wherein the living space comprises an incubator for hatching hatching eggs, wherein the bioresponse variables are measured and controlled in a physical and / or chemical manner, for example in the form of optical, electrical, magnetic bioresponse signals, acoustics or mechanics, or combinations of...
Abstract: The effects of water temperature on egg laying and hatching in vitro were investigated, and egg laying and development in vivo at 20℃ were also characterised. The results indicated a positive correlation between mean egg production and tempera
The effects of the duration and degree of chilling, and the temperature of incubation, on hatching of winter eggs of Panonychus ulmi (Koch) were investigated. For chilling, 0°C and 5°C were more effective than — 5° and 9°, and the limits for the reaction were close to — 10°...
In all experiments best hatchability was. obtained by holding eggs at 50掳 F. ; in some cases warming the eggs at room temp. (75 掳 80掳 F. ) for 1 day prior to setting improved th...关键词: Hatchability, Eggs 被引量: 30 年份: 1960 ...
The hatchability, embryonic development of eggs and growth of yolk sac fry were studied under controlled conditions. It was shown that the upper lethal temperature for O. mossambicus eggs was above 40°C and the lower lethal temperature between 11°C and IVC. For yolk sac fry these values ...
Hatching eggs were obtained from a commercial flock of Ross × Ross 308 broiler breeders at 44 wk of age. A total of 2,520 eggs were stored for 2 d at 17°C and 75% RH before being set for incubation in 3 identical laboratory incubators (Çimuka, Ankara, Turkey). A single-stage ...
However, in many reptiles and fish, sex is instead influenced by how warm or cool eggs are before hatching. What might life be like for humans if sex was likewise under the sway of temperature? The fact it was even possible to control the sex of animals using heat or cold was first ...
It, howe increased with 15% after hatching. 3. 3. Embryos and hatchlings increased their V O 2, following exposure to increasing temperatures. At T a, between 25 and 32°C Q 10 were 1.83 and 2.3 for the eggs and hatchlings, respectively. The Q 10 decreased to 1.27 for the eggs ...
Hatching of cladoceran resting eggs: temperature and photoperiod Summary 1. We identified temperature and photoperiod conditions under which the hatching of 45 cladoceran species could be elicited. Identification of appr... J Vandekerkhove,S Declerck,L Brendonck,... - 《Freshwater Biology》 被引量...
The temperature which induced hatching varied among the nine species studied. These results are discussed in relation to seasonality and temperature preferences previously recorded for the most abundant species. Resting egg densities of 2.2–13.9 eggs cm 3 were recorded in the upper 5 cm of sediment...