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ID 28931
本文ファイル
別タイトル
Pseudodiaptomus marinus(橈脚亜綱: カラヌス目)の各発育段階での天然懸濁粒子の摂食
著者
Kasahara, Shogoro
NDC
動物学
抄録(英)
Comparative grazing experiments of various developmental stages and sexes of the inshore marine copepod Pseudodiaptomus marinus on naturally occurring particles were carried out. The feeding behavior was similar between both sexes of the adult, but different between developmental stages. The adult females were capable of consuming almost all particles from 2.8 to 63.3 μm diameter, showing selectivity for larger particles (ca. 50 μm) where the peak of particle concentration occurred. The nauplii consumed mainly smaller particles (<30 μm). The consumption by copepodites was intermediate between that of the nauplii and adult females, since they fed upon both smaller and larger particles. Such intraspecific differences of grazing behavior may lead to the effective utilization of heterogeneous natural food resources.

The ingestion rates of the adult females increased linearly with the increase of particle concentrations, without indications of the threshold nor saturation response. The amount of ingested carbon rarely met the requirement for potential egg production which was observed for the wild population. Thus, it was surmised that the adult females could ingest sufficient food deposited on the sea-bottom during a daytime epibenthic phase to attain predicted egg production.
掲載誌名
日本プランクトン学会報
30巻
2号
開始ページ
157
終了ページ
158
出版年月日
1983-11
出版者
日本プランクトン学会
農林水産研究情報センター
ISSN
0387-8961
NCID
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 1983 The Plankton Society of Japan
部局名
生物圏科学研究科