Pathological and ecological host consequences of infection by an introduced fish parasite

This source preferred by Josie Pegg and Robert Britton

Authors: Britton, J.R., Pegg, J. and Williams, C.F.

http://eprints.bournemouth.ac.uk/18787/

http://www.plosone.org/article/info%3Adoi/10.1371/journal.pone.0026365

Journal: PLoS One

Volume: 6

ISSN: 1932-6203

DOI: 10.1371/journal.pone.0026365

The infection consequences of the introduced cestode fish parasite Bothriocephalus acheilognathi were studied in a cohort of wild, young-of-the-year common carp Cyprinus carpio that lacked co-evolution with the parasite. Within the cohort, parasite prevalence was 42% and parasite burdens were up to 12% body weight. Pathological changes within the intestinal tract of parasitized carp included distension of the gut wall, epithelial compression and degeneration, pressure necrosis and varied inflammatory changes. These were most pronounced in regions containing the largest proportion of mature proglottids. Although the body lengths of parasitized and non-parasitized fish were not significantly different, parasitized fish were of lower body condition and reduced weight compared to non-parasitized conspecifics. Stable isotope analysis (δ15N and δ13C) revealed trophic impacts associated with infection, particularly for δ15N where values for parasitized fish were significantly reduced as their parasite burden increased. In a controlled aquarium environment where the fish were fed ad libitum on an identical food source, there was no significant difference in values of δ15N and δ13C between parasitized and non-parasitized fish. The growth consequences remained, however, with parasitized fish growing significantly slower than non-parasitized fish, with their feeding rate (items s−1) also significantly lower. Thus, infection by an introduced parasite had multiple pathological, ecological and trophic impacts on a host with no experience of the parasite.

This data was imported from PubMed:

Authors: Britton, J.R., Pegg, J. and Williams, C.F.

http://eprints.bournemouth.ac.uk/18787/

Journal: PLoS One

Volume: 6

Issue: 10

Pages: e26365

eISSN: 1932-6203

DOI: 10.1371/journal.pone.0026365

The infection consequences of the introduced cestode fish parasite Bothriocephalus acheilognathi were studied in a cohort of wild, young-of-the-year common carp Cyprinus carpio that lacked co-evolution with the parasite. Within the cohort, parasite prevalence was 42% and parasite burdens were up to 12% body weight. Pathological changes within the intestinal tract of parasitized carp included distension of the gut wall, epithelial compression and degeneration, pressure necrosis and varied inflammatory changes. These were most pronounced in regions containing the largest proportion of mature proglottids. Although the body lengths of parasitized and non-parasitized fish were not significantly different, parasitized fish were of lower body condition and reduced weight compared to non-parasitized conspecifics. Stable isotope analysis (δ(15)N and δ(13)C) revealed trophic impacts associated with infection, particularly for δ(15)N where values for parasitized fish were significantly reduced as their parasite burden increased. In a controlled aquarium environment where the fish were fed ad libitum on an identical food source, there was no significant difference in values of δ(15)N and δ(13)C between parasitized and non-parasitized fish. The growth consequences remained, however, with parasitized fish growing significantly slower than non-parasitized fish, with their feeding rate (items s(-1)) also significantly lower. Thus, infection by an introduced parasite had multiple pathological, ecological and trophic impacts on a host with no experience of the parasite.

This data was imported from Scopus:

Authors: Britton, J.R., Pegg, J. and Williams, C.F.

http://eprints.bournemouth.ac.uk/18787/

Journal: PLoS ONE

Volume: 6

Issue: 10

eISSN: 1932-6203

DOI: 10.1371/journal.pone.0026365

The infection consequences of the introduced cestode fish parasite Bothriocephalus acheilognathi were studied in a cohort of wild, young-of-the-year common carp Cyprinus carpio that lacked co-evolution with the parasite. Within the cohort, parasite prevalence was 42% and parasite burdens were up to 12% body weight. Pathological changes within the intestinal tract of parasitized carp included distension of the gut wall, epithelial compression and degeneration, pressure necrosis and varied inflammatory changes. These were most pronounced in regions containing the largest proportion of mature proglottids. Although the body lengths of parasitized and non-parasitized fish were not significantly different, parasitized fish were of lower body condition and reduced weight compared to non-parasitized conspecifics. Stable isotope analysis (δ 15N and δ 13C) revealed trophic impacts associated with infection, particularly for δ 15N where values for parasitized fish were significantly reduced as their parasite burden increased. In a controlled aquarium environment where the fish were fed ad libitum on an identical food source, there was no significant difference in values of δ 15N and δ 13C between parasitized and non-parasitized fish. The growth consequences remained, however, with parasitized fish growing significantly slower than non-parasitized fish, with their feeding rate (items s -1) also significantly lower. Thus, infection by an introduced parasite had multiple pathological, ecological and trophic impacts on a host with no experience of the parasite. © 2011 Britton et al.

This data was imported from Web of Science (Lite):

Authors: Britton, J.R., Pegg, J. and Williams, C.F.

http://eprints.bournemouth.ac.uk/18787/

Journal: PLOS ONE

Volume: 6

Issue: 10

ISSN: 1932-6203

DOI: 10.1371/journal.pone.0026365

This data was imported from Europe PubMed Central:

Authors: Britton, J.R., Pegg, J. and Williams, C.F.

http://eprints.bournemouth.ac.uk/18787/

Journal: PloS one

Volume: 6

Issue: 10

Pages: e26365

eISSN: 1932-6203

The infection consequences of the introduced cestode fish parasite Bothriocephalus acheilognathi were studied in a cohort of wild, young-of-the-year common carp Cyprinus carpio that lacked co-evolution with the parasite. Within the cohort, parasite prevalence was 42% and parasite burdens were up to 12% body weight. Pathological changes within the intestinal tract of parasitized carp included distension of the gut wall, epithelial compression and degeneration, pressure necrosis and varied inflammatory changes. These were most pronounced in regions containing the largest proportion of mature proglottids. Although the body lengths of parasitized and non-parasitized fish were not significantly different, parasitized fish were of lower body condition and reduced weight compared to non-parasitized conspecifics. Stable isotope analysis (δ(15)N and δ(13)C) revealed trophic impacts associated with infection, particularly for δ(15)N where values for parasitized fish were significantly reduced as their parasite burden increased. In a controlled aquarium environment where the fish were fed ad libitum on an identical food source, there was no significant difference in values of δ(15)N and δ(13)C between parasitized and non-parasitized fish. The growth consequences remained, however, with parasitized fish growing significantly slower than non-parasitized fish, with their feeding rate (items s(-1)) also significantly lower. Thus, infection by an introduced parasite had multiple pathological, ecological and trophic impacts on a host with no experience of the parasite.

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