Temporal variations in the infection of a population of <i>Clypeomorus bifasciata</i> (Gastropoda: Prosobranchia) by a digenean microphallid larva in Kuwait Bay

Abdul-Salam, J.; Sreelatha, B. S.; Al-Kandari, Wafa Y.

doi:10.1017/s0022149x00000717

Cited by 12 publications

(7 citation statements)

References 33 publications

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“…Sin embargo, son diversos los factores ambientales que pueden influir sobre la producción y liberación de las cercarias, e.g., pH, incremento de luz y de salinidad, ciclo de mareas (Marcogliese 2001, Mouritsen 2002, Fingerut et al 2003, Koprivnikar & Poulin 2009a. Los registros más frecuentes se refieren al aumento de la producción de cercarias con el aumento de la temperatura, aunque hay considerable variación entre las especies de Digenea, y entre los individuos hospedadores (Meyrowitsch et al 1991, Lo & Lee 1996, Lyholt & Buschmann 1996, Abdul-Salam et al 1997, Cremonte et al 2001, Fried et al 2002, Fredensborg et al 2005, Koprivnikar & Poulin 2009aMorley 2011, Shim et al 2013. El único estudio en Chile del efecto del parasitismo por Digenea sobre el metabolismo de sus hospedadores mostró que los hospedadores parasitados tenían un mayor consumo de oxígeno que los no parasitados (Olmos & George-Nascimento 1997).…”

Section: Introductionunclassified

Consumo de oxígeno en Perumytilus purpuratus según el parasitismo por Digenea, y efectos de la temperatura y del ciclo de emersión-inmersión sobre la liberación de cercarias

Castro-Rojas

Cid-Moya

George-Nascimento

2015

Rev. biol. mar. oceanogr.

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ARTÍCULO Consumo de oxígeno en Perumytilus purpuratus según elparasitismo por Digenea, y efectos de la temperatura y del ciclo de emersión-inmersión sobre la liberación de cercariasOxygen consumption in the mussel Perumytilus purpuratus according to the parasitism by Digenea, and effects of temperature and the emersion-submersion cycles on the shedding of cercariae Moreover, the hosts may show different physiological behavior depending on if they are or not parasited. This study deals with the effects that a yet unidentified digenean may have upon the oxygen consumption of Perumytilus purpuratus, as well as the effects that may have the emersion-immersion cycles in the laboratory, on cercariae release. To do this, individuals of P. purpuratus were collected by hand from intertidal rocky platforms nearby the mouth of the Biobío River, Chile. In the laboratory, oxygen consumption was compared between hosts with and without parasites, and the sheddi ng of cercariae was measured at 9, 17 y 22°C and compared between parasitized hosts exposed to opposite emersion-submersion cycles. There were no significant differences between parasitized and non-parasitized hosts in oxygen consumption. However, parasitized hosts showed scarce gonadic development, suggesting that metabolic products of the hosts are re-allocated towards parasite development. Cercariae shedding increased with water temperature and decreased exponentially with the duration of the submersion-emmersion cycle, peaking 2 h after submersion. These results suggest that metabolic rate of the host increases with temperature and that cercariae release is induced by temperature and submersion of the host in seawater.Key words: Fellodistomidae, host physiology, parasite ecophysiology, intertidal, ChileResumen.-Los Digenea son platelmintos parásitos comunes en organismos intermareales, y en sus etapas de vida libre (miracidio y cercaria) están expuestos a distintas condiciones ambientales, al igual que sus hospedadores. Por otro lado, éstos últimos pueden presentar un comportamiento fisiológico diferente si están o no parasitados. En este estudio se evaluó el efecto de la parasitosis por un digeneo, aún no identificado, sobre el consumo de oxígeno del chorito Perumytilus purpuratus, y se analizó la influencia de la temperatura del agua y los ciclos de emersión-inmersión sobre la liberación de las cer carias de estos parásitos. Ejemplares de P. purpuratus fueron recolectaron manualmente desde el roquerío intermareal de la desembocadura del río Biobío, Chile. En el laboratorio se comparó, en experimentos con distintos ejemplares, el consumo de oxígeno de individuos con y sin parásitos, y se midió la liberación de cercarias a 9, 17 y 22°C de temperatura del agua, y según ciclos opuestos de inmersión-emersión de duración variable. El consumo de oxígeno no mostró diferencias significativas entre choritos parasitados y no parasitados. Sin embargo, los ejemplares parasitados mostraron escaso desarrollo gonadal, lo que sugiere una reasignación de los productos metabólicos d...

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Section: Introductionunclassified

Consumo de oxígeno en Perumytilus purpuratus según el parasitismo por Digenea, y efectos de la temperatura y del ciclo de emersión-inmersión sobre la liberación de cercarias

Castro-Rojas

Cid-Moya

George-Nascimento

2015

Rev. biol. mar. oceanogr.

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“…Host-parasite interactions on the population level have recently come into focus of research on coastal ecosystems (Lauckner 1983, 1984, Jokela & Lively 1995, Curtis 1996, Abdul-Salam et al 1997, Mouritsen 1997. Parasites are recognized as important members of communities influencing abundance and structure of their host populations (Galaktionov & Dobrovolsky 1984, Granovitch 1992, Lafferty 1993 and are included in food chains (Lauckner 1983(Lauckner , 1984.…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal variation of trematode infection in coexisting populations of intertidal gastropods Littorina saxatilis and L. obtusata in the White Sea

Granovitch

Sergievsky²,

Im³

2000

Dis. Aquat. Org.

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Trematode infection was studied in sympatric populations of the periwinkles Ljttorina saxatilis and L. obtusata in 2 regions of Kandalaksha Bay of the White Sea to assess host-parasite interactions at the population level. Twenty-seven spatially separated populations were each surveyed in 1984-1994; 2 heavily infected populations were investigated annually over a 16 yr period. Ten trematode species were found in the periwinkle populations. The closest association in spatial distribution and temporal dynamics was observed between 3 ecologically and morphologically similar trematodes of the 'pygmaeus' group: Microphalluspjriformes, M. pygmaeus and M. pseudopygmaeus. For these 3 species, the prevalences were closely associated in the 2 host species when spatially separated sites from the 2 studied regions were considered, while in the 2 populations studied over the 16 yr period, a correlation was only observed between the infection levels of L. saxatilis and L. obtusata by either M. piriformes and immature microphallids. Likewise, within each host species, significant correlations were revealed between the prevalence of the different microphallids of the 'pygmaeus' groups. However, they were fewer and weaker when the long-term dynamics of infection in the 2 heavily infected populations were considered. Most other trematodes did not show significant association in prevalence either within or between the 2 host species on spatial and temporal scales.

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“…However, this method does not seem to be suitable for surveying snails, such as C. cingulata and C. bifasciata , infected with other digenean parasites, because the primers used for the retrieval of the complete ITS2 region appear to anneal to highly conservative regions of 5.8S and 28S of most digenetic trematodes (Kralova-Hromadova et al, 2008) and, as such, they amplify the ITS2 region for all digenean parasites infecting the same snail host. It has been reported that the snail intermediate hosts of M. eroliae and P. uca may harbour between 12 (Abdul-Salam et al , 1994; Abdul-Salam et al , 1997; Al-Kandari et al , 2007) and 15 (Abdul-Salam & Sreelatha, 1998) different trematode infections, respectively. Thus it is possible that the digenean-specific primers used in this study to amplify the ITS2 region from M. eroliae and P. uca can also amplify the same region in other trematode species whose DNA sequences are still not available in GenBank and, thus, may contain the Ava II restriction site.…”

Section: Discussionmentioning

confidence: 99%

PCR-based molecular discrimination betweenMaritrema eroliaeandProbolocoryphe uca(Digenea: Microphallidae) in Kuwait Bay

et al. 2013

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Microphallid trematodes are common parasites in marine snails and crustacean hosts at Kuwait Bay. The larval stages of two microphallids, Maritrema eroliae and Probolocoryphe uca, are difficult to differentiate morphologically. In this study, two PCR-based techniques were established for quick and accurate discrimination between the larval stages of the two microphallid species, employing restriction fragment length polymorphism (PCR-RFLP) and species-specific primers. Both techniques utilized nucleotide differences in the second internal transcribed region (ITS2) of the ribosomal DNA (rDNA) in the two species. For the PCR-RFLP technique, restriction enzyme AvaII was selected and it generated different restriction profiles among the two microphallids. In addition, species-specific primers were prepared for each microphallid species that amplified distinctive fragments. Both techniques showed that the larval stages of the two microphallid species can be identified accurately. However, direct PCR amplification using species-specific primers was more advantageous than the PCR-RFLP technique since it allowed rapid and specific discrimination between the two species. This technique provides a useful tool that can be used in future studies for the study of the distribution of microphallid species and their definitive hosts at different localities of Kuwait Bay.

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Temporal variations in the infection of a population of Clypeomorus bifasciata (Gastropoda: Prosobranchia) by a digenean microphallid larva in Kuwait Bay

Cited by 12 publications

References 33 publications

Consumo de oxígeno en Perumytilus purpuratus según el parasitismo por Digenea, y efectos de la temperatura y del ciclo de emersión-inmersión sobre la liberación de cercarias

Consumo de oxígeno en Perumytilus purpuratus según el parasitismo por Digenea, y efectos de la temperatura y del ciclo de emersión-inmersión sobre la liberación de cercarias

Spatial and temporal variation of trematode infection in coexisting populations of intertidal gastropods Littorina saxatilis and L. obtusata in the White Sea

PCR-based molecular discrimination betweenMaritrema eroliaeandProbolocoryphe uca(Digenea: Microphallidae) in Kuwait Bay

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