نتایج جستجو برای: host parasite interactions

تعداد نتایج: 602299  

Journal: :Current Biology 2011
Daizaburo Shizuka Bruce E. Lyon

The reliability of information that animals use to make decisions has fitness consequences. Accordingly, selection should favor the evolution of strategies that enhance the reliability of information used in learning and decision making. For example, hosts of avian brood parasites should be selected to increase the reliability of the information they use to learn to recognize their own eggs and...

Journal: :Journal of evolutionary biology 2004
D M Tompkins K N Mouritsen R Poulin

Parasite manipulation of host behaviour is a compelling example of the extended phenotype. However, in many cases, such manipulation may be incorrectly assumed. Previous work has demonstrated that Austrovenus stuchburyi cockles stranded on mud-flat surfaces due to an inability to re-burrow both contain significantly more metacercariae of the trematode Curtuteria australis and are predated by th...

2011
Hermien Viljoen Nigel C. Bennett Edward A. Ueckermann Heike Lutermann

The distribution of parasites among hosts is often characterised by a high degree of heterogeneity with a small number of hosts harbouring the majority of parasites. Such patterns of aggregation have been linked to variation in host exposure and susceptibility as well as parasite traits and environmental factors. Host exposure and susceptibility may differ with sexes, reproductive effort and gr...

2014
Quentin Jossart Rémi A. Wattier Chedly Kastally Serge Aron Bruno David Chantal De Ridder Thierry Rigaud

Mating systems are diverse in animals, notably in crustaceans, but can be inferred from a limited set of parameters. Baeza and Thiel (2007) proposed a model predicting mating systems of symbiotic crustaceans with three host characteristics and the risk of predation. These authors proposed five mating systems, ranging from monogamy to polygynandry (where multiple mating occurs for both genders)....

Journal: :International journal for parasitology 2007
Robert Poulin Mario George-Nascimento

The selective pressure exerted by parasites on their hosts will to a large extent be influenced by the abundance or biomass of parasites supported by the hosts. Predicting how much parasite biomass can be supported by host individuals or populations should be straightforward: ultimately, parasite biomass must be controlled by resource supply, which is a direct function of host metabolism. Using...

2015
Leanne G. Hancock Sally E. Walker Alberto Pérez-Huerta Samuel S. Bowser Geerat J. Vermeij

We studied the population dynamics and parasite load of the foraminifer Cibicides antarcticus on its host the Antarctic scallop Adamussium colbecki from three localities differing by sea ice cover within western McMurdo Sound, Ross Sea, Antarctica: Explorers Cove, Bay of Sails and Herbertson Glacier. We also estimated CaCO3 biomass and annual production for both species. Cibicides populations v...

Journal: :Parasitology international 2007
Kate S Hutson Ingo Ernst Allan J Mooney Ian D Whittington

Yellowtail kingfish, Seriola lalandi support significant commercial and recreational fisheries as well as aquaculture operations throughout the world. Metazoan parasite infections of S. lalandi are of considerable economic and ecological importance, yet very little is known about wild parasite assemblages. S. lalandi were collected from the east coast and south coast of Australia and examined f...

Journal: :Memorias do Instituto Oswaldo Cruz 2004
Nubia E Matta Natalia Basto Rafael Gutierrez Oscar A Rodríguez Ellis C Greiner

Blood samples from 159 birds of the New-world family Tyrannidae (the flycatchers) from the eastern plains of Colombia, were examined for haematozoa parasites, in 1999-2000. Haematozoa were detected in six of 20 species. The overall prevalence was 10.1%. The most common parasites detected were microfilariae, followed by Trypanosoma and Plasmodium. The highest prevalence (9.6%) was found in the O...

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