Two new Stephanostomum-like cercariae (Digenea: Acanthocolpidae) from Nassarius dorsatus and N. olivaceus (Gastropoda: Nassariidae) in Central Queensland, Australia

Barnett, Leonie J.; Miller, Terrence L.; Cribb, Thomas H.

doi:10.11646/zootaxa.2445.1.2

Cited by 10 publications

(5 citation statements)

References 48 publications

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“…We believe that Stephanostomum's positive response to fishing may arise from a trophic cascade in which fish that prey on snails are lost to fishing (as in McClanahan, 1989), leading to an increase in the snail intermediate host of Stephanostomum (Wood, Sandin, et al, 2014 Barnett, Miller, and Cribb (2010)], which are prey for large, molluscivorous fishes (Palmer, 1979;Vermeij, 1977). Possessing first intermediate hosts that benefit from fishing might predispose Stephanostomum spp.…”

Section: Resultsmentioning

confidence: 99%

“…metacercariae we detected are unknown, other Stephanostomum spp. are known to use large, sand‐ and mud‐dwelling whelks (superfamily Buccinoidea) and moon snails [superfamily Naticoidea; see table 4 in Barnett, Miller, and Cribb ()], which are prey for large, molluscivorous fishes (Palmer, ; Vermeij, ). Possessing first intermediate hosts that benefit from fishing might predispose Stephanostomum spp.…”

Section: Discussionmentioning

confidence: 99%

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Human impacts decouple a fundamental ecological relationship—The positive association between host diversity and parasite diversity

Wood

Zgliczynski

Haupt

et al. 2018

Global Change Biology

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Human impacts on ecosystems can decouple the fundamental ecological relationships that create patterns of diversity in free-living species. Despite the abundance, ubiquity, and ecological importance of parasites, it is unknown whether the same decoupling effects occur for parasitic species. We investigated the influence of fishing on the relationship between host diversity and parasite diversity for parasites of coral reef fishes on three fished and three unfished islands in the central equatorial Pacific. Fishing was associated with a shallowing of the positive host-diversity-parasite-diversity relationship. This occurred primarily through negative impacts of fishing on the presence of complex life-cycle parasites, which created a biologically impoverished parasite fauna of directly transmitted parasites resilient to changes in host biodiversity. Parasite diversity appears to be decoupled from host diversity by fishing impacts in this coral reef ecosystem, which suggests that such decoupling might also occur for parasites in other ecosystems affected by environmental change.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Human impacts decouple a fundamental ecological relationship—The positive association between host diversity and parasite diversity

Wood

Zgliczynski

Haupt

et al. 2018

Global Change Biology

View full text Add to dashboard Cite

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“…Køie 51 first described the presence of Opechona sp. cercariae in Nassarius pygmaeus from Scandinavia, Barnett et al 60 reported the presence of Stephanostomum -like cercariae from Australian Nassaridae. Lepocreadiid digenean probably belonging to Opechona sp.…”

Section: Discussionmentioning

confidence: 99%

Parasitic infection in the scyphozoan Rhizostoma pulmo (Macri, 1778)

Motta

Caffara

Fioravanti

et al. 2023

Sci Rep

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Very little information is reported for parasites of cnidarians, therefore, the present work aimed to investigate parasitic infections in one of the most widespread jellyfish in the Mediterranean Sea, Rhizostoma pulmo. The goals were to determine prevalence and intensity of parasites in R. pulmo, identify the species involved through morphological and molecular analysis, test whether infection parameters differ in different body parts and in relation to jellyfish size. 58 individuals were collected, 100% of them infected with digenean metacercariae. Intensity varied between 18.7 ± 6.7 per individual in 0–2 cm diameter jellyfish up to 505 ± 50.6 in 14 cm ones. Morphological and molecular analyses suggest that the metacercariae belonged to the family Lepocreadiidae and could be possibly assigned to the genus Clavogalea. Prevalence values of 100% suggest that R. pulmo is an important intermediate host in the life cycle of lepocreadiids in the region. Our findings also support the hypothesis that R. pulmo is an important part in the diet of teleost fish, which are reported as definitive hosts of lepocreadiids, since trophic transmission is necessary for these parasites to complete their life cycles. Parasitological data may therefore be useful to investigate fish-jellyfish predation, integrating traditional methods such as gut contents analysis.

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“…and Cryptogonimidae gen. sp. (Table 2), it is likely that gastropods act as first intermediate hosts [60–62]. Predatory fishes such as serranids, lutjanids or carangids (among others) could be the definitive hosts of these digeneans (see checklist 1 in [63]).…”

Section: Discussionmentioning

confidence: 99%

Metazoan parasite infracommunities of the dusky flounder (Syacium papillosum) as bioindicators of environmental conditions in the continental shelf of the Yucatan Peninsula, Mexico

et al. 2019

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Background We assessed metrics of the metazoan parasite infracommunities of the dusky flounder ( Syacium papillosum ) as indicators of aquatic environmental health of the Yucatan Shelf (YS) prior to oil extraction. We sampled the dusky flounder and its parasites along the YS, mostly during the 2015 north wind season (November–April). Our aims were: (i) to determine whether the parasite infracommunity metrics of S. papillosum exhibit significant differences among YS subregions; (ii) to determine whether the probability of the occurrence of its parasite species and individuals were affected by environmental variables, nutrients, heavy metals and hydrocarbons at the seascape level; and (iii) to determine whether there were statistical differences between the parasite infracommunity metrics of S. papillosum from YS and those of Syacium gunteri from the Campeche Sound. Multivariate statistical analyses and generalised additive models (GAMs) were used to examine the potential statistical associations between the contaminants, environmental variables and parasite community metrics, and the maximum entropy algorithm (MaxEnt) was used to characterise the habitat’s suitability for the parasite’s probability of occurrence. Results We recovered 48 metazoan parasite species from 127 S. papillosum , with larval cestodes and digeneans being the most numerically-dominant. Multivariate analyses showed significant differences in parasite infracommunity metrics among Western YS, Mid YS and Caribbean subregions, with the latter being the richest in species but not in individuals. The GAM and MaxEnt results indicated a negative effect of top predators (e.g. sharks and rays) removal on parasite metrics. The parasite infracommunities of S. papillosum were twice as rich in the number of species and individuals as those reported for S. gunteri from the Campeche Sound. Conclusions The significant differences among subregions in parasite metrics were apparently due to the interruption of the Yucatan current during the north wind season. The fishing of top predators in combination with an influx of nutrients and hydrocarbons in low concentrations coincides with an increase in larval cestodes and digeneans in S. papillosum . The dusky flounder inhabits a region (YS) with a larger number of metazoan parasite species compared with those available for S. gunteri in the Campeche Sound, suggesting better environmental conditions for transmission in the YS. Electronic supplementary material The online version of this article (10.1186/s13071-019-3524-6) contains supplementary material, which is available to authorized users.

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Two new Stephanostomum-like cercariae (Digenea: Acanthocolpidae) from Nassarius dorsatus and N. olivaceus (Gastropoda: Nassariidae) in Central Queensland, Australia

Cited by 10 publications

References 48 publications

Human impacts decouple a fundamental ecological relationship—The positive association between host diversity and parasite diversity

Human impacts decouple a fundamental ecological relationship—The positive association between host diversity and parasite diversity

Parasitic infection in the scyphozoan Rhizostoma pulmo (Macri, 1778)

Metazoan parasite infracommunities of the dusky flounder (Syacium papillosum) as bioindicators of environmental conditions in the continental shelf of the Yucatan Peninsula, Mexico

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