Sentences with word «photoperiod»

This includes the correct setting of photoperiod for your reptile pet.

To have an appropriate photoperiod for bearded dragon, an economical way is to switch on and off the lights manually.

Gutzler, S.J., Karom, M. Erwin, W.D., and Albers, H.E. Seasonal regulation of social communication by photoperiod and testosterone: effects of arginine - vasopressi, serotonin, and galanin in the medial preoptic area - anterior hypothalamus.

16S rRNA gene sequencing reveals effects of photoperiod on cecal microbiota of broiler roosters — Jun Wang — PeerJ

Unlike some plants, chiles are not photoperiod sensitive; in other words, their flowering is not triggered by shorter days.

Researchers have undertaken the first high resolution analysis of the daily and seasonal movements of a free - living fish in polar waters, subject to extreme variation in photoperiod and temperature.

Winter photoperiod decreases by two hours from 40 to 54 degree latitude.

Societies memorize the shortest photoperiod (daytime) of the year, the most challenging condition in one year.

«We dug plants up from the field and brought them into warm greenhouses in Illinois and South Dakota every month from October through March,» says Lee, an agronomist in the Department of Crop Sciences at U of I. «The only lighting was the sun, so the plants had to react to the ambient photoperiod, or day length.»

However, we could not fully exclude photoperiod and / or insolation as co-controlling mechanisms.

Arabidopsis plants were grown in a growth chamber maintained at 22 °C with 8 h photoperiod for 4 weeks after 2 days stratification at 4 °C.

Adapted to cold, dark and nutrient - poor environments, below ice and snow, the charr's activity rhythms reflect the above - surface daily photoperiod.

In contrast to a number of phenological studies showing nonlinear relationships between phenology and temperature, due largely to unmet chilling and photoperiod requirements, our findings demonstrate the relationship to be linear and to explain most of the variation in flowering.

Also Known As: Seasonal Flank Alopecia Transmission or Cause: An incompletely understood disorder which causes seasonally recurrent hair loss on the flanks and may involve photoperiod changes in melatonin and prolactin hormone production which then affects hair follicles.

Stress of movement to a new cage, placement of cage in a high traffic area or improper photoperiod may contribute to stress and hence, decreased appetite.

Furthermore fleas did not change their egg production in response to different photoperiods (Metzger and Rust, 1996).

These bulbs can provide a constant or nocturnal source of heat that will not interfere with the natural photoperiod of the animal.

Low output (two percent) bulbs can be used to facilitate a healthy photoperiod for the animals.

Unlike some plants, chiles are not photoperiod...

Anopheles gambiae (Sua2La hybrid) were reared and maintained in an environmental chamber at 27 °C and 75 % relative humidity with 12 - hour light and 12 - hour dark photoperiods, including 30 - minute crepuscular periods at the beginning and end of each light cycle.

Shedding seems to be connected to seasonal temperature, but it is actually governed by photoperiod or day length.

The work was done on a tomato plant in a growth chamber with a constant temperature and 12 - hour on / off photoperiod for 11 days.

Foliage can also be controlled by reducing the daylight portion of the photoperiod, but chiles are pretty much day neutral and I run a constant photoperiod whether the plant is growing or making fruit.

In my small greenhouse, I control relative humidity, temperature, light level, and photoperiod (the relative length of night and day).

Similarly, if you wanted to study environmental factors that influence sleep, you could examine sleeping patterns of different species in the wild and attempt to relate them to differences in temperature, photoperiod, or other factors.

The chemical composition of the microalgae is not an intrinsically constant factor, but varies over a wide range in accordance with the different cultivation factors such as temperature, light (intensity, wavelength and photoperiod), pH of the medium, supply of CO2, concentration and type of nutrients, source and concentration of nitrogen, salinity and growth phase.

Back in Germany he started his doctoral thesis on photoperiod - dependent neuropeptide processing in seasonal mammals at the Department of Animal physiology and received his PhD from the Philipps - University in Marburg in 2008.

Finally, there are modest effects on daily patterns of behavior; while overexpression of Bmal1 in the skeletal muscle does not affect the timing or intensity of daily rhythms of wheel running, overexpression of Bmal1 does lead to an increase in general locomotor activity, particularly at the light - dark transitions and middle of each photoperiod.

«The charr's daily activity rhythms mirrored the photoperiod, even under ice and snow, for most of the year,» Kate Hawley, researcher in NIVA and first author of the recent publication, explains.

Additionally, body fat percentages in wild mammals typically vary by age and sex and also seasonally in a cyclic waxing and waning manner with changing availability of food sources and the photoperiod (Figure 5)(57,58).

Understanding dog shedding: Shedding is affected by hormonal changes that are tied to photoperiod (day length).

In captivity, if the photoperiod (daytime length) is kept at 12 - 14 hours and the environmental conditions stay warm, then hibernation is skipped.

The photoperiod duration on day and night is depends on the season.

In the wild, the photoperiod duration of bearded dragon varies with the season.

Bearded dragon experience day and night cycle, which is called the photoperiod.

In captivity, if the photoperiod (day length) is kept at 12 - 14 hours and the environmental conditions are warm, then hibernation is skipped.

Shedding is mainly influenced by sunlight or photoperiod, which is the number of hours a cat is exposed to the sun in a day, hormones, genetics and nutrition.

Shedding is controlled by hormonal changes that are tied to photoperiod (day length) and is influenced by level of nutrition and general state of health.

It is crucial that owners understand the levels of ultraviolet light herps require, specifically UVA and UVB, as well as the duration of the day / night cycle known as the photoperiod.

Deciduous trees do protect themselves by dropping their leaves, but since this process is dominated by photoperiod and climatic conditions, there's no way they can just jettison all their leaves immediately in response to a freak storm.