scholarly journals Population structure ofBorrelia gariniifromIxodes uriaecollected in seabird colonies of the northwestern Atlantic Ocean

2018 ◽  
Author(s):  
Hannah J. Munro ◽  
Nicholas H. Ogden ◽  
Samir Mechai ◽  
L. Robbin Lindsay ◽  
Gregory J. Robertson ◽  
...  
Keyword(s):  
Population Structure ◽  
Atlantic Ocean ◽  
Newfoundland And Labrador ◽  
Clinical Samples ◽  
Avian Host ◽  
Ixodes Uriae ◽  
Genetic Complexity ◽  
Colonial Seabirds ◽  
Transmission Cycles ◽  
Seabird Colonies

AbstractThe occurrence ofBorrelia gariniiin seabird ticks,Ixodes uriae, associated with different species of colonial seabirds has been studied since the early 1990s. Research on the population structure of this bacterium in ticks from seabird colonies in the northeastern Atlantic Ocean has revealed admixture between marine and terrestrial tick populations. We studiedB. gariniipopulation structure inI. uriaecollected from seabird colonies in the northwestern Atlantic Ocean, in Newfoundland and Labrador, Canada. We applied a multi-locus sequence typing (MLST) scheme toB. gariniifound in ticks from four species of seabirds. TheB. gariniistrains found in this seabird colony ecosystem were diverse. Some were very similar to strains from Asia and Europe, including some obtained from human clinical samples, while others formed a divergent group specific to this region of the Atlantic Ocean.ImportanceThis study provides the firstB. gariniisequences from North American seabird ticks that were characterized using an MLST approach. This revealed new MLST sequence types and alleles, enhancing our knowledge ofB. gariniidiversity. Our findings highlight the genetic complexity ofB. gariniicirculating among seabird ticks and their avian hosts but also demonstrate surprisingly close connections betweenB. gariniiin this ecosystem and terrestrial sources in Eurasia. Genetic similarities amongB. gariniifrom seabird ticks and humans indicate the possibility thatB. gariniicirculating within seabird tick-avian host transmission cycles could directly, or indirectly via connectivity with terrestrial transmission cycles, have consequences for human health.

scholarly journals Evidence for Borrelia bavariensis Infections of Ixodes uriae within Seabird Colonies of the North Atlantic Ocean

2017 ◽  
Vol 83 (20) ◽  
Author(s):  
Hannah J. Munro ◽  
Nicholas H. Ogden ◽  
L. Robbin Lindsay ◽  
Gregory J. Robertson ◽  
Hugh Whitney ◽  
...  
Keyword(s):  
Newfoundland And Labrador ◽  
North Atlantic Ocean ◽  
Marine Ecosystem ◽  
Sensu Stricto ◽  
Ixodes Persulcatus ◽  
Content Type ◽  
Ixodes Uriae ◽  
The North ◽  
Borrelia Lusitaniae ◽  
Seabird Colonies

ABSTRACT The first report of members of the spirochete genus Borrelia in the seabird tick, Ixodes uriae, and seabird colonies occurred during the early 1990s. Since then, Borrelia spp. have been detected in these ticks and seabird colonies around the world. To date, the primary species detected has been Borrelia garinii, with rare occurrences of Borrelia burgdorferi sensu stricto and Borrelia lusitaniae. During our research on Borrelia and I. uriae in seabird colonies of Newfoundland and Labrador, Canada, we have identified Borrelia bavariensis in I. uriae. To our knowledge, B. bavariensis has previously been found only in the Eurasian tick species Ixodes persulcatus and Ixodes ricinus, and it was believed to be a rodent-specific Borrelia ecotype. We found B. bavariensis within I. uriae from three seabird colonies over three calendar years. We also reanalyzed B. garinii sequences collected from I. uriae from Eurasian seabird colonies and determined that sequences from two Russian seabird colonies likely also represent B. bavariensis. The Canadian B. bavariensis sequences from I. uriae analyzed in this study cluster with previously described sequences from Asia. Overall, this is an important discovery that illustrates and expands the range of hosts and vectors for B. bavariensis, and it raises questions regarding the possible mechanisms of pathogen dispersal from Asia to North America. IMPORTANCE To our knowledge, this is the first documentation of B. bavariensis outside Eurasia. Additionally, the bacterium was found in a marine ecosystem involving the seabird tick I. uriae and its associated seabird hosts. This indicates that the epizootiology of B. bavariensis transmission is much different from what had been described, with this species previously believed to be a rodent-specific ecotype, and it indicates that this pathogen is established, or establishing, much more widely.

Genetic diversity of Borrelia garinii from Ixodes uriae collected in seabird colonies of the northwestern Atlantic Ocean

2019 ◽  
Vol 10 (6) ◽  
pp. 101255 ◽  
Author(s):  
Hannah J. Munro ◽  
Nicholas H. Ogden ◽  
Samir Mechai ◽  
L. Robbin Lindsay ◽  
Gregory J. Robertson ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Atlantic Ocean ◽  
Borrelia Garinii ◽  
Ixodes Uriae ◽  
Seabird Colonies

Population structure and ontogenetic habitat use of Micropogonias furnieri in the Southwestern Atlantic Ocean inferred by otolith chemistry

2021 ◽  
Vol 240 ◽  
pp. 105953
Author(s):  
Esteban Avigliano ◽  
Nadia M. Alves ◽  
M. Rita Rico ◽  
Claudio O. Ruarte ◽  
Luciana D’Atri ◽  
...  
Keyword(s):  
Population Structure ◽  
Atlantic Ocean ◽  
Habitat Use ◽  
Otolith Chemistry ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
Micropogonias Furnieri

scholarly journals Correction: Biofilm Morphotypes and Population Structure among Staphylococcus epidermidis from Commensal and Clinical Samples

PLoS ONE ◽  
2016 ◽  
Vol 11 (4) ◽  
pp. e0154510 ◽  
Author(s):  
Llinos G. Harris ◽  
Susan Murray ◽  
Ben Pascoe ◽  
James Bray ◽  
Guillaume Meric ◽  
...  
Keyword(s):  
Population Structure ◽  
Staphylococcus Epidermidis ◽  
Clinical Samples

scholarly journals Biofilm Morphotypes and Population Structure among Staphylococcus epidermidis from Commensal and Clinical Samples

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0151240 ◽  
Author(s):  
Llinos G. Harris ◽  
Susan Murray ◽  
Ben Pascoe ◽  
James Bray ◽  
Guillaume Meric ◽  
...  
Keyword(s):  
Population Structure ◽  
Staphylococcus Epidermidis ◽  
Clinical Samples

The food habits and distribution of Northern Gannets, Sula bassanus, off eastern Newfoundland and Labrador

1985 ◽  
Vol 63 (1) ◽  
pp. 181-188 ◽  
Author(s):  
I. R. Kirkham ◽  
P. L. McLaren ◽  
W. A. Montevecchi
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
Newfoundland And Labrador ◽  
Cold Water ◽  
North Atlantic Ocean ◽  
High Energy ◽  
Aerial Survey ◽  
Food Samples ◽  
Northern Areas ◽  
And Migration

The marine distribution of Northern Gannets in the southern Labrador Sea and western North Atlantic Ocean was studied by aerial surveys over a 7-month period in 1981. Gannets were seen on every biweekly aerial survey from mid-April to the end of October. Densities were highest within a 60 km radius of Funk Island, but few gannets were seen offshore outside this radius. Before July, most gannets were seen south of Labrador (52°N), but as the breeding season advanced, gannet densities increased in northern areas. Densities in most areas peaked during mid-July. From 1977 to 1982 we collected food samples from gannets in the colony on Funk Island, Newfoundland. A broad spectrum of prey are taken. Mackerel and herring, prey that are associated with warm water, appear to be preferred owing to their large sizes and high energy densities. Prey occurrence in gannet food samples was associated with the time of spawning (capelin) and migration near Funk Island (herring and mackerel). The northernmost region of warm and cold water mixing appears to be the main factor limiting the northern distribution of gannets in the western North Atlantic Ocean.

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