MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS
Predators have been hypothesized to prey on individuals in a poor state of health, although this hypothesis has only rarely been examined. We used extensive data on prey abundance and availability from two long-term studies of the European Sparrowhawk (Accipiter nisus) and the Eurasian Goshawk (Acci...
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ftdatacite:10.6084/m9.figshare.c.3299672 2023-05-15T13:00:49+02:00 MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS Møller, Anders Pape Nielsen, Jan Tøttrup 2016 https://dx.doi.org/10.6084/m9.figshare.c.3299672 https://figshare.com/collections/MALARIA_AND_RISK_OF_PREDATION_A_COMPARATIVE_STUDY_OF_BIRDS/3299672 unknown Figshare https://dx.doi.org/10.1890/06-0747 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3299672 https://doi.org/10.1890/06-0747 2021-11-05T12:55:41Z Predators have been hypothesized to prey on individuals in a poor state of health, although this hypothesis has only rarely been examined. We used extensive data on prey abundance and availability from two long-term studies of the European Sparrowhawk (Accipiter nisus) and the Eurasian Goshawk (Accipiter gentilis) to quantify the relationship between predation risk of different prey species and infection with malaria and other protozoan blood parasites. Using a total of 31 745 prey individuals of 65 species of birds from 1709 nests during 1977–1997 for the Sparrowhawk and a total of 21 818 prey individuals of 76 species of birds from 1480 nests for the Goshawk during 1977–2004, we show that prey species with a high prevalence of blood parasites had higher risks of predation than species with a low prevalence. That was also the case when a number of confounding variables of prey species, such as body mass, breeding sociality, sexual dichromatism, and similarity among species in risk of predation due to common descent, were controlled in comparative analyses of standardized linear contrasts. Prevalence of the genera Haemoproteus , Leucocytozoon, Plasmodium, and Trypanosoma were correlated with each other, and we partitioned out the independent effects of different protozoan genera on predation risk in comparative analyses. Prevalence of Haemoproteus , Leucocytozoon, and Plasmodium accounted for interspecific variation in predation risk for the two raptors. These findings suggest that predation is an important factor affecting parasite–host dynamics because predators tend to prey on hosts that are more likely to be infected, thereby reducing the transmission success of parasites. Furthermore, this study demonstrates that protozoan infections are a common cause of death for hosts mediated by increased risk of predation. Article in Journal/Newspaper Accipiter gentilis DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Møller, Anders Pape Nielsen, Jan Tøttrup MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
Predators have been hypothesized to prey on individuals in a poor state of health, although this hypothesis has only rarely been examined. We used extensive data on prey abundance and availability from two long-term studies of the European Sparrowhawk (Accipiter nisus) and the Eurasian Goshawk (Accipiter gentilis) to quantify the relationship between predation risk of different prey species and infection with malaria and other protozoan blood parasites. Using a total of 31 745 prey individuals of 65 species of birds from 1709 nests during 1977–1997 for the Sparrowhawk and a total of 21 818 prey individuals of 76 species of birds from 1480 nests for the Goshawk during 1977–2004, we show that prey species with a high prevalence of blood parasites had higher risks of predation than species with a low prevalence. That was also the case when a number of confounding variables of prey species, such as body mass, breeding sociality, sexual dichromatism, and similarity among species in risk of predation due to common descent, were controlled in comparative analyses of standardized linear contrasts. Prevalence of the genera Haemoproteus , Leucocytozoon, Plasmodium, and Trypanosoma were correlated with each other, and we partitioned out the independent effects of different protozoan genera on predation risk in comparative analyses. Prevalence of Haemoproteus , Leucocytozoon, and Plasmodium accounted for interspecific variation in predation risk for the two raptors. These findings suggest that predation is an important factor affecting parasite–host dynamics because predators tend to prey on hosts that are more likely to be infected, thereby reducing the transmission success of parasites. Furthermore, this study demonstrates that protozoan infections are a common cause of death for hosts mediated by increased risk of predation. |
format |
Article in Journal/Newspaper |
author |
Møller, Anders Pape Nielsen, Jan Tøttrup |
author_facet |
Møller, Anders Pape Nielsen, Jan Tøttrup |
author_sort |
Møller, Anders Pape |
title |
MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS |
title_short |
MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS |
title_full |
MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS |
title_fullStr |
MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS |
title_full_unstemmed |
MALARIA AND RISK OF PREDATION: A COMPARATIVE STUDY OF BIRDS |
title_sort |
malaria and risk of predation: a comparative study of birds |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3299672 https://figshare.com/collections/MALARIA_AND_RISK_OF_PREDATION_A_COMPARATIVE_STUDY_OF_BIRDS/3299672 |
genre |
Accipiter gentilis |
genre_facet |
Accipiter gentilis |
op_relation |
https://dx.doi.org/10.1890/06-0747 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3299672 https://doi.org/10.1890/06-0747 |
_version_ |
1766261116669788160 |