Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH)
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THE DIVERSITY AND ABUNDANCE OF SPIDERS (Arachnida) IN LIWA BOTANICAL GARDEN
Full text linkSpiders are organisms that can adapt to various environments throughout the earth's surface from arctic regions to desert areas. Many spiders occupy areas with low vegetation and shrubs. The Liwa Botanical Garden has dense vegetation which is an ideal habitat for spiders. This study aims to determine the diversity and abundance of spiders (arachnids) in open and closed areas in the Liwa Botanical Garden. The research was conducted in November - December 2019. Spiders were sampled using a survey method by making line transects at predetermined locations. Sampling using sweep nets and pit traps. The spiders found were identified in the Zoology Laboratory, Biology Department, Faculty of Mathematics and Natural Sciences, University of Lampung, and their relative abundance was calculated. The results showed that 249 individual spiders were grouped into 9 families and 21 species. The family with the highest number of individuals was Aranidae, while the least number of families was Phalangiidae
Phyllanthus tenellus Roxb. (Phyllanthaceae): A NEW RECORD TO THE FLORA OF SUMATERA
Full text linkPhyllanthus is a genus with many members that are quite widespread throughout the world. Previously, this genus belonged to the Euphorbiaceae family but based on molecular studies it was separated into separate Phyllanthaceae families. Botanical explorations carried out on the islands of Bangka and Belitung indicated that Phyllanthus tenellus had not been recorded yet in Phyllanthus in Sumatra. Phyllanthus tenellus is a new alien plant record for the flora of Sumatra and increases the number of Phyllanthus species in Sumatra to 14 species. This species is thought to have been introduced accidentally and has naturalized in urban areas. A brief description, the factors causing the presence of this species in Sumatra, and their potential uses are described
The Effect of PEG (Polyethylene Glycol) 6000 on Water Spinach (Ipomoea reptans L.) Growth
Full text linkThe purpose of this research was to know whether PEG 6000 can decrease the growth of water spinach. This study was conducted in a Completely Randomized Design with main factor is PEG with 3 levels ofconcentration: 0% w/v, 10% w/v, 20% w/v and 30% w/v with 5 repetitions. As parameters were plantheight, number of leaves, fresh weight, dry weight, and relative water content. Levene test, analysis ofvariance, and Tukey test were conducted at 5% level. The result shows that the plant period is positivelylinearly correlated with plant height at all PEG concentrations with different growth rates. Lowest growthrate at 20% and 30% PEG concentrations. PEG with 20% and 30% concentrations significantly decreasein the number of leaves, wet weight, dry weight, but there is no effect on relative water content. Theconclusion is water stress conditions will decrease the growth of water spinach
THE NUMBER of (Aedes sp.) EGGS LAYING ON DIFFERENCES TYPE AND SPECIES OF PHYTOTELMATA IN AREA OF LAMPUNG UNIVERSITY
Full text linkPhytotelmata is the part of a plant that can collect water and can be used as a natural breeding site for insects including mosquitoes. This research was conducted in August-December 2019 in the University of Lampung to find out the number of egg in phytotelmata and find the type and species of phytotelmata which are natural breeding site for Aedes sp. This study used an observatory method with a descriptive approach in the field. Analysis data was done using ANOVA and continued with the BNT test with 95% (a=5%) confidence. This research show that it found 3 types of phytotelmata like fruit hole, tree hole, axillary with six species of Phytotelmata such as Cocos nucifera, Artocarpus heterophyllus, Bambusa sp., Bauhinia purpurea, Colocasia esculenta, and Musa paradisiaca. The most potential species of phytotelmata became the natural breeding site for Aedes sp. mosquito is a Cocos nucifera with an average of 16,33 eggs
The Diversity of Freshwater Fish Species in Way Sindalapai River, Liwa Botanical Garden, West Lampung
Full text linkThe diversity of freshwater fish in Way Sindalapai River is quite abundant but there has not been much study on the diversity of fish in Way Sindalapai River. This study aims to determine the diversity of freshwater fish species in Way Sindalapai River, Liwa Botanical Garden. The study began with a preliminary survey with a purposive sampling method and sampling was carried out at 3 sampling locations. The tools used in this study include fishing nets (gill nets), fishing rods, scoop, traditional fishing gear (raas), Global Positioning System (GPS), rulers, and cameras. The sampling points include upstream, middle, and downstream areas. The method used in sample identification is by measuring the morphometry of the samples directly at the sampling location which includes total length, standard length, head length, and height, and collection of fish samples photos. Research parameters and data analysis include environmental factors, the diversity index, the evenness index, and the dominance index. The results showed that 170 fishes were found, 8 species, 2 families, and 4 genera. The fish diversity index in the Way Sindalapai river is included in the medium category from the Shanon-Wiener index calculation results, starting from the upstream, middle, downstream, respectively 1.37; 1,34 and 1,22. Evenness index at all locations are included in the low category from the Shannon-Evenness index calculation results, respectively 0.16; 0.14; and 0.12. The dominance index at all locations is included in the low category based on Simpson's dominance index, which has a value of 0.35; 0.32; and 0.28. Based on the conservation status of the IUCN Red List, ichthyofauna in the Way Sindalapai river is 5 species of low risk (least concern) namely Barbodes microps (wader goa), Rasbora bunguranensis (seluang), Barbodes binotatus (wader cakul), Thynnichtys thynnoides (lumoh), Channa striata (bogo). One species that is critically endangered is Rasbora tawarensis (depik), and two species are lacking information (data deficient) namely Rasbora sumatrana (seluang), and Rasbora semilineata (seluang
Nepenthes mirabilis (Lour.) Druce Planlet at a Various Levels of Murashige & Skoog Medium Density In Vitro
Full text linkThis study aims to determine the variation of the stomata index of the Kantong Semar (Nepenthes mirabilis) planlet at a various medium density of the Murashige and Skoog. This study used a Completely Randomized Design using one factor (medium density of the Murashige and Skoog). We used 5 levels of medium density, i.e.: 1/16 MS, 1/8 MS, 1/4 MS, 1/2 MS, and MS. Homogeneity test used Levene’s test of 5% significance level, then analysis of variance is carried out at 5% significance level and followed by Tukey test at 5% significance level. The results showed that the lower the level of Murashige and Skoog medium density on the Nepenthes mirabilis plantlet, the stomata index also increased
Genetic Relationship of Banana at Bandarlampung City Based on The Number of Chromosome and Genom Type
Full text linkA banana was rank 4th as food consumed by the world community after rice, wheat, and corn. Identification and characterization were important steps to explore the potential and important value of this plant. This study aims to obtain the kinship profile of banana germplasm in Bandarlampung City based on the number of chromosomes and their genome types. Characterization of banana accession is done by observing the morphological characteristics referring to 15 characters from Simmonds and Shepherd with the expected score of genomic determinants modified by Silayoi and Camchalow. The results of dendrogram analysis showed that on a scale of 20-23 obtained 2 groups of banana accessions. The first group consisted of 7 accessions of bananas, namely Kepok Kapas, Kepok Manado, Kepok Kuning, Rabig, Kepok Batu, Raja Sajen, and Pisang Batu. The second group consisted of 15 accessions, namely Kepok Abu, Horn, Thousand, Janten, Mas Kuning, Mas, Muli, Rejang, Ambon Lumut, Papan, Cavendish, Ambon Kuning, Morosebo, Rajah Sereh, and Raja Nangka. Whereas 4 accessions, namely Ambon Australia, Kepok Lebanon, Kidang and Raja Bakar, could not be analyzed for their kinship because the data collection of the banana generative phase had passed or had not yet entered the generative phase. Whereas 1 accession, namely Musa ornate, is believed to be included in the Rhodhoclamys section so that the genome type cannot be determined. Based on group analysis obtained 2 large groups at a scale distance of 20-23. At a smaller scale distance of 10 obtained a subgroup with a large number of members
ANALISIS VEGETASI DALAM UPAYA PENGEMBANGAN WISATA DI TAMAN WISATA ALAM PUNTI KAYU PALEMBANG PROVINSI SUMATERA SELATAN
Full text linkPunti Kayu Natural Tourism Park is a conservation forest contained in Palembang with an area of 50 hectares. Conservation forest utilization as a natural tourism park has a fantastic tourism development potential. Considering this matter, it is necessary to research about vegetation analysis at Punti Kayu nature tourism park for tourism development at Punti Kayu Palembang. The purpose of this research is to know the composition and structure of tree vegetation at TWA Punti Kayu Palembang. The research was conducted from April to June 2017. The method used in this research is Simple Random Sampling with 63 plot total sample.The results of this study obtained 24 tree species consisting of 949 tree phases, 114 pole phases, 141 sappling phases, and 375 phases of seedlings.Tree phases was dominated by Pinus Spesies with total 750 trees (INP 212,65%), in the pole phase, sapplings phase and seedling phase were dominated by Talok with total 25 poles (INP 57,96%), 17 sapplings (INP 39.89%) and 60 seedlings (INP 29.51%), The level of diversity of tree species and seedlings included in the low category, the tree of 0.493 and the seedlings of 0.824. One characteristic of good vegetation is the high level of species diversity. according to Kristinawanti et al (2013) good tree vegetation will have a positive impact on increasing tourist visits The results of this research can be used to support tourism in Punti Kayu Nature Tourism Park because it can be used as a reference to assess the management of Punti Kayu Nature Tourism Park
Co-Culture Anoxygenic Photosynthetic Bacteria With Bacillus sp. Isolated From Hanura Beach Against Vibrio sp.
Full text linkA mangrove forest ecosystem is a place where many special Bacillus sp. found. This study aims to obtain Bacillus sp. isolates that can inhibit the growth of Vibrio sp. This study was conducted by selecting 77 Bacillus sp. isolates from the Hanura mangrove forest area. In addition, selected bacteria were tested for salt stress, pH stress, pathogenicity test, and antibiotic susceptibility test. Selected isolates were cultivated together with Vibrio sp. for 7 days. Bacillus sp. and Vibrio sp. cultured again with the addition of anoxygenic photosynthetic bacteria for 4 days. From the results of the initial selection, 4 isolates could inhibit the growth of Vibrio sp. The final results showed that Bacillus IL2K8 isolates were known to inhibit the growth of Vibrio sp., can grow at salinity 0%, 3%, 6% and pH 7 and pH 10. IL2K8 isolates are not pathogenic, resistant to amplicin antibiotics, streptomycin, nalidixic acid, and chloramphenicol but sensitive to trimethoprim antibiotics. In the joint culture of liquid media IL2K8 together with Anoxygenic Photosynthetic Bacteria (APB) isolates IL2K8 can inhibit the growth of Vibrio sp
Aggressiveness and Libido of Male Mus musculus L. in Ethanol Extract of Red Ginger (Zingiber officinale Roxb. var. Rubrum)
Full text linkThe residue of paraquat herbicides may cause human health problems. Paraquat causes the testosterone hormone to decline. Testosterone hormone affects aggressive and sexual behavior. It is caused by free radicals in the body. Free radicals can be non-reactive if in the body there are antioxidants. Red ginger could be used as an antioxidant because it has active phenolic compounds, such as arginine, gingerol, shogaol, zingerone, gingerdiol, and zingiber. Ginger could increase serum testosterone levels. The purpose of this research is to know the effect of red ginger ethanol extract on aggressiveness and libido of male mice induced by paraquat herbicide. This study used a Completely Randomized Design (RAL) consisting of six treatment groups with four replications each. Group P1 as control (aqua dest), P2 (paraquat at dose 20 mg/kg BM), P3, P4, P5 (paraquat with dose 20 mg/kg BM and red ginger extract at 200 mg/kg BM, 400 mg/kg BM, 600 mg/kg BM) and P6 (red ginger extract at 600mg/kg BM). Paraquat is given 2 times a week for 21 days and the red ginger extract is given daily for 35 days. The result of analysis with One-way ANOVA and continued BNT at 5% showed that giving of red ginger ethanol extract can increase aggressive behavior and libido of male mice induced paraquat herbicide