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Ecology and behavior of Bolinopsis infundibulum (Ctenophora; Lobata) in the Northeast Atlantic
Umeå University, Faculty of Science and Technology, Umeå Marine Sciences Centre (UMF). (UMFpub)
Institute of Marine Research, Bergen, Norway .
2015 (English)In: Hydrobiologia, ISSN 0018-8158, E-ISSN 1573-5117, Vol. 759, no 1, 3-14 p.Article in journal (Refereed) Published
Abstract [en]

Results from field surveys with net sampling and video profiling, combined with laboratory experiments on feeding and growth, revealed the ecological function of Bolinopsis infundibulum in northern temperate coastal waters. B. infundibulum reaching a peak abundance of around 250 ctenophores m(-2), in mid-May, followed by a dramatic reduction over the next few weeks, presumably explained by predation from the ctenophore Beroe cucumis. The field data on maximum individual body height in the population indicated an instantaneous growth rate of 0.129 d(-1). Newly hatched cydippid larvae showed an average instantaneous growth rate of 0.240 d(-1) over 4 weeks, whereas ctenophores in the size range of 4.4-9.8 mm height gave instantaneous growth rates between 0.10 and 0.20 d(-1). B. infundibulum disappeared from surface water in mid-June, but big individuals were found in deeper water, where they preyed on copepods. The results indicate that the new generation of the year was recruited from February onwards. Laboratory predation and digestion experiments showed a continuous increase in predation rate with increased prey abundance, throughout the tested range of 5-400 copepods l(-1), and a digestion time increasing from 39 min with a single copepod ingested to 73 min with 8 copepods ingested.

Place, publisher, year, edition, pages
Springer, 2015. Vol. 759, no 1, 3-14 p.
Keyword [en]
Bolinopsis infundibulum, Ctenophores, Growth rate, Predation rate, Behavior, Digestion rate, erwintering, Life cycle
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:umu:diva-109364DOI: 10.1007/s10750-015-2180-xISI: 000360672400002OAI: oai:DiVA.org:umu-109364DiVA: diva2:856876
Available from: 2015-09-25 Created: 2015-09-25 Last updated: 2017-10-24Bibliographically approved

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Båmstedt, Ulf

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