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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Reproduction rates under variable food conditions and starvation in Mnemiopsis leidyi: significance for the invasion success of a ctenophore Jaspers, C.; Møller, L. F.; Kiørboe, T. (2015). Reproduction rates under variable food conditions and starvation in Mnemiopsis leidyi: significance for the invasion success of a ctenophore. J. Plankton Res. 37(5): 1011-1018. https://dx.doi.org/10.1093/plankt/fbv017 In: Journal of Plankton Research. Oxford University Press: New York,. ISSN 0142-7873; e-ISSN 1464-3774, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 306936 [ download pdf ]

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Trefwoorden

Environmental Management > Risk Management Environmental Managers & Monitoring Marine Sciences Marine Sciences > Biodiversity Scientific Community Scientific Publication Marien/Kust

Author keywords

ctenophore; hatching success; egg production; self-fertilization

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Project	Top | Auteurs
Association of European marine biological laboratories, meer

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Auteurs		Top
Jaspers, C. Møller, L. F. Kiørboe, T., meer

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Abstract

The ctenophore Mnemiopsis leidyi is characterized by high growth rates and a large reproductive capacity. However, reproductive dynamics are not yet well understood. Here, we present laboratory data on food-dependent egg production in M. leidyi and egg hatching time and success. Further, we report on the reproduction of laboratory-reared and field-caught animals during starvation. Our results show that the half-saturation zooplankton prey concentration for egg production is reached at food levels of 12–23 µgC L−1, which is below the average summer food concentration encountered in invaded areas of northern Europe. Furthermore, starved animals continue to produce eggs for up to 12 days after cessation of feeding with high overall hatching success of 65–90%. These life history traits allow M. leidyi to thrive and reproduce in environments with varying food conditions and give it a competitive advantage under unfavourable conditions. This may explain why recurrent population blooms are observed and sustained in localized areas in invaded northern Europe, where water exchange is limited and zooplankton food resources are quickly depleted by M. leidyi. We suggest that these reproductive life history traits are key to its invasion success.

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