The Influence of Trematode Invasion on the Thermoresistance of Lymnaea stagnalis (Gastropoda, Pulmonata) Population from the Floodplain Reservoir of Angara River

Golubev, A.P.; Bodilovskaya, O.A.; Khomich, A.S.; Korotchikova, N.V.; Vereshchagina, K.P.; Lubyaga, Y.A.; Shchapova, E.P.; Shatilina, Z.M.; Axenov-Gribanov, D.V.

Journal of Stress Physiology & Biochemistry, Vol. 11 No. 2 2015, pp. 28-39 ISSN 1997-0838
Original Text Copyright (cc) 2015 by Golubev, Bodilovskaya, Khomich, Korotchikova, Vereshchagina, Lubyaga, Shchapova, Shatilina and Axenov-Gribanov

ORIGINAL ARTICLE

Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 1

The Influence of Trematode Invasion on the Thermoresistance of Lymnaea stagnalis (Gastropoda, Pulmonata) Population from the Floodplain Reservoir of Angara River

Golubev A.P.¹*, Bodilovskaya O.A.¹, Khomich A.S.¹, Korotchikova N.V.¹, Vereshchagina K.P.², Lubyaga Y.A.², Shchapova E.P.², Shatilina Z.M.², Axenov-Gribanov D.V.¹**

¹ International Sakharov Environmental University. 220070 Minsk, 23, Dolgobrodskaya str., Belarus
Tel.: + 375 17 242 70 52; E-Mail*: algiv@rambler.ru
² Institute of Biology at Irkutsk State University. 664003 Irkutsk, 3 Lenin str., Russia
Tel.:+7(3952) 24 30 77; E-mail**: denis.axengri@gmail.com

Received April 30, 2015

The average terms (AT) of survival at 35°C in matured Lymnaea stagnalis with different levels of trematode invasion have been determined. There were noninvaded individuals from a natural population of L. stagnalis and laboratory culture; poorly (rear sporocysts and rediae) and heavily invaded (numerous cercariae) ones from a natural population. The AT values for both noninvaded groups were practically identical (31.6 and 32.4 hours, respectively). The AT values for the heavily invaded ones (18.0 hours) were significantly lower (p < 0.01) than for all of groups which mentioned above. The AT value for the non-selected sample from a natural population (22.5 hours) was rather low because of their strong infestation of mollusks (up to 84.6%) with cercaria. Obviously, the thermoresistance of natural L. stagnalis populations is largely determined both by the shares of invaded mollusks and the stages of trematode life cycle in them.

Key words: adaptation, cercariae, Lymnaea stagnalis, rediae, thermoresistance, trematode infestation