Anti-parasite treatment, but not mercury burdens, influence nesting propensity dependent on arrival time or body condition in a marine bird

Provencher, Jennifer F.; Mallory, ML; Wilson, Scott; Gilchrist, H. Grant

doi:10.1016/j.scitotenv.2016.09.130

Cited by 18 publications

(34 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was suggested that the minute effects of parasites observed might be explained by the female eiders’ reduced food intake during incubation, which likely starves and kills the parasites (Hanssen et al, 2003; Thompson, 1985). Similarly, Provencher et al (2017) found that anti-parasite treatment increased the probability of nesting in females arriving late or in poor condition to the breeding site. In an experimental infection of eider chicks with the acanthocephalan Profilicollis minutes , Hollmén et al (1999) found that infected chicks gained less weight compared to non-infected chicks.…”

Section: Introductionmentioning

confidence: 86%

Helminths in common eiders (Somateria mollissima): Sex, age, and migration have differential effects on parasite loads

Vestbo

Hindberg

Forbes

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

In birds, parasites cause detrimental effects to the individual host, including reduced survival and reproductive output. The level of parasitic infection can vary with a range of factors, including migratory status, body size, sex, and age of hosts, or season. Understanding this baseline variation is important in order to identify the effects of external changes such as climate change on the parasitic load and potential impacts to individuals and populations. In this study, we compared the infection level (prevalence, intensity, and abundance) of gastrointestinal parasites in a total of 457 common eiders ( Somateria mollissima ) from four different sampling locations (Belcher Islands, Cape Dorset, West Greenland and Newfoundland), and explored the effects of migration, sex and age on levels of parasitism. Across all samples, eiders were infected with one nematode genus, two acanthocephalan genera, three genera of cestodes, and three trematode genera. Migratory phase and status alone did not explain the observed variation in infection levels; the expectation that post-migratory eiders would be more parasitized than pre-migratory eiders, due to the energetic cost of migration, did not fit our results. No effect of age was detected, whereas effects of sex and body size were only detected for certain parasitic taxa and was inconsistent with location. Since gastrointestinal helminths are trophically-transmitted, future studies of the regional and temporal variation in the diet of eiders and the associated variation and infestation level of intermediate hosts might further explain the observed variation of the parasitic load in eiders in different regions.

show abstract

Section: Introductionmentioning

confidence: 86%

Helminths in common eiders (Somateria mollissima): Sex, age, and migration have differential effects on parasite loads

Vestbo

Hindberg

Forbes

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

show abstract

“…For example, the effects of a parasite may only be detectable during times of physiological stress (e.g. breeding or migration), but not during other parts of the annual cycle (Provencher et al, 2017). Identifying the links between such basic epidemiological information and host physiological and behavioural traits, in order to assess the precise effects of infection on host fitness, therefore remains very challenging.…”

Section: Discussionmentioning

confidence: 99%

“…Helminths are typically studied in seabirds through carcass collection (e.g. Mallory et al, 2007), although some studies have used regurgitation, endoscopic techniques, and anti-helminth treatments in seabirds, to assess parasitism in the gastrointestinal tract and their effects (Fonteneau and Cook, 2013;Granroth-Wilding et al, 2017;Provencher et al, 2017). Information on the impact of helminths on some species are more available because they are hunted or often beach cast, but overall the need for carcasses poses a challenge to explore helminth-seabird relationships in wild populations, as lethal sampling is most often used.…”

Section: Helminthsmentioning

confidence: 99%

“…Recent research has provided an overview of some of these relationships (e.g. Granroth-Wilding et al, 2014;Provencher et al, 2017), whereas others, such as Grimaldi et al (2011), focused on the impact of parasites in specific bioregions and orders/genera. Except under extreme conditions where the presence of a parasite has a devastating impact causing widespread mortality (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Parasites of seabirds: A survey of effects and ecological implications

Khan

Provencher

Forbes

et al. 2019

Advances in Marine Biology

View full text Add to dashboard Cite

Contentsand pelicans (Pelecaniformes) and marine seaducks and loons (Anseriformes and Gaviiformes). We found that the seabird orders of Charadriiformes and Procellariiformes were most represented in the parasite-seabird literature. While negative effects were reported in seabirds associated with all the parasite groups, most effects have been studied in adults with less information known about how parasites may affect chicks and fledglings. We found studies most often reported on negative effects in seabird hosts during the breeding season, although this is also the time when most seabird research occurs. Many studies report that external factors such as condition of the host, pollution, and environmental conditions can influence the effects of parasites, thus cumulative effects likely play a large role in how parasites influence seabirds at both the individual and population level. With an increased understanding of parasite-host dynamics it is clear that major environmental changes, often those associated with human activities, can directly or indirectly affect the distribution, abundance, or virulence of parasites and pathogens. Flea seabird Mites seabird Protist sea duck Virus seaduck Avipoxvirus seabird Flies seabird Mosquitoes seabird Protists Sea duck Virus seafowl 4 Junaid S. Khan et al.

show abstract

“…In particular, in some Arctic locations and for some projects, consultation and collaboration with northern communities or organizations are essential to successful and meaningful research programs. In our Canadian work this has provided clear, mutual benefits (see Gilchrist et al 2005;Mallory et al 2006;Provencher et al 2013Provencher et al , 2016 for examples), but achieving these successes was only possible with considerable time spent writing proposals to acquire extra resources required to cover these outreach expenses. In the case of holding a complete workshop (Provencher et al 2013), the costs can be considerable (half of a typical researcher's annual budget; below).…”

Section: Discussionmentioning

confidence: 99%

Financial costs of conducting science in the Arctic: examples from seabird research

et al. 2018

View full text Add to dashboard Cite

Research in remote locations is more expensive than similar activities at sites with easier access, but these costs have rarely been compared. Using examples from seabird research, we show that conducting research in the Arctic is typically eight times more expensive than pursuing similar studies at a southern location. The differences in costs are related principally to the much higher expenses of travel and shipping (typically 4–10× higher for Arctic work), as well as the good practice of meaningful engagement with northern communities (4%–25% of project costs). Although there is some variation in costs among Arctic countries, we hope that the consistent pattern of relatively higher Arctic costs allows policy-makers and funding agencies to better plan for research support, especially for this region that is experiencing rapid environmental change.

show abstract

Anti-parasite treatment, but not mercury burdens, influence nesting propensity dependent on arrival time or body condition in a marine bird

Cited by 18 publications

References 56 publications

Helminths in common eiders (Somateria mollissima): Sex, age, and migration have differential effects on parasite loads

Helminths in common eiders (Somateria mollissima): Sex, age, and migration have differential effects on parasite loads

Parasites of seabirds: A survey of effects and ecological implications

Financial costs of conducting science in the Arctic: examples from seabird research

Contact Info

Product

Resources

About