Relative competence of native and exotic fish hosts for two generalist native trematodes

Paterson, Rachel A.; Lal, Aparna; Dale, Marcia; Townsend, Colin R.; Poulin, Robert; Tompkins, Daniel M.

doi:10.1016/j.ijppaw.2013.03.004

Cited by 15 publications

(9 citation statements)

References 34 publications

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“…1. Piscivorous fish can act as parasite sinks (Paperna 1980;Paterson et al 2013) or as parasite concentrators, the latter by increasing the parasite's probability of finding a mate (Brown et al 2001). Paperna (1980) suggested that fish which are too large a prey for piscivorous birds may play a significant role in moderating parasite populations in lake fish by trapping worms.…”

Section: Discussionmentioning

confidence: 99%

Parasite communities of the elongate tigerfish Hydrocynus forskahlii (Cuvier 1819) and redbelly tilapia Tilapia zillii (Gervais 1848) from Lake Turkana, Kenya: influence of host sex and size

Otachi

Szostakowska

Jirsa

et al. 2014

Acta Parasitologica

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Fish is an important food source for an estimated 300,000 people inhabiting the shores of Lake Turkana, Kenya. Despite its large size (7560 km2) and importance, the lake remains one of the least studied in the Great Lakes Region of Africa. This study describes the parasite community of the elongate tigerfish Hydrocynus forskahlii (Cuvier, 1819) and the redbelly tilapia Tilapia zillii (Gervais, 1848). A total of 87 individuals (43 H. forskahlii and 44 T. zillii) were dissected and examined for parasites. Two taxa infected H. forskahlii, the dominant one being an anisakid nematode Contracaecum sp. (L3) (P = 83.7%, mean intensity (MI) = 46.0, abundance (A) = 38.5). Twelve parasite taxa were recovered from T. zillii, with metacestodes of the gryporhynchid cestode Amirthalingamia macracantha being dominant (P = 79.5, MI = 10.3, A = 8.2). This was the first report of a mixture of merocercoids and plerocercoids in the same host. Fish size was positively correlated with the major parasite infection levels, but, the prevalence of Contracaecum sp. in H. forskahlii was negatively correlated with size, probably reflecting ontogenetic shifts in habitats and diets with age. Fish sex was not a significant influencing factor, with the exception of Contracaecum sp. in H. forskahlii, where prevalence differed significantly between sexes (p<0.05), with the females having a higher prevalence than the males. We conclude that H. forskahlii had a poor parasitic community but that the infection levels with Contracaecum sp. were high. T. zillii had a rich parasite fauna, although, most parasites occurred at low intensities.

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Section: Discussionmentioning

confidence: 99%

Parasite communities of the elongate tigerfish Hydrocynus forskahlii (Cuvier 1819) and redbelly tilapia Tilapia zillii (Gervais 1848) from Lake Turkana, Kenya: influence of host sex and size

Otachi

Szostakowska

Jirsa

et al. 2014

Acta Parasitologica

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“…Due to the crucial role of invasive species in these parasite infection scenarios, the presence and abundance of an invader has the potential to affect local parasite infection levels in native hosts (Kelly et al 2009;Poulin et al 2011;Telfer and Brown 2012). While such effects have been studied experimentally (e.g., Kopp and Jokela 2007;Thieltges et al 2009, Goedknegt et al 2015, surprisingly few studies have attempted to study the effects of invasive species on infection patterns in native hosts in the field (but see Paterson et al 2011Paterson et al , 2013 who used a combined approach). Parasite infection levels in native hosts are not only potentially affected by invasive species but also influenced by many other factors which have been shown to underlie the generally high spatial heterogeneities in infection levels observed in the field (Thieltges and Reise 2007;Byers et al 2008;Wilson et al 2011;Galaktionov et al 2015;Stringer and Linklater 2015).…”

Section: Introductionmentioning

confidence: 99%

How invasive oysters can affect parasite infection patterns in native mussels on a large spatial scale

et al. 2019

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Declaration of authorship: MAG, DWT and JVDM conceived and designed the study. MAG, RN, MM, CB and KMW conducted fieldwork. MAG, RN and MM performed parasite dissections. PCL conducted the molecular identification. EOF and AMW compiled data on biotic and environmental variables. MAG conducted the statistical analyses with input from JVDM. MAG and DWT wrote the manuscript with significant contributions of all other authors.

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“…The basic requirements for parasite spillback are that (1) the invasive host species must acquire a native or previously established parasite, (2) the invasive host species must be a competent host and amplify parasite populations, and (3) the parasite must spill back from the invasive to native host species (Kelly et al 2009). In addition, when these three requirements are met, the relative density of invasive hosts to native hosts must be sufficiently high so that the invasive hosts can act as a reservoir of infection (Paterson et al , 2013. While there is ample evidence for the acquisition of native parasites by invasive host species (step 1 of parasite spillback; e.g.…”

Section: Introductionmentioning

confidence: 99%

Spillover but no spillback of two invasive parasitic copepods from invasive Pacific oysters (Crassostrea gigas) to native bivalve hosts

et al. 2016

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Invasive species can cause indirect effects on native biota by modifying parasite-host interactions and disease occurrence in native species. This study investigated the role of the invasive Pacific oyster (Crassostrea gigas) in potential spillover (co-introduced parasites infect native hosts) and spillback (native or established parasites infect invasive hosts and re-infect native hosts) scenarios of recently introduced (Mytilicola orientalis) and previously established (Mytilicola intestinalis) marine parasitic copepods in two regions in northern Europe, the Dutch Delta and the Wadden Sea. By examining 3416 individuals of 11 potential host species from sympatric host populations, we found that the recently introduced parasite M. orientalis does not only infect its principal host, the invasive Pacific oyster (prevalence at infected sites 2-43 %, mean intensity 4.1 ± 0.6 SE), but also native blue mussels (Mytilus edulis; 3-63 %, 2.1 ± 0.2), common cockles (Cerastoderma edule; 2-13 %, 1.2 ± 0.3) and Baltic tellins (Macoma balthica; 6-7 %, 1.0 ± 0), confirming a spillover effect. Spillback effects were not observed as the previously established M. intestinalis was exclusively found in blue mussels (prevalence at infected locations 3-72 %, mean intensity 2.4 ± 0.3 SE). The high frequency of M. orientalis spillover, in particular to native mussels, suggests that Pacific oysters may cause strong parasite-mediated indirect impacts on native bivalve populations.

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Relative competence of native and exotic fish hosts for two generalist native trematodes

Cited by 15 publications

References 34 publications

Parasite communities of the elongate tigerfish Hydrocynus forskahlii (Cuvier 1819) and redbelly tilapia Tilapia zillii (Gervais 1848) from Lake Turkana, Kenya: influence of host sex and size

Parasite communities of the elongate tigerfish Hydrocynus forskahlii (Cuvier 1819) and redbelly tilapia Tilapia zillii (Gervais 1848) from Lake Turkana, Kenya: influence of host sex and size

How invasive oysters can affect parasite infection patterns in native mussels on a large spatial scale

Spillover but no spillback of two invasive parasitic copepods from invasive Pacific oysters (Crassostrea gigas) to native bivalve hosts

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