Interactive effects of water temperature and stoichiometric food quality on Daphnia pulicaria

2020 ◽  
Author(s):  
Cody W. E. Starke ◽  
Catriona L. C. Jones ◽  
Wesley S. Burr ◽  
Paul C. Frost
Keyword(s):  
Water Temperature ◽  
Food Quality ◽  
Interactive Effects ◽  
Daphnia Pulicaria

scholarly journals Evaluation of the interactive effects of air exposure duration and water temperature on the condition and survival of angled and released fish

2007 ◽  
Vol 86 (2-3) ◽  
pp. 169-178 ◽  
Author(s):  
Andrew J. Gingerich ◽  
Steven J. Cooke ◽  
Kyle C. Hanson ◽  
Michael R. Donaldson ◽  
Caleb T. Hasler ◽  
...  
Keyword(s):  
Water Temperature ◽  
Exposure Duration ◽  
Interactive Effects ◽  
Air Exposure

Interactive effects of food quality, temperature and rearing time on condition of juvenile black bream Acanthopagrus butcheri

2010 ◽  
Vol 76 (10) ◽  
pp. 2455-2468 ◽  
Author(s):  
B. D. Walther ◽  
T. S. Elsdon ◽  
B. M. Gillanders
Keyword(s):  
Food Quality ◽  
Interactive Effects ◽  
Black Bream ◽  
Acanthopagrus Butcheri

scholarly journals Interactive effects of temperature and light on reattachment success in the brown alga Fucus radicans

2019 ◽  
Vol 62 (1) ◽  
pp. 43-50
Author(s):  
Ellen Schagerström ◽  
Tiina Salo
Keyword(s):  
High Temperature ◽  
Water Temperature ◽  
Asexual Reproduction ◽  
Net Primary Production ◽  
Light Level ◽  
Interactive Effects ◽  
Low Light ◽  
Dispersal Capacity ◽  
Light Levels ◽  
The Baltic

Abstract Fucus radicans is an endemic habitat-forming brown macroalga in the Baltic Sea that commonly complements its sexual reproduction with asexual reproduction. Asexual reproduction in F. radicans takes place through formation of adventitious branches (hereafter fragments), but the exact mechanisms behind it remain unknown. We assessed experimentally the importance of two environmental factors determining the re-attachment success of F. radicans fragments. By combining different light conditions (daylength and irradiance; high or low light) and water temperature (+14°C and +4°C), we mimicked ambient light and temperature conditions of winter, spring/autumn and summer for F. radicans. Fragments were able to re-attach in all tested conditions. Temperature and light had an interactive impact on re-attachment: the combination of high temperature and high light level resulted in the highest re-attachment success, while light level had no effects on re-attachment success in cooler water temperature and the re-attachment success in high temperature under low light levels was very low. The results suggest that rhizoid formation, and thus re-attachment success, may depend on the net primary production (metabolic balance) of the fragment. However, whether the re-attachment and asexual reproduction success simply depends on photosynthetic capacity warrants further mechanistic studies. Understanding the mechanisms of asexual reproduction in F. radicans is important in order to assess the dispersal capacity of this foundation species.

scholarly journals Interactive effects of genotype and food quality on consumer growth rate and elemental content

Ecology ◽  
2017 ◽  
Vol 98 (5) ◽  
pp. 1399-1408 ◽  
Author(s):  
Clay Prater ◽  
Nicole D. Wagner ◽  
Paul C. Frost
Keyword(s):  
Growth Rate ◽  
Food Quality ◽  
Interactive Effects ◽  
Elemental Content

Interactive effects of dietary palm oil concentration and water temperature on lipid digestibility in rainbow trout, Oncorhynchus mykiss

Lipids ◽  
2003 ◽  
Vol 38 (10) ◽  
pp. 1031-1038 ◽  
Author(s):  
Wing-Keong Ng ◽  
Patrick J. Campbell ◽  
James R. Dick ◽  
J. Gordon Bell
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Water Temperature ◽  
Palm Oil ◽  
Interactive Effects ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Oil Concentration ◽  
Lipid Digestibility

Seasonal adaptations of Daphnia pulicaria swimming behaviour: the effect of water temperature

Hydrobiologia ◽  
2010 ◽  
Vol 661 (1) ◽  
pp. 317-327 ◽  
Author(s):  
Joshua J. Ziarek ◽  
Ai Nihongi ◽  
Takeyoshi Nagai ◽  
Marco Uttieri ◽  
J. Rudi Strickler
Keyword(s):  
Water Temperature ◽  
Swimming Behaviour ◽  
Daphnia Pulicaria ◽  
Effect Of Water ◽  
Seasonal Adaptations

scholarly journals Experimental assessment of environmental influences on the stable isotopic composition of <i>Daphnia pulicaria</i> and their ephippia

2015 ◽  
Vol 12 (3) ◽  
pp. 2573-2606
Author(s):  
J. Schilder ◽  
C. Tellenbach ◽  
M. Möst ◽  
P. Spaak ◽  
M. van Hardenbroek ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Water Temperature ◽  
Carbon Isotopic Composition ◽  
Daphnia Pulicaria ◽  
Underlying Assumption ◽  
Δ13c Values ◽  
Stable Isotopic Composition ◽  
Significant Difference ◽  
Stable Isotopic ◽  
A Minor

Abstract. The stable isotopic composition of fossil resting eggs (ephippia) of Daphnia spp. is being used to reconstruct past environmental conditions in lake ecosystems. However, the underlying assumption that the stable isotopic composition of the ephippia reflects the stable isotopic composition of the parent Daphnia, of their diet and of the environmental water have yet to be confirmed in a controlled experimental setting. We performed experiments with Daphnia pulicaria cultures, which included a control treatment conducted at 12 °C in filtered lake water and with a diet of fresh algae, and three treatments in which we manipulated the stable carbon isotopic composition (δ13C value) of the algae, stable oxygen isotopic composition (δ18O value) of the water, and the water temperature, respectively. The stable nitrogen isotopic composition (δ15N value) of the algae was similar for all treatments. At 12 °C, differences in algal δ13C values and in δ18O values of water are reflected in those of Daphnia. The differences between ephippia and Daphnia stable isotope ratios were similar in the different treatments (δ13C: + 0.2 ± 0.4‰ (SD); δ15N: -1.6 ± 0.4‰; δ18O: -0.9 ± 0.4‰) indicating that changes in dietary δ13C and δ18O values of water are passed on to these fossilizing structures. A higher water temperature (20 °C) resulted in lower δ13C values in Daphnia and ephippia than in the other treatments with the same food source and in a minor change in the difference between δ13C values of ephippia and Daphnia (to -1.3 ± 0.3‰). This may have been due to microbial processes or increased algal respiration rates in the experimental containers, which may not affect Daphnia in natural environments. There was no significant difference in the offset between δ18O and δ15N values of ephippia and Daphnia between the 12 °C and 20 °C treatments, but the δ18O values of Daphnia and ephippia were on average 1.2‰ lower at 20 °C compared with 12 °C. We conclude that the stable isotopic composition of Daphnia ephippia provides information on that of the parent Daphnia and of the food and water they were exposed to, with small offsets between Daphnia and ephippia relative to variations in Daphnia stable isotopic composition reported from downcore studies. However, our experiments also indicate that temperature may have a minor influence on the δ13C, δ15N and δ18O values of Daphnia body tissue and ephippia. This aspect deserves attention in further controlled experiments.

scholarly journals Alternative dietary protein and water temperature influence the skin and gut microbial communities of yellowtail kingfish (Seriola lalandi)

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8705
Author(s):  
Jack Horlick ◽  
Mark A. Booth ◽  
Sasha G. Tetu
Keyword(s):  
Water Temperature ◽  
Microbial Communities ◽  
Relative Abundance ◽  
Microbial Community Composition ◽  
Interactive Effects ◽  
Microbial Composition ◽  
Host Health ◽  
Yellowtail Kingfish ◽  
Seriola Lalandi ◽  
Skin Mucosa

Fish skin and gut microbiomes contribute to host health and growth and are often significantly different in aquaculture-reared fish compared to wild fish. Determining how factors associated with aquaculture, including altered diet and abiotic conditions, affect the microbiome will assist with optimizing farming practices and non-invasively assessing fish health. Here, juvenile yellowtail kingfish (Seriola lalandi) housed at optimal (22 °C) and non-optimal (26 °C) water temperature were fed a fishmeal control diet or the same diet substituted with 30% soy-protein concentrate (SPC) in order to investigate impacts on host health and the microbial community composition of the skin mucosa, gut mucosa and digesta. Each of these sites was observed to have a distinct microbiome composition. The combination of SPC and housing at 26 °C significantly reduced weight gain in yellowtail kingfish and affected immune parameters. The overall microbial composition and relative abundance of specific operational taxonomic units (OTUs) was also significantly altered by inclusion of SPC at 26 °C, with a notable increase in an OTU identified as Photobacterium in the skin mucosa and digesta. Increased relative abundance of Photobacterium sp. was significantly correlated with reduced levels of digesta myeloperoxidase in yellowtail kingfish; a recognized innate immunity defense mechanism. The changes in the microbial communities of yellowtail kingfish fed a diet containing 30% SPC at 26 °C highlights the importance of considering the interactive effects of diet and environmental factors on microbiome health in farmed yellowtail kingfish.

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