The leafeating caterpillar opisina arenosella walker is the most important lepidopteran pest of coconut palm in india and sri lanka. The functional response of the parasitoid can determine potential of a species to act as a biocontrol agent. In sri lanka control of this pest has been attemptedby mass breeding and releasing of egg. Biocontrol potential and its exploitation in coconut pest. Discrete generation cycles in the tropical moth opisina. It is an outbreak pest and in severe cases the whole affected plan. Oecophoridae infested leaves of coconut palms article pdf.
Joseph, head of the department of zoology for the facilities provided thanks are also due to dr. The periodicity of adult emergence, calling, courtship, mating and oviposition behaviour of opisina arenosella walker lepidoptera. Development of microsatellite markers and detection of. Analysis of records of population outbreaks throughout the country from 1965 to 1985 revealed cycles in the. Neuropeptides vol 37, issue 3, pages 3200 june 2003. Results and discussion experiment 1 the average number of live caterpillars and pupae of 0. Effect of monocrotophos on the leaf eating caterpillar. In this study, an orthogonal array of artificial diets with 11 factors at 3 levels was deployed for both 2nd4th and 5th6th instar larvae of o.
Coconut black headed caterpillar opisina arenosella walker lepidoptera. An opisina arenosella in nahilalakip ha genus nga opisina, ngan familia nga oecophoridae. Pdf biological control of opisina arenosella walker lepidoptera. A brain peptide stimulates release of amylase from the. Investigations carried out on the parasitehyperparasite complex of the coconut pest opisina arenosella walker indicate that the hyperparasites considerably reduce the population of the parasites and thus lower the efficiency of the latter as biological control agents.
Insect populations with discrete generation cycles dgcs, have been rarely encountered in the tropics. Opisina arenosella walker is a defoliating pest of coconut in sri lanka. Periodicity of adult emergence and sexual behaviour of coconut. The coconut caterpillar, opisina arenosella walker xylorictidae is a serious pest of coconut p3lms in sri lanka. A lab rearing technique was standardised for apanteles taragamae viereck hymenoptera. Low feeding damage by this pest on oil palm elaeis guineensis was also recorded. Pdf volatile organic compounds in healthy and opisina. Opisina is a monotypic moth in the family xyloryctidae described by francis walker in 1864. Blackheaded caterpillar, opisina arenosella walker lepidoptera. All life stages of this species were reared at 20, 23, 26, 29, 32 and 35 c to understand the effect of temperature on the biology of o. Eggs were laid readily on half to full grown larvae and incubation, larval and pupal periods were 2.
Pdf biological control of opisina arenosella walker. Download fulltext pdf download fulltext pdf volatile organic compounds in healthy and opisina arenosella walker lepidoptera. Status and management of three major insect pests of coconut in the tropics and subtropics cork a, hall dr 1998 application of pheromones for crop pest management in the indian subcontinent. A first attempt was made to understand its population dynamics.
Bracon hebetor say shows high fecundity and natural rate of increase which makes it a promising enemy against corcyra cephalonica, a very common stored grain pest. Biological suppression of coconut black headed caterpillar. Millions of people depend on this crop by employed in various coconutbased industries like coconut oil, dry coconut powder, tender coconut, coir, coconut. Testing bessa remota dip tachinidae against opisina. General information about opisina arenosella nepase. Oecophoridae is attacked by several parasitoids and predators, some of which in turn are attacked by certain hyperparasites. It is considered a pest to these countries, as they infest coconut palm trees, causing considerable damage to the trees, and reducing the plants yield significantly.
Myanmar, the blackheaded caterpillar pest of coconut, opisina arenosella walker nephantis serinopameyrick, has. The leafeating caterpillar, opisina arenosella walker, is the most destructive pest of coconut palm in india and southeast asia. Biocontrol potential and its exploitation in coconut pest management. Leafeating caterpillar opisina arenosellainduced yield. Direct and indirect influences of intercrops on the coconut defoliator opisina arenosella. On some hyperparasites of opisina arenosella 31 acknowledgements the authors are thankful to prof. Download fulltext pdf download fulltext pdf direct and indirect influences of intercrops on the coconut defoliator opisina arenosella article pdf available in journal of pest science 9. The knowledge on biology and behaviour are prerequisites for semiochemical based pest management. Direct and indirect influences of intercrops on the. Rhynchophorus ferrugineus olivier, oryctes rhinoceros l, opisina arenosella walker, aceria guerreronis keifer, latoia lepida cramer and aspidiotus destructor signoret are causing maximum damage in coconut which ultimately affect the true potential of the crop. Pdf biological suppression of coconut black headed. Opisina arenosella has been an outbreak pest of coconut trees in southern china since 20. This is the talk page for discussing improvements to the opisina arenosella article.
Effect of four commercial preparations of bacillus. Leucokinins are a group of structurally related neuropeptides stimulating gut motility and fluid secretion by malpighian tubule in insects. The 3rd joint meeting of the summer neuropeptide conference th annual meeting and the european neuropeptide club th annual meeting montauk, ny, june 812, 2003. It is found in india, sri lanka, bangladesh and myanmar. Current science is a fortnightly journal published since 1932 by the current science association, bangalore india in collaboration with the indian academy of sciences. Coconut palm cocos nucifera infestation by opisina arenosella lepidoptera. Opisina arenosella family cryptophasidae order lepidoptera an adult is a greyishwhite moth measuring 1015 mm long and 2025 mm in wingspan across outstretched wings. Ang opisina arenosella sakop sa kahenera nga opisina sa kabanay nga oecophoridae. Whether you work in a big company or manage your own business at home, you will find more than 1,000 items in our store to cater to your needs. The coconut black headed caterpillar opisina arenosella, is a species of moth found in. The brain factor stimulating enzyme release may be a peptide as it is heat stable and susceptible to treatment with proteolytic enzymes. In lepidoptera sexual, oviposition and adult emergence behaviour follows a specific periodicity and is limited to either the day or the night.
Chalcididae, a pupal parasitoid of opisina arenosella, the coconut caterpillar, cocos. Status and management of three major insect pests of. Opisina arenosella nepaseoverview eppo global database. Competitive interactions between goniozus nephantidis and bracon.
Microsatellite markers are especially useful codominant markers that have been used in a wide range of studies to elucidate the population structure and dynamics of a range of organisms, including agriculturally beneficial insects such as parasitic wasps. An opisina arenosella in uska species han lepidoptera nga ginhulagway ni walker hadton 1864. Inhibition of digestive enzyme release by neuropeptides in. The coconut black headed caterpillar opisina arenosella, is a species of moth found in multiple regions throughout east asian countries including bangladesh, india, sri lanka, mayanmar, as well as indonesia. Host performance of trichogramma species on opisina. Molecular genetic markers reveal differences between genotypes according to the presence of alleles the same or different at target loci. Among the few known species, spatially segregated coastal populations of opisina arenosella, the coconut caterpillar, have been shown to follow dgcs during outbreaks in sri lanka. Over 10 million scientific documents at your fingertips. Pdf direct and indirect influences of intercrops on the.
Palmaceae is an important crop and widely cultivated in the tropical and subtropical regions of the world. The other hosts for this pest are palmyrah borassus flabellifer, talipot corypha umbraculifera and wild date phaoenix sylvestris. Assessment of crop loss is essential for a realistic planning for research and developmental policies. Host performance of trichogramma species on opisina arenosella. Biological control of the coconut caterpillar opisina arenosella.
Arthropod pests, coconut, lifehistory, damage, management. To develop efficient control methods for this invasive pest, adequate rearing protocols are desirable. Bacillus thuringiensis was studied in the laboratory for the control of opisina arenosella walker. The biology of this hyperparasite was studied in the laboratory. Oecophoridae is a multivoltine tropical moth having discrete. Effect of host density on life table statistics of bracon. The moth is straw to ash gray in color, mediumsized with uniform faded whitish top wings. The top brands of office supplies have trusted us to make available their products at your fingertips. Design and selection of an artificial diet for the coconut. If you think this addon violates mozillas addon policies or has security or privacy issues, please report these issues to mozilla using this form please dont use this form to report bugs or request addon features. On some hyperparasites of opisina arenosella the black. Five candidate species for biocontrol of opisina arenosella walker, a destructive pest of palm trees, were evaluated. This is not a forum for general discussion of the articles subject.
Coconut is one of the major crops of commercial importance among the palms. Climatic parameters are known to be important in regulating generation cycles in insect populations. Respiration a process of interchange of gases between environment and the blood or cellular tissues of organisms. Its only species, opisina arenosella, the coconut blackheaded caterpillar, was described by the same author in the same year. During other periods, pests andor parasitoids could be maintained on intercrops that are commonly grown. Effect of monocrotophos on opisina arenosella introduced the samples were assayed at approximately weekly intervals upto 178 days after injection. Direct and indirect influences of intercrops on the coconut. Over time, the site is expected to grow to describe every species of ant known. This effect of the brain extract was both time and dose dependent. Velu coconut research institute, lunuwila, sri lanka abstract the effectiveness of four commercial preparations of the bacterium. To compare host performance, 5 trichogramma species were allowed to parasitize o. For studying effect of neuropeptides on digestive enzyme release, empty midgut tubes of larvae of opisina arenosella ligated at both ends with hair were incubated with leucokinins lk iviii, lk analogues and leucopyrokinin lpk in a bioassay apparatus. Pagka karon wala pay siak nga nalista ubos niini niya. It causes heavy damage to coconut leaves by eating the parenchymatous tissue on the ventral surface.
Brain extracts from 3 to 4 day old final eighth instar larvae of opisina arenosella lepidoptera stimulate amylase release from midgut preparations maintained in vitro. Life table analysis under constant temperature for opisina. Oecophoridae in the indian subcontinent may occur in november to may each year in the same or adjoining areas of plantations. Braconidae, the early larval parasitoid of the coconut leafeating caterpillar, opisina arenosella walker on the alternate host corcyra cephalonica stainton lepidoptera. Population dynamics of the coconut caterpillar, opisina. Pediobius imbreus walker, a hyperparasite of opisina arenosella, is distributed throughout kerala. Insect pests of economic significance affecting major crops of the countries in asia and the pacific region. The journal covers all branches of pureapplied science and technology such as physics, chemistry, life sciences, medicine, earth sciences, engineering and technology. Opisina arenosella is attacked by a number of species of indigenous natural enemies, including parasitoids. Periodicity of adult emergence and sexual behaviour of. Total developmental time egg to adult generally was longest. Introduction coconut is one of the oldest crops grown in india and presently covers 1.
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