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Article ; Online: Parasites and biological invasions: parallels, interactions, and control.

Dunn, Alison M / Hatcher, Melanie J

2015 Volume 31, Issue 5, Page(s) 189–199

Abstract: Species distributions are changing at an unprecedented rate owing to human activity. We examine how two key processes of redistribution - biological invasion and disease emergence - are interlinked. There are many parallels between invasion and emergence ...

Abstract	Species distributions are changing at an unprecedented rate owing to human activity. We examine how two key processes of redistribution - biological invasion and disease emergence - are interlinked. There are many parallels between invasion and emergence processes, and invasions can drive the spread of new diseases to wildlife. We examine the potential impacts of invasion and disease emergence, and discuss how these threats can be countered, focusing on biosecurity. In contrast with international policy on emerging diseases of humans and managed species, policy on invasive species and parasites of wildlife is fragmented, and the lack of international cooperation encourages individual parties to minimize their input into control. We call for international policy that acknowledges the strong links between emerging diseases and invasion risk.
MeSH term(s)	Animals ; Animals, Wild/parasitology ; Ecosystem ; Host-Parasite Interactions ; Introduced Species ; Parasites/physiology ; Parasitic Diseases, Animal/prevention & control ; Parasitic Diseases, Animal/transmission ; Policy ; Risk Factors ; Zoonoses
Language	English
Publishing date	2015-05
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Review
ZDB-ID	2036227-4
ISSN	1471-5007 ; 1471-4922
ISSN (online)	1471-5007
ISSN	1471-4922
DOI	10.1016/j.pt.2014.12.003
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Article: Parasites influence cannibalistic and predatory interactions within and between native and invasive amphipods.

Bunke, Mandy / Dick, Jaimie T A / Hatcher, Melanie J / Dunn, Alison M

Diseases of aquatic organisms

2019 Volume 136, Issue 1, Page(s) 79–86

Abstract: In Northern Ireland, the amphipods Gammarus duebeni celticus (native) and G. pulex (invasive) coexist in some places, whilst in others the native species has been replaced by the invader. We explored the role of parasites in mediating interactions ... ...

Abstract	In Northern Ireland, the amphipods Gammarus duebeni celticus (native) and G. pulex (invasive) coexist in some places, whilst in others the native species has been replaced by the invader. We explored the role of parasites in mediating interactions between these amphipods, which demonstrate mutual intraguild predation (IGP: predation between animals that also compete for prey). IGP and cannibalism can be important factors in structuring populations and communities. We investigated the effects of parasitism on rates of IGP between G. d. celticus and G. pulex and on cannibalism within each species by comparing functional responses (FRs: relationships between the use of a prey resource and its availability). Infection with the microsporidian Pleistophora mulleri caused an increase in IGP and cannibalism by G. d. celticus, which showed increased attack rates and reduced prey handling times. In contrast, infection with the acanthocephalan parasite Echinorhynchus truttae did not alter IGP or cannibalism by G. pulex. A prey preference experiment revealed that both amphipods were more likely to feed on heterospecific rather than conspecific prey, and this was also corroborated by the fact that overall IGP FRs were higher than cannibalism FRs. This may be selectively advantageous, as feeding on heterospecific prey removes possible competitors without the risk of consuming juvenile kin or acquiring parasites from infected conspecifics. Infection of the native G. d. celticus with P. mulleri enhanced IGP on the invasive G. pulex, which is likely to facilitate the coexistence of the 2 species.
MeSH term(s)	Amphipoda/parasitology ; Amphipoda/physiology ; Animals ; Cannibalism ; Host-Parasite Interactions ; Introduced Species ; Pleistophora/pathogenicity ; Predatory Behavior
Language	English
Publishing date	2019-10-01
Publishing country	Germany
Document type	Journal Article
ISSN	0177-5103
ISSN	0177-5103
DOI	10.3354/dao03415
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Parasites that change predator or prey behaviour can have keystone effects on community composition.

Hatcher, Melanie J / Dick, Jaimie T A / Dunn, Alison M

Biology letters

2014 Volume 10, Issue 1, Page(s) 20130879

Abstract: Parasites play pivotal roles in structuring communities, often via indirect interactions with non-host species. These effects can be density-mediated (through mortality) or trait-mediated (behavioural, physiological and developmental), and may be crucial ...

Abstract	Parasites play pivotal roles in structuring communities, often via indirect interactions with non-host species. These effects can be density-mediated (through mortality) or trait-mediated (behavioural, physiological and developmental), and may be crucial to population interactions, including biological invasions. For instance, parasitism can alter intraguild predation (IGP) between native and invasive crustaceans, reversing invasion outcomes. Here, we use mathematical models to examine how parasite-induced trait changes influence the population dynamics of hosts that interact via IGP. We show that trait-mediated indirect interactions impart keystone effects, promoting or inhibiting host coexistence. Parasites can thus have strong ecological impacts, even if they have negligible virulence, underscoring the need to consider trait-mediated effects when predicting effects of parasites on community structure in general and biological invasions in particular.
MeSH term(s)	Animals ; Host-Parasite Interactions ; Parasites/classification ; Parasites/physiology ; Predatory Behavior ; Species Specificity
Language	English
Publishing date	2014-01-15
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2135022-X
ISSN	1744-957X ; 1744-9561
ISSN (online)	1744-957X
ISSN	1744-9561
DOI	10.1098/rsbl.2013.0879
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Article: Parasites and biological invasions: parallels, interactions, and control

Dunn, Alison M / Melanie J. Hatcher

Trends in parasitology. 2015 May, v. 31, no. 5

2015

Abstract: Species distributions are changing at an unprecedented rate owing to human activity. We examine how two key processes of redistribution – biological invasion and disease emergence – are interlinked. There are many parallels between invasion and emergence ...

Abstract	Species distributions are changing at an unprecedented rate owing to human activity. We examine how two key processes of redistribution – biological invasion and disease emergence – are interlinked. There are many parallels between invasion and emergence processes, and invasions can drive the spread of new diseases to wildlife. We examine the potential impacts of invasion and disease emergence, and discuss how these threats can be countered, focusing on biosecurity. In contrast with international policy on emerging diseases of humans and managed species, policy on invasive species and parasites of wildlife is fragmented, and the lack of international cooperation encourages individual parties to minimize their input into control. We call for international policy that acknowledges the strong links between emerging diseases and invasion risk.
Keywords	biosecurity ; ecological invasion ; emerging diseases ; humans ; international cooperation ; invasive species ; parasites ; risk ; wildlife
Language	English
Dates of publication	2015-05
Size	p. 189-199.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2036227-4
ISSN	1471-5007 ; 1471-4922
ISSN (online)	1471-5007
ISSN	1471-4922
DOI	10.1016/j.pt.2014.12.003
Database	NAL-Catalogue (AGRICOLA)

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Article: Disease emergence and invasions.

Hatcher, Melanie J / Dick, Jaimie T A / Dunn, Alison M

Functional ecology

2012 Volume 26, Issue 6, Page(s) 1275–1287

Abstract: Emerging infectious diseases (EIDs) are recognized as having significant social, economic and ecological costs, threatening human health, food security, wildlife conservation and biodiversity. We review the processes underlying the emergence of ... ...

Abstract	Emerging infectious diseases (EIDs) are recognized as having significant social, economic and ecological costs, threatening human health, food security, wildlife conservation and biodiversity. We review the processes underlying the emergence of infectious disease, focusing on the similarities and differences between conceptual models of disease emergence and biological invasions in general.Study of the IUCN's list of the world's worst invaders reveals that disease is cited as a driver behind the conservation, medical or economic impact of nearly a quarter of the species on the data base.The emergence of novel diseases in new host species are, in essence, examples of invasions by parasites. Many of the ecological and anthropogenic drivers of disease emergence and classical invasions are also shared, with environmental change and global transport providing opportunities for the introduction and spread of invaders and novel parasites.The phases of disease emergence and biological invasions have many parallels; particularly the early and late phases, where demographic and anthropogenic factors are key drivers. However, there are also differences in the intermediate phases, where host-parasite co-evolution plays a crucial role in determining parasite establishment in novel hosts.Similar opportunities and constraints on control and management occur at the different phases of invasions and disease emergence. However, exploitation of host immune responses offers additional control opportunities through contact control and vaccination against EIDs. We propose that cross-fertilization between the disciplines of disease emergence and invasion biology may provide further insights into their prediction, control and management.
Keywords	covid19
Language	English
Publishing date	2012-07-17
Publishing country	England
Document type	Journal Article
ZDB-ID	2020307-X
ISSN	1365-2435 ; 0269-8463
ISSN (online)	1365-2435
ISSN	0269-8463
DOI	10.1111/j.1365-2435.2012.02031.x
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book: Parasites in ecological communities

Hatcher, Melanie J / Dunn, Alison M

from interactions to ecosystems

(Ecology, biodiversity and conservation)

2011

Abstract: Interactions between competitors, predators and their prey have traditionally been viewed as the foundation of community structure. Parasites - long ignored in community ecology - are now recognized as playing an important part in influencing species ... ...

Author's details	Melanie J. Hatcher, Alison M. Dunn
Series title	Ecology, biodiversity and conservation
Abstract	"Interactions between competitors, predators and their prey have traditionally been viewed as the foundation of community structure. Parasites - long ignored in community ecology - are now recognized as playing an important part in influencing species interactions and consequently affecting ecosystem function. Parasitism can interact with other ecological drivers, resulting in both detrimental and beneficial effects on biodiversity and ecosystem health. Species interactions involving parasites are also key to understanding many biological invasions and emerging infectious diseases. This book bridges the gap between community ecology and epidemiology to create a wide-ranging examination of how parasites and pathogens affect all aspects of ecological communities, enabling the new generation of ecologists to include parasites as a key consideration in their studies. This comprehensive guide to a newly emerging field is of relevance to academics, practitioners and graduates in biodiversity, conservation and population management, and animal and human health"--
Keywords	Parasites/Ecology. ; Parasites/Behavior. ; Host-parasite relationships. ; Parasitology. ; Biotic communities.
Language	English
Size	xv, 445 p. :, ill., maps ;, 24 cm.
Publisher	Cambridge University Press
Publishing place	Cambridge, UK ; New York
Document type	Book
ISBN	9780521889704 ; 0521889707 ; 9780521718226 ; 0521718228
Database	NAL-Catalogue (AGRICOLA)

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Book: Parasites in ecological communities

Hatcher, Melanie J / Dunn, Alison M

from interactions to ecosystems

(Ecology, biodiversity and conservation)

2011

Author's details	Melanie J. Hatcher, Alison M. Dunn
Series title	Ecology, biodiversity and conservation
Abstract	"Interactions between competitors, predators and their prey have traditionally been viewed as the foundation of community structure. Parasites - long ignored in community ecology - are now recognized as playing an important part in influencing species interactions and consequently affecting ecosystem function. Parasitism can interact with other ecological drivers, resulting in both detrimental and beneficial effects on biodiversity and ecosystem health. Species interactions involving parasites are also key to understanding many biological invasions and emerging infectious diseases. This book bridges the gap between community ecology and epidemiology to create a wide-ranging examination of how parasites and pathogens affect all aspects of ecological communities, enabling the new generation of ecologists to include parasites as a key consideration in their studies. This comprehensive guide to a newly emerging field is of relevance to academics, practitioners and graduates in biodiversity, conservation and population management, and animal and human health"--
MeSH term(s)	Parasites ; Host-Parasite Interactions ; Ecosystem ; Biodiversity ; Parasitology/methods
Language	English
Size	xv, 445 p. :, ill., maps ;, 24 cm.
Publisher	Cambridge University Press
Publishing place	Cambridge, UK ; New York
Document type	Book
ISBN	9780521889704 ; 0521889707 ; 9780521718226 ; 0521718228
Database	Catalogue of the US National Library of Medicine (NLM)

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Book: Parasites in ecological communities

Hatcher, Melanie J / Dunn, Alison M

from interactions to ecosystems

(Ecology, biodiversity and conservation)

2011

Author's details	Melanie J. Hatcher; Alison M. Dunn
Series title	Ecology, biodiversity and conservation
Abstract	"Interactions between competitors, predators and their prey have traditionally been viewed as the foundation of community structure. Parasites - long ignored in community ecology - are now recognized as playing an important part in influencing species interactions and consequently affecting ecosystem function. Parasitism can interact with other ecological drivers, resulting in both detrimental and beneficial effects on biodiversity and ecosystem health. Species interactions involving parasites are also key to understanding many biological invasions and emerging infectious diseases. This book bridges the gap between community ecology and epidemiology to create a wide-ranging examination of how parasites and pathogens affect all aspects of ecological communities, enabling the new generation of ecologists to include parasites as a key consideration in their studies. This comprehensive guide to a newly emerging field is of relevance to academics, practitioners and graduates in biodiversity, conservation and population management, and animal and human health"--
Keywords	Biotic communities ; Host-parasite relationships ; Parasites/Behavior ; Parasites/Ecology ; Parasitology
Language	English
Size	XV, 445 S., Ill., graph. Darst., Kt.
Publisher	Cambridge Univ. Press
Publishing place	Cambridge u.a.
Document type	Book
Note	Literaturverz. S. [393] - 438
ISBN	9780521718226 ; 9780521889704 ; 0521718228 ; 0521889707
Database	Special collection on veterinary medicine and general parasitology

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Book: Parasites in ecological communities

Hatcher, Melanie J / Dunn, Alison M

from interactions to ecosystems

(Ecology, biodiversity and conservation)

2011

Author's details	Melanie J. Hatcher; Alison M. Dunn
Series title	Ecology, biodiversity and conservation
Abstract	"Interactions between competitors, predators and their prey have traditionally been viewed as the foundation of community structure. Parasites - long ignored in community ecology - are now recognized as playing an important part in influencing species interactions and consequently affecting ecosystem function. Parasitism can interact with other ecological drivers, resulting in both detrimental and beneficial effects on biodiversity and ecosystem health. Species interactions involving parasites are also key to understanding many biological invasions and emerging infectious diseases. This book bridges the gap between community ecology and epidemiology to create a wide-ranging examination of how parasites and pathogens affect all aspects of ecological communities, enabling the new generation of ecologists to include parasites as a key consideration in their studies. This comprehensive guide to a newly emerging field is of relevance to academics, practitioners and graduates in biodiversity, conservation and population management, and animal and human health"--
Keywords	Biotic communities ; Host-parasite relationships ; Parasites/Behavior ; Parasites/Ecology ; Parasitology
Language	English
Size	XV, 445 S., Ill., graph. Darst., Kt.
Publisher	Cambridge Univ. Press
Publishing place	Cambridge u.a.
Document type	Book
Note	Literaturverz. S. [393] - 438
ISBN	9780521718226 ; 9780521889704 ; 0521718228 ; 0521889707
Database	Former special subject collection: coastal and deep sea fishing

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Article ; Online: Should sex-ratio distorting parasites abandon horizontal transmission?

Ironside, Joseph E / Smith, Judith E / Hatcher, Melanie J / Dunn, Alison M

BMC evolutionary biology

2011 Volume 11, Page(s) 370

Abstract: Background: Sex-ratio distorting parasites are of interest due to their effects upon host population dynamics and their potential to influence the evolution of host sex determination systems. In theory, the ability to distort host sex-ratios allows a ... ...

Abstract	Background: Sex-ratio distorting parasites are of interest due to their effects upon host population dynamics and their potential to influence the evolution of host sex determination systems. In theory, the ability to distort host sex-ratios allows a parasite with efficient vertical (hereditary) transmission to dispense completely with horizontal (infectious) transmission. However, recent empirical studies indicate that some sex-ratio distorting parasites have retained the capability for horizontal transmission. Results: Numerical simulations using biologically realistic parameters suggest that a feminising parasite is only likely to lose the capability for horizontal transmission if its host occurs at low density and/or has a male-biased primary sex ratio. It is also demonstrated that even a small amount of horizontal transmission can allow multiple feminising parasites to coexist within a single host population. Finally it is shown that, by boosting its host's rate of population growth, a feminising parasite can increase its own horizontal transmission and allow the invasion of other, more virulent parasites. Conclusions: The prediction that sex-ratio distorting parasites are likely to retain a degree of horizontal transmission has important implications for the epidemiology and host-parasite interactions of these organisms. It may also explain the frequent co-occurrence of several sex-ratio distorting parasite species in nature.
MeSH term(s)	Animals ; Disease Transmission, Infectious ; Female ; Host-Parasite Interactions ; Infectious Disease Transmission, Vertical ; Male ; Models, Biological ; Parasites/pathogenicity ; Parasites/physiology ; Parasitic Diseases/parasitology ; Parasitic Diseases/transmission ; Population Dynamics ; Sex Ratio
Language	English
Publishing date	2011-12-21
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1471-2148
ISSN (online)	1471-2148
DOI	10.1186/1471-2148-11-370
Database	MEDical Literature Analysis and Retrieval System OnLINE

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