Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird
A forager?s energy intake rate is usually constrained by a combination of handling time, encounter rate and digestion rate. On top of that, food intake may be constrained when a forager can only process a maximum amount of certain toxic compounds. The latter constraint is well described for herbivor...
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ftniozdata:doi:10.25850/nioz/7b.b.8c 2023-05-15T15:48:27+02:00 Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird Oortwijn, Tim de Fouw, Jimmy Petersen, Jillian M. van Gils, Jan Tim Oortwijn NIOZ Royal Netherlands Institute for Sea Research in cooperation with Utrecht University 2022-04-29 https://doi.org/10.25850/nioz/7b.b.8c unknown NIOZ https://doi.org/10.25850/nioz/7b.b.8c Earth and Environmental Sciences Digestive constraint Lucinid bivalve Red knot Sulfide Toxicity 2022 ftniozdata https://doi.org/10.25850/nioz/7b.b.8c 2022-05-04T22:12:20Z A forager?s energy intake rate is usually constrained by a combination of handling time, encounter rate and digestion rate. On top of that, food intake may be constrained when a forager can only process a maximum amount of certain toxic compounds. The latter constraint is well described for herbivores with a limited tolerance to plant secondary metabolites. In sulfidic marine ecosystems, many animals host chemoautotrophic endosymbionts, which store sulfur compounds as an energy resource, potentially making their hosts toxic to predators. The red knot Calidris canutus canutus is a molluscivore shorebird that winters on the mudflats of Banc d?Arguin, where the most abundant bivalve prey Loripes orbiculatus hosts sulfide-oxidizing bacteria. In this system, we studied the potential effect of sulfur on the red knots? intake rates, by offering Loripes with various sulfur content to captive birds. To manipulate toxicity, we starved Loripes for 10 days by removing them from their symbiont?s energy source sulfide. As predicted, we found lower sulfur concentrations in starved Loripes. We also included natural variation in sulfur concentrations by offering Loripes collected at two different locations. In both cases lower sulfur levels in Loripes resulted in higher consumption rates in red knots. Over time the red knots increased their intake rates on Loripes, showing their ability to adjust to a higher intake of sulfur. Other/Unknown Material Calidris canutus Red Knot NIOZ Dataverse (Royal Netherlands Institute for Sea Research) |
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NIOZ Dataverse (Royal Netherlands Institute for Sea Research) |
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Earth and Environmental Sciences Digestive constraint Lucinid bivalve Red knot Sulfide Toxicity |
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Earth and Environmental Sciences Digestive constraint Lucinid bivalve Red knot Sulfide Toxicity Oortwijn, Tim de Fouw, Jimmy Petersen, Jillian M. van Gils, Jan Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird |
topic_facet |
Earth and Environmental Sciences Digestive constraint Lucinid bivalve Red knot Sulfide Toxicity |
description |
A forager?s energy intake rate is usually constrained by a combination of handling time, encounter rate and digestion rate. On top of that, food intake may be constrained when a forager can only process a maximum amount of certain toxic compounds. The latter constraint is well described for herbivores with a limited tolerance to plant secondary metabolites. In sulfidic marine ecosystems, many animals host chemoautotrophic endosymbionts, which store sulfur compounds as an energy resource, potentially making their hosts toxic to predators. The red knot Calidris canutus canutus is a molluscivore shorebird that winters on the mudflats of Banc d?Arguin, where the most abundant bivalve prey Loripes orbiculatus hosts sulfide-oxidizing bacteria. In this system, we studied the potential effect of sulfur on the red knots? intake rates, by offering Loripes with various sulfur content to captive birds. To manipulate toxicity, we starved Loripes for 10 days by removing them from their symbiont?s energy source sulfide. As predicted, we found lower sulfur concentrations in starved Loripes. We also included natural variation in sulfur concentrations by offering Loripes collected at two different locations. In both cases lower sulfur levels in Loripes resulted in higher consumption rates in red knots. Over time the red knots increased their intake rates on Loripes, showing their ability to adjust to a higher intake of sulfur. |
author2 |
Tim Oortwijn NIOZ Royal Netherlands Institute for Sea Research in cooperation with Utrecht University |
author |
Oortwijn, Tim de Fouw, Jimmy Petersen, Jillian M. van Gils, Jan |
author_facet |
Oortwijn, Tim de Fouw, Jimmy Petersen, Jillian M. van Gils, Jan |
author_sort |
Oortwijn, Tim |
title |
Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird |
title_short |
Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird |
title_full |
Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird |
title_fullStr |
Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird |
title_full_unstemmed |
Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird |
title_sort |
sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird |
publisher |
NIOZ |
publishDate |
2022 |
url |
https://doi.org/10.25850/nioz/7b.b.8c |
genre |
Calidris canutus Red Knot |
genre_facet |
Calidris canutus Red Knot |
op_relation |
https://doi.org/10.25850/nioz/7b.b.8c |
op_doi |
https://doi.org/10.25850/nioz/7b.b.8c |
_version_ |
1766383416390975488 |