Krumme, Uwe, Keuthen, Heike, Barletta, Mário, Saint-Paul, Ulrich and Villwock, W. (2008) Resuspended intertidal microphytobenthos as major diet component of planktivorous atlantic Anchoveta Cetengraulis edentulus (Engraulidae) from Equatorial mangrove creeks. Ecotropica, 14 . pp. 121-128.

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Abstract

In the present study we examined the stomach contents of 49 Atlantic anchoveta, Cetengraulis edentulus (Engraulidae), caught with a block net from intertidal mangrove creeks at diurnal neap tides between June and September 1997 near Bragança (Pará, northern Brazil). On average the fish had eaten 0.53 % ± 0.35 SD of their wet weight, with fuller stomachs in June/July. Cetengraulis edentulus is a phytoplanktivorous filter-feeder. The principal food was composed of about half pelagic and half benthic diatoms, predominantly within a 20 to 200 μm size range. Coscinodiscus, other centric diatoms, and Nitzschia were abundant in the diet throughout the sample period. Sediment particles and detritus were also ingested. Our observations suggest that foraging occurs close to the substrate and throughout the water column in shallow turbid waters. The study indicates the importance of intertidal microphytobenthos production during low tide being made available to transient planktivorous fish at high tide by tidal resuspension. Atlantic anchoveta may occupy a central position in the food web of many Neotropical mangrove ecosystems along the Atlantic coast. Its close association with mangroves may partially explain its irregular distribution between Mexico and southern Brazil.

Document Type:	Article
Programme Area:	UNSPECIFIED
Research affiliation:	Ecology > Mangrove Ecology Ecology > Fisheries Biology
Refereed:	Yes
Open Access Journal?:	No
Date Deposited:	02 Mar 2020 15:50
Last Modified:	26 Mar 2024 13:30
URI:	http://cris.leibniz-zmt.de/id/eprint/3490

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