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Jurnal Akademika Biologi
Published by Universitas Diponegoro
ISSN : -     EISSN : 26219824     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Jurnal Akademika Biologi diterbitkan oleh Departemen Biologi Fakultas Sains dan Matematika Universitas Diponegoro Semarang. Jurnal ini sebagai media publikasi hasil karya ilmiah lulusan S1 Departemen Biologi. Jurnal Akademika Biologi menerima artikel-artikel yang berhubungan dengan bidang ilmu biologi.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 6 Documents
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Search results for , issue "Vol. 1 No. 1 Oktober 2012" : 6 Documents clear
KOMPOSISI DAN POLA SEBARAN POLYCHAETA DI PESISIR MANGKANG KULON KECAMATAN TUGU, SEMARANG BERDASARKAN TATA GUNA LAHAN Syarif Prasetyo; Sapto punomo Putro; Riche Hariyati
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Polychaeta is a biota that became one component of the food chain in the ocean. Having different tolerances, so it is often used as an indicator of changes in water quality. This study examines the composition of polychaeta which includes abundance, dominance, diversity, evennes, and its distribution patterns at two different locations, ie mangrove vegetation and fish farming areas. Location was chosen by looking the land use’s differences in the coastal area of Mangkang Kulon Tugu Subistrict Semarang. Sampling was conducted in July and August 2012. Analysis of physico-chemical parameters to the water samples and the substrate did directly in the field and laboratory. Samples of polychaeta were obtained by a 1 mm benthic sieve. Identifications are made to genus level. Then, calculating the number of genus, abundance, dominance, evennes, diversity and distribution patterns in each station. Overall, there are 15 genus come from polychaeta, they are Capitellidea, Nereididae,  Spionidae, Dorvillidae, Lumbrineridae, Cirratulidae, Oenoidae and Sabellidae. The average of polychaeta abundance index is in the above of 500 ind/m2. Diversity index (H') is relatively sufficient (1,332-2,073). Evennes index value (E) is high (>0,6) and there is no dominat genus with dominant index (D) low (<0.5). The distribution pattern is the same (Id: <1). The Differences sampling location affect on the composition and distribution patterns of the Polychaeta and physico-chemical factors. While sampling time does not affect the composition and distribution patterns of polychaeta and physico-chemical factors waters. Capitellidae is an opportunistic polychaeta that is more common in fish farming areas (70-81%) than in the mangorove vegetation areas (59 -72%). Keywords: Polychaeta, Mangkang Kulon, mangrove, fish farming, composition, distribution pattern,
KEANEKARAGAMAN JENIS IKAN TANGKAP DI SEKITAR KARAMBA DAERAH NGASINAN WADUK KEDUNGOMBO JAWA TENGAH Anang Yunianto; Sapto Punomo Putro; Riche Hariyati
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Nowadays the fish farming activity in the Kedungombo reservoir tends to increase gradually. The knowledge of diversity and abundance of  fish species would be usefull to preserve the ecosystem of the reservoir. The improving management of water resources reservoirs is also needed to increase the economy of local community. The purpose of this study is to determine the diversity and abundance of fish found in the area around Kedungombo reservoir. The study is explorative. Sampling was done randomly at 5 stations. Data analysis was done to determine the similiaritas index (Di), diversity index (H '), evenness index (e), relative abundance. Hutcheson t test was carried out to determine differences in species diversity at July and August with five-point observation stations.  Based on the results of the study, during the months of July to August, there are 8 species, namely: Silver barb (Barbonymus gonionotus), tilapia (Oreochromis niloticus), Mujair (Oreochromis mossambicus), catfish (Pangasius sutchi), Betutu (Oxyeleotris marmorata), Red Devil (Amphilophus labiatus), Redoson (Trichogaster trichopterus) and Gurame (Osphronemus goramy). The level of diversity and evenness of fish are considerably low. Silver barb fish dominated in relative abundance. Hutcheson t test results showed no difference in fish species diversity, indicated by t count <t table at the 95% confidence level. Water quality, light brightness and sediments were considered as a suitable habitat for fish. This study implies that other studies at the other regions are needed to assess the diversity of tropical fish
PENGARUH TEPUNG KUNYIT (Curcuma longa L.) TERHADAP KADAR KOLESTEROL DAN KADAR TRIGLISERIDA DARAH BURUNG PUYUH (Coturnix coturnix japonica L.) Sheila Widowati; Koen Praseno; Tyas Rini Saraswati
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

This study aims to determine the potential of turmeric powder to the vitality of the quail with blood cholesterol and triglyceride levels. Results of studies using different concentrations of turmeric powder. One set of experiments consisted of 4 treatments each consisting of three tail quail and performed five repetitions. Given concentration is 0 mg / head / day; 13'5 mg / head / day; 27 mg / head / day; 54 mg / head / day for increased vitality through the levels of cholesterol and triglycerides. Data were analyzed using ANOVA (analysis of varian). Analysis showed significantly different levels of cholesterol and triglycerides in the blood. Provision of turmeric powder (Curcuma longa L.) in this study has the potential to lower cholesterol and blood triglycerides quail.Keyword : cholesterol and triglycerides, quail (Coturnix coturnix japonica L.), turmeric powder
INDEKS KUNING TELUR DAN NILAI HAUGH UNIT TELUR PUYUH (Coturnix coturnix japonica L.) SETELAH PEMBERIAN TEPUNG KUNYIT (Curcuma longa L.) Dian Tri Kusumastuti; Koen Praseno; Tyas Rini Saraswati
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

This aim of this research was to analyze the effect of supplemented Curcuma longa L. powder to yolk index and haugh unit. A total number of 60 DOQ were distributed into 4 treatments. Each treatment use 3  quails and repeated 5 times. The control diet did not contains Curcuma longa L. powder (P0), the other diets were supplemented with 13,5 mg/quail/day (P1); 27 mg/quail/day (P2); 54 mg/quail/day (P2). The trial lasted for 60 days. The data were analyzed with anova (analysis of variants). Supplemented Curcuma longa L. powder had no effect on any parameters. The diets have not changes yolk index and haugh unit.Key words : Turmeric powder, quail (Coturnix coturnix japonica L.), yolk index, haugh unit.
ISOLASI DAN KARAKTERISASI BAKTERI PENDEGRADASI DIAZINON DARI TANAH SAWAH DI KABUPATEN BREBES Jebria Kwartaning Tyas; Agung Suprihadi; Budi Raharjo
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

An intensification in agriculture often faces some threats due to the existance of plant interrupted organism  which often causes the decreasing of the harvest or even the failure of the harvest. The growth controlling of the Plant Interrupted Organism by using pesticide by most of the farmers has been considered as a solution that can save or protect the harvest from the attack of the Plant Interrupted Organism. The objective of this research is to get isolate and bacterial characteristic which able to degrade the diazinon. The main source of the microbes are taken from the soil sample in Brebes Regency, especially in Ketanggungan District, Wanasari District, Losari District, dan Larangan District. The research was conducted by isolation and screening for isolates followed by a characterization of bacterial isolates include morphological observations and biochemical tests. Isolates that have acquired resistance test of diazinon is then performed to determine the extent of the ability of bacteria to survive, and then to measure the growth curve and the final step is to test the degradation of diazinon by using HPLC (High Performance Liquid Chromatography). The medium which were used in isolation and screening process were Mineral Salt Medium (MSM) that had been added with diazinon 0,5 ppm and the final results obtained six isolates, there were JKB1, JKB2, JKB3, JKB4, JKB5 and JKB6. The result of resistance test showed that concentration of 90 ppm was the resistance limit of the six isolates, and the most resistance isolate was JKB3 which was shown with the greatest amount of the cells than other isolates. The growth curve was made by inoculating the isolates on MSM medium with 90 ppm diazinon, then it would get JKB5 isolate which has the highest adaptive ability. Diazinon degradation test was detected with HPLC in some varieties of incubation time, like 24, 24, and 72 hours. From this test we could get the JKB2 isolate and JKB1 isolate which had higher degradation ability than four isolates, due to a decrease in the concentration of diazinon on JKB2 at 76.27 ppm or 84.74%, followed by JKB1 70,05 ppm or 77.83%.
ISOLASI DAN KARAKTERISASI BAKTERI PENDEGRADASI PESTISIDA DICOFOL DARI TANAH SAWAH DI KABUPATEN KARAWANG Anindita Ayu Pratiwi; Agung Suprihadi; Budi Raharjo; Priyo Wahyudi; Sih Parmiyatmi
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Karawang was the center of rice production, but rice production in paddy fields in Karawawang often faces obstacle hopper pest that caused crop failure. These condition prompted the farmers to using dicofol pesticides excessively, thus caused pollution of pesticides. The purpose of this research were get the isolates bacteria that could degrade the pesticide dicofol in Karawang paddy fields and discovered characteristics of bacteria that have potential to degrade pesticides. The research was conducted with the isolation and characterisation of bacteria from Karawang paddy soil, the characterisation of isolates bacteria by observation morphological and phenotypic include staining Gram and biochemical tests, test isolates bacteria resistence of dicofol, measuring the growth curve and High Performance Liquid Chromatography (HPLC) for discovering of decreased dicofol concentration during 24, 48, and 72 hours of incubation time. The result is six isolates, that are AA1, AA2, AA3, AA4, AA5, and AA6. Isolates AA1 is suspected as genus Phenylobacterium, isolates AA3 and AA6 are suspected as genus Pseudomonas, AA4 isolates is suspected as genus Bacillus, isolates AA5 is suspected as genus Alcaligenes, but isolates AA2 not yet be identified. The results indicate that isolate AA6 has most resistent to dicofol and most number of cells bacteria, that is 7.9x108. Isolate AA6 is also the most effective in degrading dicofol as much as it can reduce the concentration in amount of 76.0 ppm (84.45%) in MSM medium + 90 ppm dicofol. Keywords : Isolation, Characterisation, Bacteria, Resistention, Degradation, Dicofol Pesticide

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