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Anto Claver, M.
- Impact of Augmentative Release of Rhynocoris kumarii Ambrose & Livingstone (Heteroptera: Reduviidae) on Dysdercus cingulatus (Fabricius) (Hemiptera: Pyrrhocoridae) Population and Damage on Cotton
Abstract Views :246 |
PDF Views:134
Authors
Affiliations
1 Entomology Research Unit, St. Xavier's College Palayankottai 627 002, Tamil Nadu, IN
1 Entomology Research Unit, St. Xavier's College Palayankottai 627 002, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 15, No 2 (2001), Pagination: 119-125Abstract
An attempt was made to augment Rhynocoris kumarii Ambrose and Livingstone in a cotton field to suppress Dysdercus cingulatus (Fabricius). The first release of adult stage of R. kumarii did not affect the number of adult D. cingulatus in the released and control field plots. The second release of R. kumarii in egg stage also did not significantly affect the number of first instar D. cingulatus. The third release of R. kumarii in III instar did not affect the number of II and III nymphal instars of D. cingulatus. However, after the fourth release of V instar stage of R. kumarii there was significantly fewer IV, V and adult D. cingulatus in predator released plots compared to non-released (control) plots. Plant damage by D. cingulatus was less severe in predator released plots than in non-released control plots. There was no difference in the number of predatory arthropods, such as Menocholis sp., Orius sp., Geocoris sp., Cantheconidia sp., Rhynocoris fusciepes, Mantis sp. and spiders found in released and non-released field plots. The percentage of good quality cotton and yield of seed-cotton was greater in released plots tllan in non-released control plots.Keywords
Augmentative Release, Biocontrol Potential, Dysdercus cingulatus, Rhynocoris Kumarii.Full Text
- Size Preference and Functional Response of the Reduviid Predator Rhynocoris marginatus Fabricius (Heteroptera:Reduviidae) to its Prey Spodoptera litura (Fabricius) (Lepidoptera:Noctuidae)
Abstract Views :242 |
PDF Views:143
Authors
Affiliations
1 Entomology Research Unit, St. Xavier's College, Palayankottai 627 002, Tamil Nadu, IN
1 Entomology Research Unit, St. Xavier's College, Palayankottai 627 002, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 10, No 1&2 (1996), Pagination: 29-37Abstract
Laboratory and field cage experiments were carried out to assess the prey and size preference of the reduviid predator Rhynocoris marginatus Fabricius. It preferred Spodoptera litura (Fabricius) over Euproctis mollifera Walker and Mylabris pustulata Thunberg. The relationship between preference for different sizes of S. litura and the predator, was directly proportional. Functional response of adult female R. marginatus to its most preferred prey size of S. litura revealed that the predator responded positively to the changing abundance of prey and exhibited Holling's second model of functional response. The possibilities of utilising R. marginatus to control S. litura in cotton ecosystem is discussed.
Keywords
Cotton Ecosystem, Euproctis mollifera, Functional Response, Mylabris pustulata, Rhynocoris marginatus, Size Preference, Spodoptera litura.Full Text
- Functional Response of Rhynocoris fuscipes Fabricius (Heteroptera:Reduviidae) to Riptortus clavatus Thunberg (Heteroptera:Alydidae)
Abstract Views :232 |
PDF Views:113
Authors
Affiliations
1 Entomology Research Unit, St. Xavier's College, Palayankottai-627002, Tamil Nadu, IN
1 Entomology Research Unit, St. Xavier's College, Palayankottai-627002, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 9, No 2 (1995), Pagination: 74-77Abstract
Functional response of the reduviid predator, Rhynocoris fuscipes Fabricius to the bean bug Riptortus clavatus Thunberg was studied in pigeonpea branch terminals using field cages. Rhynocoris fuscipes positively responded to the changing abundance of prey andexhiblted Holling's second model of functional response. The searching capacity of R. fuscipes increased with increasing prey density. The considerable number of prey consumed by the predator per day at higher prey density than at lower density reflected the predator's biocontrol potential.Keywords
Functional Response, Handling Time, Prey Density, Rhynocoris fuscipes, Riptortus clavatus, Searching Time.Full Text
- Food Requirement of Rhynocoris kumarii Ambrose & Livingstone (Heteroptera, Reduviidae)
Abstract Views :223 |
PDF Views:108
Authors
Affiliations
1 Entomology Research Unit, St. Xavier's College (Autonomous), Palayankottai - 627 002, IN
1 Entomology Research Unit, St. Xavier's College (Autonomous), Palayankottai - 627 002, IN
Source
Journal of Biological Control, Vol 9, No 1 (1995), Pagination: 47-50Abstract
Rhynocoris kumarii Ambrose & Living stone was reported as a potential predator of various insects such as Achaea janata Linnaeus, Anomis flava Fabricius, Calacoris angustatus Lethierry, Corcyra cephalonica Stainton, Dysdercus cingulatus Fabricius, Earias insulana Biosdual, Earias vitella Fabricius, Ergolis merione Costa, Euproctis fraterna Moore, Euproctis scintillans Walker, Eupterote mollifera Walker, Helicoverpa armigera Hubner, Tribolium castaneum (Herbst), Mylabris pustulata Thunberg, Oxycarenus hyalinipennis Costa, Papilio demoleus Linnaeus, Patanga succinota (Linnaeus), Pectinophora gossypiella Saunders and Spodoptera litura Fabricius (Ambrose, 1985, 1988, 1995). It inhabits concealed micro habitats especially underneath the stones (Ambrose and Livingstone, 1987).Keywords
R. kumarii, D. venusta, Reduviid Predator, Food Requirement, Predatory Value, Conversion Ratio.Full Text