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Titolo:
SURVIVAL ANALYSIS OF 3 CLONES OF BRACHIONUS-PLICATILIS (ROTIFERA)
Autore:
SERRA M; CARMONA MJ; MIRACLE MR;
Indirizzi:
UNIV VALENCIA,AREA ECOL E-46100 BURJASSOT SPAIN
Titolo Testata:
Hydrobiologia
fascicolo: 2, volume: 277, anno: 1994,
pagine: 97 - 105
SICI:
0018-8158(1994)277:2<97:SAO3CO>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
REPRODUCTION; TEMPERATURE; COST;
Keywords:
ROTIFERS; SURVIVAL ANALYSIS; THEORETICAL MORTALITY DISTRIBUTION; AGING; REPRODUCTIVE COST; LIFE TABLES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
M. Serra et al., "SURVIVAL ANALYSIS OF 3 CLONES OF BRACHIONUS-PLICATILIS (ROTIFERA)", Hydrobiologia, 277(2), 1994, pp. 97-105

Abstract

Age-specific survival schedules of females from three genetically different clones of Brachionus plicatilis were analyzed at several environmental conditions in the laboratory. Lifespan showed the expected decrease with increasing temperature, but a general trend with salinity or genotype was not observed. Probability of death increased with age, as tested by polynomial regression analysis of the survival curve and using theoretical mortality distributions. Three two-parameter models (linear-exponential model, Weibull model, and Gompertz model) were fitted to the survival data. Fitting of these models to data was rather poor, but the Gompertz model and, to a lesser extent, the Weibull modelfitted the data better than the linear-exponential model. Parameters obtained from the survival curve analyses were related to other demographic parameters. A significant relationship between the shape parameter of the Gompertz model and the cohort generation time was detected, suggesting, but not proving, an effect of reproductive effort on aging.

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Documento generato il 04/12/20 alle ore 00:43:55