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The egg string attachment mechanism in Hatschekia hippoglossi (Guérin-Méneville, [1837]) (Copepoda, Hatschekiidae)
Schram, T.A. (2000). The egg string attachment mechanism in Hatschekia hippoglossi (Guérin-Méneville, [1837]) (Copepoda, Hatschekiidae). Sarsia 85: 151-156
In: Sarsia. University of Bergen. Universitetsforlaget: Bergen. ISSN 0036-4827, more
Peer reviewed article  

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Keyword
    Marine

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  • Schram, T.A.

Abstract
    The female Hatschekia hippoglossi carries two egg strings, which protrude from its abdominal segment. The anatomy of the genital complex and the hook apparatus that keeps the trailing egg strings in position is illustrated and described. The oviduct openings and the copulatory pores are, in contrast to other parasitic copepods, situated on the abdominal segment where also the relative large hooks are visible. Based on light and scanning electron microscopy, it is shown how the sacs are mechanically secured by the penetration of a pair of hooks through the proximal ends of the strings. The suspension structure and the muscles that move the hooks are described. The hook apparatus is compared with that of the salmon louse Lepeophtheirus salmonis, which is anatomically different but principally similar and described in a previous paper.

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