Temporal and spatial differences in smolting among Oncorhynchus nerka populations throughout fresh and seawater migration

2018 ◽  
Vol 93 (3) ◽  
pp. 510-518 ◽  
Author(s):  
Marley C. Bassett ◽  
David A. Patterson ◽  
J. Mark Shrimpton
Keyword(s):  
Oncorhynchus Nerka ◽  
Spatial Differences ◽  
Temporal And Spatial

scholarly journals TEMPERATURE-SENSITIVE MUTATIONS OF THE NOTCH LOCUS IN DROSOPHILA MELANOGASTER

Genetics ◽  
1975 ◽  
Vol 81 (1) ◽  
pp. 143-162 ◽  
Author(s):  
David L Shellenbarger ◽  
J Dawson Mohler
Keyword(s):  
Temperature Shift ◽  
Temperature Sensitive ◽  
Spatial Differences ◽  
Region Temperature ◽  
Complex Locus ◽  
Notch Locus ◽  
Temporal And Spatial ◽  
Chemical Conditions ◽  
Interallelic Complementation ◽  
The Right

ABSTRACT Temperature-conditional mutations of the Notch locus were characterized in an attempt to understand the organization of a "complex locus" and the control of its function in development. Among 21 newly induced Notch alleles, about one-half are temperature-conditional for some effects, and three are temperature-sensitive for viability. One temperature-sensitive lethal, l(1)Nts1, is functionally non-complementing for all known effects of Notch locus mutations and maps at a single site within the locus. Among the existing alleles involved in complex patterns of interallelic complementation, Ax59d5 is found to be temperature-sensitive, while fag, spl, and l(1)N are temperature-independent. Whereas temperature-sensitive alleles map predominantly to the right-most fifth of the locus, fag, spl, and l(1)N are known to map to the left of this region. Temperature-shift experiments demonstrate that fag, spl, and l(1)N cause defects at specific, non-overlapping times in development.—We conclude (1) that the Notch locus is a single cistron (responsible for a single functional molecule, presumably a polypeptide); (2) that the right-most fifth of the locus is, at least in part, the region involved in coding for the Notch product; (3) that the complexity of interallelic complementation is a developmental effect of mutations that cause defects at selected times and spaces, and that complementation occurs because the mutant defects are temporally and spatially non-overlapping; and (4) that mutants express selected defects due to critical temporal and spatial differences in the chemical conditions controlling the synthesis or function of the Notch product. The complexity of the locus appears to reside in controlling the expression (synthesis or function) of the Notch product in development.

Dissolved Inorganic Nitrogen Fluxes at Sediment-Water Interface in Yangtze Estuarine Tidal Flat

2013 ◽  
Vol 726-731 ◽  
pp. 288-295 ◽  
Author(s):  
Huan Guang Deng ◽  
Dong Qi Wang ◽  
Zhen Lou Chen
Keyword(s):  
Tidal Flat ◽  
Environmental Gradients ◽  
Inorganic Nitrogen ◽  
Yangtze Estuary ◽  
Water Interface ◽  
Dissolved Inorganic Nitrogen ◽  
Overlying Water ◽  
Spatial Differences ◽  
Estuary Sediment ◽  
Temporal And Spatial

Yangtze estuary data, collected over three years, indicates that the temporal and spatial distributions of the environmental gradients reflect complicated seasonal changes and spatial differences in the exchange flux of the dissolved inorganic nitrogen (DIN= NH4++ NO3-+ NO2-) across the sediment-water interface. Overall in northern sites of Yangtze estuary, sediment was a source of ammonium (NH4+) (-3.67~10.65 mmol·m-2·d-1) probably because of higher salinities. Sediment was a sink for NH4+ in southern sites (-18.45~3.33 mmol·m-2·d-1) during most years. The exchange behavior of nitrate (NO3-) showed temporal and spatial variation from the upper to lower estuary and ranged from-32.8 mmol·m-2·d-1 to 35.8 mmol·m-2·d-1. The interface exchange direction of ammonium was affected by NH4+ concentration, but the relationship between NO3- concentration and the direction of flux was not obvious. The concentration of nitrite (NO2-) was very low and its interface flux was not related to DIN concentration. Overall, the sediment of Yangtze Estuarine tidal flat was a source of DIN to overlying water in the spring, but a sink for DIN during the other three seasons of the year.

scholarly journals Temporal and spatial differences in three-egg clutch frequency of the African Black Oystercatcher

Ostrich ◽  
2015 ◽  
Vol 86 (1-2) ◽  
pp. 35-41 ◽  
Author(s):  
Dane M Paijmans ◽  
Douglas Loewenthal ◽  
Peter G Ryan ◽  
Philip AR Hockey
Keyword(s):  
Spatial Differences ◽  
African Black ◽  
Temporal And Spatial

scholarly journals Temporal and Spatial Differences in the Feeding Ecology of the Spanish Imperial EagleAquila adatbertiDuring the Non-Breeding Season: Effects of the Rabbit Population Crash

2009 ◽  
Vol 44 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Roberto Sánchez ◽  
Antoni Margalida ◽  
Luis Mariano González ◽  
Javier Oria
Keyword(s):  
Breeding Season ◽  
Feeding Ecology ◽  
Rabbit Population ◽  
Population Crash ◽  
Spatial Differences ◽  
Temporal And Spatial

Temporal and spatial differences in the emission of calls by pipistrelle batsPipistrellus pipistrellus andP. pygmaeus

2007 ◽  
Vol 52 (1) ◽  
pp. 55-64 ◽  
Author(s):  
Nick C. Downs ◽  
Paul A. Racey
Keyword(s):  
Spatial Differences ◽  
Temporal And Spatial

Temporal and spatial differences in expression of TrkB isoforms in rat retina during constant light exposure

2007 ◽  
Vol 85 (3) ◽  
pp. 346-355 ◽  
Author(s):  
Nobuharu Asai ◽  
Toshiaki Abe ◽  
Takae Saito ◽  
Hajime Sato ◽  
Sei-ichi Ishiguro ◽  
...  
Keyword(s):  
Light Exposure ◽  
Constant Light ◽  
Rat Retina ◽  
Spatial Differences ◽  
Temporal And Spatial

Temporal and spatial differences in the elemental composition of atmospheric aerosols

1980 ◽  
Vol 14 (2) ◽  
pp. 113-128 ◽  
Author(s):  
K.H. Nottrodt ◽  
H.W. Georgii ◽  
K.O. Groeneveld
Keyword(s):  
Elemental Composition ◽  
Atmospheric Aerosols ◽  
Spatial Differences ◽  
Temporal And Spatial

Muskoxen in the high Arctic-temporal and spatial differences in body size

2007 ◽  
Vol 272 (2) ◽  
pp. 227-234 ◽  
Author(s):  
B. Lyberth ◽  
A. Landa ◽  
J. Nagy ◽  
A. Loison ◽  
C. R. Olesen ◽  
...  
Keyword(s):  
Body Size ◽  
High Arctic ◽  
Spatial Differences ◽  
Temporal And Spatial
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