COMPARATIVE ANALYSIS OF METHODS FOR MEASUREMENTS OF FOOD INTAKE AND UTILIZATION USING THE SOYBEAN LOOPER, PSEUDOPLUSIA INCLUDENS AND ARTIFICIAL MEDIA

作者: Jose RP Parra , Marcos Kogan , None

DOI: 10.1111/J.1570-7458.1981.TB03583.X

关键词: CHROMIC OXIDEFood scienceFood intakeBiologyPseudoplusia

摘要: An analysis of intake and utilization an artificial medium by larvae the soybean looper, Pseudoplusia includens Walker, Lepidoptera: Noctuidae, was performed using 4 methods: standard gravimetric, chromic oxide, Calco Oil Red, 14C-glucose. Each method used in conjunction with gravimetry. The relative merits indirect methods were analyzed terms precision accuracy for ECI ECD estimation, cost, overall versatility. Only gravimetric combined ca. 80% estimation low cost maximum Red at 0.1% w/v detrimental to larvae. Cr2O3 caused reduced but conversion increased resulting normal development growth radioisotopic had advantage providing a direct means measuring expired CO2. need operate under totally enclosed system, however, poses some serious difficulties use radioisotopes. There seems be little any proposed methods, except if there are unusual separating excreta from medium. ZUSAMMENFASSUNG Methodenvergleich fur die Futteraufnahme und Futterverwertung unter Verwendung von kunstlichen Nahrmedien Eine Analyse der Aufnahme Verwertung eines Nahrmediums durch Raupen wurde durchgefuhrt mit vier Methoden: Standard-gravimetrisch, Chromoxyd, 14C-Glucose. Jede Methode zusammen Standard-gravimetrischen verwendet. Die Vorteile indirekten Methoden wurden anhand Genauigkeit Richtigkeit ECI- ECD-Schatzung, Kosten allgemeinen Anwendbarkeit untersucht. Einzig gravimetrische erbrachte gleichzeitig etwa Schatzung ECD, niedrige grosste*** Verwendbarkeit. war bei 0,1% g/v schadlich. verminderte Futteraufnahme, erhohte aber Verwertung, zu normaler Entwicklung Wachstum fuhrte Radioisotopenmethode lieferte als Vorteil eine direkte Messung des abgegebenen Ernste Schwierigkeiten bietet Notwendigkeit einem vollstandig abgeschlossenen System arbeiten. Offenbar besitzen alle vorgeschlagenen wenig Vorteile, es sei denn Trennung Exkrete vom Medium aussergewohnlich schwierig.

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