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1 May 2000 GENITAL STRUCTURES AND SPERMATOPHORE PLACEMENT IN FEMALE PARADIAPTOMINAE (COPEPODA, CALANOIDA, DIAPTOMIDAE)
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Abstract

The female genital structures of nineteen species of the subfamily Paradiaptominae (Diaptomoidea, Diaptomidae) were studied using light and scanning electron microscopy (SEM). They exhibit a common organization characterized by the absence of seminal receptacles and by the presence of a ventral genital operculum covering the paired gonopores, confirming the general pattern of the Diaptomoidea. The taxonomic value of these structures is analyzed: the shape, size and position of the genital operculum on the genital somite is proposed as a new diagnostic character for the subfamily. The Paradiaptominae species are characterized by a peculiar placement of the spermatophore on the female, in dorsal or laterodorsal position on the urosome. The observations lead to a new hypothesis on the mode of fertilization of the females via a fertilization tube.

Danielle Defaye, Corinne Cuoc, and Michel Brunet "GENITAL STRUCTURES AND SPERMATOPHORE PLACEMENT IN FEMALE PARADIAPTOMINAE (COPEPODA, CALANOIDA, DIAPTOMIDAE)," Journal of Crustacean Biology 20(2), 245-261, (1 May 2000). https://doi.org/10.1651/0278-0372(2000)020[0245:GSASPI]2.0.CO;2
Received: 1 March 1999; Accepted: 30 September 1999; Published: 1 May 2000
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