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BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Published by Southeast Asian Regional Centre for Tropical Biology
ISSN : 02156334     EISSN : 1907770X     DOI : http://dx.doi.org/10.11598/btb
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary
BIOTROPIA, The Southeast Asian Journal of Tropical Biology, is a scientific publication of the Southeast Asian Ministers of Education Organization (SEAMEO) – Southeast Asian Regional Center for Tropical Biology (BIOTROP). It publishes articles in the broad areas of tropical ecosystems and environmental impacts, biodiversity conservation and sustainable development and biotechnology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 6 Documents
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Search results for , issue "Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007" : 6 Documents clear
DEVELOPMENT OF MUD CRAB (SCYLLA OLIVACEOUS HERBST) OOCYTE AFTER IN VITRO CULTURE WITH THORACIC GANGLION EXTRACTS OF ESTUARINE CRABS (NEOEPISESARMA LAFONDI JACQUINOT AND LUCAS) Fujaya, Yushinta; Trijuno, Dody Dharmawan; Sulistiono,; Watanabe, Seiichi; Boediono, Arief
BIOTROPIA Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.993 KB) | DOI: 10.11598/btb.2007.14.1.22

Abstract

Thorax ganglion was reported as a source of stimulating hormone for gonad development. The aim of this research was to study the development of mud crab (Scylla olivaceous) oocytes cultured in in vitro medium supplemented with thoracic ganglion extracts of Neopisesarma lafondi. Immature crabs with 110 mm carapace width were collected from the mouth of Bawana Marana Rivers, Maros Regency of South Sulawesi, Indonesia. Pieces of ovarian tissues from those crabs were incubated within 24 hours in culture medium (Medium-199 with 100 IU/ml Penicilin-G) supplemented with 2 mg/ml thoracicganglion extract. Result showed that the diameter of mud crab oocytes was increased in congruent with the incubation time. The development was prominent after in vitro incubation for 8 hours (P
RELATIONSHIP BETWEEN CROP DEVELOPMENTAL PHASES AND AIR TEMPERATURE AND ITS EFFECT ON YIELD OF THE WHEAT CROP (Triticum aestivum L.) GROWN IN JAVA ISLAND, INDONESIA Handoko, I.
BIOTROPIA Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (619.534 KB) | DOI: 10.11598/btb.2007.14.1.24

Abstract

About four million tonnes of wheat has been imported annually, because hardly no wheat crop is cultivated in Indonesia. High temperature is probably the major limiting factor for cultivating the crop in a large scale. This research aims to find out the relationship between temperature and wheat (DWR162 cultivar) crop development to derive its developmental parameters (base temperature and thermal unit) and to further study its effects on grain yield. Experiment was conducted at five locations in Java Island with distict altitudes range from 28 to 1,650 m to represent a wide range of averaged air temperature (27.5 to 16.5 oC). The base temperature derived from this experiment were 8.3, 3.8, and 15.1 oC while the parameters of thermal unit were 189, 1053 and 290 d. oC, respectively for the phases of sowing-emergence, emergence-anthesis, and anthesis-physiological maturity. Grain yield of the wheat crop decreased with increasing temperature of about 10% per 1oC increase above averaged temperature of 16.5 oC. Increasing temperature caused shorter duration during vegetative growth (emergence-anthesis) and grain filling period (anthesis-maturity which resulted in smaller biomass and the grain yield.
CHROMOSOMES OF THE PHILLIPINE SNAKE-HEAD GUDGEON, OPHIELEOTRIS APOROS (ELEOTRIDAE) FROM LAKE TAAL, LUZ ON ISLAND. Masagca, Jimmy T.; Ordonez, Jose A.
BIOTROPIA Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (657.001 KB) | DOI: 10.11598/btb.2007.14.1.20

Abstract

Metaphase chromosomes analyzed from the anterior kidneys of Ophieleotris aporos obtained from Lake Taal in Luzon Island, Philippines revealed that the diploid chromosome number was 2n=46. The fundamental number (FN) is 48 (2 submetacentric and 44 acrocentric chromosmes) was known. There was no distinguishable hetemorphic pair of chromosomes in the Giemsa-banded metaphase spreads. This is an initial report on the chromosome set of O. aporos in the this country.
THERMAL INSULATION MATERIAL MADE FROM OIL PALM EMPTY FRUIT BUNCH FIBRES Erwinsyah,; Richter, C.
BIOTROPIA Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2007.14.1.23

Abstract

The objectives of this study were to characterize cut oil palm empty fruit bunch (EFB) fibres to focus on the manufacturing of environmentally friendly thermal insulation material from these fibres for building purposes.
THREE DIFFERENT TYPES OF PLASTIC PACKAGING MATERIALS: THEIR EFFECTS ON MOULD INFECTION AND AFLATOXIN CONTAMINATION IN PEANUTS. Dharmaputra, Okky Setyawati; Retnowati, Ina; Ambarwati, Santi
BIOTROPIA Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2007.14.1.21

Abstract

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NOTES ON THE PROFILE OF INDONESIAN INVASIVE ALIEN PLANT SPECIES Tjitrosoedirjo, Sri Sudarmiyati
BIOTROPIA Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2007.14.1.25

Abstract

An alien species, which becomes established in natural or semi-natural ecosystems or habitas, is an agent of change and threatens native biological diversity.  The Convention on Biological Diversity (CBD) declared in 1992, in which the issue on invasive alien species was raised, was ratified by the Indonesian Government in 1994.  Protecting our biodiversity will be our moral obligation to comply with CBD.  Inventory on the invasive alien plant species in Indonesia should be done by field surveys aside from the data collected from the references and herbarium specimens.  Field studies should be carried out to get complete figures, to identify the new ones, to determine their distributions, to plan their management including prevention to spread, containment and movement or mitigate their impact to environment.  Sometimes it is difficult in determining whether the plants are aliens or not. Cooperation with botanists and taxonomists in other parts of the world is necessary.  There are some species of invasive aliens plant in Indonesia, which have to be watched for their aggressiveness i.e. Acasia nilotica (L.) Willd. ex Del., Eupatorium sordidum Less., Jatropa gossipifolia L., Mikania micrantha Kunth, Mimosa pigra L., Opuntia sp., and Piper aduncum L. have to be watch for their aggressiveness.  Notes on some important invasive alien plant species are discussed.

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