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BERITA BIOLOGI
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Articles 24 Documents
Search results for , issue "Vol 18, No 3 (2019)" : 24 Documents clear
PLANKTON DISTRIBUTION IN CONTROLLED WATER OF MILKFISH LARVA CULTURE SYSTEM Afifah Nasukha; Titiek Aslianti
BERITA BIOLOGI Vol 18, No 3 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i3.3485

Abstract

The selection of planktons as live feed for milkfish larvae is a vital tool to meet the natural character as herbivorous species and to fulfill the needs for nutritious food for fish larval growth and survival. Phytoplankton Nannochloropsis sp. and zooplankton rotifer (Brachionus sp.) were two-selected plankton used as the main food source for the milkfish larvae. We performed this study in two times larval culture batch with four observations of tanks as replication. The results showed that we nourished both targeted planktons as larval food, regarding the positive impacts on larval growth (12±1,37 mm of total length, 7±4.89 mg of body weight) and a high survival rate (65.93–77.70%) achieved at the end of the culture period. Plankton diversity analysis presented that Class of rotifer (Monogononta) and Nannochloropsis sp. (Eustigmatophyceae) were both counted as the most dominant plankton group found in the rearing media, showing a decent sign of food supply for fish in rearing water column. The total number of planktons was high and had the tendency to follow the concentration of selected planktons over the culture period in the controlled water.  
KEANEKARAGAMAN DAN SEBARAN EKOLOGIS AMFIBI DI AIR TERJUN BARAMBAISAMARINDA, KALIMANTAN TIMUR Jusmaldi Jusmaldi; Aditya Setiawan; Nova Hariani
BERITA BIOLOGI Vol 18, No 3 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i3.3730

Abstract

Diversity and ecological distributions of amphibians in Berambai Waterfall area, East Kalimantan have never been known. The purposes of this study were to determine the diversity of amphibian species in relation to environmental conditions and the vertical-horizontal distribution. A total of 109 amphibians were captured using methods of the transect and the visual encounter survey for 20 days on two type observation habitats. The results of this study found 18 species from six amphibian families. Based on the number of species, the diversity amphibian index and dominance index have a stable of communities, with the high value of  Shannon-wiener  diversity index (H'),  the evenness  index (E), and the low value of dominance index (D) were 2.26, 0.78, and 0.16, respectively. Horizontal distribution of amphibians in their habitat showed that aquatic amphibian groups were found to be less than 5 m from the river bank, while terrestrial and semi-aquatic amphibians have a distribution of 5–15 m from the river bank. Vertical distribution of Polypedates leucomystax, Polypedates otilophus and Odorrana hosii in vegetation were found from 1.5–2.5 m above ground level, while Ansonia spinulifer, Chalcorana chalconota, Chalcorana raniceps were at a height of 0.5–<1.5 m from ground level. Diversity of amphibian in Berambai Waterfall area related to habitat conditions, while horizontal and vertical distributions are influenced by species, habits and food resources.   
NEW RECORD OF EURYCOMA APICULATA A.W. BENN (SIMAROUBACEAE) FROM FOREST RESERVE OF KENEGERIAN RUMBIO, RIAU, INDONESIA Zulfahmi Zulfahmi; Ervina Aryanti; Rosmaina Rosmaina
BERITA BIOLOGI Vol 18, No 3 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i3.3683

Abstract

During extensive field surveys in the 2015 year, Eurycoma apiculata A.W. Benn has been found for the first time in the forest reserve of Kenegerian Rumbio, Kampar District of Riau province. This finding is a new record of the medicinal plant in Indonesia. The taxonomic description and photographs of the species are given in this article.  
THE DIVERSITY AND DISTRIBUTION OF TWO FAMILIES OF SUMATRAN LAND SNAIL (GASTROPODA: CAMAENIDAE AND CYCLOPHORIDAE) Nova Mujiono; Windra Priawandiputra; Tri Atmowidi
BERITA BIOLOGI Vol 18, No 3 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i3.3746

Abstract

The diversity of land snail in Sumatra, Indonesia was firstly studied by Bock (1881), followed by some comprehensive studies by Degner (1928), Van Benthem Jutting (1959), and recently by Marwoto (2016). This research aimed to update the data on diversity and distribution of those two families, documenting new information on their distribution, make historical records of species occurrence, list species occurrence from inside and outside the conservation area. We collected primary data from 274 numbers of museum collections and secondary data from 29 literatures. In total, 58 species of Camaenidae and 66 species of Cyclophoridae were known from Sumatra. Fourteen land snail species, seven from family Camaenidae and seven from family Cyclophoridae, were added to the previous list of land snail species in Sumatra. There were 30 land snail species with new distribution ranges. 

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