Reproductive behaviour in the harpacticoid copepod Tigriopus fulvus |
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Authors: | Lazzaretto I Franco F Battaglia B |
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Institution: | (1) Dipartimento di Biologia, Università di Padova, Via Trieste, 75-35121 Padova, Italy |
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Abstract: | The results of several experiments on reproductive behaviour of Tigriopus fulvus, indicate that females release a sex pheromone promoting sexual recognition and attraction in males. This compound has been verified to be not only species-specific, but also slightly modified in specimens belonging to different geographical populations. The compound possesses a mass of between 100 and 1000 daltons. A male can invest from one to 15 days in the precopulatory phase; delayed fertilization causes a strong reduction in the average number of offspring produced by parental specimens belonging to the oldest agegroups, but does not have any effect on the sex ratio. |
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Keywords: | Harpacticoid reproduction behaviour pheromone Tigriopus fulvus |
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