Migratory Birds as Global Dispersal Vectors

Viana, Duarte S.; Santamarı́a, Luis; Figuerola, Jordi

doi:10.1016/j.tree.2016.07.005

Cited by 156 publications

(145 citation statements)

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“…2 million birds (Wetlands International, ). Given the number of mallard individuals present in our study area, the plant taxa we recorded are likely to undergo regular long‐distance dispersal events along migratory flyways via endozoochory (Viana, Santamaría, & Figuerola, ; Viana et al., ).…”

Section: Discussionmentioning

confidence: 99%

Endozoochory of aquatic ferns and angiosperms by mallards in Central Europe

et al. 2018

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Modern literature on plant dispersal by birds focuses mainly on the importance of frugivory and scatter‐hoarding, yet recent studies show that endozoochory by migratory waterbirds is an important mechanism of long‐distance dispersal for a broad range of plants. Nevertheless, there is a lack of empirical field studies that identify the plants dispersed by waterbirds in a comprehensive manner. In particular, so far there are no detailed studies of the level of spatial variation in the plant taxa dispersed by a waterbird vector, and no clear demonstration that aquatic ferns can be dispersed by endozoochory. Consequently, we remain ignorant of the networks of dispersal interactions between granivorous waterbirds and plants. Five sets of faecal samples (total n = 215) were collected from mallards Anas platyrhynchos on autumn migration in the Hevesi‐holm and Balaton regions in Hungary, central Europe. Intact diaspores were extracted, identified and their germinability assessed under standard conditions. The plant communities recorded at different sites were compared with PERMANOVA and other multivariate methods. Macrospores of the floating watermoss Salvinia natans were recorded in 32 samples, and a total of 16 macrospores germinated, providing the first field demonstration of endozoochory of ferns by birds. Of 21 angiosperm taxa recorded (of which eight germinated), 13 were terrestrial species, although the most abundant taxa were aquatic species such as the alkali bulrush Bolboschoenus maritimus and the sago pondweed Potamogeton pectinatus. Two naturalized alien species, the common fig Ficus carica and the hackberry Celtis occidentalis were also recorded. Only four of the taxa had an endozoochory syndrome. The plant taxa dispersed varied at two different spatial scales, with minor but significant differences between samples from sites separated by less than 1 km, and major differences between the two regions separated by c. 220 km. Synthesis. This is a unique study of the spatial variation in plants dispersed by endozoochory by a migratory waterfowl species, with a high taxonomic resolution and the first demonstration of avian endozoochory of ferns. We recorded eight taxa not previously reported as dispersed by mallards, showing how more empirical studies are essential, so we can understand which plants are dispersed by migratory birds. We found evidence that networks of interactions between granivorous waterbird vectors and dispersed plants vary spatially.

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Section: Discussionmentioning

confidence: 99%

Endozoochory of aquatic ferns and angiosperms by mallards in Central Europe

et al. 2018

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“…6a). This could have occurred through seed dispersal by birds [57, 58] following migration routes along the narrow isthmus connecting North and South America and following the Andean corridor of mountains but not necessarily reaching the western side of Peru and Ecuador when migrating from south to north [59]. Hundreds of thousands of years later, a small population of P. vulgaris with Mesoamerican genetic background likely invaded the Central and Southern Andes, giving rise to the second gene pool that was later domesticated.…”

Section: Discussionmentioning

confidence: 99%

Genomic history of the origin and domestication of common bean unveils its closest sister species

et al. 2017

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BackgroundModern civilization depends on only a few plant species for its nourishment. These crops were derived via several thousands of years of human selection that transformed wild ancestors into high-yielding domesticated descendants. Among cultivated plants, common bean (Phaseolus vulgaris L.) is the most important grain legume. Yet, our understanding of the origins and concurrent shaping of the genome of this crop plant is limited.ResultsWe sequenced the genomes of 29 accessions representing 12 Phaseolus species. Single nucleotide polymorphism-based phylogenomic analyses, using both the nuclear and chloroplast genomes, allowed us to detect a speciation event, a finding further supported by metabolite profiling. In addition, we identified ~1200 protein coding genes (PCGs) and ~100 long non-coding RNAs with domestication-associated haplotypes. Finally, we describe asymmetric introgression events occurring among common bean subpopulations in Mesoamerica and across hemispheres.ConclusionsWe uncover an unpredicted speciation event in the tropical Andes that gave rise to a sibling species, formerly considered the “wild ancestor” of P. vulgaris, which diverged before the split of the Mesoamerican and Andean P. vulgaris gene pools. Further, we identify haplotypes strongly associated with genes underlying the emergence of domestication traits. Our findings also reveal the capacity of a predominantly autogamous plant to outcross and fix loci from different populations, even from distant species, which led to the acquisition by domesticated beans of adaptive traits from wild relatives. The occurrence of such adaptive introgressions should be exploited to accelerate breeding programs in the near future.Electronic supplementary materialThe online version of this article (doi:10.1186/s13059-017-1190-6) contains supplementary material, which is available to authorized users.

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“…In this context, the role of owned free-ranging dogs in the transmission of A. phagocytophilum becomes important because it is a pathogen that can infect a wide variety of vertebrates, including humans, and because they are an active species at the domestic-wildlife interface (Gompper, 2014). Furthermore, the study area is situated on The Yucatan Peninsula, which is a major stopover site for migratory birds, potentially connecting ticks and pathogen populations from North and Central America (Viana et al, 2016). Within this context, the ecology of A. phagocytophilum as a zoonotic pathogen, involve the diversity of local vertebrate hosts and human health through North and Central America.…”

Section: Discussionmentioning

confidence: 99%

Infection of Anaplasma phagocytophilum and Ehrlichia spp. in Opossums and Dogs in Campeche, Mexico: The Role of Tick Infestation

2017

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In recent years, some tick-borne diseases such as anaplasmosis and ehrlichiosis became widespread worldwide, threatening the health of humans, domestic animals and wildlife. The aims of this study were to determine the presence of Anaplasma phagocytophilum, Ehrlichia canis, and Ehrlichia chaffeensis in 102 opossums (Didelphis spp.) and 44 owned free-ranging dogs in southeastern Mexico using a specific polymerase chain reaction (PCR). A. phagocytophilum was detected in opossums and dogs with a prevalence of 3 and 27%, respectively. E. canis was only present in 7% of dogs, while we didn't detect E. chaffeensis in any host. We report the first evidence of infections of A. phagocytophilum in Didelphis virginiana and D. marsupialis in Mexico. The infection rates and patterns we found of A. phagocytophilum suggest that dogs are more directly involved in the ecology of this pathogen than opossums. Despite the small prevalence found, our results are of public health concern because of the zoonotic capabilities of A. phagocytophilum, the high tick infestation rates found and because both opossums and free-ranging dogs can achieve high population densities in the region.

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Migratory Birds as Global Dispersal Vectors

Cited by 156 publications

References 93 publications

Endozoochory of aquatic ferns and angiosperms by mallards in Central Europe

Endozoochory of aquatic ferns and angiosperms by mallards in Central Europe

Genomic history of the origin and domestication of common bean unveils its closest sister species

Infection of Anaplasma phagocytophilum and Ehrlichia spp. in Opossums and Dogs in Campeche, Mexico: The Role of Tick Infestation

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