Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen
The small gastropod, Lacuna decorata Adams, living on macrophytobenthos or surface sediment, is one of the most dominant species of macrozoobenthos in Hichirippu lagoon covered with seagrass and macroalgae, eastern Hokkaido, Japan. We measured the standing stocks of primary producers and macrozooben...
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Online Access: | http://hdl.handle.net/2115/67174 https://doi.org/10.3800/pbr.5.90 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/67174 2023-05-15T18:28:30+02:00 Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen Kajihara, Rumiko Komorita, Tomohiro Hamada, Akemi Shibanuma, Seiichiro Yamada, Toshiro Montani, Shigeru http://hdl.handle.net/2115/67174 https://doi.org/10.3800/pbr.5.90 eng eng http://hdl.handle.net/2115/67174 Plankton and Benthos Research, 5(3): 90-97 http://dx.doi.org/10.3800/pbr.5.90 © 2010 Plankton Society of Japan and Japanese Association of Benthology food resource gastropod green algae Lacuna decorata lagoon seagrass stable isotope Zostera japonica 660 article fthokunivhus https://doi.org/10.3800/pbr.5.90 2022-11-18T01:04:25Z The small gastropod, Lacuna decorata Adams, living on macrophytobenthos or surface sediment, is one of the most dominant species of macrozoobenthos in Hichirippu lagoon covered with seagrass and macroalgae, eastern Hokkaido, Japan. We measured the standing stocks of primary producers and macrozoobenthos, and determined the stable carbon and nitrogen isotope ratios of the primary producers and L. decorata. With these results, we identify the main food items for L. decorata and discuss the feeding strategy of the small gastropod. This gastropod occupied about 64% in density and about 25% in biomass of the macrozoobenthos at all six sampling stations in the lagoon. It occurred densely on the surface of the sediment with dense patches of benthic microalgae (BMA), which contained extremely high levels of Chl.-a between 84 to 226 mg m−2 throughout the period of this study. Nevertheless, the stable isotope signatures of carbon and nitrogen of this gastropod clearly show the direct utilization of organic matter derived from seagrass, Zostera japonica, in the areas where the seagrass luxuriated. However, it shows also a flexible feeding strategy in food preference. It fed green algae such as Ulva pertusa and Urospora wormskioldii in the areas where the seagrass grew scarcely. Article in Journal/Newspaper Subarctic Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Plankton and Benthos Research 5 3 90 97 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
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fthokunivhus |
language |
English |
topic |
food resource gastropod green algae Lacuna decorata lagoon seagrass stable isotope Zostera japonica 660 |
spellingShingle |
food resource gastropod green algae Lacuna decorata lagoon seagrass stable isotope Zostera japonica 660 Kajihara, Rumiko Komorita, Tomohiro Hamada, Akemi Shibanuma, Seiichiro Yamada, Toshiro Montani, Shigeru Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen |
topic_facet |
food resource gastropod green algae Lacuna decorata lagoon seagrass stable isotope Zostera japonica 660 |
description |
The small gastropod, Lacuna decorata Adams, living on macrophytobenthos or surface sediment, is one of the most dominant species of macrozoobenthos in Hichirippu lagoon covered with seagrass and macroalgae, eastern Hokkaido, Japan. We measured the standing stocks of primary producers and macrozoobenthos, and determined the stable carbon and nitrogen isotope ratios of the primary producers and L. decorata. With these results, we identify the main food items for L. decorata and discuss the feeding strategy of the small gastropod. This gastropod occupied about 64% in density and about 25% in biomass of the macrozoobenthos at all six sampling stations in the lagoon. It occurred densely on the surface of the sediment with dense patches of benthic microalgae (BMA), which contained extremely high levels of Chl.-a between 84 to 226 mg m−2 throughout the period of this study. Nevertheless, the stable isotope signatures of carbon and nitrogen of this gastropod clearly show the direct utilization of organic matter derived from seagrass, Zostera japonica, in the areas where the seagrass luxuriated. However, it shows also a flexible feeding strategy in food preference. It fed green algae such as Ulva pertusa and Urospora wormskioldii in the areas where the seagrass grew scarcely. |
format |
Article in Journal/Newspaper |
author |
Kajihara, Rumiko Komorita, Tomohiro Hamada, Akemi Shibanuma, Seiichiro Yamada, Toshiro Montani, Shigeru |
author_facet |
Kajihara, Rumiko Komorita, Tomohiro Hamada, Akemi Shibanuma, Seiichiro Yamada, Toshiro Montani, Shigeru |
author_sort |
Kajihara, Rumiko |
title |
Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen |
title_short |
Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen |
title_full |
Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen |
title_fullStr |
Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen |
title_full_unstemmed |
Possibility of direct utilization of seagrass and algae as main food resources by small gastropod, Lacuna decorata, in a subarctic lagoon, Hichirippu, eastern Hokkaido, Japan with stable isotope evidences of carbon and nitrogen |
title_sort |
possibility of direct utilization of seagrass and algae as main food resources by small gastropod, lacuna decorata, in a subarctic lagoon, hichirippu, eastern hokkaido, japan with stable isotope evidences of carbon and nitrogen |
url |
http://hdl.handle.net/2115/67174 https://doi.org/10.3800/pbr.5.90 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
http://hdl.handle.net/2115/67174 Plankton and Benthos Research, 5(3): 90-97 http://dx.doi.org/10.3800/pbr.5.90 |
op_rights |
© 2010 Plankton Society of Japan and Japanese Association of Benthology |
op_doi |
https://doi.org/10.3800/pbr.5.90 |
container_title |
Plankton and Benthos Research |
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5 |
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3 |
container_start_page |
90 |
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97 |
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1766211010666954752 |