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SJAFRIDA MANUWOTO

Unknown Affiliation

Author-ID : 2416148

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education

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Articles

Functional Group of Spiders in Cultivated Landscape Dominated by Paddy Fields in West Java, Indonesia I WAYAN SUANA; DEDY DURYADI SOLIHIN; DAMAYANTI BUCHORI; SJAFRIDA MANUWOTO; HERMANU TRIWIDODO; CHRISTIAN HANSJOACHIM SCHULZE
HAYATI Journal of Biosciences Vol. 16 No. 1 (2009): March 2009
Publisher : Bogor Agricultural University, Indonesia

Distribution of spiders in all colonized environments is limited by biotic and abiotic factors requiring adaptations with respect to, for example microhabitat choice and hunting behavior. These two factors were frequently used to group spiders into functional groups. In this study our objectives were to (i) group of genera of spiders into functional group based on their microhabitat specificity, hunting behavior, and daily activity; and (ii) compare the number and composition of functional group of spider at each habitat type and period of paddy growth. The study was conducted at a landscape dominated by paddy fields in Cianjur Watershed for a period of 9 months. Four different habitat types (paddy, vegetable, non-crop, and mixed garden), were sampled using five trapping techniques (pitfall traps, farmcop suction, sweep netting, yellow-pan traps, and sticky traps). The Unweighted Pair-Group Average and the Euclidean Distances were used to generate dendrogram of functional group of spider. We found 14 functional groups of spider at genus level. The number of functional group of spider at four habitat types was differing, but the composition was similar, because all habitats were closed to each other. Habitat structure diversity and disturbance level influenced the number of functional group of spider. Different architecture of vegetation and availability of differ prey during paddy growth, causing the composition of functional group of spider in each period of paddy growth was changed, although its number was unchanged. Key words: spiders, functional group, agricultural landscape, Cianjur Watershed

Diversity of Pollinator Insects in Relation to Seed Set of Mustard (Brassica rapa L.: Cruciferae) TRI ATMOWIDI; DAMAYANTI BUCHORI; SJAFRIDA MANUWOTO; BAMBANG SURYOBROTO; PURNAMA HIDAYAT
HAYATI Journal of Biosciences Vol. 14 No. 4 (2007): December 2007
Publisher : Bogor Agricultural University, Indonesia

Pollinators provide key services to both natural and agricultural ecosystems. Agricultural productivity depends, in part, on pollinator populations from adjacent seminatural habitats. Here we analysed the diversity of pollinator insects and its effect to seed set of mustard (Brassica rapa) planted in agricultural ecosystem near the Gunung Halimun-Salak National Park, West Java. At least 19 species of insects pollinated the mustard, and three species, i.e. Apis cerana, Ceratina sp., and Apis dorsata showed a high abundance. The higher abundance and species richness of pollinators occurred at 08.30-10.30 am and the diversity was related to the number of flowering plants. Insect pollinations increased the number of pods, seeds per pod, seed weights per plant, and seed germination. Key words: diversity, pollinator insects, social bees, solitary bees, seed set, Brassica rapa

Urban pests like cockroaches, mosquitoes, and flies can transmit human diseases that cause health problems in the society. Currently, mosquito is main insect that transmit very deadly diseases, such as dengue fever, cikungunya, and malaria. Prevention of those diseases is generally focused on controlling the vectors in various ways, such as fogging, the use home pesticides, sanitation, use of mosquito repellents, electric rackets, and other traditional ways developed by the community (mosquito Titiek Siti Yuliani; Hermanu Triwidodo; Kooswardhono Mudikdjo; Nurmala K. Panjaitan; Sjafrida Manuwoto
Forum Pasca Sarjana Vol. 34 No. 3 (2011): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Urban pests like cockroaches, mosquitoes, and flies can transmit human diseases that cause health problems in the society. Currently, mosquito is main insect that transmit very deadly diseases, such as dengue fever, cikungunya, and malaria. Prevention of those diseases is generally focused on controlling the vectors in various ways, such as fogging, the use home pesticides, sanitation, use of mosquito repellents, electric rackets, and other traditional ways developed by the community (mosquito net, gauze, water). The purpose of this study was to describe the relationship between characteristics of peoples live in Jakarta (based on age, sex, education, and income level) to their behavior in using home pesticides and to know the impact of those pesticides to peoples and pets live in their houses. Research sites were purposively directed to the areas that were appropriate with the substances and purposes of this study. Interviewed was conducted to the respondents (housewives) and inspection of their houses were also conducted to classify their houses as clean, moderately clean, and dirty or slum. Based on a survey to 155 respondents, it was revealed that respondent characteristics as well as their house conditions influenced the behavior of those respondents in choosing home pesticides. Majority of housewives (28.21%) use liquid pesticides which were contains the active ingredient of cypermethrin 0.4 g/l, imiprotrin 0.32 g/l, and transflutrin 0.2 g/l. In addition, 47.26% of them ignored the instruction written on the label in using those pesticides. Awareness of those respondents was still low in terms of dumping the package of pesticides; 96.64% of respondents dumped pesticides to the dumpster near their houses. Commercial advertencies from electronic media, especially TV, influence half of the respondents (52.74%) in choosing home pesticides used. In general, it can be summarized that the awareness of respondents in using home pesticides were still low. Most housewives did not know the danger of those chemicals and how to use it properly. Only 38.46% of them used non-chemical methods, such as insect net. Key words: home pesticides, active ingredient, urban pest, housewife, the environment

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