Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
PREY CONSUMPTION AND PREDATORY EFFECTS OF AN INVERTEBRATE PREDATOR (BYTHOTREPHES, CLADOCERA, CERCOPAGIDAE) BASED ON PHOSPHORUS BUDGETS
Autore:
BURKHARDT S; LEHMAN JT;
Indirizzi:
ALFRED WEGENER INST POLAR & MARINE RES,POSTFACH 120161,COLUMBUSSTR D-27568 BREMERHAVEN GERMANY UNIV MICHIGAN,DEPT BIOL ANN ARBOR MI 48109
Titolo Testata:
Limnology and oceanography
fascicolo: 5, volume: 39, anno: 1994,
pagine: 1007 - 1019
SICI:
0024-3590(1994)39:5<1007:PCAPEO>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
LAKE-MICHIGAN; GREAT-LAKES; SPECIES INVASION; ZOOPLANKTON; CEDERSTROEMI; CARBON; NITROGEN; DYNAMICS; ERIE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
S. Burkhardt e J.T. Lehman, "PREY CONSUMPTION AND PREDATORY EFFECTS OF AN INVERTEBRATE PREDATOR (BYTHOTREPHES, CLADOCERA, CERCOPAGIDAE) BASED ON PHOSPHORUS BUDGETS", Limnology and oceanography, 39(5), 1994, pp. 1007-1019

Abstract

Phosphorus excretion rates, ingestion efficiency, and P content of Bythotrephes at different developmental stages are used to estimate predation rates indirectly from metabolic needs. A growth model is developed to predict P content and weight of this invertebrate planktivore throughout its life. P consumption required to complete one parthenogenic life cycle of the predator is estimated from metabolic rates and weight measurements of individual instars. Based on P requirements and prey stoichiometry, empirical ingestion efficiency of 59%, and assimilation efficiency of 85%, each Bythotrephes consumes the equivalent of 14Daphnia per day on average and can inflict mortality equal or greaterin magnitude to Daphnia recruitment rates during midsummer in offshore waters of Lake Michigan, particularly when predator population abundance exceeds 400 individuals m-2.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 14:19:20