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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 234 Documents
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SEBARAN DAN KARAKTER MORFOLOGI Endiandra (LAURACEAE) DARI SUMATRA, KOLEKSI HERBARIUM BOGORIENSE, PUSAT PENELITIAN BIOLOGI-LIPI Nalar Mutiara Esa; J Jumari; M Murningsih; Deby Arifiani
Jurnal Akademika Biologi Vol. 5 No. 4 Oktober 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Herbarium are authentic evidence in the form of plants that serve as a reference of identification to identify plant species. Endiandra is one of genus of family Lauraceae and widely used, however, the name Endiandra still not very well known. Knowledge of the distribution and morphological characters Endiandra in Sumatra necessary to complete the information Endiandra in Malesia region. Research using herbarium specimens Endiandra of Sumatra in the Herbarium Bogoriense with morphological approach and use the information on the specimen label to graph the distribution of heights and distribution maps using ArcGIS software. The characters are important in distinguishing the types Endiandra in Sumatra ie hair; presence or absence of, a lot or a little, the number of lateral veins of leaves and surface texture of the leaves and stems. Endiandra scattered in every province of Sumatra island in the lowlands to highlands 3-1100 meters above sea level from 1200 to 2000 meters above sea level.Keywords: Endiandra, morphology, distribution, Sumatra.
Pengaruh Tingkat Kepadatan Lalu Lintas dan Waktu Pengamatan yang Berbeda Terhadap Ukuran dan Jumlah Stomata Daun Glodokan (Polyalthia longifolia .Sonn) Heru Puji Raharjo; Sri Haryanti; Rini Budi Hastuti
Jurnal Akademika Biologi Vol. 4 No. 1 Januari 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Beberapa polutan yang berupa gas akan menyebabkan pencemaran udara. Adanya paparan polusi gas ini nantinya akan mempengaruhi kondisi tanaman glodokan (Polyalthia longifolia Sonn.) dalam jangka waktu tertentu. Tujuan penelitian ini mengetahui pengaruh waktu dan tingkat kepadatan lalu lintas terhadap ukuran porus dan jumlah stomata daun glodokan (Polyalthia longifolia Sonn.). Stomata merupakan tempat terjadinya pertukaran gas. Penelitian ini dilakukan pada bulan Januari sampai dengan Februari 2015 di area sekitar Kampus Universitas Diponegoro dan Laboratorium Biologi Struktur dan Fungsi Tumbuhan Fakultas Sains dan Matematika Universitas Diponegoro. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) pola faktorial dengan dua faktor yaitu waktu dan tingkat kepadatan lalu lintas. Penelitian ini menggunakan 6 perlakuan yaitu dengan tingkat kepadatan kendaraan tinggi, sedang dan rendah yang diamati pada pagi dan sore hari, masing-masing dengan 3 ulangan. Analisis data yang digunakan adalah Analysist Varians (ANOVA), apabila menunjukkan hasil yang signifikan akan dilanjutkan dengan uji Duncan’s Multiple Test (DMRT) pada taraf kepercayaan 95%. Parameter yang diamati yaitu panjang dan lebar porus stomata, jumlah stomata, ketebalan daun, luas permukaan daun dan parameter pendukung yaitu jumlah kendaraan yang melintas. Hasil penelitian menunjukkan bahwa kepadatan lalu lintas memberikan pengaruh nyata terhadap panjang dan lebar porus stomata, serta luas permukaan daun. Sedangkan pada jumlah stomata dan ketebalan daun tidak berpengaruh nyata terhadap tingkat kepadatan lalu lintas. Waktu pengamatan memberikan pengaruh terhadap panjang dan lebar stomata. Ukuran porus terbesar terjadi pada pagi hari.Kata kunci :Glodokan (Polyalthia longofolia Sonn.), polusi, jumlah, ukuran, stomata
KERAGAMAN BAKTERI ASAM LAKTAT SECARA MOLEKULER PADA ILEUM DAN SEKUM AYAM BROILER YANG DIBERI PAKAN PREBIOTIK BEKATUL DAN BEKATUL HASIL FERMENTASI Laelatul Baniyah; Siti Nur Jannah; MG Isworo Rukmi
Jurnal Akademika Biologi Vol. 6 No. 3 Juli 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Lactic Acid Bacteria (LAB) is a digestive tract microflora that play a positive role in poultry health. The number and diversity of LAB in the digestive tract affected by several factors, among them was the kind of feed. The purpose of this research was  to know the molecular diversity of Lactic Acid Bacteria (LAB) in broiler’s ileum and cecum  after  feeding with  prebiotic bran and Rhizopus oryzae fermented  bran which was added to commercial feed. The molecular analysis was done using T-RFLP method , Hae III and Msp I were used as restriction enzymes.  The number of phylotype, relative abundance, Shannon diversity index (H '), evenness (E), and Dominance (D)  were examined . The results indicated that the addition of bran prebiotics on commercial feed showed a higher  diversity of lactic acid bacteria on broiler’s ileum and cecum, compared  with the addition of Rhizopus oryzae fermented  bran. The dominant BAL types are Lactobacillus spp, L. delbrueckii subs. Bulgaricus, L. intermedius, L. amilovorus, uncultured bacteria 87 bp, 280 bp, 331 bp and unidentified bacteria 74 bp, 82 bp, 131 bp. Keywords: Diversity, Lactic Acid Bacteria, Prebiotics, Bran, T-RFLP
AKTIVITAS ANTIMIKROBA KOMBINASI REBUSAN DAUN SIRIH HIJAU (Piper betle) DAN DAUN SIRIH MERAH (Piper crocatum) TERHADAP Candida albicans. Diani Kurniawati; MG. Isworo Rukmi; Arina Tri Lunggani
Jurnal Akademika Biologi Vol. 3 No. 1 Januari 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Piper betle and Piper crocatum leaf extract each has proven to have antimicrobe effect against Candida albicans, this is the reason why piper betle leaf often used as mixture of mouthwash or vagina cleanser. This research aim is to know the antimicbial activity of combination between stewed piper betle and piper crocatum leaf against Candida albicans. Experimental design that used is Completely Randomized Design (CRD) factorial design with 2 factor. Combination  of stewed green betel leaf and red betel leaf respectively 100% P.betle and 0% P. crocatum; 75% P.betle and 0% P. crocatum; 50% P.betle and 50% P. crocatum; 25%  P.betle and 75% P. crocatum; 0% P.betle and 100% P. crocatum. A negative control is steril aquadest, while second factor is contact time 0, 30 and 60 minute. The variables meansured were the growth of colonies in each treatment combination. The result showed that combination of 100% P.betle and 0% P. crocatum; 75% P.betle and 0% P. crocatum; 50% P.betle and 50% P. crocatum; 25%  P.betle and 75% P. crocatum have antimicrobial activity is  high. This result proven by absence of colony growth after treatment. The best antimicrobial activity found on treatment with only addition of red betel at 60 minutes of contact time. Keywords : Piper betle, Piper crocatum, antimicrobial, Candida albicans
DISTRIBUSI DAN REGENERASI JAMUJU (Dacrycarpus imbricatus (Blume) de Laub) DI CAGAR ALAM GEBUGAN KABUPATEN SEMARANG Evananda Waskitaningtyas; Sri Utami; Erry Wiryani
Jurnal Akademika Biologi Vol. 7 No.3 Juli 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Cagar Alam Gebugan merupakan salah satu hutan lindung yang masih memiliki habitat alami Dacrycarpus imbricatus. D. imbricatus memiliki potensial penghasil kayu yang banyak digunakan oleh masyarakat, sehingga jamuju banyak dieksploitasi yang menyebabkan jenis pohon ini sulit ditemukan di habitat alaminya. Penelitian ini bertujuan untuk mengetahui distribusi dan regenerasi D. imbricatus, vegetasi di sekitar jamuju serta mengkaji faktor lingkungan abiotik dari habitat D. imbricatus. Metode yang digunakan untuk pengambilan jamuju dengan metode sistematik. Jumlah plot yang digunakan yaitu sebanyak 15 dengan luas masing-masing plot 10 m x 10 m. Masing-masing plot dihitung jumlah individu jamuju pada tingkat pohon, tingkat tiang, tingkat pancang dan tingkat semai. Vegetasi di sekitar jamuju untuk pohon dengan plot  10 m x 10 m ,semak dengan plot 5 m x 5 m dan herba dengan plot 1 m x 1 m. Data mengenai distribusi D. imbricatus diolah dengan menggunakan analisis distribusi poisson. Vegetasi sekitar jamuju dianalisis dengan metode Analisis Vegetasi. Hasil penelitian bahwa distribusi D. imbricatus adalah mengelompok. Regenerasi jamuju di Cagar Alam Gebugan berjalan kurang baik, hal ini ditunjukkan oleh kerapatan individu tingkat pohon (5 individu/0,15 ha= 33,3 ind/ha), tingkat tiang (tidak ditemukan), pancang (4 individu/ 0,15 ha= 26,6 ind/ha), dan semai (21 individu/ 0,15 ha= 140 ind/ha). Vegetasi di sekitar jamuju terdapat 11 jenis pohon dengan INP tertinggi adalah Castanopsis argentea, terdapat 5 jenis semak dengan INP tertinggi adalah Calliandra. sp dan terdapat 6 jenis herba dengan INP tertinggi adalah Orthosiphon aristatus. Faktor lingkungan jamuju ditemukan tumbuh pada ketinggian 1.050 m dpl, suhu 26,70C sampai 270C, kelembaban 53% sampai 61%, pH tanah 6,3 sampai 7.
STRUKTUR KOMUNITAS MIKROARTROPODA TANAH DI LAHAN PENAMBANGAN GALIAN C ROWOSARI, KECAMATAN TEMBALANG, SEMARANG Wiatri Larasati; Rully Rahadian; mochamad Hadi
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Rowosari miningsite isthe ‘C’ type of excavation area in Semarang. Mining activities may affect environmental disturbance, including on soil fauna. This research aims to determine the community structure of soil microarthropods in Rowosari mining area. The research was conducted in August-September 2015. Soil samples were taken on diagonal plot of 5x5 m2 with a five-point sampling on two stations, namely Post Mining Area (PoMA) and Pre Mining Area (PeMA). The analysis used in the research are relative abundance index, Shannon-Weiner diversity index, evenness index, and Sorensen similarity index. The results shows that there are 360-660 individuals/m2 from 10 ordo and 24 taxa found in Rowosari Excavation Site. The highest relative abundance index is Carabidae (22,22) in PoMA station and Prostigmata (21,21) in PeMA station. The diversity both station belongs to medium category (2,43-2,45). The highest evenness index is 0,95. The similarity taxa of soil microarthropods in two stations are categorized as medium. Community structure of soil microathropods in Post Mining Area and Pre Mining Areawere no significant differences. Keywords: Community structure, Soil microarthropods, MiningexcavationC.
STRUKTUR KOMUNITAS MIKROARTHROPODA BRYOFAUNA EPIFIT DI ZONA TROPIK GUNUNG UNGARAN, JAWA TENGAH Rina Eka Yuniarti; Rully Rahadian; Lilih Khotim Perwati
Jurnal Akademika Biologi Vol. 2 No. 1 Januari 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

       Mount Ungaran has various diversity of flora, including bryophytes. Epiphytic bryophytes are the habitat of bryofauna most of them are  microarthropods. The objective of this research was to determine community structure of epiphytic bryofauna in tropical zone of Mount Ungaran. This research was conducted in tropical zone of Mount Ungaran at three different  altitudes. The sampling methods was using square plots. Bryophytes were collected in plots 10x10 cm on tree trunks. Furthermore, the specimens were extracted using Barlese funnel at Laboratory of Ecology and Biosistematics, Department of Biology, Diponegoro University up to seven days. The results shows there are 5 classes of 16 orders and 30 sub orders/families. The most diverse of epiphytic bryofauna found at altitude 980 m asl and 1100 m asl (H’= 2,30), while the lowest at 750 m asl (H’= 1,87). Order of Acarina is consistantly found dominant in all altitudes. Meanwhile, at 1100 m asl the order of Thysanopera has also high abundant or dominant. Keywords : community structure, epiphytic bryophytes, bryofauna, tropic zone.
PANJANG, BOBOT TRAKTUS DIGESTIVUS DAN BOBOT TUBUH PUYUH (Coturnix coturnix japonica) SETELAH PENAMBAHAN TEPUNG KUNYIT(Curcuma longa) DAN TEPUNG IKAN PADA PAKAN Siti Zulaikhah; Koen Praseno; Tyas Rini Saraswati
Jurnal Akademika Biologi Vol. 2 No. 3 Juli 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Quail age and digestive activity continuously contribute to decreased tissue function and digestion , causing tissue damage . Turmeric contains essential oils and curcumin . Fish meal is high in protein . This sstudy of this research was to determinate the effect of turmeric powder and fish meal after the long decline of productivity, digestive tract weights and body weight. This research used Completely Randomized Design ( CRD ) and analyzed by ANOVA. Showed significant difference when tested further by Duncan's test at 95% significance level. Animals were used 60 quails grouped into 4 treatments , with 15 replicates , the study concludes on the ninth month . Treatment given P0 : Group quail fed standard , P1 : Group quail fed standard and turmeric 54mg / head / day , P2 : quail group given standard feed plus 85 % fish meal, 15 % , P3 : Group quail fed plus standard feed fish meal and turmeric . Treatment was given at the age of quail 7-8 months . The main parameters measured were length, weight of digestive tract and body weight . Supporting parameters measured were feed intake, and feed conversion . The results are length, weight and body weight digestive tract there is not a real difference. Consumption and feed conversion showed real differences. The addition of turmeric, fish meal and combination of tumeric and fish meal are not potentially add length digestive tract weights and body weight.Keywords: Quail (Coturnix coturnix japonica), turmeric, fish meal, the length, the weight of digestive tract and body weight
STRUKTUR KOMUNITAS PLANKTON DI KAWASAN WANA WISATA CURUG SEMIRANG KECAMATAN UNGARAN BARAT, SEMARANG Delliana Ratna Sari; Jafron Wasiq Hidayat; Riche Hariyati
Jurnal Akademika Biologi Vol. 6 No. 2 April 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Objective of the study was to know the structure of plankton community and to know the influential physical and chemical factors in the structure of plankton community in Semirang. This research was conducted on 6 stations with different water body condition. Results showed that the number of plankton species obtained were 12 species in the Bacillariophyta Division. Plankton species that widely found were Achnanthes sp, Cymbella tropica and Cocconeis pediculus. The relative abundance index categorized into the dominant species category. The plankton diversity index were mostly included in the moderate category. Similarity index belongs to the category of even distribution, none dominance of a kind. The similarity index is mostly included in the high category. Physical and chemical factors in these waters have good water quality for plankton life.  Keywords: plankton community structure, freshwater, ecotourism waterfall Semirang 
Pertumbuhan Tunas Tacca leontopetaloides L. Hasil Mikropropagasi Setelah Pemberian Radiasi Sinar Gamma Co60 dan Hormon Tumbuh yang Berbeda Darnia Astari Parastiti; Endang Kusdiyantini; Endah Dwi Hastuti; Betalini Hapsari; Tri Muji Ermayanti
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Taca  (Tacca  leontopetaloides  L.)  is  one  of  the  plant  family Dioscoreaceae  that  contain compounds   glikosida   flavonoid   called   taccalin   and   taccalonoides   who   potential   as antioxidants. Taka (Tacca  leontopetaloides L.) specifically has not been cultivated, grown only a limited area around the beach, it is necessary to plant vegetative propagation system faster with more results in tissue culture systems. This study aims to determine the growth and the antioxidant potential shoots Tacca leontopetaloides L. mikropropagasi results after administration  of  Co60  Gamma  ray  radiation  and  different  growth  hormones.  Research method  uses  completely  randomized  factorial  design  (RAL)  with  4  treatment  doses  of Gamma radiation Co60 is 0 Gy, 5 Gy, 20 Gy, and 30 Gy and 3 treatment of growth hormone that MSo, MSo + 0,5 BAP and MSo + 0,5 Kinetin with 3 replicates. Shoots taka from results mikropropagasi grown in  vitro and has been irradiated with Co60 Gamma rays. Parameters tested were growth of shoots, amount of leaves, till, roots and wet weight taka. The results showed  that  Gamma radiation  Co60  and  plant  regulator  cytokinin  effect  on  shoots  taka, amount of tillers, leaf, root and wet weight taka. Keywords: Taka (Tacca leontopetaloides L.), Mikropropagation, Growth Hormone.

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