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Artykuły w czasopismach na temat „Ecologie parasite”

Autor: Grafiati

Data publikacji: 5 października 2024

Data aktualizacji: 31 lipca 2025

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1

MUÑOZ, G., A. S. GRUTTER, and T. H. CRIBB. "Endoparasite communities of five fish species (Labridae: Cheilininae) from Lizard Island: how important is the ecology and phylogeny of the hosts?" Parasitology 132, no. 3 (2005): 363–74. http://dx.doi.org/10.1017/s0031182005009133.

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The parasite community of animals is generally influenced by host physiology, ecology, and phylogeny. Therefore, sympatric and phylogenetically related hosts with similar ecologies should have similar parasite communities. To test this hypothesis we surveyed the endoparasites of 5 closely related cheilinine fishes (Labridae) from the Great Barrier Reef. They were Cheilinus chlorourus, C. trilobatus, C. fasciatus, Epibulus insidiator and Oxycheilinus diagramma. We examined the relationship between parasitological variables (richness, abundance and diversity) and host characteristics (body weigh

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Marques, Livia Castro, and Dimitri Ramos Alves. "Ecologia da comunidade de metazoários parasitos do dourado, Coryphaena hippurus Linnaeus, 1758, (Osteichthyes: Coryphaenidae) do litoral do Estado do Rio de Janeiro, Brasil." Cadernos UniFOA 6, no. 16 (2017): 111. http://dx.doi.org/10.47385/cadunifoa.v6i16.1070.

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From April 2009 and July 2010, 68 specimens of common dolphinfish Coryphaena hippurus Linnaeus, 1758 (Osteichthyes: Coryphaenidae) collected from coast of the state of Rio de Janeiro (21-23° S, 41-45° W), were necropsied to study their infracommunities of metazoan parasites. Seventeen species of metazoan parasites were collected. All fish were parasitized by one or more metazoan. The digeneans were the majority of the specimens collected, with 90.7%. Dinurus tornatus (Rudolphi, 1819) was the dominant species with highest abundance, prevalence, frequency of dominance and mean relative dominance

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Marques, Livia Castro, and Dimitri Ramos Alves. "Ecologia da comunidade de metazoários parasitos do dourado, Coryphaena hippurus Linnaeus, 1758, (Osteichthyes: Coryphaenidae) do litoral do Estado do Rio de Janeiro, Brasil." Cadernos UniFOA 6, no. 16 (2017): 111–22. http://dx.doi.org/10.47385/cadunifoa.v6.n16.1070.

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From April 2009 and July 2010, 68 specimens of common dolphinfish Coryphaena hippurus Linnaeus, 1758 (Osteichthyes: Coryphaenidae) collected from coast of the state of Rio de Janeiro (21-23° S, 41-45° W), were necropsied to study their infracommunities of metazoan parasites. Seventeen species of metazoan parasites were collected. All fish were parasitized by one or more metazoan. The digeneans were the majority of the specimens collected, with 90.7%. Dinurus tornatus (Rudolphi, 1819) was the dominant species with highest abundance, prevalence, frequency of dominance and mean relative dominance

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Claar, Danielle C., Armand Kuris, Katie L. Leslie, Rachel L. Welicky, Maureen A. Williams, and Chelsea L. Wood. "Parasite Biodiversity." Lessons in Conservation 11 (2021): 39–57. https://doi.org/10.5531/cbc.linc.11.1.5.

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A parasite is an organism that lives in an intimate and durable relationship with its host and imposes a cost on that host, in terms of its ability to survive, grow, and/or reproduce. Despite the fact that more than 40% of animal species are parasites, parasitism is rarely discussed in introductory biology courses. This may be because parasites are often hidden within their hosts—and therefore easy to ignore. But parasites have important roles to play in ecosystems and we ignore them at our own peril. In this module, students have the opportunity to discover the hidden world of parasites: they

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Hernandez-Caballero, Irene, Luz Garcia-Longoria, Ivan Gomez-Mestre, and Alfonso Marzal. "The Adaptive Host Manipulation Hypothesis: Parasites Modify the Behaviour, Morphology, and Physiology of Amphibians." Diversity 14, no. 9 (2022): 739. http://dx.doi.org/10.3390/d14090739.

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Parasites have evolved different strategies to increase their transmission from one host to another. The Adaptive Host Manipulation hypothesis states that parasites induce modifications of host phenotypes that could maximise parasite fitness. There are numerous examples of parasite manipulation across a wide range of host and parasite taxa. However, the number of studies exploring the manipulative effects of parasites on amphibians is still scarce. Herein, we extensively review the current knowledge on phenotypic alterations in amphibians following parasite infection. Outcomes from different s

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Paterson, Rachel A., Gustavo P. Viozzi, Carlos A. Rauque, Verónica R. Flores, and Robert Poulin. "A Global Assessment of Parasite Diversity in Galaxiid Fishes." Diversity 13, no. 1 (2021): 27. http://dx.doi.org/10.3390/d13010027.

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Free-living species often receive greater conservation attention than the parasites they support, with parasite conservation often being hindered by a lack of parasite biodiversity knowledge. This study aimed to determine the current state of knowledge regarding parasites of the Southern Hemisphere freshwater fish family Galaxiidae, in order to identify knowledge gaps to focus future research attention. Specifically, we assessed how galaxiid–parasite knowledge differs among geographic regions in relation to research effort (i.e., number of studies or fish individuals examined, extent of tissue

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Sobecka, Ewa, Ewa Łuczak, Beata Więcaszek, and Artur Antoszek. "Parasite community structure of cod from Bear Island (Barents Sea) and Pomeranian Bay (Baltic Sea)." Polish Polar Research 32, no. 3 (2011): 253–62. http://dx.doi.org/10.2478/v10183-011-0016-6.

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Parasite community structure of cod from Bear Island (Barents Sea) and Pomeranian Bay (Baltic Sea) A total of 142 cods: 60 from the South-East Ground of Bear Island and 82 from the Pomeranian Bay (Baltic Sea) were examined for their ecto- and endoparasites. Twenty different parasite species, comprising one Myxosporea, three Cestoda, four Digenea, seven Nematoda, three Acanthocephala and two Crustacea were found. The parasite component communities comprised 1446 individuals (17 species, six higher taxa) from the Bear Island and 6588 individuals (nine species, three higher taxa) from Pomeranian

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Weatherhead, Patrick J., and Gordon F. Bennett. "Ecology of Red-winged Blackbird parasitism by haematozoa." Canadian Journal of Zoology 69, no. 9 (1991): 2352–59. http://dx.doi.org/10.1139/z91-331.

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We sampled haematozoa in Red-winged Blackbirds (Agelaius phoeniceus) over three consecutive breeding seasons in eastern Ontario to identify factors that affect the reliability of quantifying parasites as this pertains to testing Hamilton and Zuk's hypothesis of sexual selection. Parasite prevalence and intensity varied seasonally, indicating that for samples to be reliable they should not be taken either early or late in the breeding season, and analysis should be limited to prevalence (presence versus absence). Among males (but not females), parasite prevalence increased with age, indicating

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9

Wolinska, Justyna, Sabine Giessler, and Henrike Koerner. "Molecular Identification and Hidden Diversity of Novel Daphnia Parasites from European Lakes." Applied and Environmental Microbiology 75, no. 22 (2009): 7051–59. http://dx.doi.org/10.1128/aem.01306-09.

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ABSTRACT Parasites play important roles in local population dynamics and genetic structure. However, due to insufficient diagnostic tools, detailed host-parasite interactions may remain concealed by hidden parasite diversity in natural systems. Microscopic examination of 19 European lake Daphnia populations revealed the presence of three groups of parasites: fungi, microsporidia, and oomycetes. For most of these parasites no genetic markers have been described so far. Based on sequence similarities of the nuclear small-subunit and internal transcribed spacer (ITS) rRNA gene regions, one fungus

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10

Robar, Nicholas, Dennis L. Murray, and Gary Burness. "Effects of parasites on host energy expenditure: the resting metabolic rate stalemate." Canadian Journal of Zoology 89, no. 11 (2011): 1146–55. http://dx.doi.org/10.1139/z11-084.

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Detrimental effects of parasitism on host fitness are frequently attributed to parasite-associated perturbations to host energy budgets. It has therefore been widely hypothesized that energetic costs of infection may be manifest as changes in host resting metabolic rate (RMR). Attempts to quantify these effects have yielded contradictory results across host–parasite systems. We used a meta-analysis of the literature to test the effects of parasites on mass-specific (n = 22) and whole-body (n = 15) host RMR. Parasites resulted in a qualitative increase in host RMR in the majority of studies; ho

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11

Vermeulen, Elke T., Michelle L. Power, David A. Nipperess, Ian Beveridge, and Mark D. B. Eldridge. "Biodiversity of parasite assemblages in the genus Petrogale and its relation to the phylogeny and biogeography of their hosts." Australian Journal of Zoology 64, no. 1 (2016): 61. http://dx.doi.org/10.1071/zo16023.

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Parasites form an integral part of overall biodiversity although they are often overlooked in conservation management, where emphasis is primarily directed towards the host. Parasites are often highly specialised to particular hosts, and thus may be just as threatened as the host they inhabit. For many of Australia’s wildlife species, little is known about their associated parasite communities. To begin to address this knowledge gap, we documented the parasite fauna described in the genetically diverse marsupial genus Petrogale, which contains seven species of conservation concern. The literat

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12

Blackmore, Mark S. "Host effects on Romanomermis (Nematoda: Mermithidae) parasites of snowpool Aedes mosquitoes (Diptera: Culicidae)." Canadian Journal of Zoology 70, no. 10 (1992): 2015–20. http://dx.doi.org/10.1139/z92-272.

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Host effects on mermithid nematodes (Romanomermis sp.) were studied in four populations of snowpool Aedes spp. mosquitoes (Diptera: Culicidae) in western Wyoming. Two factors associated with nematode fitness, survival and adult size, were examined in relation to species and parasite load of the hosts. The proportion of entering parasites that successfully emerged from hosts was relatively high in Aedes impiger, Aedes increpitus, Aedes pullatus, and Aedes punctor, none of which produced melanotic encapsulations of parasites. Emergence success at all localities was lowest in Aedes nevadensis and

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13

Owolabi, Alíz T. Y., Sarah E. Reece, and Petra Schneider. "Daily rhythms of both host and parasite affect antimalarial drug efficacy." Evolution, Medicine, and Public Health 9, no. 1 (2021): 208–19. http://dx.doi.org/10.1093/emph/eoab013.

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ABSTRACT Background and objectives Circadian rhythms contribute to treatment efficacy in several non-communicable diseases. However, chronotherapy (administering drugs at a particular time-of-day) against infectious diseases has been overlooked. Yet, the daily rhythms of both hosts and disease-causing agents can impact the efficacy of drug treatment. We use the rodent malaria parasite Plasmodium chabaudi, to test whether the daily rhythms of hosts, parasites and their interactions affect sensitivity to the key antimalarial, artemisinin. Methodology Asexual malaria parasites develop rhythmicall

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14

Dubois, Nicole, Pierre Magnan, and David J. Marcogliese. "Effects of the introduction of white sucker, Catostomus commersoni, on the parasite fauna of brook trout, Salvelinus fontinalis." Canadian Journal of Zoology 74, no. 7 (1996): 1304–12. http://dx.doi.org/10.1139/z96-146.

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White sucker, Catostomus commersoni, has been introduced in many brook trout, Salvelinus fontinalis, lakes of the Laurentian Shield, Quebec, Canada. The goal of this study was to assess the impact of these introductions on the parasite fauna of brook trout. Three lakes containing brook trout only and three lakes containing both brook trout and white sucker were studied. The objectives were (i) to determine if white sucker parasites were able to colonise the relatively oligotrophic lakes of the Laurentian Shield, (ii) to establish if parasites were exchanged between sucker and trout, and (iii)

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15

OWEN, IFOR L. "Parasites of animals in Papua New Guinea recorded at the National Veterinary Laboratory: a catalogue, historical review and zoogeographical affiliations." Zootaxa 3143, no. 1 (2011): 1. http://dx.doi.org/10.11646/zootaxa.3143.1.1.

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The catalogue includes more than 700 parasites of domestic and wild animals recorded at the National Veterinary Laboratory, Papua New Guinea, since data began to be gathered at the end of World War 2. It incorporates some information already published and data on parasites, particularly of indigenous fauna, not recorded previously in the country. Wildlife host species include wild pig, deer, bats, murine rodents, marsupials, monotremes, birds, reptiles, amphibians, fishes and invertebrates. The range of parasites in domestic and many wild animals shows great affinity with that found in Austral

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Befus, A. Dean, Derek Wakelin, and Edward Arnold. "Immunity to Parasites: How Animals Control Parasite Infections." Journal of Parasitology 71, no. 3 (1985): 364. http://dx.doi.org/10.2307/3282019.

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Ilmain, Juliana K., and Catherine L. Searle. "The effects of parasite exposure on mortality from aquatic contaminants, carbaryl and elevated salinity, in a freshwater crustacean." Journal of Plankton Research 42, no. 3 (2020): 394–97. http://dx.doi.org/10.1093/plankt/fbaa023.

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Abstract Freshwater pollution is a major global concern. Common methods for determining the effects of contaminants on freshwater organisms involve short-term laboratory experiments with otherwise healthy organisms. However, in natural systems, organisms are commonly exposed to parasites, which could alter their ability to survive exposure to aquatic contamination. We used a freshwater crustacean (Daphnia dentifera) to quantify the effects of parasite exposure on mortality from two common freshwater contaminants (elevated salinity [NaCl] and carbaryl). In our salinity trial, both parasite expo

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Blaylock, R. B., J. C. Holmes, and L. Margolis. "The parasites of Pacific halibut (Hippoglossus stenolepis) in the eastern North Pacific: host-level influences." Canadian Journal of Zoology 76, no. 3 (1998): 536–47. http://dx.doi.org/10.1139/z97-214.

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Fifty-nine metazoan parasite taxa were identified from 536 Pacific halibut (Hippoglossus stenolepis) of three size classes (recruits (<10 cm), juveniles (10-55 cm), and subadults/adults (55-102 cm)). Pacific halibut harbor parasite communities that are among the richest and most abundant found in those marine fishes studied to date. The parasites are largely host generalists, being found in a wide variety of marine fishes. These three features appear to be due, in part, to the interplay of the large size, wide diet, extensive mobility, and long life-span of halibut, plus the lack of specifi

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Bayou, Kibruyesfa, Getachew Terefe, and Bersissa Kumsa. "Epidemiology of gastrointestinal parasites of dogs in four districts of central Ethiopia: Prevalence and risk factors." PLOS ONE 20, no. 1 (2025): e0316539. https://doi.org/10.1371/journal.pone.0316539.

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From February 2022 to April 2023, a cross-sectional study on dog gastrointestinal parasites was conducted in Bishoftu, Dukem, Addis Ababa, and Sheno, Central Ethiopia, with the aim of estimating the prevalence and evaluating risk factors. A total of 701 faecal samples were collected and processed using floatation and McMaster techniques. In dogs that were investigated, the overall prevalence of gastrointestinal parasites was 53.1% (372/701). Nematode (28.2%), cestode (8.4%), and protozoan (5.6%) parasite infections were detected in dogs in both single (42.2%) and combined (10.8%) infections. W

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Holmstad, Per R., and Arne Skorping. "Covariation of parasite intensities in willow ptarmigan, Lagopus lagopus L." Canadian Journal of Zoology 76, no. 8 (1998): 1581–88. http://dx.doi.org/10.1139/z98-092.

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The distribution of parasites in individual willow ptarmigan (Lagopus lagopus) hosts and associations between parasite numbers were used to investigate whether host susceptibility, in addition to factors associated with exposure, may have influenced the patterns of infection. Eight species of parasites were found, Trichostrongylus tenuis, Capillaria caudinflata, Splendidofilaria papillocerca, Hymenolepis microps, Paroniella urogalli, Leucocytozoon lovati, Eimeria sp., and Trypanosoma sp., in addition to microfilariae. Frequency distributions of all but one of these parasite species were overdi

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Ramey, A. M., J. A. Reed, J. A. Schmutz, et al. "Prevalence, transmission, and genetic diversity of blood parasites infecting tundra-nesting geese in Alaska." Canadian Journal of Zoology 92, no. 8 (2014): 699–706. http://dx.doi.org/10.1139/cjz-2014-0041.

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A total of 842 blood samples collected from five species of tundra-nesting geese in Alaska was screened for haemosporidian parasites using molecular techniques. Parasites of the genera Leucocytozoon Danilewsky, 1890, Haemoproteus Kruse, 1890, and Plasmodium Marchiafava and Celli, 1885 were detected in 169 (20%), 3 (<1%), and 0 (0%) samples, respectively. Occupancy modeling was used to estimate prevalence of Leucocytozoon parasites and assess variation relative to species, age, sex, geographic area, year, and decade. Species, age, and decade were identified as important in explaining differe

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Dawson, Russell D., and Gary R. Bortolotti. "Prevalence and intensity of hematozoan infections in a population of American kestrels." Canadian Journal of Zoology 77, no. 1 (1999): 162–70. http://dx.doi.org/10.1139/z98-206.

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Interest in hematozoan parasites has been considerable in recent years, mostly as a result of Hamilton and Zuk's idea that parasites influence the expression of sexually selected traits. However, little is known about the basic patterns of parasitism and the dynamics of host-parasite relationships. We describe the patterns of blood parasitism in American kestrels (Falco sparverius) sampled throughout the breeding seasons of 1994 and 1995, and investigate the influence of several variables on parasite load. Parasite prevalences in kestrels were high, ranging from 75 to 94% depending on the sex

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Catalano, Sarah R., Kate S. Hutson, Rodney M. Ratcliff, and Ian D. Whittington. "The value of host and parasite identification for arripid fish." Marine and Freshwater Research 62, no. 1 (2011): 72. http://dx.doi.org/10.1071/mf10193.

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Accurate identification of fishes and their parasites is fundamental to the development, management and sustainability of fisheries and aquaculture worldwide. We examined three commercially and recreationally exploited Australian arripid species (Pisces: Arripidae), namely Australian herring (Arripis georgianus), eastern Australian salmon (A. trutta) and western Australian salmon (A. truttaceus), to determine their metazoan parasite assemblages and infection parameters. We identified 49 parasite species including 35 new parasite–host records and recognised seven ambiguous parasite–host records

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Watkins, H. V., and G. Blouin-Demers. "Body size, not age, predicts parasite load in Clark’s Spiny Lizards (Sceloporus clarkii)." Canadian Journal of Zoology 97, no. 3 (2019): 220–24. http://dx.doi.org/10.1139/cjz-2017-0328.

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Determining the factors that influence parasite load is a fundamental goal of parasitology. Body size often influences parasite load in reptiles, but it is unclear whether higher levels of parasitism are a result of greater surface area of individuals (a function of size) or of longer periods of exposure to parasites (a function of age). Using skeletochronology in a wild population of Clark’s Spiny Lizards (Sceloporus clarkii Baird and Girard, 1852), we tested the hypotheses that (i) larger individuals have higher parasite loads due to increased surface area available for colonization by paras

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Žiegytė, Rita, Vaidas Palinauskas, and Rasa Bernotienė. "Natural Vector of Avian Haemoproteus asymmetricus Parasite and Factors Altering the Spread of Infection." Insects 14, no. 12 (2023): 926. http://dx.doi.org/10.3390/insects14120926.

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Avian haemosporidians (Apicomplexa, Haemosporida) are widespread blood protists, often causing severe haemosporidiosis, pathology, or even mortality in their hosts. Migrant birds regularly bring various haemosporidian parasites from wintering grounds to European breeding areas. Some haemosporidian parasites are prevalent in breeding sites and complete their life cycles in temperate climate zones and can be transmitted, but others do not. The factors altering the spread of these haemosporidians are not fully understood. Culicoides biting midges (Diptera: Ceratopogonidae) play an important role

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Ruano, F., O. Sanllorente, A. Lenoir, and A. Tinaut. "Rossomyrmex, the Slave-Maker Ants from the Arid Steppe Environments." Psyche: A Journal of Entomology 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/541804.

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The host-parasite generaProformica-Rossomyrmexpresent four pairs of species with a very wide range of distribution from China to Southeastern Spain, from huge extended plains to the top of high mountains. Here we review (1) the published data on these pairs in comparison to other slave-makers; (2) the different dispersal ability in hosts and parasites inferred from genetics (chance of migration conditions the evolutionary potential of the species); (3) the evolutionary potential of host and parasite determining the coevolutionary process in each host-parasite system that we treat to define usi

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Krasnovyd, V., Yu Kvach, and O. Drobiniak. "The Parasite Fauna of the Gobiid Fish (Actinopterygii, Gobiidae) in the Sukhyi Lyman, Black Sea." Vestnik Zoologii 46, no. 6 (2012): 1–8. http://dx.doi.org/10.2478/v10058-012-0041-x.

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Abstract The parasite fauna of gobiid fish of the Sukhyi Lyman, Black Sea, is described. Seventeen species of parasites are registered in the gobiids in the water body. The marine tubenose goby Proterorhinus marmoratus has the richest parasite fauna (12 species), the grass goby Zosterisessor ophiocephalus has the fewest number of parasite species (5 species). The microsporidian Loma sp. and ciliate Trichodina domerguei are recorded for the first time for gobiids in the north-western Black Sea. The core of the parasite fauna is formed by metacercariae Cryptocotyle spp. The core, secondary, sate

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Webley, L. S., I. Beveridge, and G. Coulson. "Endoparasites of an insular subspecies of the western grey kangaroo, Macropus fuliginosus." Australian Journal of Zoology 52, no. 6 (2004): 623. http://dx.doi.org/10.1071/zo04011.

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This study examined parasites occurring in the insular subspecies of the western grey kangaroo, Macropus fuliginosus fuliginosus, from Kangaroo Island. A total of 25 kangaroos from three sites were examined for gastrointestinal parasites. Fifteen parasite species were identified: eight in the stomach, five in the small intestine and two in the large intestine. Parasite prevalence showed a bimodal distribution: 'satellite' species were predominantly cestodes, whereas 'core' species were nematodes. There was no evidence of co-speciation in the 12 parasite species occurring in both island and mai

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Yan, Guiyun. "Consequences of larval tapeworm infection for the fitness of the intermediate hosts, flour beetles (Tribolium spp.)." Canadian Journal of Zoology 75, no. 2 (1997): 271–79. http://dx.doi.org/10.1139/z97-034.

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The problem of the effect of parasites on the fitness of their hosts is central to understanding the ecological and evolutionary consequences of parasitism. This study examined the consequences of infection with a tapeworm parasite, Hymenolepis diminuta, on the fitness of its intermediate hosts, Tribolium castaneum and T. confusum, and the correlation between host fitness and infection intensity. Fitness was measured as the proportion of offspring contributed by a focal individual in a test population, using beetle body colors as genetic markers. Thus, this fitness measurement estimated the ov

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JUSTINE, JEAN-LOU, IAN BEVERIDGE, GEOFFREY A. BOXSHALL, ROD A. BRAY, FRANTIŠEK MORAVEC, and IAN D. WHITTINGTON. "An annotated list of fish parasites (Copepoda, Monogenea, Digenea, Cestoda and Nematoda) collected from Emperors and Emperor Bream (Lethrinidae) in New Caledonia further highlights parasite biodiversity estimates on coral reef fish." Zootaxa 2691, no. 1 (2010): 1. http://dx.doi.org/10.11646/zootaxa.2691.1.1.

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Parasites were collected from 17 species of emperors and emperor bream (Lethrinidae) in the waters off New Caledonia, South Pacific. Host-parasite and parasite-hosts lists are provided, with a total of 188 host-parasite combinations (11 per fish species), including 81 identifications at the species level. A total of 52 parasites were identified at the species level, and 40 new host records were found. Results are presented for larval isopods, copepods (16 species), monogeneans (24), digeneans (27), cestodes (11) and nematodes (10). When results were restricted to the four best-sampled fish spe

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Anderson, Warwick. "Postcolonial Ecologies of Parasite and Host: Making Parasitism Cosmopolitan." Journal of the History of Biology 49, no. 2 (2016): 241–59. http://dx.doi.org/10.1007/s10739-015-9407-6.

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Stjernman, M., L. Råberg, and J. Å. Nilsson. "Long-term effects of nestling condition on blood parasite resistance in blue tits (Cyanistes caeruleus)." Canadian Journal of Zoology 86, no. 9 (2008): 937–46. http://dx.doi.org/10.1139/z08-071.

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Little is know about whether the conditions experienced during ontogeny affect resistance to parasites later in life in wild animals. Here, we used a population of blue tits ( Cyanistes caeruleus (L., 1758)) to investigate to what extent conditions experienced during the nestling stage could explain the ability to control blood parasite ( Haemoproteus majoris (Laveran, 1902)) infections 1 year later. Although short-term effects may be expected based on the well-known sensitivity of the immune system to current conditions, it is less known whether this translates into a permanent alteration of

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Knudsen, Rune, and Anders Klemetsen. "Infections of Diphyllobothrium dendriticum, D. ditremum (Cestoda), and Cystidicola farionis (Nematoda) in a north Norwegian population of Arctic charr (Salvelinus alpinus) during winter." Canadian Journal of Zoology 72, no. 11 (1994): 1922–30. http://dx.doi.org/10.1139/z94-261.

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Infections of the parasites Diphyllobothrium dendriticum, Diphyllobothrium ditremum, and Cystidicola farionis in Arctic charr (Salvelinus alpinus) from Takvatn, northern Norway, were followed throughout a 9-month overwintering period. The relative density of all three parasite species increased with the age of the host in response to ontogenetic shifts in habitat and food of Arctic charr in the lake. Our results indicate that some recruitment of the three parasite species, particularly D. ditremum, takes place during the winter. However, winter parasite recruitment was lower than in the ice-fr

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Pinilla-Gallego, Mario S., Emma E. Williams, Abby Davis, Jacquelyn L. Fitzgerald, Scott H. McArt, and Rebecca E. Irwin. "Within-Colony Transmission of Microsporidian and Trypanosomatid Parasites in Honey Bee and Bumble Bee Colonies." Environmental Entomology 49, no. 6 (2020): 1393–401. http://dx.doi.org/10.1093/ee/nvaa112.

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Abstract Parasites are commonly cited as one of the causes of population declines for both managed and wild bees. Epidemiological models sometimes assume that increasing the proportion of infected individuals in a group should increase transmission. However, social insects exhibit behaviors and traits which can dampen the link between parasite pressure and disease spread. Understanding patterns of parasite transmission within colonies of social bees has important implications for how to control diseases within those colonies, and potentially the broader pollinator community. We used bumble bee

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Bennett, Shannon N., Martin L. Adamson, and Leo Margolis. "Long-term changes in parasites of sockeye salmon (Oncorhynchus nerka) smolts." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 4 (1998): 977–86. http://dx.doi.org/10.1139/f97-295.

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Parasites were examined in 41 annual samples of sockeye salmon (Oncorhynchus nerka) juveniles originating from lakes in British Columbia: Chilko and Shuswap. Nine species of parasitic helminths and two species of parasitic Crustacea were recovered from various organs. The number of species ranged from three to nine per year. Most (94%) parasites belonged to three tapeworm species, identified as core to the parasite community because they also infected the most hosts. Two of these cestode species are probably maintained by resident freshwater hosts in the lakes. Positive numerical associations

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Carbayo, J., J. Martín, and E. Civantos. "Habitat type influences parasite load in Algerian Psammodromus (Psammodromus algirus) lizards." Canadian Journal of Zoology 97, no. 2 (2019): 172–80. http://dx.doi.org/10.1139/cjz-2018-0145.

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Understanding how habitat type and deterioration may affect parasitism is important in assessing the effects of human-induced environmental change on host–parasite dynamics. In this study, we examined inter-population differences in parasite load in the Mediterranean lizard Psammodromus algirus (Linnaeus, 1758). We analyzed prevalence and intensity of infection by blood parasites and ectoparasites in two populations separated by a 400 m elevational gradient and with different habitat types that also differed in the degree of human alteration. We also compared data obtained from the same popula

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Lienhard, Andrea, Lea Mirwald, Thomas Hötzl, Ilse Kranner, and Gerald Kastberger. "Trade-Off between Foraging Activity and Infestation by Nest Parasites in the Primitively Eusocial BeeHalictus scabiosae." Psyche: A Journal of Entomology 2010 (2010): 1–13. http://dx.doi.org/10.1155/2010/707501.

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Diurnal activities ofHalictus scabiosaebees and their nest parasites (major bee-flies, cuckoo wasps, ichneumon wasps,Sphecodesbees, and velvet ants) were investigated at a study site with 159 nests in Eastern Austria. Foraging activity correlated with ambient temperature only before midday and decreased in the afternoon. The activity of nest-infesting parasites increased during the day and correlated with ambient temperature. The match factorfmbetween the ratios of the foraging activities ofH. scabiosaeand the ratios of aspects of morning temperature was assessed on three consecutive days with

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González-Gómez, MP, L. Ovalle, C. Spinetto, et al. "Experimental transmission of Caligus rogercresseyi between two different fish species." Diseases of Aquatic Organisms 141 (September 24, 2020): 127–38. http://dx.doi.org/10.3354/dao03513.

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Caligus rogercresseyi is the dominant sea louse parasite affecting the salmon and trout industry in southern Chile. This parasite has a wide range of native and endemic fish hosts. The Patagonian blenny Eleginops maclovinus, which is parasitized mostly by the caligid species Lepeophtheirus spp. and C. rogercresseyi, is presumably responsible for the transmission of C. rogercresseyi to salmonids. The aim of this study was to characterize the transmission of parasites between different fish species and parasite cohort development under laboratory conditions. Parasite abundances and intensities w

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Bears, Heather. "Parasite Prevalence in Dark-eyed Juncos, Junco hyemalis, Breeding at Different Elevations." Canadian Field-Naturalist 118, no. 2 (2004): 235. http://dx.doi.org/10.22621/cfn.v118i2.919.

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During the summer of 2001, Dark-eyed Juncos (Junco hyemalis) were captured within the lowest (1000 m above sea level) and highest (2000 m asl) elevation extremes of their breeding range in Jasper National Park, Alberta. Blood samples were taken to identify parasite genera, and to test for differences in parasite prevalence among elevations. The most common parasites at either elevation were Haemoproteus spp., Leucocytozoon spp., and Trypanosoma spp. A significantly higher proportion of low- compared to high-elevation birds was infected by at least one of these, supporting the prediction that h

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Rubtsova, N. Yu, and Yu K. Kutsokon. "First Note on Fish Parasites in Polissky Nature Reserve, Northern Ukraine." Vestnik Zoologii 52, no. 1 (2018): 53–58. http://dx.doi.org/10.2478/vzoo-2018-0007.

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Abstract Nineteen species of parasites belonging to seven taxonomical groups were detected in nine species of fish (Gobio gobio (Linnaeus, 1758), Cobitis taenia Linnaeus, 1758, Squalius cephalus (Linnaeus, 1758), Rutilus rutilus (Linnaeus, 1758), Misgurnus fossilis (Linnaeus, 1758), Sabanejewia baltica Witkowski, 1994, Barbatula barbatula (Linnaeus, 1758), Esox lucius Linnaeus, 1758 and Perca fluviatilis Linnaeus, 1758) from two small rivers in Polissky Nature Reserve in the northern part of Ukraine. Th e highest species richness of parasites was registered for G. gobio (7 species). Four speci

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VIOLANTE-GONZÁLEZ, JUAN, and M. LEOPOLDINA AGUIRRE-MACEDO. "Metazoan parasites of fishes from Coyuca Lagoon, Guerrero, Mexico." Zootaxa 1531, no. 1 (2007): 39–48. http://dx.doi.org/10.11646/zootaxa.1531.1.3.

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A total of 33 species of metazoan parasites were identified (31 helminth and 2 crustaceans) from 10 species of fish (n = 1,030) collected from Coyuca Lagoon, Guerrero, Mexico, between May 2001 and February 2003. Digeneans (7 adults and 11 larvae) dominated the parasite fauna. The most widespread species of parasite were: Digenea- Pseudoacanthostomum panamense, Diplostomum (Austrodiplostomum) compactum, Clinostomum complanatum; Nematoda- Contracaecum sp.; Branchiura- Argulus sp.; and Copepoda- Ergasilus sp. Species composition of the parasite fauna exhibited a clear freshwater influence; 57.5%

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Marcogliese, David J. "Implications of climate change for parasitism of animals in the aquatic environment." Canadian Journal of Zoology 79, no. 8 (2001): 1331–52. http://dx.doi.org/10.1139/z01-067.

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Climate change can occur over evolutionary and ecological time scales as a result of natural and anthropogenic causes. Considerable attention has been focused in recent years on the biological consequences of global warming. However, aside from studies on those deleterious parasites that cause disease in man, little effort has been dedicated to understanding the potential changes in the parasite fauna of animal populations, especially those in aquatic systems. Predictions using General Circulation Models, among others, are examined in terms of their consequences for parasite populations in fre

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Tomalak, Marek, Harold E. Welch, and Terry D. Galloway. "EFFECTS OF CROWDING ON SUPLHURETYLENCHUS SPP. (NEMATODA: ALLANTONEMATIDAE) IN THE HAEMOCOEL OF THEIR BARK BEETLE HOSTS (COLEOPTERA: SCOLYTIDAE)." Canadian Entomologist 121, no. 9 (1989): 821–22. http://dx.doi.org/10.4039/ent121821-9.

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Nematode parasites of bark beetles are taxonomically diverse, and may, in some cases, cause serious pathological and behavioural changes in their hosts (Kaya 1984). Their potential as biological control agents has long been recognized, but to date there is a shortage of elementary information on host-parasite interactions. Though the effects of superparasitism and subsequent crowding on the parasite have been studied for some mermithids (Petersen 1972) and steinernematids (Sandner and Stanuszek 1971), no such observations have been reported for bark beetle parasites. During a survey of nematod

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Blakeslee, AMH, RB Barnard, K. Matheson, and CH McKenzie. "Host-switching among crabs: species introduction results in a new target host for native parasites." Marine Ecology Progress Series 636 (February 20, 2020): 91–106. http://dx.doi.org/10.3354/meps13214.

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Invasive species can introduce parasites to, and/or acquire new parasites from, novel regions, thereby greatly influencing community interactions, including symbiotic relationships involving parasites. Host-switching of native and non-native parasites could enhance or dilute parasite transmission and spread among hosts. We investigated the effect of host invasion on trematode parasitism in 2 Newfoundland (Canada) bays: one invaded by European green crabs Carcinus maenas and the other not yet invaded. To determine the influence of C. maenas on host-parasite relationships, we assessed trematode

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Chen, Daniella Harumi, Luanda Pereira Soares, and Mutue Toyota Fujii. "Molecular and morphological reappraisal of Spyridiocolax capixabus (Spyridiaceae, Rhodophyta), a rare endemic parasite from Brazil." Botanica Marina 62, no. 4 (2019): 345–53. http://dx.doi.org/10.1515/bot-2018-0089.

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Abstract The monotypic red algal parasite genus Spyridiocolax was proposed from material from the coast of Espírito Santo to accommodate Spyridiocolax capixabus, endemic from Brazil. The species is rare, and we performed a morphological reappraisal and the first molecular characterization of S. capixabus. Parasite specimens growing on Spyridia clavata were collected in the type locality, Itaoca Beach, Espírito Santo. Spyridiocolax capixabus forms colorless warts on the branches of S. clavata, and the secondary pit connections were described for the first time. Male, female and tetrasporophytic

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Moreno-Rueda, Gregorio. "Elevational Patterns of Blowfly Parasitism in Two Hole Nesting Avian Species." Diversity 13, no. 11 (2021): 591. http://dx.doi.org/10.3390/d13110591.

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Climate change is predicted to cause shifts in parasite distributions, leading to encounters with new hosts. Mountains offer a natural experimental background to study how parasite distributions vary across climatic gradients. Parasite abundance is generally assumed to decrease with ascending elevation, as colder climates may preclude several parasites to complete their life cycles. The present study analyses the elevational variation in the prevalence and intensity of the blowfly Protocalliphora azurea found in the nests of two hosts—the coal tit (Periparus ater) and great tit (Parus major)—i

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Kvach, Yu. "Helminths of the Marbled Goby (Pomatoschistus Marmoratus) a Mediterranean Immigrant in the Black Sea Fauna." Vestnik Zoologii 44, no. 6 (2010): e-25-e-34. http://dx.doi.org/10.2478/v10058-010-0034-6.

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Helminths of the Marbled Goby (Pomatoschistus Marmoratus) a Mediterranean Immigrant in the Black Sea FaunaThe marbled goby,Pomatoschistus marmoratus(Risso, 1810), the Mediterranean immigrant in the Black Sea fauna, was examined for the metazoan parasites. In total, 12 parasite species were found to occurre. The component community consists of 7 trematode species, two nematodes, two acanthocephalans, and one cestode species. Two parasite species (Aphalloides coelomicolaandDichelyne minutus) were represented by both adults and larvae, four parasite species were presented by adults (Asymphylodora

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Llaberia-Robledillo, Mar, Juan Antonio Balbuena, Volodimir Sarabeev, and Cristina Llopis-Belenguer. "Changes in native and introduced host–parasite networks." Biological Invasions 24, no. 2 (2021): 543–55. http://dx.doi.org/10.1007/s10530-021-02657-7.

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AbstractIntroduced species can alter the dynamics and structure of a native community. Network analysis provides a tool to study host–parasite interactions that can help to predict the possible impact of biological invasions or other disturbances. In this study, we used weighted bipartite networks to assess differences in the interaction patterns between hosts and helminth parasites of native (Sea of Japan) and invasive (Black Sea and Sea of Azov) populations of Planiliza haematocheilus (Teleostei: Mugilidae). We employed three quantitative network descriptors, connectance, weighted nestedness

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Crossland, MR, JD Collins, and RA Alford. "Host selection and distribution of Hypermastus placentae (Eulimidae), and ectoparasitic gastropod on the sand dollar Arachnoides placenta (Echinoidea)." Marine and Freshwater Research 44, no. 6 (1993): 835. http://dx.doi.org/10.1071/mf9930835.

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The intertidal sand dollar Arachnoides placenta is parasitized by the eulimid Hypermastus placentae at Pallarenda Beach, Townsville, Queensland. A. placenta is the only echinoderm species in the region with which H. placentae associates. Sand dollars are distributed in an aggregated pattern within the littoral zone at Pallarenda Beach, and the distribution of parasites within the adult sand dollar population conforms closely to Poisson expectations. A. placenta adults in all size classes are equally susceptible to parasitization by H. placentae, whereas juveniles are not parasitized; host sele

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Aussavy, M., E. Bernardin, A. Corrigan, J. Hufschmid, and I. Beveridge. "Helminth parasite communities in four species of sympatric macropodids in western Victoria." Australian Mammalogy 33, no. 1 (2011): 13. http://dx.doi.org/10.1071/am10020.

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Helminth parasites of Macropus fuliginosus, M. giganteus, M. rufogriseus and Wallabia bicolor were examined in a region of western Victoria, Australia, where all four species of hosts are sympatric. M. fuliginosus and M. giganteus shared most of their parasites while the helminth communities of M. rufogriseus and W. bicolor were distinctive. The sympatric distribution of the host species studied provides evidence in support of the hypothesis that the differences between the parasite communities of M. fuliginosus–M. giganteus compared with those of M. rufogriseus and W. bicolor are due to paras

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