Food supplementation protects Magnificent frigatebird chicks against a fatal viral disease

Sebastiano, Manrico; Eens, Marcel; Pineau, Kévin; Chastel, Olivier

doi:10.1111/conl.12630

Cited by 9 publications

(22 citation statements)

References 39 publications

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“…Mercury exposure can therefore likely be ruled out as a plausible candidate stressor for this population. However, suppression of the immune system in these birds might also be due to malnutrition, as has previously been suggested and recently corroborated in frigatebirds (13,17).…”

Section: Resultssupporting

confidence: 60%

“…Since the first appearance of clinical signs in frigatebirds, we have also started annual monitoring programs for the other species that breed sympatrically in the natural reserve. On the 30th of April 2009, we found several dead or dying adult sooty terns Onychoprion fuscatus showing similar clinical signs of frigatebirds (bone frailty, hyperkeratosis) as described previously (13,16,17). Our goal was to determine if the observed symptoms could be due to a cross-species transmission of the alphaherpesvirus that affect magnificent frigatebirds or the results of an infection with an unknown herpesvirus.…”

Section: Introductionmentioning

confidence: 59%

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Detection and Phylogenetic Characterization of a Novel Herpesvirus in Sooty Terns Onychoprion fuscatus

et al. 2020

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Since 2005, we have recorded annual episodes of alphaherpesvirus outbreaks in chicks of magnificent frigatebird Fregata magnificens on the Ile du Grand Connétable Nature Reserve in French Guiana. In 2009, we found sooty terns, Onychoprion fuscatus, that live sympatrically with frigatebirds, with visible clinical signs of a potential viral infection. To determine if the symptoms observed in sooty terns could be associated with an alphaherpesvirus previously identified in frigatebirds, we carried out molecular screening of samples collected from seven individuals. We identified and characterized a novel viral sequence from five birds. BLAST searches, pairwise nucleotide, and amino acid sequence comparisons, as well as phylogenetic analyses confirmed that the sequence belonged to the Herpesviridae family, of the Alphaherpesvirinae subfamily. We observed that it clustered with strains isolated from Podargidae (Caprimulgiformes), Columbiformes, and Falconiformes, but was distinct from the frigatebird herpesvirus. We have tentatively named it Onychoprion fuscatus alphaherpesvirus 1, (OfusAHV1). These two sequences, although found syntopic on the Ile du Grand Connétable, belong to two distinct alphaherpesvirus strains. Thus, the clinical symptoms showed by sooty terns do not likely result from a cross-species transmission event. Future work is needed to better characterize the virus and to investigate herpesvirus prevalence in healthy, free-ranging sooty terns, and to assess the impact of the virus on population viability.

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Section: Resultssupporting

confidence: 60%

Section: Introductionmentioning

confidence: 59%

Detection and Phylogenetic Characterization of a Novel Herpesvirus in Sooty Terns Onychoprion fuscatus

et al. 2020

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“…This example and others (e.g. Sebastiano, Eens, Pineau, Chastel, & Costantini, ) illustrate that infectious diseases can represent an important, but often neglected, threat to seabird population viability. Avian cholera outbreaks on Amsterdam Island not only affect this globally significant yellow‐nosed albatross population (Weimerskirch, ), but are also suspected to cause mortality in two other endangered species: the sooty albatross Phoebetria fusca and the northern rockhopper penguin Eudyptes moseleyi (Jaeger et al, ).…”

Section: Introductionmentioning

confidence: 69%

Predator and scavenger movements among and within endangered seabird colonies: Opportunities for pathogen spread

Gamble

Bazire

Delord

et al. 2019

Journal of Applied Ecology

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1. The spatial structure of host communities is expected to constrain pathogen spread. However, predators and/or scavengers may connect distant host (sub) populations when foraging. Determining whether some individuals or populations play a prominent role in the spread of pathogens is critical to inform management measures.2. We explored movements and epidemiological status of brown skuas Stercorarius antarcticus, the only avian terrestrial consumer native of Amsterdam Island (Indian Ocean), to assess whether and how they could be involved in the spread of the bacterium Pasteurella multocida, which recurrently causes avian cholera outbreaks in endangered albatross and penguin species breeding on the island.3. High proportions of seropositive and DNA-positive individuals for P. multocida indicated that skuas are highly exposed to the pathogen and may be able to transmit it. Movement tracking revealed that the foraging ranges of breeding skuas largely overlap among individuals and expand all along the coasts where albatrosses and penguins nest, but not on the inland plateau hosting the endemic Amsterdam albatross Diomedea amsterdamensis. 4. Considering the epidemiological and movement data, skua movements may provide opportunity for pathogen spread among and within seabird colonies. 5. Synthesis and applications. This work highlights the importance of considering the behaviour and epidemiological status of predators and scavengers in disease dynamics because the foraging movements of individuals of such species can potentially limit the efficiency of local management measures in spatially structured host communities. Such species could thus represent priority vaccination targets Additional supporting information may be found online in the Supporting Information section. How to cite this article: Gamble A, Bazire R, Delord K, et al. Predator and scavenger movements among and within endangered seabird colonies: Opportunities for pathogen spread. J Appl Ecol. 2020;57:367-378. https ://doi.

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“…Wildlife diseases play major roles in biodiversity conservation and the effects of most diseases in wildlife species remain unclear (Astorga et al, 2018;Sebastiano et al, 2019). A relatively recent event in China is the mass deaths of gorals (Naemorhedus goral ) and Chinese serows (Capricornis milneedwardsii ) , two rare and endangered animals listed in Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) appendix I, belong to order Artiodactyla, family Bovidae, and subfamily Caprinae and are widely distributed in the Qinling Mountains, and these events have been recorded many times in local routine patrols since 2012.…”

Section: Introductionmentioning

confidence: 99%

Sarcoptic Mange is an Emerging Threat to Biodiversity in the Qinling Mountains in China

Chen

Zhang

et al. 2022

Preprint

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Sarcoptic mange, a disease caused by the burrowing mite Sarcoptes scabiei, is globally endemic and an emerging threat to wildlife. Although many studies have shown that wildlife diseases play key roles in biodiversity conservation, knowledge about sarcoptic mange is still insufficient. In this study, we aim to improve the understanding of the impacts of sarcoptic mange on wildlife populations, the mechanisms involved in its ecoepidemiology, and the associated risks to public and ecosystem health by investigating mass death events in gorals and serows in the Qinling Mountains. We conducted interviews with practitioners and local people in the central Qinling Mountains. From the same locations, we collected 24 cutaneous samples from various animals and surveillance data from infrared cameras. Pathological, parasitological and microbiological examinations of the samples were performed. Mite-induced cutaneous lesions, mites and eggs were observed in samples from dead gorals and one dead serow, but not in other species. Molecular analysis confirmed the mites to be S. scabiei that originated from rabbits. The data obtained from the interviews and infrared cameras indicated that the death of wildlife was related to sarcoptic mange infection and that there had been a decrease in the goral population since the outbreak of the disease. We confirmed that sarcoptic mange was the major cause of the mass death events and may have spread from the western to eastern Qinling Mountains. Based on our findings, we propose several protection strategies to help preserve biodiversity in the Qinling Mountains.

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Food supplementation protects Magnificent frigatebird chicks against a fatal viral disease

Cited by 9 publications

References 39 publications

Detection and Phylogenetic Characterization of a Novel Herpesvirus in Sooty Terns Onychoprion fuscatus

Detection and Phylogenetic Characterization of a Novel Herpesvirus in Sooty Terns Onychoprion fuscatus

Predator and scavenger movements among and within endangered seabird colonies: Opportunities for pathogen spread

Sarcoptic Mange is an Emerging Threat to Biodiversity in the Qinling Mountains in China

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