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Bionomics of the Jute Yellow Mite, Polyphagotarsonemus Latus (banks) (acari: Tarsonemidae) in Jute (corchorus Olitorius L.) at Different Temperature-humidity

Md. Nazrul Islam
Principal Scientific Officer
Department of Entomology, Bangladesh Jute Research Institute, Dhaka

Khandakar Shariful Islam
Professor
Department of Entomology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Mahbuba Jahan
Professor
Department of Entomology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Md. Sohanur Rahman
Scientific Officer
Department of Entomology, Bangladesh Jute Research Institute, Dhaka

Abstract/ Executive Summary:

The jute yellow mite Polyphagotarsonemus latus constitutes one of the major pests of jute crop in Bangladesh. The objective of this work was to study the biology of the P.latus, to determine its temperature-humidity responces in jute (Corchorus olitorius L.) var. O-9897. Bionomics of jute yellow mite, Polyphagotarsonemus laenerationtus (Banks) were studied in the laboratory of Bangladesh Jute Research Institute during March 2013 to September 2013. The incubation period of yellow mite on the variety O-9897 was 1.95 days for female and 1.90 days for male; larval period of 1.00 days for female, 0.75 days for male ; pupal period of 0.70 days for female and 0.71 days for male; egg-adult period of 3.65 days for female and 3.44 days for male was highest in the 1st generation with 25.55±0.15oC and 56±1.47% relative humidity among three generations. pre-oviposition and oviposition period was o.65 days and 12.25 days. The highest longevity 13.45 days for female and 8.50 days for male. The daily mean of eggs were 2.20, 1.91 and 1.75 eggs in three successive generations. The number of eggs laid per female in her lifetime was 28.6, 24.8 and 12.2 eggs.

Keywords: Biology, Yellow mite, Jute.

Location: Bangladesh Jute Research Institute

Start Date: 00-03-2013

End Date: 00-09-2013

Program Area: Pest Management

Commodity: Mite, Jute

Objectives:

The objective of this work was to study the biology of the P.latus, to determine its temperature-humidity responces in jute (Corchorus olitorius L.) var. O-9897..

Methodology:

The duration of developmental stages of jute yellow mite, P. latus was studied on the leaf of jute variety O-9897 in the laboratory of the Department of Entomology, BJRI. Excised leaves were made with mite free fresh jute leaf. Each of the excised leaf pieces was square in appearance with 2cm² area. The leaf pieces were placed on cotton bed in petri dish (10cm diameter) facing under surface upward. Adult male and quiescent female pupa of P. latus was collected from stock culture. One male and one quiescent female pupa of P. latus were transferred to each piece of leaf for laying eggs. The leaf squares containing male and quiescent pupa were checked after two hours of their release. The mite individuals were removed if at least one egg was found. More than 30 eggs were collected on excised leaf square. One leaf square was maintained in each petri dish with a single egg. The petridishes were covered and excess moisture was removed. The petridishes containing leaf square with egg was placed on the shelf and checked every 6 hrs interval until the emergence of the larvae. Then, they were transferred individually to new excised leaf square by camel hair brush and observed at an interval of 6 hrs for determining the duration of the larval and pupal stages. The cotton beds were moistened with distilled water at each observation for moistening the excised leaves. Excised leaves were replaced by a new one every two days. After emergence, males were observed separately every 24 hr for determining their longevity. The females were allowed to mate with males obtained from the laboratory culture and observed at the same interval for studying pre-oviposition and oviposition period, longevity, fecundity, sex ratio and mating behavior. Males that died were replaced by fresh ones from the stock in excised leaf square. The room temperature and relative humidity were recorded at 9.00 am and 5.00 pm. Measurement of different stages of living and dead P. latus was recorded using an occular micrometer. The duration of different developmental stages was recorded for three generations and corresponding temperature and RH were noted.

Source of Information: Acta Scientifica Malaysia (ASM) 4(1) (2020) 27-33

Article Link (Online Journal): DOI: http://doi.org/10.26480/asm.01.2020.27.33

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Bionomics of jute yellow mite led to the generation of good number of scientific information. It can easily be controlled if its biology is known. Biological parameters of yellow mite such as development, fecundity, longevity was influenced by the environmental temperature and humidity as evident in the study of different generations. Variation of different life parameters in different generations probably varied in different environmental conditions. From the study, it can be concluded that this research work will be helpful to take effective measures for controlling jute yellow mite considering loss of production, cost effectiveness and environmental issues.

Knowledge Management: Journal