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AUGMENTASITUNGAU PREDATOR FAMILIA PHYTOSEIIDAE RESISTEN TEMPERATUR SEBAGAI UPAYA KONSERVASI BIODIVERSITAS BERKELANJUTAN DALAM PENGENDALIAN Tetranychus urticae

Prosiding Vol 3, No 1 (2012)
Publisher : Prosiding

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Abstract

Tujuan dari penelitian ini adalah untuk mengetahui karakter padi gogo toleran kekeringan dengan daya hasil tinggi pada kondisi kadar air tanah rendah pada sistem tanam intercrops dengan rumput. Penelitian dilakukan di lahan tadah hujan Desa Banjaranyar dengan menggunakan Rancangan Petak Terbagi diulang tiga kali. Petak utama terdiri atas tanpa rumput, rumput gajah dan sereh serta anak petak terdiri atas vartietas Situ Patenggang, Kalimutu, Danau Gaung, Jatiluhur dan Cisokan. Pada kondisi kadar air tanah rendah (

Kemampuan Predasi Tungau Predator Amblyseius sp. Resisten Temperatur terhadap Tetranychus urticae

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 13, No 1 (2013): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

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Abstract

he predation ability of temperature resistant  Amblyseius sp. to Tetranychus urticae. Global warming and climate changes have caused great mortality of the predatory mites Amblyseius sp. that disrupts the natural control of Tetranychus urticae. In contrast, the low humidity and high temperature led to an increase in the population of T. urticae. The purposes of this study were to determine the effect of temperature on population of the predatory mites Amblyseius sp. and to determine the predation ability of temperature resistant Amblyseius sp. on T. urticae. The selection of Amblyseius sp. was conducted at temperatures of 15, 20, 25, 30 and 35 0C. The parental predatory mite Amblyseius sp., and subsequent descendants were exposed to the temperature range until the values of the LT50 fiducial limits (FL) of a certain generation did not overlap with that of the previous one. The effectiveness of Amblyseius sp. predation ability was studied using an experimental method  i.e. completely randomized design with four treatments and ten  replications . For this purpose, each stage of T. urticae, i.e. egg, larvae, nymph and adult was set as treatment and  was given to any type of temperature resistant predatory mite Amblyseius sp. The results showed that by using the temperature gradient, we managed to select temperature-resistant  individuals from their  population.  These individuals formed a population that was resistant to temperature of up to 33.3oC without losing their predatory capacity, especially on the egg stage of T.urticae.

Kajian Status Resistensi Tungau Hama Brevipapalpus phoenicis dan Tungau Predator Ambleyseius deleoni sebagai Dasar Evaluasi Aplikasi Pestisida

Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 2 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

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Abstract

The Increasing demand of tea product this decade causes the tea become prospective commodity. In other hand, free residual of pesticide in the tea culture could inhibit the rise of this demand. Therefore the evaluation of pesticide application policy in the field should be conducted, especially in term of the effect of the residual of pesticide on the resistance status of the mite. The research had been done using survey and experimental methods. The aim of the research was to decide the resistance status of the pest mite of tea leaf Brevipalpus phoenicis and it main predatory mite Ambleyseius deleoni on the application of three kind of pesticides (herbicide, fungicide and acaricide), and its effect on predator-prey feeding link. The result shows that both B. Phoenicis and A. deleoni are still resistant to herbicide (Round Up 486 AS) and fungicide (Kocide 77WP), but they are susceptible on acaricide (Kelthane 200EC). Also pesticide application has no effect significantly on predator-prey link (predation level). The conclusion is pest mite B. phoenicis is resistant on fungicide (Kocide 77WP) and Herbicide (Round Up 486 AS) but it is not resistance on Acaricide (Kelthane 200EC). Application of pesticides has no effect significantly on predator-prey link (predation level), so predatory mite A. deleoni is still effective in biological control for its prey.

KUANTITAS ANAKAN KULTUR SEMUT RANGRANG, Oecophylla smaragdina, SECARA ARTIFISIAL DENGAN MENGGUNAKAN BEBERAPA JENIS PAKAN BERBEDA

Scripta Biologica Vol 4, No 1 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

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Abstract

Oecophylla smaragdina or weaver ants is social insect that has an important role in the ecosystem. One of its main function is as a biological control agent in agriculture. The use of weaver ants in an effort to develop a biocontrol continues and increases, this has caused the significant decrease of the natural population of O. smaragdina. Therefore, the weaver ants rearing is needed to maintain its existence in natural habitat without excessive exploitation. The purpose of this study were to determine the effect of different types of feed i.e. snails, earthworms, and okara (tofu by-product) in the production of weaver ants kroto; and to determine the different of treatments of feeds provided to the production quantity of weaver ants kroto. The experimental method used in this study with a completely randomized design. Treatment was given by different protein sources feeding i.e. snails (Pomacea canaliculata), earthworm (Lumbricus rubellus), and okara. Five replicates were appliead for each treatment. Earthworms fed ants produced highest number of kroto with total of 1,030 individuals and weight 87.4 gram in total. Snails fed ants produced 866 individuals and weight 73.1 gram. Okara fed ants produced 543 individuals and weight 45.9 gram.