Results 131 to 140 of about 4,803 (181)

Impacts of a Sweet Orange Essential Oil–Based Biopesticide on Exorista larvarum, a Parasitoid Tachinid Fly With a Dual Role

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 8, Page 933-941, August 2026.
Lethal (mortality) and sublethal (fecundity, fertility) effects of the biopesticide Prev‐Am Plus (containing ~6% sweet orange essential oil) were assessed on the tachinid fly Exorista larvarum. Mated females were exposed via contact and oral routes across five concentrations (0.25%–20%) using protocols adapted from Apis mellifera.
Santolo Francati   +3 more
wiley   +1 more source

Non‐Target Effects of Some Common Agrochemicals on Various Life Stages and Parasitism Behaviour of Trichogrammatoidea cryptophlebiae Nagaraja, 1979 (Hymenoptera: Trichogrammatidae)

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 8, Page 942-956, August 2026.
This study assessed the non‐target effects of commonly used agrochemicals on the egg parasitoid Trichogrammatoidea cryptophlebiae, an important biological control agent in South African orchards. Agrochemical impacts varied across life stages, with several insecticides allowing adult survival but significantly reducing parasitism and developmental ...
Emma Jane Thompson   +4 more
wiley   +1 more source

Integrated histopathological, physiological, biochemical, and molecular analysis of gill responses to acute salinity stress in red tilapia (Oreochromis spp.)

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 4, August 2026.
Abstract Growing freshwater scarcity in China is driving aquaculture interests toward saline‐tolerant fish species. Red tilapia (Oreochromis spp.) is a euryhaline species with strong osmoregulatory capacity, making it an ideal model for investigating stress‐induced physiological changes.
Moustafa Saleh   +8 more
wiley   +1 more source

Enhanced ammonia tolerance at higher salinity reflects metabolic adjustments in Litopenaeus vannamei postlarvae

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 4, August 2026.
Abstract Ammonia, a major by‐product of protein catabolism in shrimp, can rapidly accumulate in high‐density culture systems, particularly under limited water exchange. It is a common toxicant and a key limiting factor in intensive aquaculture, entering through the gills and causing metabolic disruption, reduced growth, and increased mortality. In this
Mehmet Kır, Mustafa Topuz
wiley   +1 more source

Assessment of the feed additive consisting of lasalocid A sodium (Avatec® 150G) for turkeys, pheasants, guinea fowl, quails and partridges except laying birds thereof for the renewal of its authorisation (Zoetis Belgium SA)

open access: yesEFSA Journal, Volume 24, Issue 8, August 2026.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of lasalocid A sodium (Avatec® 150G) as a coccidiostat for turkeys, pheasants, guinea fowl, quails and partridges. The additive currently on the market complies with the existing conditions of authorisation.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)   +26 more
wiley   +1 more source

Safety and efficacy of a feed additive consisting of nicarbazin (NICACOX®) for chickens for fattening and chickens reared for laying (Huvepharma N.V.)

open access: yesEFSA Journal, Volume 24, Issue 8, August 2026.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of a feed additive consisting of nicarbazin (NICACOX®) as a coccidiostat for chickens for fattening and chickens reared for laying.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)   +28 more
wiley   +1 more source

Peer review of the pesticide risk assessment of the active substance choline hydrogen phosphonate

open access: yesEFSA Journal, Volume 24, Issue 8, August 2026.
Abstract The conclusions of the European Food Safety Authority (EFSA) following the peer review of the initial risk assessments carried out by the competent authority of the rapporteur Member State Belgium for the pesticide active substance choline hydrogen phosphonate and the assessment of an application for maximum residue levels (MRLs) are reported.
European Food Safety Authority (EFSA)   +47 more
wiley   +1 more source

Estimation of the LC50, a review

Environmetrics, 1991
AbstractIn this paper methods to estimate the median lethal concentration (LC50) are reviewed. Estimation from data sets with limited occurrence of partial response (>0%, <100%) receives particular attention.
Hoekstra, JA
exaly   +4 more sources

Genotoxic Effects and LC50 Value of NaOCl on Orthrias angorae (Steindachner 1897)

Bulletin of Environmental Contamination and Toxicology, 2008
Studies show that different organisms used as bio-indicators have indicated several genotoxic and mutagenic effects of disinfected waters. In this study, the 96 h LC(50 )mean value of NaOCl for Orthrias angorae was calculated to be 0.5509 mg/L. The results showed that NaOCl is highly toxic to O. angorae specimens.
Oktay Özkan
exaly   +3 more sources

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