Results 11 to 20 of about 118,663 (214)

The effect of photoperiod and high fat diet on the cognitive response in photoperiod-sensitive F344 rats [PDF]

open access: yes, 2021
YesIn many species, seasonal changes in day length (photoperiod) have profound effects on physiology and behavior. In humans, these include cognitive function and mood.
Tedder, Andrew   +7 more
core   +1 more source

Photoperiod decelerates the advance of spring phenology of six deciduous tree species under climate warming [PDF]

open access: yes, 2021
Vegetation phenology in spring has substantially advanced under climate warming, consequently shifting the seasonality of ecosystem process and altering biosphere–atmosphere feedbacks.
Hans J. De Boeck   +26 more
core   +1 more source

The effect of a 24-hour photoperiod on the survival, growth and swim bladder inflation of pre-flexion yellowfin tuna (Thunnus albacares) larvae [PDF]

open access: yes, 2011
The effects of two different continuous photoperiod regimes on survival, growth and swim bladder inflation of pre-flexion yellowfin tuna (Thunnus albacares) larvae were investigated. Each photoperiod regime was tested twice with a different larval cohort
J.D. Stieglitz   +23 more
core   +1 more source

Attainment of reproductive competence, phase transition, and quantification of juvenility in mutant genetic screens [PDF]

open access: yes, 2014
Plant development between seedling emergence and flowering is characterized by a series of successive qualitative phases: (1) a post embryonic photoperiodinsensitive phase, during which plants are insensitive to photoperiod; (2) a photoperiod ...
Matsoukas, Ioannis G.   +2 more
core   +1 more source

Genetic dissection of photoperiod response based on GWAS of pre-anthesis phase duration in spring barley [PDF]

open access: yes, 2014
Heading time is a complex trait, and natural variation in photoperiod responses is a major factor controlling time to heading, adaptation and grain yield.
Raj K Pasam   +23 more
core   +2 more sources

Short photoperiod-induced decrease of histamine H3 receptors facilitates activation of hypothalamic neurons in the Siberian Hamster [PDF]

open access: yes, 2009
Nonhibernating seasonal mammals have adapted to temporal changes in food availability through behavioral and physiological mechanisms to store food and energy during times of predictable plenty and conserve energy during predicted shortage.
Bartness, Timothy J.   +7 more
core   +1 more source

Photoperiod-Dependent Expression of MicroRNA in Drosophila [PDF]

open access: yes, 2022
Like many other insects in temperate regions, Drosophila melanogaster exploits the photoperiod shortening that occurs during the autumn as an important cue to trigger a seasonal response.
Francis, Amanda   +20 more
core   +3 more sources

Varietal diversity of Sri Lankan traditional rice based on sensitivity to temperature and photoperiod at vegetative stage [PDF]

open access: yes, 2019
Photoperiod and temperature are two important environmental factors affecting vegetative growth and yield of rice. The varietal diversity based on the response to temperature and photoperiod during vegetative growth was determined in a core collection of
Seneweera, Saman   +3 more
core   +1 more source

Dawn and photoperiod sensing by phytochrome A [PDF]

open access: yes, 2018
In plants, light receptors play a pivotal role in photoperiod sensing, enabling them to track seasonal progression. Photoperiod sensing arises from an interaction between the plant's endogenous circadian oscillator and external light cues.
Imaizumi, T.   +6 more
core   +1 more source

Long photoperiod impairs learning in male but not female medaka [PDF]

open access: yes, 2021
Day length in conjunction with seasonal cycles affects many aspects of animal biology. We have studied photoperiod-dependent alterations of complex behavior in the teleost, medaka (Oryzias latipes), a photoperiodic breeder, in a learning paradigm whereby
Foulkes N. S.   +20 more
core   +3 more sources

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