The effects of teflubenzuron on mortality, physiology and accumulation in Capitella sp.
Fang, Jinghui ; Samuelsen, Ole B. ; Strand, Øivind ; Hansen, Pia Kupka ; Jansen, Henrice - \ 2020
Ecotoxicology and Environmental Safety 203 (2020). - ISSN 0147-6513
Aquaculture - Growth - Mortality - Polychaete - Salmon lice - Teflubenzuron
The chitin synthesis inhibitor teflubenzuron (TFB) is a feed antiparasitic agents used to impede molting of the salmon lice, an ecto-parasite that severely affects the salmon industry. Low absorption of oral administered TFB may cause elevated concentrations in the feces discharged from the salmon into the benthic environment. The polychaete Capitella sp. are often dominant in such habitats and consume organic waste deposited on the sediment. In the present study, Capitella sp. were exposed to doses of TFB in salmon feed of 1, 2 and 4 g TFB kg−1 (0 g TFB kg−1 in control group) over an experimental period of 32 days. Cumulative mortality was 12%–15% in both treatment groups with 1 and 2 g TFB kg−1 and reached 27% in the group with 4 g TFB kg−1. Only the highest dose (4 g TFB kg−1) negatively affected feed intake, growth and respiration of the polychaetes while food conversion efficiency was not affected. At the end of the experiment, the concentrations of TFB in the Capitella sp. were high, in the range of 9.24–10.32 μg g−1 for the three treatment groups. It was suggested that a maximum level of absorption rate was reached, also for the lowest dose. High concentrations of TFB in the Capitella sp. might pose a risk to crustaceans that forage for polychaetes in the vicinity of fish farms. We conclude that the effects of TFB on Capitella sp. may therefore primarily be to the predators rather than the Capitella sp.
Antenatal multiple micronutrient supplementation: call to action for change in recommendation
Bourassa, Megan W. ; Osendarp, Saskia J.M. ; Adu‐Afarwuah, Seth ; Ahmed, Saima ; Ajello, Clayton ; Bergeron, Gilles ; Black, Robert ; Christian, Parul ; Cousens, Simon ; Pee, Saskia de; Dewey, Kathryn G. ; Arifeen, Shams El ; Engle‐Stone, Reina ; Fleet, Alison ; Gernand, Alison D. ; Hoddinott, John ; Klemm, Rolf ; Kraemer, Klaus ; Kupka, Roland ; McLean, Erin ; Moore, Sophie E. ; Neufeld, Lynnette M. ; Persson, L. ; Rasmussen, Kathleen M. ; Shankar, Anuraj H. ; Smith, Emily ; Sudfeld, Christopher R. ; Udomkesmalee, Emorn ; Vosti, Stephen A. - \ 2020
Annals of the New York Academy Of Sciences 1465 (2020)1. - ISSN 0077-8923 - p. 5 - 7.
Review of the evidence regarding the use of antenatal multiple micronutrient supplementation in low- and middle-income countries
Bourassa, Megan W. ; Osendarp, Saskia J.M. ; Adu-Afarwuah, Seth ; Ahmed, Saima ; Ajello, Clayton ; Bergeron, Gilles ; Black, Robert ; Christian, Parul ; Cousens, Simon ; Pee, Saskia de; Dewey, Kathryn G. ; Arifeen, Shams El ; Engle-Stone, Reina ; Fleet, Alison ; Gernand, Alison D. ; Hoddinott, John ; Klemm, Rolf ; Kraemer, Klaus ; Kupka, Roland ; McLean, Erin ; Moore, Sophie E. ; Neufeld, Lynnette M. ; Persson, Lars Åke ; Rasmussen, Kathleen M. ; Shankar, Anuraj H. ; Smith, Emily ; Sudfeld, Christopher R. ; Udomkesmalee, Emorn ; Vosti, Stephen A. - \ 2019
Annals of the New York Academy Of Sciences 1444 (2019)1. - ISSN 0077-8923 - p. 6 - 21.
LMICs - micronutrient - pregnancy - supplements
Inadequate micronutrient intakes are relatively common in low- and middle-income countries (LMICs), especially among pregnant women, who have increased micronutrient requirements. This can lead to an increase in adverse pregnancy and birth outcomes. This review presents the conclusions of a task force that set out to assess the prevalence of inadequate micronutrient intakes and adverse birth outcomes in LMICs; the data from trials comparing multiple micronutrient supplements (MMS) that contain iron and folic acid (IFA) with IFA supplements alone; the risks of reaching the upper intake levels with MMS; and the cost-effectiveness of MMS compared with IFA. Recent meta-analyses demonstrate that MMS can reduce the risks of preterm birth, low birth weight, and small for gestational age in comparison with IFA alone. An individual-participant data meta-analysis also revealed even greater benefits for anemic and underweight women and female infants. Importantly, there was no increased risk of harm for the pregnant women or their infants with MMS. These data suggest that countries with inadequate micronutrient intakes should consider supplementing pregnant women with MMS as a cost-effective method to reduce the risk of adverse birth outcomes.
Ecology and management of northern red oak (Quercus rubra L. syn. Q. borealis F. Michx.) in Europe: A review
Nicolescu, Valeriu Norocel ; Vor, Torsten ; Mason, William L. ; Bastien, Jean Charles ; Brus, Robert ; Henin, Jean Marc ; Kupka, Ivo ; Lavnyy, Vasyl ; LaPorta, Nicola ; Mohren, Frits ; Petkova, Krasimira ; Rédei, Károly ; Stefancik, Igor ; Wasik, Radoslaw ; Peric, Sanja ; Hernea, Cornelia - \ 2018
IEEE Transactions on Industrial Informatics 15 (2018)3. - ISSN 1551-3203
Northern red oak (Quercus rubra L. syn. Q. borealis F. Michx.) is a valuable broadleaved tree species originating from the eastern half of the USA and Canada. It was introduced to Europe in 1691 and currently covers over 350 000 ha, being found all over the continent, except the coldest part of Scandinavia. It is a fast-growing and valuable broadleaved tree due to its ecological characteristics, good wood properties and high economic value. Northern red oak prefers deep, loose, moderately humid and acid soils, without compact horizons and of at least moderate fertility. It does not grow well on dry, calcareous soils as well as waterlogged or poorly drained soils. It is either naturally regenerated using a group shelterwood system or planted using seedlings of European provenance, collected in certified seed stands. As northern red oak is light-demanding, its management should be 'dynamic' and includes heavy interventions (cleaning respacing and thinning from above), in order to minimize crown competition between the final crop trees. These should produce large diameter trees for valuable end uses (e.g. veneer, solid furniture, lumber, etc.) within a rotation period generally of 80 100 years. The necessity for pruning (both formative and high) depends on the stand stocking at establishment, the subsequent silvicultural interventions as well as the occurrence of forking. The adaptation potential of northern red oak to predicted climate change, especially drought, seems to be higher than for European native oaks, the importance of the species is expected to increase in the future.
Development of benthic imta systems by coupling polychaete production to salmon farming: system development, nutrient dynamics and risk of medicine residues
Jansen, H.M. ; Fang, Jinghui ; Nederlof, M.A.J. ; Brennan, Natalie ; Hansen, Pia Kupka ; Samuelsen, Ole ; Strand, Olivind - \ 2018
- 2 p.
|A large-scale forestry scenario model as a planning tool for Europe
Nabuurs, G.J. ; Päivinen, R. ; Sallnäs, O. ; Kupka, I. - \ 1997
In: Planning and decision-making for forest management in the market economy; proceedings IUFRO conference Pushkino, Moscow Region, 25-29 September 1996 Cuvillier, Göttingen; 89-102 / Moiseev, N.A., von Gadow, K., Krott, M.,
|Towards a European forest sector carbon balance study. Paper presented at the Workshop on a global terrestrial carbon flux tracking system, Corvallis (Oregon), March 28-30, 1995
Nabuurs, G.J. ; Karjalainen, T. ; Kupka, I. ; Milne, R. - \ 1995
In: Internal report US-EPA / Brown, S., Cairns, M.,