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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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Quantifying preferences and responsiveness of marine zooplankton to changing environmental conditions using microfluidics Ramanathan, N.; Simakov, O.; Merten, C.A.; Arendt, D. (2015). Quantifying preferences and responsiveness of marine zooplankton to changing environmental conditions using microfluidics. PLoS One 10(10): e0140553. https://dx.doi.org/10.1371/journal.pone.0140553 In: PLoS One. Public Library of Science: San Francisco. ISSN 1932-6203; e-ISSN 1932-6203, meer

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VLIZ: Open access 306906 [ download pdf ]

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Trefwoorden

Industry Marine Sciences Marine Sciences > Marine Sciences General Scientific Community Scientific Publication Services/Tools Marien/Kust

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Association of European marine biological laboratories, meer

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Ramanathan, N. Simakov, O. Merten, C.A. Arendt, D.

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Abstract

Global environmental change significantly affects marine species composition. However, analyzing the impact of these changes on marine zooplankton communities was so far mostly limited to assessing lethal doses through mortality assays and hence did not allow a direct assessment of the preferred conditions, or preferendum. Here, we use a microfluidic device to characterize individual behavior of actively swimming zooplankton, and to quantitatively determine their ecological preferendum. For the annelid zooplankton model Platynereis dumerilii we observe a broader pH preferendum than for the copepod Euterpina acutifrons, and reveal previously unrecognized sub-populations with different pH preferenda. For Platynereis, the minimum concentration difference required to elicit a response (responsiveness) is ~1 μM for H+ and ~13.7 mM for NaCl. Furthermore, using laser ablations we show that olfactomedin-expressing sensory cells mediate chemical responsiveness in the Platynereis foregut. Taken together, our microfluidic approach allows precise assessment and functional understanding of environmental perception on planktonic behaviour.

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