Salinity gradient shapes distance decay of similarity among parasite communities in three marine fishes

Thieltges, David W.; Dolch, Tobias; Krakau, Manuela; Poulin, Robert

doi:10.1111/j.1095-8649.2010.02618.x

Cited by 27 publications

(32 citation statements)

References 27 publications

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“…The decline in similarity with geographical distance is a general pattern of parasite communities in resident fish (Poulin, 2003;Oliva and Gonzalez, 2005) and migratory fish (Jakob et al, 2009;Sjö berg et al, 2009;Thieltges et al, 2010). In the present study, however, only a slight decreasing trend of the similarity with geographical distance was found.…”

Section: Discussioncontrasting

confidence: 54%

Richness and Diversity of Helminth Communities In the Japanese Grenadier Anchovy, Coilia nasus, During Its Anadromous Migration In the Yangtze River, China

Zou

et al. 2012

Journal of Parasitology

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To determine the relationship between the species richness, diversity of helminth communities, and migration distance during upward migration from coast to freshwater, helminth communities in the anadromous fish Coilia nasus were investigated along the coast of the East China Sea, the Yangtze Estuary, and 3 localities on the Yangtze River. Six helminth species were found in 224 C. nasus. Changes in salinity usually reduced the survival time of parasites, and thus the number of helminth species and their abundance. Except for the 2 dominant helminths, the acanthocephalan Acanthosentis cheni and the nematode Contracaecum sp., mean abundance of other 4 species of helminths was rather low (,1.0) during the upward migration in the Yangtze River. Mean abundance of the 2 dominant helminths peaked in the Yangtze Estuary and showed no obvious decrease among the 3 localities on the Yangtze River. Mean species richness, Brillouin's index, and Shannon index were also highest in the estuary (1.93 ± 0.88, 0.28 ± 0.25, and 0.37 ± 0.34, respectively) and did not exhibit marked decline at the 3 localities on the Yangtze River. A significant negative correlation was not seen between the similarity and the geographical distance (R 5 20.5104, P 5 0.1317). The strong salinity tolerance of intestinal helminths, relatively brief stay in the Yangtze River, and large amount of feeding on small fish and shrimp when commencing spawning migration perhaps were responsible for the results.The anadromous Japanese grenadier anchovy, Coilia nasus (Temminck & Schlegel, 1846), is distributed in the northwestern Pacific. The fish usually feeds and overwinters in the coastal waters and spawns in freshwater. When the anchovy population distributed in coasts of the East China Sea commences migration, the fish can be first found in the Yangtze Estuary in February and the middle reaches of the Yangtze River in April (Yuan et al., 1980;Yuan, 1987;Li et al., 2007). The anchovy returns to the coasts when spawning is completed from April to October in the same year in the Yangtze River (Yuan et al., 1980;Yuan, 1987;Li et al., 2007).With adaptation of fish to a decline of salinity, parasites in the fish also need to cope with changes in the osmotic pressure. A long stay would reduce survival of the freshwater parasites in salt water or marine parasites in freshwater. The mean intensity of 1 freshwater ectoparasite and 2 endoparasites in Oncorhynchus nerka decreased when reared in seawater for 32-40 wk (Bailey et al., 1989). Survival time of the nematode larva Anguillicoloides crassus in intermediate and paratenic hosts was maximal in freshwater and declined with an increase in salinity (Kirk et al., 2000). Populations of the freshwater monogenean Gyrodactylus salaris in Atlantic salmon Salmo salar declined and became extinct when salinity increased from 7.5% to 33.0% after a few minutes (Soleng and Bakke, 1997). Although some Anisakis spp. larvae with high salinity tolerance survived for more than half a year in freshwater, some survived less than...

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Section: Discussioncontrasting

confidence: 54%

Richness and Diversity of Helminth Communities In the Japanese Grenadier Anchovy, Coilia nasus, During Its Anadromous Migration In the Yangtze River, China

Zou

et al. 2012

Journal of Parasitology

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“…With the exception of infracommunities from hosts using the same roost site, both component and infracommunities that were spatially close did not have similar helminth communities. Although evidence exists for distance‐related patterns of dissimilarity in multiple host–parasite systems (Poulin , Fellis and Esch , Locke et al ), when environmental factors are also considered they typically explain more variation in parasite community dissimilarity than distance alone (Krasnov et al , Thieltges et al , Timi et al ). In our study, landcover surrounding the roost site better predicted helminth community dissimilarity than any other class of variables, especially in compositional component community dissimilarity where it explained 50.1% of variation in the dataset.…”

Section: Discussionmentioning

confidence: 99%

“…Parasites are a unique group in which to study distance decay, as the completion of their life cycle typically requires direct and intimate interactions with other species, and rate of distance decay may therefore depend not only on environmental requirements and dispersal capability of parasites, but also those of their definitive and, if applicable, intermediate hosts. Distance decay relationships have been observed among parasitic communities of a wide variety of vertebrate hosts, including mammals (Poulin , Krasnov et al , , Vinarski et al ), birds (Svensson‐Coelho and Ricklefs , Locke et al ), amphibians (Campião et al ), and both freshwater (Poulin , Fellis and Esch , Poulin et al ) and marine fish (Pérez‐del‐Olmo et al , Thieltges et al ), but few studies simultaneously examine spatial and environmental variables to determine their relative importance in explaining patterns of community dissimilarity. Geographic distance is often a poor predictor parasite communities within a host species, while environmental distance and/or phylogenetic relatedness among host species are important predictors of community dissimilarity for ectoparasitic mites and fleas parasitizing rodents (Vinarski et al , Krasnov et al ).…”

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Patterns of parasite community dissimilarity: the significant role of land use and lack of distance‐decay in a bat–helminth system

Warburton

Kohler

Vonhof

2015

Oikos

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Increasing community dissimilarity across geographic distance has been described for a wide variety of organisms and understanding its underlying causes is key to understanding mechanisms driving patterns of biodiversity. Both niche‐based and neutral processes may produce a distance decay relationship; however, disentangling their relative influence requires simultaneous examination of multiple potential drivers. Parasites represent a unique opportunity in which to study distance decay because community dissimilarity may depend on environmental requirements and dispersal capability of parasites as well also those of their hosts. We used big brown bats Eptesicus fuscus and their intestinal helminths to investigate: 1) independent contributions of geographic and environmental distances on dissimilarity of intestinal helminth component communities between populations of big brown bats; 2) which environmental variables best explained variation in community dissimilarity; and 3) whether similar patterns of decay with geographic or environmental distance were observed for within‐host population and within‐individual host parasite communities. We used compositional measures of community dissimilarity to examine how parasite communities may change with geographic distance and varying environmental conditions. Non‐spatial variables strongly influenced compositional parasite community dissimilarity over multiple community scales, and we observed little evidence for spatial processes such as distance decay. Environment surrounding roost sites better predicted helminth community dissimilarity than any other class of variables and landcover classes representing anthropogenic modification consistently explained variation in community structure. Our results indicate that human disturbance drives significant patterns of parasite community dissimilarity, most likely by changing the presence or abundance of intermediate hosts in an area.

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“…Within host species, parasite communities that are close together in space are often more similar than those that are more distant. While not universal, this trend has been documented in numerous hosts, including mammals (Poulin 2003, Krasnov et al 2005, Brouat and Duplantier 2007, Vinarski et al 2007), fishes (Poulin and Morand 1999, Poulin 2003, Karvonen and Valtonen 2004, Fellis and Esch 2005a, b, Karvonen et al 2005, Oliva and González 2005, Seifertová et al 2008, Pérez‐del‐Olmo et al 2009, Poulin et al 2011, Thieltges et al 2010a, Timi et al 2010a) and molluscs (Thieltges et al 2009). Here we provide the first evaluation of the influence of geographic distance on parasite community similarity in an avian host, the ring‐billed gull Larus delawarensis .…”

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confidence: 96%

The decay of parasite community similarity in ring‐billed gulls Larus delawarensis and other hosts

Locke¹,

Levy²,

Marcogliese³

et al. 2011

Ecography

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The similarity of parasite communities often decays with increasing geographic distance. Here, geographic distance decay is evaluated in parasite communities of 145 ring‐billed gulls from six localities in Quebec, Canada, among both individual gulls and gull populations. Spatial decay in similarity is compared to temporal decay, using host age differences as a distance measure. The similarity of parasite communities of individual gulls from localities spanning 300 km within Quebec is more strongly associated with host age differences than with geographic distance. Among gull populations in Quebec, only geographic distance is significantly related to parasite community similarity. The explanatory power of geographic distance is higher still when data from Quebec are combined with those from a study conducted 3000 km away, indicating an effect of spatial scale on geographic distance decay. The rate at which parasite community similarity decays with distance in gulls is compared with that of 17 other host species using data from published studies. Spatial scale explains two thirds of the variance in distance decay rates, and some of the remaining variance is explained by latitude. The rate of decay in parasite community similarity with distance is greater in larger scale studies and further away from the equator. Traits of host species traits such as vagility, body weight and trophic level have little or no effect on distance decay rates.

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Salinity gradient shapes distance decay of similarity among parasite communities in three marine fishes

Cited by 27 publications

References 27 publications

Richness and Diversity of Helminth Communities In the Japanese Grenadier Anchovy, Coilia nasus, During Its Anadromous Migration In the Yangtze River, China

Richness and Diversity of Helminth Communities In the Japanese Grenadier Anchovy, Coilia nasus, During Its Anadromous Migration In the Yangtze River, China

Patterns of parasite community dissimilarity: the significant role of land use and lack of distance‐decay in a bat–helminth system

The decay of parasite community similarity in ring‐billed gulls Larus delawarensis and other hosts

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