Ctenophore population recruits entirely through larval reproduction in the central Baltic Sea

Jaspers, Cornelia, Haraldsson, M., Bolte, Sören, Reusch, Thorsten B.H., Thygesen, U. H. and Kiorboe, T. (2012) Ctenophore population recruits entirely through larval reproduction in the central Baltic Sea Biology Letters, 8 (5). pp. 809-812. DOI 10.1098/rsbl.2012.0163.

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The comb jelly Mertensia ovum, widely distributed in Arctic regions, has recently been discovered in the northern Baltic Sea. We show that M. ovum also exists in the central Baltic but that the population consists solely of small-sized larvae (less than 1.6 mm). Despite the absence of adults, eggs were abundant. Experiments revealed that the larvae were reproductively active. Egg production and anticipated mortality rates suggest a self-sustaining population. This is the first account of a ctenophore population entirely recruiting through larval reproduction (paedogenesis). We hypothesize that early reproduction is favoured over growth to compensate for high predation pressure.

Document Type: Article
Additional Information: WOS:000308789200034
Keywords: Evolutionary Ecology of Marine Fishes; Marine biology; Mertensia ovum; comb jelly; reproduction; paedogenesis; MNEMIOPSIS-MCCRADYI; MERTENSIA-OVUM; SIZE
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Evolutionary Ecology of Marine Fishes
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
DOI etc.: 10.1098/rsbl.2012.0163
ISSN: 1744-9561
Projects: Future Ocean
Date Deposited: 11 May 2012 07:52
Last Modified: 25 Oct 2016 09:49
URI: http://eprints.uni-kiel.de/id/eprint/14275

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