ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
A tube bird feeder comprising a seed tube having a side wall and at least one feed opening in the side wall, a top ring mounted on a top marginal edge of the seed tube, a cover removably engaged with the top ring, at least one perch mounted on the seed tube proximate the feed opening, and a base member ...
A rotation transmission mechanism (6) includes a drive shaft (10), a drive gear (11), a pinion gear (12), a first bearing (26), and a positioning structure (40). The drive shaft is rotatable with respect to a chassis (21). The drive gear is unitarily rotatable with the drive shaft. The pinion gear is ...
The invention provides a process for the feeding of fish, comprising at least two consecutive stages: stage I: feeding juvenile fish with a feed having high protein and low fat content, thereby preferably decreasing the level of saturated and monounsaturated fatty acids in said fish meat relative to ...
The present invention relates to a composition comprising phosphorous for use in preventing deformities in triploid fish. The invention additionally relates to the use of phosphorous for the manufacture of a medicament comprising phosphorous for the prevention of deformities in triploid fish and to ...
A fish delousing installation includes a warm water source, and a fish slide for fish to slide down. The fish slide has a fish inlet, a fish outlet, and a slide length defined therebetween. A plurality of shower nozzles are in communication with the warm water source and are positioned to shower the ...
A method of cultivating aquatic product and plant contains steps of: (A) Preparing a cultivation tank (10) with cultivation water (12); (B) Aerating the cultivation water (12); (C) Drawing overflow water in a top of the cultivation tank (10) and foul water in a bottom of the cultivation tank (10) into ...
Because of wide applications of surface-modified zinc oxide nanoparticles (ZnO-NPs) in commercial sunscreens and their easiness of being released into water, concerns have been raised over their potential effects on aquatic organisms. This study compared physicochemical properties of silane-coated and ...
Humans stand out among animals in that we cooperate in large groups to exploit natural resources, and accumulate resource exploitation techniques across generations via cultural learning. This uniquely human form of adaptability is in large part to blame for the global sustainability crisis. This paper ...
Schools of fish and flocks of birds can move together in synchrony and decide on new directions of movement in a seamless way. This is possible because group members constantly share directional information with their neighbors. Although detecting the directionality of other group members is known to ...
The advent of next-generation sequencing tools has made it possible to conduct fine-scale surveys of population differentiation and genome-wide scans for signatures of selection in non-model organisms. Such surveys are of particular importance in sharply declining coral species, since knowledge of population ...
Historically Russia can be regarded as a “herbophilious” society. For centuries the multinational population of Russia has used plants in daily diet and for self-medication. The specificity of dietary uptake of medicinal plants (especially those in the unique and highly developed Russian herbal medical ...
Caribbean seagrass habitats provide food and protection for reef-associated juvenile fish. The invasive seagrass Halophila stipulacea is rapidly altering these seascapes. Since its arrival in the Caribbean in 2002, H. stipulacea has colonized and displaced native seagrasses, but the function of this ...
The world’s coral reefs appear to be in a global decline, yet most previous research on coral reefs has taken place at depths shallower than 30 m. Mesophotic coral ecosystem (depths deeper than ~30 m) studies have revealed extensive, productive habitats and rich communities. Despite recent advances, ...
Abstract Diversity estimates play a key role in ecological assessments. Species richness and abundance are commonly used to generate complex diversity indices that are dependent on the quality of these estimates. As such, there is a long‐standing interest in the development of monitoring techniques, ...
Marine environments are largely unexplored and can be a source of new molecules for the treatment of many diseases such as malaria, cancer, tuberculosis, HIV etc. The Marine environment is one of the untapped bioresource of getting pharmacologically active nonribosomal peptides (NRPs). Bioprospecting ...
The exopolysaccharide synthesized by Lactobacillus sakei MN1 is a dextran with antiviral and immunomodulatory properties of potential utility in aquaculture. In this work we have investigated the genetic basis of dextran production by this bacterium. Southern blot hybridization experiments demonstrated ...
Background Fish are vulnerable to stress from over-crowding during transportation and eugenol is the most common sedative used to minimize fish injury. The ADI value of 2.5 mg/kg is recommended by the Joint FAO/WHO Expert Committee on Food Additives. The aim of this work was to study the elimination ...
ABSTRACT Heterogeneity in host susceptibility is a key determinant of infectious disease dynamics but is rarely accounted for in assessment of disease control measures. Understanding how susceptibility is distributed in populations, and how control measures change this distribution, is integral to ...
Irrigation with eutrophic water containing cyanobacteria toxins poses a potential risk to soil animals. To evaluate ecotoxicological effect of microcystins (MCs) on earthworms, filter paper acute toxicity test, avoidance test and a 14-d artificial soil test were carried out. No acute toxicity was found ...
Apex predators play a key role in ecosystem stability across environments but their numbers in general are decreasing. By contrast, European catfish (Silurus glanis), the European freshwater apex predator, is on the increase. However, studies concerning apex predators in freshwaters are scarce in comparison ...