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  • Alkalinity, total; Animalia; Aragonite saturation state; Behaviour; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Dendraster excentricus; Dendraster excentricus, anterolateral arm distance; Dendraster excentricus, anterolateral arm distance, standard deviation; Dendraster excentricus, anterolateral arm length; Dendraster excentricus, anterolateral arm length, standard deviation; Dendraster excentricus, height; Dendraster excentricus, height, standard deviation; Dendraster excentricus, helical pitch; Dendraster excentricus, helical pitch, standard deviation; Dendraster excentricus, helical width; Dendraster excentricus, helical width, standard deviation; Dendraster excentricus, net horizontal speed; Dendraster excentricus, net horizontal speed, standard deviation; Dendraster excentricus, net vertical speed; Dendraster excentricus, net vertical speed, standard deviation; Dendraster excentricus, oscillating speed; Dendraster excentricus, oscillating speed, standard deviation; Dendraster excentricus, posterodorsal arm distance; Dendraster excentricus, posterodorsal arm distance, standard deviation; Dendraster excentricus, posterodorsal arm length; Dendraster excentricus, posterodorsal arm length, standard deviation; Dendraster excentricus, postoral arm distance; Dendraster excentricus, postoral arm distance, standard deviation; Dendraster excentricus, postoral arm length; Dendraster excentricus, postoral arm length, standard deviation; Dendraster excentricus, preoral arm distance; Dendraster excentricus, preoral arm distance, standard deviation; Dendraster excentricus, preoral arm length; Dendraster excentricus, preoral arm length standard deviation; Dendraster excentricus, stomach height; Dendraster excentricus, stomach height, standard deviation; Dendraster excentricus, stomach length; Dendraster excentricus, stomach length, standard deviation; Dendraster excentricus, stomach volume; Dendraster excentricus, stomach volume, standard deviation; Dendraster excentricus, total speed; Dendraster excentricus, total speed, standard deviation; Dendraster excentricus, width; Dendraster excentricus, width, standard deviation; Echinodermata; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Laboratory experiment; Measured; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter (Orion 720A); Salinity; Sample ID; Single species; Temperate; Temperature, water; Zooplankton  (1)
  • Animalia; Behaviour; Bottles or small containers/Aquaria (〈20 L); Brackish waters; Bryozoa; Bugula neritina; Growth/Morphology; Laboratory experiment; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Pelagos; Reproduction; Single species; Tropical; Zooplankton  (1)
  • Hydrodynamics  (1)
  • Particle image velocimetry  (1)
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  • 1
    facet.materialart.
    Unknown
    Seawater carbonate chemistry and larval swimming speed, spawning and settlement of a robust fouling bryozoan, Bugula neritina
    PANGAEA
    In:  Supplement to: Pecquet, Antoine; Dorey, Narimane; Chan, Kit Yu Karen (2017): Ocean acidification increases larval swimming speed and has limited effects on spawning and settlement of a robust fouling bryozoan, Bugula neritina. Marine Pollution Bulletin, 124(2), 903-910, https://doi.org/10.1016/j.marpolbul.2017.02.057
    Details
    Publication Date: 2023-05-12
    Description: Few studies to date have investigated the effects of ocean acidification on non-reef forming marine invertebrates with non-feeding larvae. Here, we exposed adults of the bryozoan Bugula neritina and their larvae to lowered pH. We monitored spawning, larval swimming, settlement, and post-settlement individual sizes at two pHs (7.9 vs. 7.6) and settlement dynamics alone over a broader pH range (8.0 down to 6.5). Our results show that spawning was not affected by adult exposure (48 h at pH 7.6), larvae swam 32% faster and the newly-settled individuals grew significantly larger (5%) at pH 7.6 than in the control. Although larvae required more time to settle when pH was lowered, reduced pH was not lethal, even down to pH 6.5. Overall, this fouling species appeared to be robust to acidification, and yet, indirect effects such as prolonging the pelagic larval duration could increase predation risk, and might negatively impact population dynamics.
    Keywords: Animalia; Behaviour; Bottles or small containers/Aquaria (〈20 L); Brackish waters; Bryozoa; Bugula neritina; Growth/Morphology; Laboratory experiment; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Pelagos; Reproduction; Single species; Tropical; Zooplankton
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Seawater carbonate chemistry and biological processes of sand dollars Dendraster excentricus during experiments, 2011 (2011)
    PANGAEA
    In:  Supplement to: Chan, Kit Yu Karen; Grünbaum, Daniel; O'Donnell, Michael J (2011): Effects of ocean-acidification-induced morphological changes on larval swimming and feeding. Journal of Experimental Biology, 214(22), 3857-3867, https://doi.org/10.1242/jeb.054809
    Details
    Publication Date: 2024-03-15
    Description: Reduction in global ocean pH due to the uptake of increased atmospheric CO2 is expected to negatively affect calcifying organisms, including the planktonic larval stages of many marine invertebrates. Planktonic larvae play crucial roles in the benthic-pelagic life cycle of marine organisms by connecting and sustaining existing populations and colonizing new habitats. Calcified larvae are typically denser than seawater and rely on swimming to navigate vertically structured water columns. Larval sand dollars Dendraster excentricus have calcified skeletal rods supporting their bodies, and propel themselves with ciliated bands looped around projections called arms. Ciliated bands are also used in food capture, and filtration rate is correlated with band length. As a result, swimming and feeding performance are highly sensitive to morphological changes. When reared at an elevated PCO2 level (1000 ppm), larval sand dollars developed significantly narrower bodies at four and six-arm stages. Morphological changes also varied between four observed maternal lineages, suggesting within-population variation in sensitivity to changes in PCO2 level. Despite these morphological changes, PCO2 concentration alone had no significant effect on swimming speeds. However, acidified larvae had significantly smaller larval stomachs and bodies, suggesting reduced feeding performance. Adjustments to larval morphologies in response to ocean acidification may prioritize swimming over feeding, implying that negative consequences of ocean acidification are carried over to later developmental stages.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Behaviour; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Dendraster excentricus; Dendraster excentricus, anterolateral arm distance; Dendraster excentricus, anterolateral arm distance, standard deviation; Dendraster excentricus, anterolateral arm length; Dendraster excentricus, anterolateral arm length, standard deviation; Dendraster excentricus, height; Dendraster excentricus, height, standard deviation; Dendraster excentricus, helical pitch; Dendraster excentricus, helical pitch, standard deviation; Dendraster excentricus, helical width; Dendraster excentricus, helical width, standard deviation; Dendraster excentricus, net horizontal speed; Dendraster excentricus, net horizontal speed, standard deviation; Dendraster excentricus, net vertical speed; Dendraster excentricus, net vertical speed, standard deviation; Dendraster excentricus, oscillating speed; Dendraster excentricus, oscillating speed, standard deviation; Dendraster excentricus, posterodorsal arm distance; Dendraster excentricus, posterodorsal arm distance, standard deviation; Dendraster excentricus, posterodorsal arm length; Dendraster excentricus, posterodorsal arm length, standard deviation; Dendraster excentricus, postoral arm distance; Dendraster excentricus, postoral arm distance, standard deviation; Dendraster excentricus, postoral arm length; Dendraster excentricus, postoral arm length, standard deviation; Dendraster excentricus, preoral arm distance; Dendraster excentricus, preoral arm distance, standard deviation; Dendraster excentricus, preoral arm length; Dendraster excentricus, preoral arm length standard deviation; Dendraster excentricus, stomach height; Dendraster excentricus, stomach height, standard deviation; Dendraster excentricus, stomach length; Dendraster excentricus, stomach length, standard deviation; Dendraster excentricus, stomach volume; Dendraster excentricus, stomach volume, standard deviation; Dendraster excentricus, total speed; Dendraster excentricus, total speed, standard deviation; Dendraster excentricus, width; Dendraster excentricus, width, standard deviation; Echinodermata; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Laboratory experiment; Measured; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter (Orion 720A); Salinity; Sample ID; Single species; Temperate; Temperature, water; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 1080 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Unknown
    Ontogenetic changes in larval swimming and orientation of pre-competent sea urchin Arbacia punctulata in turbulence (2016)
    Company of Biologists
    Details
    Publication Date: 2022-05-26
    Description: © The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Experimental Biology 219 (2016): 1303-1310, doi:10.1242/jeb.129502.
    Description: Many marine organisms have complex life histories, having sessile adults and relying on the planktonic larvae for dispersal. Larvae swim and disperse in a complex fluid environment and the effect of ambient flow on larval behavior could in turn impact their survival and transport. However, to date, most studies on larvae–flow interactions have focused on competent larvae near settlement. We examined the importance of flow on early larval stages by studying how local flow and ontogeny influence swimming behavior in pre-competent larval sea urchins, Arbacia punctulata. We exposed larval urchins to grid-stirred turbulence and recorded their behavior at two stages (4- and 6-armed plutei) in three turbulence regimes. Using particle image velocimetry to quantify and subtract local flow, we tested the hypothesis that larvae respond to turbulence by increasing swimming speed, and that the increase varies with ontogeny. Swimming speed increased with turbulence for both 4- and 6-armed larvae, but their responses differed in terms of vertical swimming velocity. 4-Armed larvae swam most strongly upward in the unforced flow regime, while 6-armed larvae swam most strongly upward in weakly forced flow. Increased turbulence intensity also decreased the relative time that larvae spent in their typical upright orientation. 6-Armed larvae were tilted more frequently in turbulence compared with 4-armed larvae. This observation suggests that as larvae increase in size and add pairs of arms, they are more likely to be passively re-oriented by moving water, rather than being stabilized (by mechanisms associated with increased mass), potentially leading to differential transport. The positive relationship between swimming speed and larval orientation angle suggests that there was also an active response to tilting in turbulence. Our results highlight the importance of turbulence to planktonic larvae, not just during settlement but also in earlier stages through morphology–flow interactions.
    Description: This work was supported by the National Science Foundation [OCE-0850419] and the National Oceanic and Atmospheric Administration Sea Grant [NA14OAR4170074]. K.Y.K.C. was supported by the Postdoctoral Scholar Program at the Woods Hole Oceanographic Institution (WHOI), with funding provided by the Coastal Ocean Institute, the Croucher Foundation and the Royal Swedish Academy of Sciences. K.Y.K.C. is currently funded by the Croucher Foundation. Additional funding was provided to L.S.M. through the WHOI Ocean Life Fellowship and discretionary WHOI funds, and to E.J.A. through the faculty sabbatical program at Grove City College.
    Keywords: Pluteus ; Behavior ; Hydrodynamics ; Particle image velocimetry
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Location Call Number Expected Availability
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    PAPER (OA)
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