Faculté des sciences

The early Embryonic Development of the Argasid tick Ornithodorus moubata (Acarina: Ixodoidea: Argasidae)

Fagotto, François ; Hess, Ernst ; Aeschlimann, André

In: Entomologia generalis, 1988, vol. 13, no. 1-2, p. 1-8

The mode of cleavage of the centrolecithal tick eggs has so far been considered to be superficial. Evidence could be obtained from an electron-microscopic study of Omithodoros moubata Murray 1877 that cleavage of this species is total. The early development leads to a diploblastic stage composed of a superficial layer of yolk-free micromeres (ectomesoderm) and a core of yolk-rich... Plus

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    Summary
    The mode of cleavage of the centrolecithal tick eggs has so far been considered to be superficial. Evidence could be obtained from an electron-microscopic study of Omithodoros moubata Murray 1877 that cleavage of this species is total. The early development leads to a diploblastic stage composed of a superficial layer of yolk-free micromeres (ectomesoderm) and a core of yolk-rich macromeres (primary entoderm).