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Titolo:
Temporal organization in locomotor activity of the hypogean loach, Nemacheilus evezardi, and its epigean ancestor
Autore:
Pati, AK;
Indirizzi:
Ravishankar Univ, Sch Life Sci, Raipur 492010, Madhya Pradesh, India Ravishankar Univ Raipur Madhya Pradesh India 492010 Madhya Pradesh, India
Titolo Testata:
ENVIRONMENTAL BIOLOGY OF FISHES
fascicolo: 1-3, volume: 62, anno: 2001,
pagine: 119 - 129
SICI:
0378-1909(200110)62:1-3<119:TOILAO>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEXICAN CAVE FISH; ASTYANAX-FASCIATUS; ENDOGENOUS RHYTHM; SWIMMING ACTIVITY; BEHAVIOR; CHARACIDAE; PISCES; TELEOSTEI;
Keywords:
circadian bimodal rhythm; endogenous oscillators;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Pati, AK Ravishankar Univ, Sch Life Sci, Raipur 492010, Madhya Pradesh, India Ravishankar Univ Raipur Madhya Pradesh India 492010 adesh, India
Citazione:
A.K. Pati, "Temporal organization in locomotor activity of the hypogean loach, Nemacheilus evezardi, and its epigean ancestor", ENV BIOL F, 62(1-3), 2001, pp. 119-129

Abstract

Locomotor activity rhythm in the hypogean population of Nemacheilus evezardi was recorded first under light-to-dark (LD) 12 : 12 h cycle and then DD. The results were compared with that of its epigean counterpart held under comparable regimes. In LD 12 : 12, while hypogean loach exhibited a distinct bimodality in its locomotor activity rhythm, it was altogether absent in the case of epigean population. In hypogean loach, dark-to-light transitionpeak in LD was observed to free-run under DD. The same was not discerniblein case of epigean loach. The locomotor activity rhythm in epigean fish was noticed to free-run in DD either from the dawn peak or dusk peak in LD. It is hypothesized that the hypogean fish still possesses a functional oscillator underlying its overt circadian rhythm in locomotor activity. The ecophysiological significance of these findings is yet to be fully understood.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 20:50:19