species, but present in others despite the absence of obvious physical barriers (landmarks), suggesting that other mechanisms restrict gene flow. It has been proposed that the extent of genetic structure in seabirds is best explained by relative overlap in non-breeding distributions of birds from different populations. We used results from the analysis of microsatellite DNA variation and geolocation (tracking) data to test this hypothesis. We studied three small (130–200 g), very abundant, zooplanktivorous petrels (Procellariiformes, Aves), each sampled at two breeding populations that were widely separated (Atlantic and Indian Ocean sectors of the Southern Ocean) but differed in the degree of overlap in non-breeding distributions; the wintering areas of the two Antarctic prion (Pachyptila desolata) populations are separated by over 5000 km, whereas those of the blue petrels (Halobaena caerulea) and thin-billed prions (P. belcheri) show considerable overlap. Therefore, we expected the breeding populations of blue petrels and thin-billed prions to show high connectivity despite their geographical distance, and those of Antarctic prions to be genetically differentiated. Results Microsatellite (at 18 loci) and cytochrome b sequence data suggested a lack of genetic structure in all three species. We thus found no relationship between genetic and spatial structure (relative overlap in non-breeding distributions) in these pelagic seabirds. Conclusions In line with other Southern Ocean taxa, geographic distance did not lead to genetic differences between widely spaced populations of Southern Ocean petrel species. Electronic supplementary material The online version of this article (doi:10.1186/s12862-017-1008-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Petra Quillfeldt
- Department of Animal Ecology and Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 38, 35392, Giessen, Germany.
| | - Yoshan Moodley
- Department of Zoology, University of Venda, Private Bag X5050, Thohoyandou, 0950, Republic of South Africa
| | - Henri Weimerskirch
- Centre d'Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, 79360, Villiers-en-Bois, France
| | - Yves Cherel
- Centre d'Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, 79360, Villiers-en-Bois, France
| | - Karine Delord
- Centre d'Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, 79360, Villiers-en-Bois, France
| | - Richard A Phillips
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - Joan Navarro
- Department of Conservation Biology, Estación Biológica de Doñana (EBD-CSIC), Avda. Américo Vespucio s/n, 41092, Seville, Spain
| | - Luciano Calderón
- Department of Animal Ecology and Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 38, 35392, Giessen, Germany
| | - Juan F Masello
- Department of Animal Ecology and Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 38, 35392, Giessen, Germany
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10
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Zidat T, Dell’Ariccia G, Gabirot M, Sourrouille P, Buatois B, Celerier A, Bonadonna F, Crochet PA. Reproductive isolation maintains distinct genotypes, phenotypes and chemical signatures in mixed colonies of the two European Calonectris shearwaters (Procellariiformes: Procellariidae). Zool J Linn Soc 2017. [DOI: 10.1093/zoolinnean/zlx002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Tavecchia G, Tenan S, Pradel R, Igual JM, Genovart M, Oro D. Climate-driven vital rates do not always mean climate-driven population. GLOBAL CHANGE BIOLOGY 2016; 22:3960-3966. [PMID: 27279167 DOI: 10.1111/gcb.13330] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 03/15/2016] [Indexed: 06/06/2023]
Abstract
Current climatic changes have increased the need to forecast population responses to climate variability. A common approach to address this question is through models that project current population state using the functional relationship between demographic rates and climatic variables. We argue that this approach can lead to erroneous conclusions when interpopulation dispersal is not considered. We found that immigration can release the population from climate-driven trajectories even when local vital rates are climate dependent. We illustrated this using individual-based data on a trans-equatorial migratory seabird, the Scopoli's shearwater Calonectris diomedea, in which the variation of vital rates has been associated with large-scale climatic indices. We compared the population annual growth rate λi , estimated using local climate-driven parameters with ρi , a population growth rate directly estimated from individual information and that accounts for immigration. While λi varied as a function of climatic variables, reflecting the climate-dependent parameters, ρi did not, indicating that dispersal decouples the relationship between population growth and climate variables from that between climatic variables and vital rates. Our results suggest caution when assessing demographic effects of climatic variability especially in open populations for very mobile organisms such as fish, marine mammals, bats, or birds. When a population model cannot be validated or it is not detailed enough, ignoring immigration might lead to misleading climate-driven projections.
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Affiliation(s)
- Giacomo Tavecchia
- Population Ecology Group, IMEDEA (CSIC-UIB), Miquel Marquès, 21, 07190, Esporles, Spain
| | - Simone Tenan
- Sezione Zoologia dei Vertebrati, MUSE - Museo delle Scienze, Corso del Lavoro e della Scienza 3, 38122, Trento, Italy
| | - Roger Pradel
- CEFE UMR 5175, CNRS - Université de Montpellier - Université Paul-Valéry Montpellier - EPHE, Montpellier, France
| | - José-Manuel Igual
- Population Ecology Group, IMEDEA (CSIC-UIB), Miquel Marquès, 21, 07190, Esporles, Spain
| | - Meritxell Genovart
- Population Ecology Group, IMEDEA (CSIC-UIB), Miquel Marquès, 21, 07190, Esporles, Spain
| | - Daniel Oro
- Population Ecology Group, IMEDEA (CSIC-UIB), Miquel Marquès, 21, 07190, Esporles, Spain
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12
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Munilla I, Genovart M, Paiva VH, Velando A. Colony Foundation in an Oceanic Seabird. PLoS One 2016; 11:e0147222. [PMID: 26909694 PMCID: PMC4766187 DOI: 10.1371/journal.pone.0147222] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 12/30/2015] [Indexed: 11/19/2022] Open
Abstract
Seabirds are colonial vertebrates that despite their great potential for long-range dispersal and colonization are reluctant to establish in novel locations, often recruiting close to their natal colony. The foundation of colonies is therefore a rare event in most seabird species and little is known about the colonization process in this group. The Cory’s shearwater (Calonectris diomedea) is a pelagic seabird that has recently established three new colonies in Galicia (NE Atlantic) thus expanding its distribution range 500 km northwards. This study aimed to describe the establishment and early progress of the new Galician populations and to determine the genetic and morphometric characteristics of the individuals participating in these foundation events. Using 10 microsatellite loci, we tested the predictions supported by different seabird colonization models. Possibly three groups of non-breeders, adding up to around 200 birds, started visiting the Galician colonies in the mid 2000’s and some of them eventually laid eggs and reproduced, thus establishing new breeding colonies. The Galician populations showed a high genetic diversity and a frequency of private alleles similar to or even higher than some of the large historical populations. Most individuals were assigned to several Atlantic populations and a few (if any) to Mediterranean colonies. Our study suggests that a large and admixed population is settling in Galicia, in agreement with predictions from island metapopulation models of colonization. Multiple source colonies imply that some birds colonizing Galicia were dispersing from very distant colonies (> 1500 km). Long-distance colonizations undertaken by relatively large and admixed groups of colonizers can help to explain the low levels of genetic structure over vast areas that are characteristic of most oceanic seabird species.
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Affiliation(s)
- Ignacio Munilla
- Departamento de Botánica, Facultade de Bioloxía, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia, Spain
- * E-mail: (AV); (IM)
| | - Meritxell Genovart
- Departamento de Botánica, Facultade de Bioloxía, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia, Spain
| | - Vitor H. Paiva
- Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Alberto Velando
- Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Vigo, Galicia, Spain
- * E-mail: (AV); (IM)
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Yannic G, Yearsley JM, Sermier R, Dufresnes C, Gilg O, Aebischer A, Gavrilo MV, Strøm H, Mallory ML, Guy Morrison RI, Gilchrist HG, Broquet T. High connectivity in a long-lived high-Arctic seabird, the ivory gull Pagophila eburnea. Polar Biol 2015. [DOI: 10.1007/s00300-015-1775-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rubolini D, Maggini I, Ambrosini R, Imperio S, Paiva VH, Gaibani G, Saino N, Cecere JG. The Effect of Moonlight on Scopoli's ShearwaterCalonectris diomedeaColony Attendance Patterns and Nocturnal Foraging: A Test of the Foraging Efficiency Hypothesis. Ethology 2014. [DOI: 10.1111/eth.12338] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Diego Rubolini
- Dipartimento di Bioscienze; Università degli Studi di Milano; Milano Italy
| | - Ivan Maggini
- Advanced Facility for Avian Research; University of Western Ontario; London ON Canada
- Conservation Department; LIPU-BirdLife Italy; Parma Italy
| | - Roberto Ambrosini
- Dipartimento di Biotecnologie e Bioscienze; Università degli Studi di Milano-Bicocca; Milano Italy
| | - Simona Imperio
- ISAC-CNR - Institute of Atmospheric Sciences and Climate; Consiglio Nazionale delle Ricerche; Torino Italy
| | - Vitor H. Paiva
- IMAR-CMA Marine and Environmental Research Centre; Department of Life Sciences; University of Coimbra; Coimbra Portugal
| | | | - Nicola Saino
- Dipartimento di Bioscienze; Università degli Studi di Milano; Milano Italy
| | - Jacopo G. Cecere
- Conservation Department; LIPU-BirdLife Italy; Parma Italy
- ISPRA - Italian Institute for Environmental Protection and Research; Ozzano dell'Emilia Italy
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15
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Tenan S, Pradel R, Tavecchia G, Igual JM, Sanz-Aguilar A, Genovart M, Oro D. Hierarchical modelling of population growth rate from individual capture-recapture data. Methods Ecol Evol 2014. [DOI: 10.1111/2041-210x.12194] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Simone Tenan
- Population Ecology Group; IMEDEA (CSIC-UIB); Miquel Marquès 21 Esporles Mallorca 07190 Spain
| | - Roger Pradel
- Biostatistics and Population Biology Group; Centre d'Ecologie Fonctionelle et Evolutive (Campus CNRS); 1919 Route de Mende Montpellier F-34293 France
| | - Giacomo Tavecchia
- Population Ecology Group; IMEDEA (CSIC-UIB); Miquel Marquès 21 Esporles Mallorca 07190 Spain
| | - José M. Igual
- Population Ecology Group; IMEDEA (CSIC-UIB); Miquel Marquès 21 Esporles Mallorca 07190 Spain
| | - Ana Sanz-Aguilar
- Population Ecology Group; IMEDEA (CSIC-UIB); Miquel Marquès 21 Esporles Mallorca 07190 Spain
- Estación Biológica de Doñana (CSIC); Américo Vespucio s/n Sevilla E-41092 Spain
| | - Meritxell Genovart
- Population Ecology Group; IMEDEA (CSIC-UIB); Miquel Marquès 21 Esporles Mallorca 07190 Spain
| | - Daniel Oro
- Population Ecology Group; IMEDEA (CSIC-UIB); Miquel Marquès 21 Esporles Mallorca 07190 Spain
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Population genetics of Formica aquilonia wood ants in Scotland: the effects of long-term forest fragmentation and recent reforestation. CONSERV GENET 2014. [DOI: 10.1007/s10592-014-0584-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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