caa a22 4500 386387850 CHVBK 20180307112104.0 cr unu---uuuuu 161130e198909 xx s 000 0 eng 10.1017/S0022149X00009032 doi S0022149X00009032 pii (NATIONALLICENCE)cambridge-10.1017/S0022149X00009032 The function of the paraoesophageal glands in an echinostome (digenean) cercaria (? Cercaria spinifera La Valette, 1855) [Elektronische Daten] An echinostome cercaria (? Cercaria spinifera La Valette, 1855) with 37 collar spines and paraoesophageal glands has been recorded for the first time in Britain from the gastropod Planorbarius corneus. The cercariae penetrate into and encyst in planarians. Observations made on cercariae during penetration indicate that the paraoesophageal glands are used to enter the body of the planarian and that the so-called penetration glands have some other function. Gastropod molluscs may also serve as second intermediate hosts, but there is evidence to indicate that anatomically similar cercariae from different host individuals vary in their second intermediate host preferences. Copyright © Cambridge University Press 1989 Digenea nationallicence echinostomes nationallicence Cercaria spinifera nationallicence paraoesophageal glands nationallicence planarians nationallicence penetration nationallicence Planorbarius corneus nationallicence Cleveland G. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK Kearn G. C. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK Journal of Helminthology Cambridge University Press 63/3(1989-09), 231-238 0022-149X 63:3<231 1989 63 JHL https://doi.org/10.1017/S0022149X00009032 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022149X00009032 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cleveland G. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK NATIONALLICENCE 700 1- Kearn G. C. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK NATIONALLICENCE 773 0- Journal of Helminthology Cambridge University Press 63/3(1989-09), 231-238 0022-149X 63:3<231 1989 63 JHL CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge