Effect of food and sediment pre-treatment in experiments with a deposit-feeding amphipod, Monoporeia affinis

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Fältnamn	Indikatorer	Metadata
000		03141naa a2200397 4500
001		oai:DiVA.org:umu-112588
003		SwePub
008		151210s2000 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1125882 URI
024	7	a https://doi.org/10.1016/S0022-0981(00)00206-92 DOI
040		a (SwePub)umu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Aljetlawi, A A4 aut
245	1 0	a Effect of food and sediment pre-treatment in experiments with a deposit-feeding amphipod, Monoporeia affinis
264	1	a Umea Univ, Dept Ecol & Environm Sci, SE-90187 Umea, Sweden.c 2000
338		a print2 rdacarrier
520		a We experimentally investigated the effects of different pre-treatments of the sediment, and the effect of daily addition of fresh phytoplankton, on the growth and survival of 1-year-old (1 +) individuals of the deposit feeder Monoporeia affinis (Amphipoda). We used three different types of sieved sediment: pre-frozen muddy clay, non-pre-frozen muddy clay, and fine sand. The muddy clay contained phytoplankton originating from the surface sediment sampled in the field during the late spring bloom. No phytoplankton was initially present in sand. The experiment lasted for 18 days. M. affinis responded to the daily phytoplankton addition by increasing growth. Phytoplankton addition had no significant effects on the survival of M. affinis. Upon phytoplankton addition, the sandy and non-frozen muddy clay gave similar growth and survival responses. In contrast, the pre-frozen sediment resulted in significantly lower growth and survival. The growth was negative in all treatments without phytoplankton. Thus, the high initial chlorophyll content in the muddy clay was not of sufficient quality or concentration to allow a positive growth response in M. affinis. The growth of M. affinis was significantly correlated with the reduction of the chlorophyll. Our results indicated that M. affinis is capable of assimilating settled phytoplankton with no, or only a few days' time delay. (C) 2000 Elsevier Science BN: All rights reserved.
650	7	a NATURVETENSKAPx Biologix Ekologi0 (SwePub)106112 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Ecology0 (SwePub)106112 hsv//eng
653		a deposit feeder
653		a growth
653		a Monoporeia affinis
653		a phytoplankton addition
653		a sediment treatment
653		a survival
653		a zooekologi
653		a Animal Ecology
700	1	a Albertsson, Jan,d 1959-u Umeå universitet,Umeå marina forskningscentrum (UMF),UMFpub4 aut0 (Swepub:umu)janaln97
700	1	a Leonardsson, K4 aut
710	2	a Umeå universitetb Umeå marina forskningscentrum (UMF)4 org
773	0	t Journal of Experimental Marine Biology and Ecologyd Umea Univ, Dept Ecol & Environm Sci, SE-90187 Umea, Sweden.g 249:2, s. 263-280q 249:2<263-280x 0022-0981x 1879-1697
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-112588
856	4 8	u https://doi.org/10.1016/S0022-0981(00)00206-9

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Av författaren/redakt...: Aljetlawi, A A; Albertsson, Jan, ...; Leonardsson, K

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