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... In Russia many scientific and practical questions of open-air cages cultivations of such species of hoofed animals as a maral or a red deer (Cervus elaphus L.), a spotty deer (Cervus nippon L.), a wild boar (Sus scrofa L.), the European fallow deer (Dama dama L.), mouflon (Ovis musimon L.), and roe deer (Capreolus capreolus L.) are studied not enough. The purpose of the given researches is to stud ...
... A total of 4184 farmed Atlantic salmon (Salmo salar) were sampled and subsequently examined for nematodes between January 2014 and July 2015. The fish originated from 37 salmon farms along the coast of Norway and represented all salmon-producing counties. Samplings took place at processing facilities during regular slaughtering procedures and consisted of 3525 harvest quality salmon processed for ...
... The study of insect succession in cadavers and the classification of arthropods have mostly been done by placing a carcass in a cage, protected from vertebrate scavengers, which is then visited periodically. An alternative is to use specific traps. Few studies on carrion ecology and forensic entomology involving the carcasses of large vertebrates have employed pitfall traps. The aims of this study ...
... Reproduction is a nutritionally costly activity for many insects, as their eggs are rich in lipids and proteins. That cost seems especially acute for non-social bees, which for their size, lay enormous eggs. All adult female bees visit flowers, most of them to collect pollen and nectar, or sometimes oils, to feed their progeny. For adult bees, the need for pollen feeding has only been detailed for ...
... Due to increasing resistance to chemical therapeutants, the use of ‘cleaner fish’ (primarily wrasse, Labridae, species) has become popular in European salmon farming for biocontrol of the salmon louse, Lepeophtheirus salmonis (Krøyer). While being efficient de‐licers, cleaner fish mortality levels in salmon cages are commonly high, and systemic bacterial infections constitute a major problem. Atyp ...
Andrea C. Varella; Luther E. Talbert; Megan L. Hofland; Micaela Buteler; Jamie D. Sherman; Nancy K. Blake; Hwa‐Young Heo; John M. Martin; David K. Weaver
... The stem solidness trait in wheat has been the most effective mechanism for management of the wheat stem sawfly (WSS) for six decades. However, recent results have shown that in certain genotypes, the degree of stem solidness is not a useful indicator of WSS resistance. A morphological characterization of solidness expression indicated that in the genotype ‘Conan’, very solid pith undergoes rapid ...
... This study investigated the variability of amino acid (AA) digestibility of rye grains in laying hens. Relationships between AA digestibility and physical properties (thousand seed weight, test weight, falling number, and extract viscoelasticity), chemical composition (proximate nutrients, non-starch polysaccharides, AA, minerals, and inositol phosphates), gross energy concentration, and in vitro ...
... Ammonia, methane, nitrous oxide and carbon dioxide emissions were measured during a complete production cycle in an enriched cage laying hen facility under Oceanic climate conditions. Continuous monitoring of gas concentration, ventilation rate and environmental parameters were conducted from April 2012 to September 2013. The seasonal and diurnal pattern of gas emissions was analysed.Seasonality e ...
... The invasive crab Hemigrapsus sanguineus has a generalist diet, consuming primarily macroalgae and sessile and sedentary invertebrate prey. To assess the dietary importance of motile prey, predation by H. sanguineus on the amphipod Hyale plumulosa was examined in laboratory and field experiments. Male and female crabs 7–27mm in carapace width were offered H. plumulosa in laboratory microcosms with ...
... Fullerenes are carbon based nanoparticles that may enter the environment as a consequence of both natural processes and human activities. Although little is known about the presence of these chemicals in the environment, recent studies suggested that soil may act as a sink. The aim of the present work was to investigate the presence of fullerenes in soils collected in The Netherlands. Samples (n = ...
... The ability to learn plays a key role in tuning and adapting the behaviours of animals for their unpredictable biotopes. This also applies to insect vectors of disease. Anautogenous mosquitoes need to find both sugar and blood for survival and reproduction. Learning processes are expected to contribute to a mosquito’s ability to undertake repeated feeding behaviours more efficiently with time, ser ...
Monogenea; Seriola dumerili; Seriola quinqueradiata; appetite; cages; control methods; farmed fish; field experimentation; fish behavior; fish health; freshwater; gills; hydrogen peroxide; net pens; oral administration; parasites; praziquantel; summer; swimming; viability; water temperature; Japan
Abstract:
... Infection by the capsalid monogeneans Benedenia seriolae and Neobenedenia girellae, and/or the microcotylid monogenean Zeuxapta japonica can be a problem when the greater amberjack Seriola dumerili (Carangidae) is commercially cultured. Effective control measures against these monogeneans that are safe for S. dumerili, especially during the summer when the ocean temperature increases, are still ne ...
animal proteins; cages; feed mills; fish consumption; fish culture; hatcheries; industry; ponds; production technology; tanks; Egypt
Abstract:
... Aquaculture is a globally important industry that provides essential food to a growing world population, with a major role in the supply of cheap animal protein. Very rapid developments have been occurred in aquaculture sector of Egypt in recent years and exhibited the strongest growth of any fisheries-related activity in the country. As a result, aquaculture is considered as the only viable optio ...
Buxus; Cydalima perspectalis; Trichogramma; biological control agents; cages; defoliation; eggs; females; invasive species; larvae; leaves; natural enemies; oviposition; parasitism; parasitoids; progeny; sex ratio; trees; Europe
Abstract:
... The Box tree pyralid, Cydalima perspectalis Walker (Lepidoptera: Crambidae), is an invasive species in Europe, not yet regulated by natural enemies. It is highly destructive to ornamental and native Buxus due to defoliation by larval feeding. The ability of eight Trichogramma species (T. brassicae Bezdenko, T. bourarachae Pintureau & Babault, T. cacoeciae Marchal, T. cordubensis Vargas & Cabello, ...
Oncorhynchus mykiss; Pseudobarbus; aquatic food webs; aquatic invertebrates; cages; diet; digestive system; field experimentation; indigenous species; particulate organic matter; periphyton; predators; rivers; streams; trout; South Africa
Abstract:
... The introduction of nonnative salmonids in the Southern Hemisphere generally leads to a reduction in invertebrate abundance and changes in assemblage composition. In the Cape Floristic Region of South Africa, introduced rainbow trout Oncorhynchus mykiss is the dominant predator in many headwater streams, where they have replaced small‐bodied native fishes such as Breede River redfin Pseudobarbus b ...
... The brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae), is an economic pest of pecan, Carya illinoinensis (Wangenh.) K. Koch (Juglandaceae), and other agronomic crops across the southeastern United States. The efficacy of many insecticides against E. servus attacking pecan is not well documented even though the label for many of these insecticides may indicate one or more stink bug ...
... Biting arthropods are implicated in the transdermal transmission of Salmonella to bovine peripheral lymph nodes, and such contamination can contribute to increased Salmonella prevalence in processed beef. Since horn flies can acquire Salmonella and then excrete the bacteria in their feces, on-animal fly infestations were conducted in this study to assess whether horn flies have a role in this bact ...
... Welfare problems in laboratory mice can be a consequence of an ongoing experiment, or a characteristic of a particular genetic line, but in some cases, such as breeding animals, they are most likely to be a result of the design and management of the home cage. Assessment of the home cage environment is commonly performed using resource-based measures, like access to nesting material. However, anim ...
... The biological response of mussels Mytilus galloprovincialis, resident and transplanted to cages, to contamination with anthropogenic pollutants from Kaštela Bay, located in the central part of the eastern Adriatic coast, was investigated. The main purpose of this paper is to trace the accumulation of PCBs and chlorinated pesticides (HCB, lindane, heptachlor, aldrin, p,p′-DDTs) as a direct measure ...
Pecten; analysis of variance; cages; crushing; fisheries; mortality; scallops; New Zealand
Abstract:
... The formerly lucrative Pecten novaezelandiae Southern Scallop fishery in New Zealand has experienced significant declines that have resulted in changes to spat handling and transport methods, with untested effects on spat survival. Experiments were carried out on board a harvest vessel to test the effects of spat handling, emersion, immersion and transport for up to 6h post-harvest. Spat were then ...