Judul: Rancang Bangun Bubu Lipat untuk Menangkap Kepiting Bakau (Scylla serrata)
Abstrak: Collapsible trap is the most popular fishing gear to catch of mud crab. This fishing gear has weakness, because its construction was adopted from other country without any aclimatization with behavior of Indonesian mud crab. The main objective of this research is to determine suitable design of collapsible trap to catch the mud crab. This research consists of two steps. First step is called as research of trap parts. The objectives of this step are to determine suitable mesh size of trap entrance, suitable slope of trap entrance, shape and size of trap entrance, and suitable colour of shelter. Second step is called as new design trap trial. The objectives of this step are to obtain the most productive design of trap and to determine influence of lid instalation at the top of trap as a shelter. The method of all researchs are laboratory experiment. The result showed that the suitable mesh size of trap entrance was 1 inchi, the suitable slope of trap entrance was 40o, the suitable shape of trap entrance was square with height of 5 cm. The distance between wires was 2-3 cm. The colour that was choosen by mud crab was black. So, this colour could be used by the trap as a shelter. The catch number of four types trap were significantly different (Fcount= 95.52 > Ftab= 2.74). Most of mud crabs were caught in new design trap (B) (59.2% from total catch) and fewer crabs were caught by fishermen trap (N) (0,05% from total catch). This trap has dimension of 50 × 50 × 16 (cm). The catch number of trap with lid and without lid was significantly different (Fcount= 125.59 > Ftab= 4.41). The catch number of trap with lid was 89 crabs (96.7% from total catch). While, the catch number of trap without lid was 3 crabs (3,3% from total catch).
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Judul: Construction Improvement of Folding Traps for Catching Freswater Crayfish (Cherax sp.)
Abstrak: Cherax quadricarinatus merupakan salah satu jenis lobster air tawar yang memiliki nilai ekonomis tinggi. Salah satu daerah penyebarannya Belitung Timur. Masyarakat Belitung Timur melakukan penangkapan lobster air tawar menggunakan bubu payung. Bubu payung standar memiliki kekurangan yaitu sulit dimasuki lobster. Lobster yang telah terperangkap juga mudah keluar dari pintu masuk, sehingga bubu standar tidak efektif untuk menangkap lobster air tawar. Salah satu upaya yang dilakukan untuk mengoptimalkan bubu adalah dengan memperbaiki konstruksi pintu masuk agar lobster mudah memasuki bubu dan sulit ketika melepaskan diri. Tujuan penelitian ini adalah menentukan umpan yang tepat untuk bubu, menentukan konstruksi pintu yang tepat dan membandingkan hasil tangkapan antara bubu pintu standar dengan pintu modifikasi. Seluruh penelitian dilakukan pada skala laboratorium. Penelitian menggunakan akuarium dan kolam pembesaran. Uji konstruksi pintu bubu dilakukan di akuarium sedangkan uji makanan dan uji bubu dilakukan di kolam pembesaran. Konstruksi pintu bubu yang tepat adalah memiliki pintu luar menyentuh dasar bubu, sudut lintasan 40˚ dan bentuk pintu bagian dalamnya persegi panjang. Bubu modifikasi mampu memerangkap lobster sebanyak 76,92%, sedangkan bubu standar sebanyak 23,08%. Bubu standar mampu meloloskan lobster sebanyak 78,79%, sedangkan bubu modifikasi hanya sebanyak 21,31%. Umpan yang tepat digunakan adalah ikan laisi (lemuru)., Cherax quadricarinatus is one type of freshwater crayfish that has high economic value. One of the distribution areas is East Belitung. The people of East Belitung catch freshwater crayfish using umbrella traps. Standard umbrella traps have the disadvantage that it is difficult for lobsters to enter. Lobsters that have been trapped are also easy to escape from the entrance, so standard traps are ineffective for catching crayfish. One of the efforts made to optimize the trap is to improve the construction of the entrance so that the lobsters are easy to enter the trap and difficult to escape. The purpose of this study was to determine the right bait for the trap, determine the right door construction and compare the catch between the standard door trap and the modified door. All research was conducted on a laboratory scale. Research using aquariums and rearing ponds. The trap door construction test was carried out in the aquarium while the food test and trap test were carried out in a rearing pond. The proper construction of a trap door is to have the outer door touch the bottom of the trap, the angle of passage is 40˚ , and the shape of the inner door is rectangular. The modified trap was able to trap lobster as much as 76.92%, while the standard trap was 23.08%. Standard traps were able to pass lobster as much as 78.79%, while modified traps were only 21.31%. The right bait to use is laisi fish (lemuru).
Keyword: bait, freshwater crayfish, umbrella trap

Judul: Respons hormonal dan imunologis wanita premenopause terhadap minuman fungsional berbahan dasar susu skim yang disuplementasi dengan isoflavon kedelai dan Zn
Abstrak: The decrease of ovarian estrogen level in women causes various menopaused systems of premenopausal women. Along with the decrease of estrogen production, immune system also declines causing degenerative diseases to occur.
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