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Omkar,
- Searching and Feeding Efficiency of a Ladybeetle, Coccinella transversalis Fabricius on Aphid, Aphis gossypii Glover
Abstract Views :233 |
PDF Views:91
Authors
Omkar
1,
Barish E. James
1
Affiliations
1 Department of Zoology, University of Lucknow Lucknow 226007, Uttar Pradesh, IN
1 Department of Zoology, University of Lucknow Lucknow 226007, Uttar Pradesh, IN
Source
Journal of Biological Control, Vol 17, No 2 (2003), Pagination: 107-112Abstract
Searching and feeding efficiency of a predaceous ladybird beetle, Coccinella transversalis Fabricius was investigated for brinjal aphid, Aphis gossypii Glover at varying predator and prey densities. Rate of prey consumption per predator decreased with increase in the number of predators, due to mutual interference (0.90) amongst the larvae. Searching efficiency (area of discovery) of fourth instar larvae decreased from 0.1846 to 0.0779 when one, two, four and eight predators were exposed to a constant prey density (200). Prey consumption by a single larva increased with increase in prey densities but the percent prey consumption decreased. Maximum percent prey consumption was noticed at the lowest prey density (50) and minimum at highest prey density (800). Searching efficiency of a fourth instar larva decreased from 1.7263 to 0.4727 with increase of prey density from 50 to 800 individuals of A. gossypii. The predator-prey ratio of 1:50 may be considered optimal for the augmentative release of C. transversalis for the biocontrol of A. gossypii.Keywords
Aphis Gossypii, Coccinella transversalis, Coccinellidae, Coleoptera, Predation, Searching.Full Text
- Comparative Prey Consumption and Searching Efficiency of Coccinella septempunctata Linnaeus and Coccinella transversalis Fabricius on Different Aphid Species
Abstract Views :260 |
PDF Views:126
Authors
Omkar
1,
Shefali Srivastava
1
Affiliations
1 Department of Zoology, University of Lucknow Lucknow 226007, Uttar Pradesh, IN
1 Department of Zoology, University of Lucknow Lucknow 226007, Uttar Pradesh, IN
Source
Journal of Biological Control, Vol 17, No 1 (2003), Pagination: 35-41Abstract
The comparative prey consumption and searching efficiency of fourth instar gruhs of Coccinella septempunctata Linnaeus and Coccinella transversalis Fabricius against three aphid species, viz. Rhopalosiphum maidis (Fitch), Myzus persicae (Sulzer) and Macrosiphmn rosae (Linnaeus) were evaluated to assess the efficiency of these predators in aphid biocontroI. The larvae of C. septempunctata consumed maximum number (245.60±1.92) of M. persicae at prey density of 800 and minimum (18.80±0.88) of R. maidis at prey density of 25 in 24 hours. Fourth instar of C. transversalis consumed maximum number (224.80±1.93) of M. persicae at the prey density of 800 and minimum number (17.40±0.58) of M. rosae at the prey density of 25 in 24 hours. Area of discovery of C. septempunctata and C. transversalis was maximum at the lowest predator (1) and prey-densities (25) of M. persicae. The same was minimum in the case of C. septempunctata and C. transversalis at highest predator (8) and prey- densities (800) of R. maidis and M. rosae, respectively. Prey consumption hy hoth coccinellids increased but their searching efficiency decreased with increase of either prey or predator density. The predatory potential and searching efficiency of C. septempunctata was relatively higher than that of C. transversalis.Keywords
Aphids, Coccinella septempunctata, Coccinella transversalis, Functional Response, Numerical Response, Searching Efficiency.Full Text
- Food Resource Exploitation in Ladybirds:Consequences of Prey Species and Size
Abstract Views :220 |
PDF Views:85
Authors
Affiliations
1 Ladybird Research Laboratory, Department of Zoology, University of Lucknow, Lucknow 226 007, IN
1 Ladybird Research Laboratory, Department of Zoology, University of Lucknow, Lucknow 226 007, IN
Source
Current Science, Vol 110, No 7 (2016), Pagination: 1343-1349Abstract
In the present study, preference between larger and smaller instars of Acyrthosiphon pisum and Aphis craccivora by small and large female variants of ladybirds Menochilus sexmaculatus and Propylea dissecta has been investigated. Results reveal that both ladybird species consumed smaller prey, A. craccivora over larger prey, A. pisum when kept individually and/or in combination. Although small and large female variants of both ladybird species consumed smaller and larger instars of A. craccivora respectively, they preferred smaller instars of A. pisum. Similar results were also recorded within combinations. Thus, food resource exploitation in both ladybirds is due to both prey species and size.Keywords
Aphids, Food Resource Exploitation, Ladybirds, Prey Species and Size Resource Polymorphism.Full Text
- Ladybird, Menochilus Sexmaculatus (Fabricius) Can Survive o Oophagy but with Altered Fitness than Aphidophagy
Abstract Views :313 |
PDF Views:83
Authors
Affiliations
1 Ladybird Research Laboratory, Department of Zoology, University of Lucknow, Lucknow 226 007, IN
1 Ladybird Research Laboratory, Department of Zoology, University of Lucknow, Lucknow 226 007, IN
Source
Current Science, Vol 118, No 10 (2020), Pagination: 1602-1608Abstract
Egg consumption is common among insects, including ladybirds. The consumed eggs may be conspecific or heterospecific. Egg consumption eliminates potential competitors and provides additional nutrients for development and reproduction. In ladybirds, the incidence of cannibalism and intraguild predation has been proven as alternative tactics for the sustenance of life under prey-scarce condition. The consumption of conspecific eggs is known as cannibalism. Thus, in this study we have evaluated the effect of diets, viz. conspecific and heterospecific eggs along with aphids on egg consumption, developmental and reproductive attributes of a ladybird beetle, Menochilus sexmaculatus (Fabricius) (Coleoptera: Coccinellidae). We found that all the immature stages and adults prefer and consumed more conspecific eggs than heterospecific eggs possibly owing to low toxicity. Fourth instars and adult females consumed higher number of conspecific (82.15 ±4.94 and 85.04 ±0.05 respectively) and heterospecific eggs (56.61 ±0.44 and 60 ±0.48 respectively) than other life stages. Further the life stages developed faster on aphids followed by conspecific and heterospecific eggs. Besides aphids, overall maximum number of eggs was laid on conspecific eggs (84.00 ±1.92) followed by heterospecific eggs (67.70 ± 1.07). However, reverse trend was observed for per cent egg viability. Thus, with scarcity of primary prey (aphid), ladybirds consume and reproduce on conspecific/heterospecific eggs as alternative diets.Keywords
Aphidophagy, Egg Consumption, Ladybirds, Oophagy.Full Text
References
- Kudo, S. I. and Nakahira, T., Effects of trophic-eggs on offspring performance and rivalry in a sub-social bug. Oikos, 2004, 107, 28– 35.
- Järnegren, J., Tobias, C. R., Macko, S. A. and Young, C. M., Egg predation fuels unique species association at deep-sea hydrocarbon seeps. Biol. Bull., 2005, 209(2), 87–93.
- Ochi, H., Sato, Y. and Yanagisawa, Y., Obligate feeding of cichlid eggs by Caecomastacembelus zebratusin Lake Tanganyika. J. Fish Biol., 1999, 54, 450–459.
- Denoël, M. and Andreone, F., Trophic habits and aquatic micro-habitat use in gilled immature, paedomorphic and metamorphic Alpine newts (Triturus alpestris apuanus) in a pond in central Italy. Belg. J. Zool., 2003, 133(2), 95–102.
- De Queiroz, A. and Rodriguez-Robles, J. A., Historical contingency and animal diets: The origin of egg eating in snakes. Am. Naturalist, 2006, 167, 682–692.
- Burger, J., Territory size differencesin relation to reproductive stage and type of intruder in herring gulls (Larus argentatus). Auk, 1980, 97(4), 733–741.
- Estrada, A., Rivera, A. and Coates-Estrada, R., Predation of artificial nests in a fragmented landscape in the tropical region of Los Tuxtlas, Mexico. Biol. Conserv., 2002, 106, 199–209.
- Omkar, Pervez, A. and Gupta, A. K., Why do neonates of aphido-phagous ladybird beetles preferentially consume conspecific eggs in presence of aphids? Biocontrol. Sci. Technol., 2006, 16(3), 233–243.
- Singh, S., Mishra, G. and Omkar, Oviposition in aphidophagous ladybirds: effect of prey availability and conspecific egg presence. Int. J. Trop. Insect Sci., 2019, 39, 107–104.
- Schausberger, P., Inter and intraspecific predation on immatures by adult females in Euseius finlandicus, Typhlodromus pyriand Kampimo dromus aberrans(Acari: Phytoseiidae). Exp. Appl. Acarol., 1997, 21(3), 131–150.
- Kaplan, R. H. and Sherman, P. W., Intraspecific oophagy in California newts. J. Herpetol., 1980, 14(2), 183–185.
- Elgar, M. A. and Crespi, B. J.,Cannibalism: Ecology and Evolution among Diverse Taxa, Oxford University Press, Oxford, UK, 1992.
- Schausberger, P., Cannibalism amongphytoseiid mites: a review. Exp. Appl. Acarol., 2003, 29(3–4), 173–191.
- Pfennig, D. W., Ho, S. G. and Hoffman, E. A., Pathogen transmission as a selective force against cannibalism. Anim. Behav., 1998, 55(5), 1255–1261.
- Evans, E. W., Multitrophic interactions among plants, aphids, alternate prey and shared natural enemies – a review. Eur. J. Entomol., 2008, 105, 369–380.
- Dixon, A. F. G., Insect Predator – Prey Dynamics, Ladybird Beetles and Biological Control, Cambridge University Press, Cambridge, 2000.
- Snyder, W. E., Joseph, S. B., Preziosi, R. F. and Moore, A. J., Nutritional benefits of cannibalism for the lady beetle Harmonia axyridis(Coleoptera: Coccinellidae) when prey quality is poor. Environ. Entomol., 2000, 29, 1173–1179.
- Yadav, T., Omkar and Mishra, G., Conspecific egg quality and distribution pattern do not affect life history traits of ladybird, Menochilus sexmaculatus. Bull. Insectol., 2019, 72, 125–133.
- Dixon, A. F. G. and Kindlmann, P., Cannibalism, optimal egg size and vulnerable developmental stages in insect predators. Eur. J. Environ. Sci., 2012, 2, 84–88.
- Hemptinne, J. L., Magro, A., Saladin, C. and Dixon, A. F. G., Role of intraguild predation in aphidophagous guilds. J. Appl. Entomol., 2011, 136(3), 161–170.
- Hodek, I., Van Emden, H. F. and Honek, A., Ecology and behavior of the ladybird beetles (Coccinellidae). John Wiley & Sons, West Sussex, 2012.
- Hemptinne, J. L., Dixon, A. F. G. and Coffin, J., Attack strategy of ladybird beetles (Coccinellidae): factors shaping their numerical response. Oecologia, 1992, 90, 238–245.
- Hodek, I. and Honek, A., Ecology of Coccinellidae, Kluwer Academic Publishers, Dordrecht, The Netherlands, 1996.
- Dixon, A. F. G. and Agarwala, B. K., Triangular fecundity function and ageing in ladybird beetles. Ecol. Entomol., 2002, 27, 433– 440.
- Schellhorn, N. A. and Andow, D.A., Mortality of coccinellids (Coleoptera: Coccinellidae) larvae and pupae when prey become scarce. Environ. Entomol., 1999, 28, 1092–1100.
- Hemptinne, J. L., Dixon, A. F. G. and Gauthier, C., Nutritive cost of intraguild predation on eggs of Coccinella septempunctataand Adalia bipunctata(Coleoptera: Coccinellidae). Eur. J. Entomol., 2000, 97, 559–562.
- Abdelwahab, A. H., Michaud, J. P., Bayoumy, M. H., Awadalla, S. S. and El-Gendy, M., No nutritional benefits of egg cannibalism for Coleomegilla maculata(Coleoptera: Coccinellidae) on a high-quality diet. Bull. Entomol. Res., 2017, 108(3), 344–350.
- Nakamura, K. and Ohgushi, T., Studies on the population dynamics of a thistle-feeding lady beetle, Henosepilachna pustulosa (Kono) in a cool temperate climax forest II. Life tables, key-factor analysis, and detection of regulatory mechanisms. Res. Popul. Biol., 1981, 23, 210–231.
- Hemptinne, J. L., Lognay, G., Gauthier, C. and Dixon, A. F. G., Role of surface chemical signals in egg cannibalism and intraguild predation in ladybirds (Coleoptera: Coccinellidae). Chemoecology, 2000, 10, 123–128.
- Ware, R., Yguel, B. and Majerus, M., Effects of competition, cannibalism and intraguild predation on larval development of the European coccinellid Adalia bipunctataand the invasive species Harmonia axyridis. Ecol. Entomol., 2009, 34, 12–19.
- Cottrell, T. E., Suitability of exotic and native lady beetle eggs (Coleoptera: Coccinellidae) for development of lady beetle larvae. Biol. Control, 2004, 31, 362–371.
- Koide, T., Observations on the feeding habit of the larva of Coccinella septempunctata bruckiiMulsant: the feeding behaviour and number of prey fed under different temperatures. Kontyu, 1962, 30, 236–241.
- Kajita, Y., Obrycki, J. J., Slogett, J. J. and Haynes, K. F., Intraspecific alkaloid variation in ladybird eggs and its effects on conand heterospecific intraguild predators. Oecologia, 2010, 163, 313–322.
- Kumar, B., Mishra, G. and Omkar, Functional response and predatory interactions in conspecific and heterospecific combinations of two congeneric species (Coleoptera: Coccinellidae). Eur. J. Entomol., 2014, 111(2), 257–265.
- Omkar, Suitability of different foods for a generalist ladybird, Micraspis discolour(Coleoptera: Coccinellidae). Int. J. Trop. Insect Sci., 2006, 26, 35–40.
- Dimetry, N. Z., The consequences of egg cannibalism in Adalia bipunctata(Coleoptera: Coccinellidae). Entomophaga, 1974,19(4), 445–451.
- Osawa, N., Sibling cannibalism in the lady beetle Harmonia axyridis: fitness consequences for mother and offspring. Res. Popul. Ecol., 1992, 34, 45–55.
- Perry, J. C., The behavioural ecology of trophic egg laying, MSc thesis, Department of Biological Sciences, Simon Fraser University, 2004.
- Osawa, N., Ecology of Harmonia axyridisin natural habitats within its native range. BioControl, 2011, 56, 613–621.