Japanese Journal of Veterinary Research;Volume 32, Number 4

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INTERBREEDING AND FECUNDITY OF A SINGLE PAIR OF TWO STRAINS OF TRICHINELLA SPIRALIS IN MICE

OOI, Hong-Kean;OKU, Yuzaburo;KAMIYA, Masao;OHBAYASHI, Masashi

Permalink : http://hdl.handle.net/2115/2311
JaLCDOI : 10.14943/jjvr.32.4.177
KEYWORDS : Trichinella spiralis;strains;interbreeding;fecundity

Abstract

Inter- and intrabreeding with a single pair of two strains of Trichinella spiralis, designated as Polish and Sapporo strains, and isolated from a wild pig and a polar bear, respectively, were performed in mice. The mating success was 53% and 47% for the Polish and Sapporo strains, respectively. The number of larvae produced by a single female worm of the Polish strain was 795±294,while those of the Sapporo strain was 275±156. F_1 hybrids produced from a cross between the two strains were fertile. It was concluded that the two strains were not reproductively isolated, although they showed biological differences in fecundity.

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