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Titolo:
CHANGES IN THE RATE OF FOOD VACUOLE FORMATION DURING EARLY CLONAL LIFE OF PARAMECIUM-PRIMAURELIA
Autore:
RAMOINO P;
Indirizzi:
UNIV GENOA,IST ZOOL,VIA BALBI 5 I-16126 GENOA ITALY
Titolo Testata:
Bollettino di zoologia
fascicolo: 2, volume: 60, anno: 1993,
pagine: 143 - 146
SICI:
0373-4137(1993)60:2<143:CITROF>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Keywords:
CILIATES; FOOD VACUOLES; CLONAL LIFE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
P. Ramoino, "CHANGES IN THE RATE OF FOOD VACUOLE FORMATION DURING EARLY CLONAL LIFE OF PARAMECIUM-PRIMAURELIA", Bollettino di zoologia, 60(2), 1993, pp. 143-146

Abstract

The rate of food vacuole formation was shown to vary in Paramecium primaurelia during early clonal life; under constant external environmental conditions, remarkable changes occurred in young cells within a few fissions. Studies on different life span clones showed an increased rate, sometimes gradual and constant, and sometimes interrupted by a decrease, followed first by a reduced, then by a constant number of food vacuoles per unit of time. The decrease in food vacuole number, which was not followed by recovery of the food uptake rate, was related toa decline in fission rate. An explanation of the varying rate of foodvacuole formation is discussed in terms of a known change in macronuclear DNA content during clonal life. Cells with a high DNA content were supposed to require less food to complete their cell cycle than cells with a low DNA content.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 06:19:55