Temporal and spatial variation in prevalence of the parasite<i>Syngamus trachea</i>in a metapopulation of house sparrows (<i>Passer domesticus</i>)

Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Sæther, Bernt‐Erik; Ringsby, Thor Harald

doi:10.1017/s0031182013000735

Cited by 15 publications

(34 citation statements)

References 42 publications

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“…In addition to the possible eff ect of S. trachea , interactions between one or more parasites may also contribute to variation in survival in house sparrows. We have detected several other parasite species inhabiting our study populations (Holand et al 2013), both from our feces samples (endoparasites: Isospora spp., Capillaria spp., Choanotaenia spp.) and visual inspection of house sparrows (ectoparasites: Hippoboscidae spp., Ornithonyssus spp., Ceratophyllus spp.).…”

Section: Discussionmentioning

confidence: 92%

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Lower survival probability of house sparrows severely infected by the gapeworm parasite

Holand

Jensen

Tufto

et al. 2014

Journal of Avian Biology

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18The effect of parasites in natural populations has received increasing attention in recent years. 19Studies have shown that parasites may play an important part in population ecology due to 20 their potential effects on host fitness. The main purpose of the present study was to 21 investigate the effect of a nematode parasite (gapeworm, Syngamus trachea) on survival 22 probability of house sparrows (Passer domesticus) from six natural populations located on 4 23 islands in the Helgeland archipelago in northern Norway. Infection status was obtained from 24 feces samples collected from 603 house sparrows in the summer and autumn of 2007 -2011. 25 We also collected data on a visible symptom of severe infection (gasping for air) in 1391 26 house sparrows in the summer and autumn 2004-2011. We took advantage of recent advances 27 in disease modeling in a multievent capture-mark-recapture framework to account for 28 imperfect observations (state uncertainty). Each dataset was separately analyzed, in both 29 analyses the relationships of year, island, individual body condition, age class and population 30 density with survival probabilities. The relationship between infection (determined by feces 31 egg counts) on annual survival of house sparrows was not statistically significant. However, 32 the probability of annual survival was found to be significantly lower for adult house 33 sparrows exhibiting a symptom of severe gapeworm infection, gasping for air. The present 34 study demonstrates that severe infection by a parasite can have a negative relationship with 35 survival probability of short lived avian hosts in wild populations. 36 37

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Section: Discussionmentioning

confidence: 92%

“…become adults), few survive more than 2 yr (Anderson 2006). Houses sparrows can become exposed to S. trachea infection (mainly during the summer/autumn, Holand et al 2013) through oral ingestion of parasite larvae (e.g. contaminated food items) (Atkinson et al 2008).…”

Section: Study Speciesmentioning

confidence: 99%

Lower survival probability of house sparrows severely infected by the gapeworm parasite

Holand

Jensen

Tufto

et al. 2014

Journal of Avian Biology

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“…The study was carried out on the island of Hestmannøy (N 66° 33 00 E 12° 51 00), located in the Helgeland archipelago northern Norway (described in previous studies [ 20 , 21 ]). Since 1993, house sparrows on Hestmannøy and the surrounding islands have been systematically captured, marked and reencountered several times during their lifetime (e.g.…”

Section: Methodsmentioning

confidence: 99%

“…As described in detail previously [ 20 , 21 ], the nematode worm S . trachea has a global distribution and has been found in a majority of terrestrial bird genera [ 24 , 25 ].…”

Section: Methodsmentioning

confidence: 99%

Endoparasite Infection Has Both Short- and Long-Term Negative Effects on Reproductive Success of Female House Sparrows, as Revealed by Faecal Parasitic Egg Counts

et al. 2015

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Parasites have the potential to severely reduce host reproductive success. However, the effects of endoparasites on reproductive success have not received the same amount of attention as the effects of parasites on host survival. We investigated the relationship between an avian endoparasite (gapeworm, Syngamus trachea) and both current and future reproductive success of female house sparrows (Passer domesticus) in a population on the coast of Helgeland, northern Norway. We found that the proportion of eggs in a nest that failed to develop into fledglings increased as the faecal parasitic egg count of the mothers increased. We also found that juvenile females with high numbers of parasitic eggs in their faeces had lower lifetime reproductive success as adults. However, we did not find a relationship between maternal parasite infection and clutch size or recruitment rate of offspring. To our knowledge this is the first study to find a relationship between reproductive success of an avian host and faecal egg count of an endoparasite. The present study indicates that infection by an endoparasite may be associated with lower individual reproductive success in both the short-term and long-term in a wild population of hosts.

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“…La cavidad oral y el estado de las alas fueron las variables que presentaron significancia estadística en relación a las infecciones con PGI. Muchas de las aves en su cavidad oral, evidenciaron salivación viscosa, lo que podría indicar un cierto grado de deshidratación, el cual es un signo que algunos nematodos pueden ocasionar en sus hospedadores (Holand, Jensen, Tufto, Saether, & Ringsby, 2013). En el caso del estado de las alas o plumaje de las aves, se ha demostrado que es uno de los mayores indicadores cualitativos de buena salud (Bitton, Dawson, & Ochs, 2008;Marichal-Arbona, & Ávila, 2014).…”

Section: Resultsunclassified

Parásitos gastrointestinales de aves silvestres en un ecosistema ribereño urbano tropical en Heredia, Costa Rica

Pérez-Gómez

Jiménez-Rocha

Bermúdez-Rojas

2018

RBT

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Gastrointestinal parasites of wild birds in a tropical riverine urban ecosystem in Heredia, Costa Rica. In urban ecosystems, rivers provide various ecosystem services, among them, serving as interurban biological corridor, allowing birds to move and shelter in the middle of the city. However, high levels of pollution expose them, and even humans, to several health problems. Hence the importance of performing environmental diagnoses that allows to identify alterations and mitigate them in a timely manner. This study provides a first diagnosis of the parasitic situation of wild birds along the Pirro river which is located in an urban environment, fragmented and with high levels of surface water pollution. The sampling was carried out at the upper and middle part of the Pirro river in Heredia, Costa Rica. Mist-nets were used to capture the birds, and a general objective exam (GOE) was conducted in order to evaluate their nutritional and hydration state, as well as their physical state. In addition, stool samples were collected in order to characterize the gastrointestinal parasites (GPI). This procedure was carried out on 158 birds, belonging to 30 species, three PGI groups were identified: protozoa, nematodes and cestodes. The highest percentages of infection were represented by coccidia, with 97.6 %, followed by nematodes and cestodes with 2.4 %. Within the group of coccidios, it was possible to identify Eimeria spp., Isospora spp., in the nematodes: at the Strongylida group level and at the Capillaria spp., and for the cestodes: Choanotaenia spp. GOE resulted regular-to-good in all individuals captured, however, a general linear model was used to identify that the oral cavity and the state of the plumage could be the more linked variables with the percentage of infection by gastrointestinal parasites in birds, due to the fact that the oral cavity is the bird’s main route of ingestion, as well as the state of the plumage shows its vigor. Rev. Biol. Trop. 66(2): 788-798. Epub 2018 June 01.

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Temporal and spatial variation in prevalence of the parasiteSyngamus tracheain a metapopulation of house sparrows (Passer domesticus)

Cited by 15 publications

References 42 publications

Lower survival probability of house sparrows severely infected by the gapeworm parasite

Lower survival probability of house sparrows severely infected by the gapeworm parasite

Endoparasite Infection Has Both Short- and Long-Term Negative Effects on Reproductive Success of Female House Sparrows, as Revealed by Faecal Parasitic Egg Counts

Parásitos gastrointestinales de aves silvestres en un ecosistema ribereño urbano tropical en Heredia, Costa Rica

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