Results 281 to 290 of about 230,941 (392)

Secretion of LH in rams exposed to two different photoperiods [PDF]

, 1976
G. A. Lincoln
openalex   +1 more source

Behavior of Rio Sao Francisco Piranhas in Response to Changes in Space and Density

Zoo Biology, EarlyView.
ABSTRACT Previous observations of Rio Sao Francisco piranhas (Pygocentrus piraya) at Cleveland Metroparks Zoo revealed frequent aggressive interactions, which were associated with the injury and death of some individuals. Fishes are known to increase aggressive behavior when available space is limited.
Ronald G. Oldfield, Josie E. Thal, Nick J. Zarlinga, Kristen E. Lukas, Jason D. Wark   +4 more
wiley   +1 more source

The tps5, tps10 and tps11 class II trehalose phosphate synthase mutants alter carbon allocation to starch and organic and amino acids at two different photoperiods in Arabidopsis. [PDF]

Planta
Ruiz-Castillo AC, Bonilla-Córdoba DJ, Cisneros-Hernández I, Martínez-Gallardo N, Ramírez-Chávez E, Délano-Frier J.   +5 more
europepmc   +1 more source

Relative roles of temperature and photoperiod as drivers of metabolic flexibility in dark-eyed juncos

Journal of Experimental Biology, 2014
D. Swanson, Yufeng Zhang, Jinsong Liu, C. Merkord, Marisa O. King   +4 more
semanticscholar   +1 more source

Coral reef fish visual adaptations to a changing world

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Coral reef ecosystems show fluctuations in their prevailing light environment in response to both regular (e.g. between seasons) and more prevalent stochastic events (e.g. human‐induced sediment runoff).
Abigail Shaughnessy, Fabio Cortesi
wiley   +1 more source

Temporal and Spatial Patterns of Mating in <i>Rhodnius prolixus</i>. [PDF]

Insects
Divito F, De Simone GA, Pompilio L, Manrique G.   +3 more
europepmc   +1 more source

Photoperiodism and Age as Factors Affecting the Protein Requirements of Laying Pullets

, 1968
D.J. Bray
openalex   +1 more source

Guralnick LJ, PA Rorabaugh, Z Hanscom (1984) Influence of photoperiod and leaf age on Crassulacean acid metabolism in Portulacaria afra (L.) Jacq. [PDF]

, 1984
Guralnick, Lonnie J., Hanscom, Zac, Rorabaugh, Patricia A.   +2 more
core   +1 more source

Vision at high latitudes: High sensitivity without specific boreal adaptations in photoreception in reindeer (Rangifer tarandus L.)

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The light climate at high latitudes, in particular the extended twilight of winter and the reduced diel variation in light level in midsummer and midwinter, potentially constrains visual function and the synchronisation of temporal organisation in polar species. In this
Nicholas J. C. Tyler, Robert A. E. Fosbury, David Hazlerigg, Christopher Hogg   +3 more
wiley   +1 more source

Molecular genetic regulation of the vegetative-generative transition in wheat from an environmental perspective. [PDF]

Ann Bot
Kiss T, Horváth ÁD, Cseh A, Berki Z, Balla K, Karsai I.   +5 more
europepmc   +1 more source