Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron
Herbivore digestion in aquatic ecosystems is usually considered a method of nutrient repackaging rather than recycling, as recalcitrant and low-level nutrients are presumed for their egesta. We hypothesize that this opinion holds only for nutrients recycled by excretion and egestion, not for those e...
Published in: | Journal of Oceanology and Limnology |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/177332 2023-05-15T15:58:53+02:00 Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron Wang, Ying Kuang, Shaoping Zhang, Guangtao 2022-01-07 http://ir.qdio.ac.cn/handle/337002/177332 https://doi.org/10.1007/s00343-021-1117-7 英语 eng SCIENCE PRESS JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/177332 doi:10.1007/s00343-021-1117-7 macroinvertebrate nutrient regeneration feces mariculture fecal silicate dissolution Marine & Freshwater Biology Oceanography Limnology COASTAL WATERS COPEPOD GUTS OCEAN BIOAVAILABILITY DECOMPOSITION ASSIMILATION INGESTION QUANTITY DYNAMICS 期刊论文 2022 ftchinacasciocas https://doi.org/10.1007/s00343-021-1117-7 2022-06-27T05:46:36Z Herbivore digestion in aquatic ecosystems is usually considered a method of nutrient repackaging rather than recycling, as recalcitrant and low-level nutrients are presumed for their egesta. We hypothesize that this opinion holds only for nutrients recycled by excretion and egestion, not for those elements recycled overwhelmingly by fecal decomposition. In this study, we compared the dissolution of biogenic silica (BSi), phosphorus (P) and iron (Fe) between two food items and fecal pellets of two marine invertebrates fed on artificial seawaters free of bacteria. Relative to raw food materials, the mass proportion in fecal pellets of BSi increased, while that of P and Fe decreased. During the 21 days of incubation, the total dissolution rate of BSi was 13.9-36.0 times higher in fecal pellets than food items, followed by P (1.5-4.2 times) and Fe (1.1-2.4 times). While the dissolution of BSi and Fe occurred mostly in the first few days, P was mostly released in the last ten days. Regarding BSi dissolution, a higher rate was observed in oyster Crassostrea gigas than the Echiuran Urechis unicinctus, but no significant difference was found between fecal pellets in either species under naturally available diatom food (Phaeodactylum tricornutum) and introduced terrestrial food (rice husk powder), respectively. Our results show direct evidence of digestion-associated nutrients mobilization. BSi dissolution after animal digestion may be similarly efficient to that caused by bacteria colonization in natural seawater. Report Crassostrea gigas Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Journal of Oceanology and Limnology 40 3 1110 1120 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
macroinvertebrate nutrient regeneration feces mariculture fecal silicate dissolution Marine & Freshwater Biology Oceanography Limnology COASTAL WATERS COPEPOD GUTS OCEAN BIOAVAILABILITY DECOMPOSITION ASSIMILATION INGESTION QUANTITY DYNAMICS |
spellingShingle |
macroinvertebrate nutrient regeneration feces mariculture fecal silicate dissolution Marine & Freshwater Biology Oceanography Limnology COASTAL WATERS COPEPOD GUTS OCEAN BIOAVAILABILITY DECOMPOSITION ASSIMILATION INGESTION QUANTITY DYNAMICS Wang, Ying Kuang, Shaoping Zhang, Guangtao Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron |
topic_facet |
macroinvertebrate nutrient regeneration feces mariculture fecal silicate dissolution Marine & Freshwater Biology Oceanography Limnology COASTAL WATERS COPEPOD GUTS OCEAN BIOAVAILABILITY DECOMPOSITION ASSIMILATION INGESTION QUANTITY DYNAMICS |
description |
Herbivore digestion in aquatic ecosystems is usually considered a method of nutrient repackaging rather than recycling, as recalcitrant and low-level nutrients are presumed for their egesta. We hypothesize that this opinion holds only for nutrients recycled by excretion and egestion, not for those elements recycled overwhelmingly by fecal decomposition. In this study, we compared the dissolution of biogenic silica (BSi), phosphorus (P) and iron (Fe) between two food items and fecal pellets of two marine invertebrates fed on artificial seawaters free of bacteria. Relative to raw food materials, the mass proportion in fecal pellets of BSi increased, while that of P and Fe decreased. During the 21 days of incubation, the total dissolution rate of BSi was 13.9-36.0 times higher in fecal pellets than food items, followed by P (1.5-4.2 times) and Fe (1.1-2.4 times). While the dissolution of BSi and Fe occurred mostly in the first few days, P was mostly released in the last ten days. Regarding BSi dissolution, a higher rate was observed in oyster Crassostrea gigas than the Echiuran Urechis unicinctus, but no significant difference was found between fecal pellets in either species under naturally available diatom food (Phaeodactylum tricornutum) and introduced terrestrial food (rice husk powder), respectively. Our results show direct evidence of digestion-associated nutrients mobilization. BSi dissolution after animal digestion may be similarly efficient to that caused by bacteria colonization in natural seawater. |
format |
Report |
author |
Wang, Ying Kuang, Shaoping Zhang, Guangtao |
author_facet |
Wang, Ying Kuang, Shaoping Zhang, Guangtao |
author_sort |
Wang, Ying |
title |
Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron |
title_short |
Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron |
title_full |
Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron |
title_fullStr |
Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron |
title_full_unstemmed |
Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron |
title_sort |
accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron |
publisher |
SCIENCE PRESS |
publishDate |
2022 |
url |
http://ir.qdio.ac.cn/handle/337002/177332 https://doi.org/10.1007/s00343-021-1117-7 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/177332 doi:10.1007/s00343-021-1117-7 |
op_doi |
https://doi.org/10.1007/s00343-021-1117-7 |
container_title |
Journal of Oceanology and Limnology |
container_volume |
40 |
container_issue |
3 |
container_start_page |
1110 |
op_container_end_page |
1120 |
_version_ |
1766394660256743424 |