Wplyw doboru tasiemcow macierzystych linii wsobnej Hymenolepis diminuta WMS IL1 na zmiennosc cech u tasiemcow potomnych

• Autorzy: Stradowski M
• Języki publikacji: PL

Abstrakty

EN

A continuation of a single-individual culture of Hymenolepis diminuta WMS ill from generations 37 to 66 revealed a very high infective ability of cysticercoids which is reflected in the percentage of tapeworms detected in relation to the number of cysticercoids given to rats (94.4%). The tapeworms investigated revealed a significant increase in the abundance of type 0p3a proglottids (those wilh no testes on the poral side and 3 on the aporal) in tapeworms of successive generation groups. Each group of tapeworms analysed statistically belonged to three successive generations and numbered 31-34 individuals. The mean abundances of 0p3a type proglottids in tapeworms of the first groups studied in experiment, including generations 37-39 and 40-42 were 9.2% and 9.5%, respectively. The last studied groups, including generations 61-63 and 64-66 had higher mean numbers of type 0p3a proglottids, at 11.1 % and 11.5%, respectively. The quantitative figures of 1p3a type proglottids amounted to 1.6% and 1.3% in first generation groups and in the last two groups 0.8% and 1.0%, respectively. The probable cause of this significant (P < 0.01) relative increase in the numbers of 0p3a type proglottids and decrease (P < 0.01) in the numbers of 1p3a type proglottids was the deliberate selection of maternal tapeworms characterized by numbers of 0p3a type proglottids greater and 1p3a type proglottids smaller than the a verage for their generation.

Słowa kluczowe

PL

proglotydy; dobor zwierzat; potomstwo; linie wsobne; zmiennosc cech; parazytologia; hodowla wsobna; osobniki macierzyste; Hymenolepis diminuta; tasiemce

• Wydawca: -
• Czasopismo: Wiadomości Parazytologiczne
• Rocznik: 2002
• Tom: 48
• Numer: 1
• Opis fizyczny: s.79-85,rys.,tab.,bibliogr.

Twórcy

autor

Stradowski M

• Aademia Medyczna, ul.Chalubinskiego 5, 02-004 Warszawa

Bibliografia

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• Nakamura F., Okamoto K. 1993. Reconsideration on the effects of selfing on the viability of Hymenolepis naria. International Journal for Parasitology 23: 931-936.
• Pappas P.W., Leiby D.A. 1986. Variation in the sizes of eggs and oncospheres and the numbers and distribution of testes in the tapeworm, Hymenolepis diminuta. Journal of Parasitology 72: 383-391.
• Rogers W.A., Ulmer M.J. 1963. Effects of continued selfing of Hymenolepis nana (Cestoda). Proceedings of the lowa Academy of Science 69: 557-571.
• Stradowski M. 1994a. Effects of inbreeding in Hymenolepis diminuta (Cestoda). Acta Parasitologica 39: 146-149.
• Stradowski M. 1994b. Evidence of a crowding effect on the morphology of Hymenolepis diminuta proceeding from WMS inbred line 1. Acta Parasitologica 39: 192-194.
• Stradowski M. 1998a. Influence of crowding of Hymenolepis diminuta (WMS ill) on structure of strobila. Acta Parasitologica 43: 30-35.
• Stradowski M. 1998b. Influence of infection intensity of Hymenolepis diminuta WMS inbred line 1 on morphology of uterine proglottides. Helminthologia 35: 227-229.