ISSN:
1573-5117
Keywords:
Chirocephalus
;
metabolic potential
;
intermittent lake
;
ecology
;
physiology
;
temperature
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Electron transport system (ETS) activity was measured in Chirocephalus croaticus from the intermittent lake, Petelinjsko Jezero. The ETS activities were measured at 5, 10, 15, 20, and 25 °C, and were studied separately in juveniles, females and males. Juveniles had significantly higher activity than adults at a standard temperature of 20 °C. The mass-specific ETS activity decreased with increasing size of the animals; the value b was 0.787. Respiration rates (R) were determined at 20 °C and the ratio ETS/R (±standard deviation) for C. croaticus was 1.43±0.46 (n=38). ETS activity increased with temperature. Females had higher Q10 than males in higher temperature range (t-test; t=2.50; d.f.=8; p〈0.05). Activation energy Ea was higher for females than males (t-test; t=2.35; d.f.=8; p〈0.05). Females exhibited lower ETS activity than males over the lower temperature range, but their ETS could function more efficient at higher temperature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1026507024238
