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Statements

Subject Item
n2:RIV%2F60077344%3A_____%2F13%3A00394495%21RIV14-AV0-60077344
rdf:type
skos:Concept n13:Vysledek
dcterms:description
Field investigation of seasonal variation of filtering setae number (FSN) in the filtering screens of D. galeata showed a clear tendency toward low FSN in animals with low temperature and food levels (an over-wintering population and a deep-hypolimnion-inhabiting part of the population). Laboratory experiments were carried out to uncouple the effects of temperature and food level on the size of neonates and FSN in their filtering apparatus. Results of the first experiments indicated that temperature is the main factor inducing the changes in FSN and the induction takes place during embryogenesis. These results were confirmed in the second experiment. Eggs from the same clutch incubated in vitro at temperatures of 19°C, 10°C, and 6°C developed into neonates with smaller carapace length with decreasing temperature. Smaller neonates had lower FSN in their filtering screens. These results provide experimental evidence of temperature mediated embryonic induction in Daphnia galeata and contribute to an understanding of the proximate causes of the morphological features observed in over-wintering populations in the field. Field investigation of seasonal variation of filtering setae number (FSN) in the filtering screens of D. galeata showed a clear tendency toward low FSN in animals with low temperature and food levels (an over-wintering population and a deep-hypolimnion-inhabiting part of the population). Laboratory experiments were carried out to uncouple the effects of temperature and food level on the size of neonates and FSN in their filtering apparatus. Results of the first experiments indicated that temperature is the main factor inducing the changes in FSN and the induction takes place during embryogenesis. These results were confirmed in the second experiment. Eggs from the same clutch incubated in vitro at temperatures of 19°C, 10°C, and 6°C developed into neonates with smaller carapace length with decreasing temperature. Smaller neonates had lower FSN in their filtering screens. These results provide experimental evidence of temperature mediated embryonic induction in Daphnia galeata and contribute to an understanding of the proximate causes of the morphological features observed in over-wintering populations in the field.
dcterms:title
Over-wintering Daphnia: uncoupling the effects of temperature and food on offspring size and filtering screen morphology in D. galeata Over-wintering Daphnia: uncoupling the effects of temperature and food on offspring size and filtering screen morphology in D. galeata
skos:prefLabel
Over-wintering Daphnia: uncoupling the effects of temperature and food on offspring size and filtering screen morphology in D. galeata Over-wintering Daphnia: uncoupling the effects of temperature and food on offspring size and filtering screen morphology in D. galeata
skos:notation
RIV/60077344:_____/13:00394495!RIV14-AV0-60077344
n13:predkladatel
n19:ico%3A60077344
n4:aktivita
n11:P n11:I
n4:aktivity
I, P(GA206/09/1325)
n4:cisloPeriodika
5
n4:dodaniDat
n6:2014
n4:domaciTvurceVysledku
n5:3190382 n5:2747456
n4:druhVysledku
n9:J
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n18:predkladatel
n4:idSjednocenehoVysledku
95043
n4:idVysledku
RIV/60077344:_____/13:00394495
n4:jazykVysledku
n8:eng
n4:klicovaSlova
Daphnia size; filtering screens; phenotypic plasticity; embryonic induction; temperature effect
n4:klicoveSlovo
n7:Daphnia%20size n7:embryonic%20induction n7:filtering%20screens n7:temperature%20effect n7:phenotypic%20plasticity
n4:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n4:kontrolniKodProRIV
[D3A1CE364C69]
n4:nazevZdroje
Journal of Plankton Research
n4:obor
n17:DA
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
2
n4:projekt
n16:GA206%2F09%2F1325
n4:rokUplatneniVysledku
n6:2013
n4:svazekPeriodika
35
n4:tvurceVysledku
Seďa, Jaromír Macháček, Jiří
n4:wos
000323966900012
s:issn
0142-7873
s:numberOfPages
11
n12:doi
10.1093/plankt/fbt060