Application of a bioenergetics growth model for European anchovy (Engraulis encrasicolus) linked with a lower trophic level ecosystem model

Politikos, DV; Triantafyllou, G; Petihakis, G; Tsiaras, K; Somarakis, S; Ito, S-I; Megrey, BA

dc.contributor.author	Politikos, DV	en
dc.contributor.author	Triantafyllou, G	en
dc.contributor.author	Petihakis, G	en
dc.contributor.author	Tsiaras, K	en
dc.contributor.author	Somarakis, S	en
dc.contributor.author	Ito, S-I	en
dc.contributor.author	Megrey, BA	en
dc.date.accessioned	2014-03-01T01:35:19Z
dc.date.available	2014-03-01T01:35:19Z
dc.date.issued	2011	en
dc.identifier.issn	0018-8158	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20995
dc.subject	Anchovy (Engraulis encrasicolus)	en
dc.subject	Bioenergetics model	en
dc.subject	Lower trophic ecosystem model	en
dc.subject	NEMURO.FISH	en
dc.subject	Northern Aegean Sea	en
dc.subject.classification	Marine & Freshwater Biology	en
dc.subject.other	abundance	en
dc.subject.other	bioenergetics	en
dc.subject.other	clupeoid	en
dc.subject.other	ecosystem modeling	en
dc.subject.other	growth modeling	en
dc.subject.other	growth rate	en
dc.subject.other	population density	en
dc.subject.other	sensitivity analysis	en
dc.subject.other	trophic level	en
dc.subject.other	zooplankton	en
dc.subject.other	Black Sea	en
dc.subject.other	Mediterranean Sea	en
dc.subject.other	Clupeidae	en
dc.subject.other	Engraulidae	en
dc.subject.other	Engraulis encrasicolus	en
dc.subject.other	Mastigophora (flagellates)	en
dc.title	Application of a bioenergetics growth model for European anchovy (Engraulis encrasicolus) linked with a lower trophic level ecosystem model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10750-011-0674-8	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10750-011-0674-8	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	A bioenergetics model is implemented for European anchovy (Engraulis encrasicolus) and applied to the north-eastern Aegean Sea (eastern Mediterranean Sea). The model reproduces the growth of anchovy in a one-way linked configuration with a lower trophic level (LTL) ecosystem model. The LTL model provides densities for three zooplankton functional groups (heterotrophic flagellates, microzooplankton and mesozooplankton) which serve as available energy via consumption for the anchovy model. Our model follows the basic structure of NEMURO. FISH type models (North Pacific Ecosystem Model for Understanding Regional Oceanography for Including Saury and Herring). Several model parameters were specific for the Mediterranean or the Black Sea anchovy and some others were adopted from related species and NEMURO. FISH due to lack of biological information on E. encrasicolus. Simulation results showed that the fastest growth rate occurs during spring and the slowest growth rate from August to December. Zooplankton abundance during autumn was low implying that decreased prey density lead to a reduction in anchovy weight, especially for the age-3 class. Feeding parameters were adjusted to adequately fit the model growth estimates to available weight-at-age data. A detailed sensitivity analyses is conducted to evaluate the importance of the biological processes (consumption, respiration, egestion, specific dynamic action, excretion and egg production) and their parameters to fish growth. The most sensitive parameters were the intercept and exponent slope of the weight-dependent consumption and respiration process equations. Fish weight was fairly sensitive to temperature-dependent parameters. © 2011 Springer Science+Business Media B.V.	en
heal.publisher	SPRINGER	en
heal.journalName	Hydrobiologia	en
dc.identifier.doi	10.1007/s10750-011-0674-8	en
dc.identifier.isi	ISI:000291222700010	en
dc.identifier.volume	670	en
dc.identifier.issue	1	en
dc.identifier.spage	141	en
dc.identifier.epage	163	en