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Statements

Subject Item
n2:RIV%2F60077344%3A_____%2F14%3A00430605%21RIV15-GA0-60077344
rdf:type
n11:Vysledek skos:Concept
dcterms:description
Due to their shallow and confined nature, lagoons provide excellent conditions for the transmission of digenean trematode parasites that require two or more intermediate hosts for the completion of their complex life cycles. However, these unstable environments are characterised by an internal heterogeneity and a large variation of a range of abiotic variables. We conducted a series of experiments in a comparative framework to assess the effect of a number of exogenous factors known to exhibit marked fluctuations in the lagoonal environment, i.e. temperature, salinity, water level and photoperiod, on larval emergence of two sympatric parasites, Cainocreadium labracis and Macvicaria obovata, which share the snail intermediate host, Gibbula adansonii, and a sit-and-wait downstream host-finding strategy. Our results demonstrated contrasting patterns and rates of larval emergence indicating an overall differential response of the two species to the variation of the environmental factors. Cercariae of M. obovata exhibited increased emergence rates at elevated temperature (with a sharp increase at 15 degrees C), decreased salinity (35-25 practical salinity units (psu)) and low water levels, whereas larval emergence of C. labracis was unaffected by the experimental variation in temperature and water level and showed decreased rates at decreased salinity levels (35-25 psu). The differential impact of the variable environmental conditions indicates the complexity of the patterns of exogenous control modifying parasite transmission and abundance in the lagoonal environment. Most importantly, the contrasting rhythms of larval emergence indicate endogenous control associated with the different transmission pathways of the two opecoelid digeneans. Due to their shallow and confined nature, lagoons provide excellent conditions for the transmission of digenean trematode parasites that require two or more intermediate hosts for the completion of their complex life cycles. However, these unstable environments are characterised by an internal heterogeneity and a large variation of a range of abiotic variables. We conducted a series of experiments in a comparative framework to assess the effect of a number of exogenous factors known to exhibit marked fluctuations in the lagoonal environment, i.e. temperature, salinity, water level and photoperiod, on larval emergence of two sympatric parasites, Cainocreadium labracis and Macvicaria obovata, which share the snail intermediate host, Gibbula adansonii, and a sit-and-wait downstream host-finding strategy. Our results demonstrated contrasting patterns and rates of larval emergence indicating an overall differential response of the two species to the variation of the environmental factors. Cercariae of M. obovata exhibited increased emergence rates at elevated temperature (with a sharp increase at 15 degrees C), decreased salinity (35-25 practical salinity units (psu)) and low water levels, whereas larval emergence of C. labracis was unaffected by the experimental variation in temperature and water level and showed decreased rates at decreased salinity levels (35-25 psu). The differential impact of the variable environmental conditions indicates the complexity of the patterns of exogenous control modifying parasite transmission and abundance in the lagoonal environment. Most importantly, the contrasting rhythms of larval emergence indicate endogenous control associated with the different transmission pathways of the two opecoelid digeneans.
dcterms:title
Same host, same lagoon, different transmission pathways: effects of exogenous factors on larval emergence in two marine digenean parasites Same host, same lagoon, different transmission pathways: effects of exogenous factors on larval emergence in two marine digenean parasites
skos:prefLabel
Same host, same lagoon, different transmission pathways: effects of exogenous factors on larval emergence in two marine digenean parasites Same host, same lagoon, different transmission pathways: effects of exogenous factors on larval emergence in two marine digenean parasites
skos:notation
RIV/60077344:_____/14:00430605!RIV15-GA0-60077344
n3:aktivita
n5:P n5:I
n3:aktivity
I, P(GAP505/10/1562)
n3:cisloPeriodika
2
n3:dodaniDat
n13:2015
n3:domaciTvurceVysledku
Kostadinova, Aneta Holzer, Astrid S.
n3:druhVysledku
n16:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
43737
n3:idVysledku
RIV/60077344:_____/14:00430605
n3:jazykVysledku
n17:eng
n3:klicovaSlova
patterns; water; life-cycles
n3:klicoveSlovo
n9:water n9:patterns n9:life-cycles
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[59E8A1DA9674]
n3:nazevZdroje
Parasitology Research
n3:obor
n15:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n4:GAP505%2F10%2F1562
n3:rokUplatneniVysledku
n13:2014
n3:svazekPeriodika
113
n3:tvurceVysledku
Born-Torrijos, A. Holzer, Astrid S. Raga, J. A. Kostadinova, Aneta
n3:wos
000333028100012
s:issn
0932-0113
s:numberOfPages
10
n12:doi
10.1007/s00436-013-3686-7