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This study investigated the effect of dietary arachidonic acid (ARA, 20:4n‐6) on final maturation, spawning performance and composition of the gonad of black sea urchin (Diadema setosum). Four different dietary ARA levels of 0.3 g/kg (Control diet), 1.4 g/kg (ARA 1.4), 2.5 g/kg (ARA 2.5) and 3.7 g/kg (ARA 3.7) were prepared and tested in this feeding trial for 90 days. The result showed that growth in terms of weight was not relatively affected by dietary ARA. Gonadosomatic Index (GSI) of animals were gradually increased in all the diets throughout the trial. The highest GSI level (25.7 ± 3.16%) was observed in animals fed with the diet ARA 1.4. ARA content in the gonad proportionally increased with dietary ARA levels. The highest larval survival rate (85.5 ± 5.67%) was found in diet ARA 2.5. The results of this study indicate that ARA plays an important role in the reproduction functions of black sea urchin and supplementing an appropriate level of ARA in the broodstock diet could induce the final maturation and improve reproduction of black sea urchin, but a higher level of ARA (3.7 g/kg) seems to have a negative effect on both growth rate and GSI.

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The purpose of this study was to examine the research capacity of Can Tho University's lecturers. The current status of research capacity of lecturers (n=198) was assessed based on basic criteria through questionnaires regarding the aspects of (1)awareness of lecturers on the role and importance of research activities; (2)motivation to perform scientific research; (3)self-evaluation on conducting scientific research capacity of lecturers; and (4)advantages and disadvantages of performing research activities. The results showed that lecturers have a proper awareness of the role and importance of doing research. The main motivations for lecturers to join scientific research were to improve their professional qualifications (93.4%) and support teaching (76.8%). In general, selfassessment of lecturers on their research capacity was mainly at fairly good level (41.1%), good (31.6%) and very good (5.2%). However, there were also some responses with poor level (3.11%). Support resources (administrative office and laboratories) are considered as main key factors affecting scientific research activities of lecturers. There is a need of policy to encourage the motivation and creating research environment. These are considered as potential solutions for improving research capacity and effectiveness of scientific research quality of lecturers and the University.

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