Sökning: onr:"swepub:oai:DiVA.org:lnu-54689" >
Metabolic and physi...
Metabolic and physiological changes in Prymnesium parvum when grown under, and grazing on prey of, variable nitrogen:phosphorus stoichiometry
-
- Lundgren, Veronica (författare)
- Linnaeus University,Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS
-
- Glibert, Patricia M. (författare)
- University of Maryland, USA
-
- Granéli, Edna (författare)
- Linnaeus University,Lund University,Lunds universitet,Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Lund University;Florida Gulf Coast University, USA,Ctr Ecol & Evolut Microbial Model Syst EEMiS,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science
-
visa fler...
-
- Vidyarathna, Nayani K. (författare)
- Linnaeus University,Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS
-
- Fiori, Emanuela (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),University of Bologna, Italy,Ctr Ecol & Evolut Microbial Model Syst EEMiS
-
- Ou, Linjian (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Jinan University, China,Ctr Ecol & Evolut Microbial Model Syst EEMiS
-
- Flynn, Kevin J. (författare)
- Swansea University, UK
-
- Mitra, Aditee (författare)
- Swansea University, UK
-
- Stoecker, Diane K. (författare)
- University of Maryland, USA
-
- Hansen, Per J. (författare)
- University of Copenhagen, Denmark
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2016
- 2016
- Engelska.
-
Ingår i: Harmful Algae. - : Elsevier BV. - 1568-9883 .- 1878-1470. ; 55, s. 1-12
- Relaterad länk:
-
http://dx.doi.org/10...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://lup.lub.lu.s...
-
visa färre...
Abstract
Ämnesord
Stäng
- Mixotrophy is found in almost all classes of phytoplankton in a wide range of aquatic habitats ranging from oligotrophic to eutrophic marine and freshwater systems. Few studies have addressed how the nutritional status of the predator and/or the prey affects mixotrophic metabolism despite the realization that mixotrophy is important ecologically. Laboratory experiments were conducted to examine changes in growth rates and physiological states of the toxic haptophyte Prymnesium parvum when fed Rhodomonas sauna of varying nutritional status. Haemolytic activity of P. parvum and prey mortality of R. sauna were also measured. P. parvum cultures grown to be comparatively low in nitrogen (low-N), phosphorus (low-P) or low in both nutrients (low-NP) were mixed with low-NP, low-N, and low-P R. saline in all possible combinations, i.e., a 3 x 3 factorial design. N deficiency was obtained in the low-N cultures, while true P deficiency may not have been obtained in the low-P cultures. Mortality rates of R. salina (both due to ingestion and/or cell rupture as a function of grazing or toxic effects) were higher when R. sauna cells were low-P, N-rich, regardless of the nutritional state of P. parvum. Mortality rates were, however, directly related to the initial prey:predator cell ratios. On the other hand, growth of the predator was a function of nutritional status and a significant positive correlation was observed between growth rates of P. parvum and cell-specific depletion rates of N, whereas no such relationship was found between P. parvum growth rates and depletion rates of P. In addition, the greatest changes in chlorophyll content and stoichiometric ratios of P. parvum were observed in high N:P conditions. Therefore, P. parvum may show enhanced success under conditions of higher inorganic N:P, which are likely favored in the future due to increases in eutrophication and altered nutrient stoichiometry driven by anthropogenic nutrient loads that are increasingly enriched in N relative to P. (C) 2016 Elsevier B.V. All rights reserved.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Mixotrophy
- Variable stoichiometry
- Nitrogen
- Phosphorus
- Prymnesium parvum
- Akvatisk ekologi
- Aquatic Ecology
- Mixotrophy
- Nitrogen
- Phosphorus
- Prymnesium parvum
- Variable stoichiometry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Lundgren, Veroni ...
-
Glibert, Patrici ...
-
Granéli, Edna
-
Vidyarathna, Nay ...
-
Fiori, Emanuela
-
Ou, Linjian
-
visa fler...
-
Flynn, Kevin J.
-
Mitra, Aditee
-
Stoecker, Diane ...
-
Hansen, Per J.
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Biologi
-
och Ekologi
- Artiklar i publikationen
-
Harmful Algae
- Av lärosätet
-
Linnéuniversitetet
-
Lunds universitet