Post-cyclic transmission in Acanthocephalus tumescens (Acanthocephala: Echinorhynchidae)

Rauque, Carlos; Semenas, Liliana; Viozzi, Gustavo

doi:10.14411/fp.2002.023

Cited by 17 publications

(19 citation statements)

References 9 publications

(13 reference statements)

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“…Acanthocephalus tumescens does not provoke a strong tissue reaction in the host and encapsulation does not take place (Rauque et al 2002), besides, in Lake Moreno high levels of infection were not registered. The establishment and the fecundity of females would not be affected by the presence of specimens of the same or different species, as the only negative correlation detected (between the abundance of A. tumescens and the abundance of Camallanus corderoi) has a low association value (rS = -0.15), suggesting that neither regulation through mortality at the level of the host population nor intra-or interspecific interactions at the level of the parasite's infrapopulation take place.…”

Section: Discussionmentioning

confidence: 90%

“…Post-cyclic transmission of A. tumescens from Galaxias maculatus to other fishes could be suspected, as the former is the major prey category for the other Patagonian freshwater fishes (Macchi et al 1999). Until now this kind of transmission has only been proven for Oncorhynchus mykiss (Rauque et al 2002).…”

Section: Resultsmentioning

confidence: 99%

“…Acanthocephalus tumescens has been cited in Patagonia before the introduction of salmonids (von Linstow 1896) so, if D. viedmensis was more abundant, perhaps it played a more important role then than today in the sustaining of the A. tumescens suprapopulation. The low specificity and its capacity for post-cyclic transmission (Rauque et al 2002) made A. tumescens a better coloniser than Pomphorhynchus patagonicus in Patagonian freshwater lakes. This ability and the introduction of exotic salmonid fishes allowed for the enlargement of the host range, so O. mykiss now harbours a large proportion of the adult component population of A. tumescens.…”

Section: Discussionmentioning

confidence: 99%

“…Post-cyclic transmission has been proven for A. tumescens (Rauque et al 2002), so the aims of this study were to determine the presence of paratenia, to evaluate the status of the hosts for A. tumescens and to characterise the transmission of this acanthocephalan at the component population level in Lake Moreno.…”

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confidence: 99%

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Component population study of Acanthocephalus tumescens (Acanthocephala) in fishes from Lake Moreno, Argentina

Rauque

Viozzi²,

Semenas³

2003

FOLIA PARASIT

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Abstract. Seasonal samples of all fish species from Lake Moreno were taken in order to determine the presence of paratenia, to evaluate the status of the hosts and to characterise the transmission of Acanthocephalus tumescens (von Linstow, 1896) at the component population level. Prevalence, mean abundance, mean intensity, numbers of gravid females, relative abundance of the different fish species, relative output of eggs and relative flow rates for each host species were computed. Acanthocephalus tumescens showed low host specificity, successfully parasitizing six out of eight fish species present in the lake. No paratenic infection was registered. If prevalence, mean abundance, and number of gravid females are considered, host species can be placed in a continuum from the most to least suitable as follows: Galaxias platei Steindachner, Diplomystes viedmensis (Mac Donagh), Oncorhynchus mykiss (Walbaum), Salvelinus fontinalis (Mitchill), Percichthys trucha (Cuvier et Valenciennes) and Galaxias maculatus (Jenyns). However, when parasite flow rates and egg output were calculated, including relative abundance of each fish species, the continuum was rearranged as follows: P. trucha, O. mykiss, G. platei / G. maculatus, S. fontinalis and D. viedmensis. The first four species would be the main contributors to the population of A. tumescens in this lake, P. trucha being the major one. Different regulatory and non-regulatory mechanisms are suggested.

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Section: Discussionmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Component population study of Acanthocephalus tumescens (Acanthocephala) in fishes from Lake Moreno, Argentina

Rauque

Viozzi²,

Semenas³

2003

FOLIA PARASIT

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“…The phenomenon has been demonstrated experimentally in fish for a number of acanthocephalan species (Lassiere and Crompton, 1988;Kennedy, 1999;Rauque et al, 2002;McCormick and Nickol, 2004). This mode of parasite transmission was also demonstrated through mechanical transplantation for different stages of several species of Proteocephalus (Willemse, 1969) and has been suggested to occur in several other species of this genus (Scholz and Hanzelova, 1998).…”

Section: Literature Citedmentioning

confidence: 84%

Flotillin-1 Localization on Sporozoites of Eimeria tenella

Cacho

Gallego

López-Bernad

et al. 2007

Journal of Parasitology

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In an attempt to identify parasite surface components involved in the interaction with the host cell, the present research focuses on the rafts of Eimeria tenella that might be involved in the host cell invasion process. To that end, this study was undertaken to investigate the expression of flotillin-1, which is an important component and marker of lipid rafts at the plasma membrane of sporozoites of E. tenella. The expression of this plasma membrane protein was identified by an antibody that specifically reacts with flotillin- and was studied by electron microscopy. Flotillin-1 was found to occur in patches on the surface of E. tenella sporozoites. Immunoblot analysis of the total proteins of the sporozoites showed only 1 band of approximately 48 kDa. This indicates that the antibody exclusively recognized the molecules of flotillin-1 expressed on the surface of E. tenella sporozoites. The presence of flotillin-1 on the cellular membrane of sporozoites predominantly at the apical tip suggests that flotillin-1 belongs to the invasion machinery of E. tenella.

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Infestation dynamics between parasitic Antarctic fish leeches (Piscicolidae) and their crocodile icefish hosts (Channichthyidae)

et al. 2020

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An understanding of host-parasite interactions represents an important, but often overlooked, axis for predicting how marine biodiversity may be impacted by continued environmental change over the next century. For host and parasite communities in the Southern Ocean, investigations of many major groups of parasites have largely been limited to taxonomic and phylogenetic studies, creating an urgent need for the collection of baseline ecological data if we are to detect changes in host-parasite interactions in the future. Here, we survey three species of Crocodile icefish (Notothenioidei: Channichthyidae) collected from two island archipelagos in Antarctica's South Scotia Arc region for evidence of leech infestations. Specifically, we report on infestation prevalence and intensity of three leech species (Trulliobdella bacilliformis, Trulliobdella capitis, and Nototheniobdella sawyeri) on the host fish species Chaenocephalus aceratus, Champsocephalus gunnari, and Chionodraco rastrospinosus. Additionally, we characterize spatial patterns of relative abundances of each leech species across the Elephant and South Orkney Islands, size distribution of parasitized fish, and patterns of host and attachment site specificity.Our results reveal high levels of attachment area fidelity for each leech species. These results suggest skin thickness and density of the vascular network constrain leech attachment sites and further suggest trophic transmission to be an important axis of parasitization. We also demonstrate that, while leech species appear to be clustered spatially, this clustering does not appear to be correlated with fish biomass. This study illuminates the complex interactions among fish hosts and leech parasites in the Southern Ocean and lays the groundwork for future studies of Antarctic marine leech ecology that can aid in forecasting how host-parasite interactions may shift in the face of ongoing climate change.

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Post-cyclic transmission in Acanthocephalus tumescens (Acanthocephala: Echinorhynchidae)

Cited by 17 publications

References 9 publications

Component population study of Acanthocephalus tumescens (Acanthocephala) in fishes from Lake Moreno, Argentina

Component population study of Acanthocephalus tumescens (Acanthocephala) in fishes from Lake Moreno, Argentina

Flotillin-1 Localization on Sporozoites of Eimeria tenella

Infestation dynamics between parasitic Antarctic fish leeches (Piscicolidae) and their crocodile icefish hosts (Channichthyidae)

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