CROWING RESPIRATION.

Circadian clock determines the timing of rooster crowing

of a widespread species than to be faced with the challenge of conserving every population because all are distinctive. Undoubtedly, some reptile species have already gone extinct before we even knew they existed. But a lot remain to be discovered: for example, a single square kilometre of Australian desert can contain 14 co-existing species of the lizard genus Ctenotus (many of them so similar...

[Respiration].

Cisplatin cytotoxicity is dependent on mitochondrial respiration in Saccharomyces cerevisiae

Objective(s): To understand the role of mitochondrial respiration in cisplatin sensitivity, we have employed wild-type and mitochondrial DNA depleted Rho0 yeast cells. Materials and Methods: Wild type and Rho0 yeast cultured in fermentable and non-fermentable sugar containing media, were studied for their sensitivity against cisplatin by monitoring growth curves, oxygen consumption, pH changes ...

Dynamics of crowing development in the domestic Japanese quail (Coturnix coturnix japonica).

Species-specific behaviours gradually emerge, via incomplete patterns, to the final complete adult form. A classical example is birdsong, a learned behaviour ideally suited for studying the neural and molecular substrates of vocal learning. Young songbirds gradually transform primitive unstructured vocalizations (subsong, akin to human babbling) into complex, stereotyped sequences of syllables ...

Energy cost of an avian vocal display: crowing in red junglefowl

Displays are important components of social behaviour and are potential targets for sexual selection. Females may prefer males with particular behavioural repertoires, and several models of sexual selection suggest that males with elaborate or prolonged courtship displays could be indicating their quality to females (Kirkpatrick & Ryan 1991; Maynard Smith 1991). Males may also use displays in i...