caa a22 4500 386399999 CHVBK 20180307112155.0 cr unu---uuuuu 161130e198904 xx s 000 0 eng 10.1017/S0031182000062144 doi S0031182000062144 pii (NATIONALLICENCE)cambridge-10.1017/S0031182000062144 Gastrointestinal hormones: environmental cues for Fasciola hepatica? [Elektronische Daten] The effects of pharmacological concentrations of several gastrointestinal hormones on the rate of sucker activity and the frequency and the amplitude of spontaneous longitudinal muscle contractions have been examined in adult Fasciola hepatica. Caerulein and serum decrease the rate of oral sucker activity; motilin decreases and CCK-PZ increases ventral sucker activity when compared to controls. Caerulein, serum and motilin significantly inhibit the frequency of contractions while bile, caerulein and motilin decrease the amplitude of contractions. These results suggest that F. hepatica can recognize and respond to certain gastrointestinal hormones and there may be adaptive value in these behavioural responses. Copyright © Cambridge University Press 1989 Fasciola hepatica nationallicence gastrointestinal hormones nationallicence behaviour nationallicence adaptation nationallicence Sukhdeo M. V. K. Department of Zoology, University of Toronto, 25 Harbord St, Toronto, Ontario, Canada M5S 1A1 Sukhdeo S. C. Department of Zoology, University of Toronto, 25 Harbord St, Toronto, Ontario, Canada M5S 1A1 Parasitology Cambridge University Press 98/2(1989-04), 239-243 0031-1820 98:2<239 1989 98 PAR https://doi.org/10.1017/S0031182000062144 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0031182000062144 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sukhdeo M. V. K. Department of Zoology, University of Toronto, 25 Harbord St, Toronto, Ontario, Canada M5S 1A1 NATIONALLICENCE 700 1- Sukhdeo S. C. Department of Zoology, University of Toronto, 25 Harbord St, Toronto, Ontario, Canada M5S 1A1 NATIONALLICENCE 773 0- Parasitology Cambridge University Press 98/2(1989-04), 239-243 0031-1820 98:2<239 1989 98 PAR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge