This study employs a hedonic price model to investigate the relationship between package prices of one-day island tours and the different attributes/characteristics associated with them. 127 observations of prices were obtained from 24 tour operators running in Nha Trang City. Using OLS regression method, the results show that the differences in prices among tours to a large degree can be explained ...

Probiotics administration in aquafeed is known to increase feed consumption and absorption due to their capacity to release a wide range of digestive enzymes and nutrients which can participate in digestion process and feed utilization, along with the absorption of diet components led to an increase in host’s health and well‐being. Furthermore, probiotics improve gut maturation, prevention of ...

Lumpfish (<i>Cyclopterus lumpus</i> L.) in Norway is currently produced in traditional flow-through systems (FTS). Hatcheries frequently show signs of bacterial infections, unstable microbial communities in the rearing water and varying mortality. Recirculating aquaculture systems (RAS) is proposed to create stable and healthy microbial environments, with less probabilities for blooming of opportunistic ...

I denne oppgaven blir det sett på hvordan produksjonsindusert stress i form av mekanisk sjokking og/eller transport under embryogenesen (300-400 døgngrader etter befruktning (dgr)) ville påvirke overlevelse og uttrykk av immun- og stressrelaterte gener på plommesekkstadiet (740-900 dgr) etter en immunologisk utfordring - badsmitte med <i>Yersinia ruckeri</i>. Utvalgte immun- og stressrelaterte gener ...

While TLR-activated pathways are key regulators of B cell responses in mammals, their impact on teleost B cells are scarcely addressed. Here, the potential of Atlantic salmon B cells to respond to TLR ligands was shown by demonstrating a constitutive expression of nucleic-acid sensing TLRs in magnetic sorted IgM⁺ cells. Of the two receptors recognizing CpG in teleosts, <i>tlr9</i> was the ...

The difference between the concepts of profit and rent are discussed theoretically and by using aggregated data from the Icelandic and Norwegian fish harvesting industries. The former is a basic indicator for gauging the business performance of firms and industries, and the latter is important for the evaluation of the economic welfare contribution of resources and industries. The importance of ...

The research measure the profitability and technical efficiency of Black tiger shrimp farms and White leg shrimp farms in Song Cau district, Phu Yen province, Vietnam. Cross-sectional data of 62 Black tiger shrimp samples and 88 White leg shrimp samples were used for comparison two production systems. The profitability analysis shows that White leg shrimp farms achieved an average profit per hectare ...

The development of vaccines employing conserved protein antigens, for instance ribosomal protein P0, has as disadvantage the high degree of identity between pathogen and host proteins due to possible induction of tolerance or auto antibodies in the host organism. To overcome this drawback, peptide-based vaccines have been designed with a proved high efficacy. The use of defined peptides as antigens ...

The present study examines the fisheries governance status of small-scale capture fisheries in the northern Persian Gulf. Qeshm Island, which is selected as case study, plays a prominent role in fisheries in the Persian Gulf and territorial waters of the country. The research methodology included in-depth and semi-structured interviews with heads of fisheries cooperatives and fishers to deepen our ...

There is now high-level recognition that the UN Sustainable Development Goals can only be achieved if the decline of ecosystems and biodiversity can be halted and reversed. This will require effective control of ongoing pressures, meaningful protection and enforcement of protected areas, and significant investments in ecosystem restoration. This paper explores the possible use of economic valuation ...