書誌事項
- タイトル別名
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- Occurrence of the planktonic decapod larvae (Crustacea) in tidal-flat covering water off Obitsu River estuary, eastern coast of the Tokyo Bay, in summer
- カキ ノ ショウビツガワ カコウ ヒガタ(バン ス ヒガタ)ニ オケル ヒョウ ヒスイチュウ ノ ジッキャク コウカクルイヨウセイ
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Occurrence of planktonic decapod larvae (Crustacea) in covering water at a station on the tidal-flat off Obitsu River estuary, eastern coast of the Tokyo Bay, central Japan, was investigated during 16-17th August of 2010. Samples were obtained by vertical hauls of a Marutoku net (mouth diameter 45 cm, mesh size 330 μm) from the bottom to the surface. Nineteen taxa of decapod larvae, including 8 taxa identified to species level, were occurred. These decapod larvae consisted of the species that benthic populations are distributed around the Obitsu River estuary, such as salt-marsh crab Chiromantes dehaani, salt-marsh ghostshrimp Laomedia astacina, sand-flat ghostshrimp Nihonotrypaea japonica, and sand-flat crabs Scopimera globosa and Philyra pisum. The abundance of each taxa excluding P. pisum was very low during the daytime (1-6 inds. m^<-3>), but high in the nighttime (1-470 inds. m^<-3>), largely reflected by change of abundance of N. japonica (maximum 470 inds. m^<-3> at 22 : 00). The abundance of P. pisum was positively synchronized with water level (3-36 inds. m^<-3>). Most larvae collected in this survey are in first zoeal stage that should be newly hatched from adult. A small number of megalopae and juveniles (N. japonica and unknown Brachyura) occurred mainly during the nighttime suggesting revolving larvae with diel migration between water column and seabottom.
収録刊行物
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- CANCER
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CANCER 21 (0), 13-18, 2012
日本甲殻類学会
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詳細情報 詳細情報について
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- CRID
- 1390001204425193216
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- NII論文ID
- 110009586379
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- NII書誌ID
- AN10409222
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- ISSN
- 24241407
- 09181989
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- NDL書誌ID
- 024028726
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可