The aim of this study is to determine the marketing channel and the factors affecting farmer's selection of a distribution channel of chili produced in Tra Vinh province, Vietnam. With primary data of 193 chili farmers, the study based on the theory of transaction cost economics to estimate the determinants of marketing channels using the approach of the Probit model. The results showed that the marketing choice decision of chili farmers was affected by transaction costs, price risk attitude and farmers' characteristics. Cooperatives mainly used seedling supply as an interlocked exchange to encourage farmers to remain in the cooperative channel. The finding also revealed that cooperative channel was not just the preferred channel when farmers were confronted with selling pressure due to the perishable nature of the chili, but also was a safe channel for more risk-averse farmers. Contribution/ Originality The choice of marketing channel is one of the main decisions for producers because different channels are characterized by certain levels of profitability and cost. The study aims to identify factors affecting the chili farmer's selection of a distribution channel. The results of this study could provide policymakers useful information to master chili farmers' distribution channels.

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This study was conducted to evaluate the effect of dietary, salinity on the reproductive efficiency of mud clam broodstock (Austriella corrugata) in the maturing condition. The reproductive efficiency was assessed by survival rate, maturation rate, actual fecundity, spawning rate, fertilization rate, reproductive efficiency rate (100*D-veliger/fertilized eggs), larval quality. The experiment was held in the five dietaries and three salinities (18‰, 23‰ and 28‰). Three replicates were carried out for each treatment. Results showed that the reproductive efficiency of using fresh algae complex in 28‰ salinity was the highest and the larvae are in good quality, followed by that in the 23‰ salinity but having no statistically significant difference ( p > 0.05) while that in the 18‰ salinity experienced the least (p < 0.05). This study on dietary, salinity suggests that fresh algae complex in the salinity of 28 ± 1‰ is suitable for maturing broodstock of mud clam. These findings will contribute to building up hatchery production techniques as well as helping protection of natural stock and developing sustainable mud clam resource.