caa a22 4500 386399190 CHVBK 20180307112151.0 cr unu---uuuuu 161130e198908 xx s 000 0 eng 10.1017/S0031182000061096 doi S0031182000061096 pii (NATIONALLICENCE)cambridge-10.1017/S0031182000061096 Growth of single proglottides during early adult development of Hymenolepis nana [Elektronische Daten] The growth of individual proglottides of Hymenolepis nana has been studied by measuring the width and length of the proglottides between days 3 and 8 post-infection in mice. Two sets of measurements were obtained. The first involved proglottides immediately posterior to the point of proglottis formation and proglottides at particular stages of development. For the second set, measurements were made of proglottides at certain positions in the worm, specifically the 20th, 100th and 200th proglottides, as counted from the posterior end of the worm. For proglottides at different stages in development, the width of a particular stage was greater in the later days of infection, while the length was almost constant. The length of newly-formed proglottides varied only slightly with time despite differences in the width and in the 3-fold increase in proglottis production that occurs between days 3 and 8 post-infection. The width of the 20th, 100th and 200th proglottides followed parallel growth curves that coincided with each other after an appropriate shift along the time axis. The more anterior the position of the proglottis, the greater was the width at the time of proglottis formation, and so its growth began later on the common growth curve. Growth in length of the 20th proglottis was at first faster than the 100th and 200th proglottides, but later slowed down to a level comparable with them, and the growth curves for the length of the three proglottides were very similar to each other. The rates of growth in the volume of the three proglottides were also estimated. The results are also discussed in relation to other approaches to the study of tapeworm growth and to factors that may be responsible for the growth patterns observed. Copyright © Cambridge University Press 1989 Hymenolepis nana nationallicence proglottides nationallicence growth patterns nationallicence developmental stages nationallicence Kumazawa H. Department of Parasitology, Kochi Medical School, Nankoku City, Kochi 781-51, Japan Fairweather I. Department of Biology, The Queen's University, Belfast BT7 1NN Parasitology Cambridge University Press 99/1(1989-08), 115-125 0031-1820 99:1<115 1989 99 PAR https://doi.org/10.1017/S0031182000061096 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0031182000061096 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kumazawa H. Department of Parasitology, Kochi Medical School, Nankoku City, Kochi 781-51, Japan NATIONALLICENCE 700 1- Fairweather I. Department of Biology, The Queen's University, Belfast BT7 1NN NATIONALLICENCE 773 0- Parasitology Cambridge University Press 99/1(1989-08), 115-125 0031-1820 99:1<115 1989 99 PAR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence SWISSBIB 386399042 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge