Nonlinear models for describing development and fecundity of the pseudococcid predators Nephus includens and Nephus bisignatus


Published: Jan 8, 2012
Keywords:
degree- days development threshold model temperature
Dimitrios Ch. Kontodimas
Abstract

Among several mathematical models used to describe the development or the fecundity of insects the equations of Enkegaard, Analytis, Bieri 1 and Bieri 2 could describe both biological features. In the current study these equations used to describe the development and fecundity of two pseudococcid predators [Nephus includens (Kirsch) and Nephus bisignatus (Boheman) (Coleoptera: Coccinellidae)] preying on Planococcus citri (Risso) (Hemiptera: Pseudococcidae) at constant temperatures (15oC - 35oC). All models have goodness of fit to data especially for development [R2 adj, RSS and AIC ranged 0.9908-0.9996, 0.0019-89.1752 (x10-4), and (-75.43) – (-31.07) respectively]. Optimum temperature (Topt) and upper threshold (Tmax) were calculated accurately by all models (Topt ranged 32.6-34.0oC for N. includens and 30.0-30.6oC for N. bisignatus and Tmax ranged 35.0-38.8oC for N. includens and 33.1-36.0oC for N. bisignatus, respectively). Lower temperature threshold (Tmin) was calculated accurately by Bieri-1 model (11.0 and 10.0oC for N. includens and N. bisignatus respectively) whereas Analytis model underestimated it (8.0 and 4.9oC). As far as fecundity is concerned the respective values were better fitted near the optimum temperature (25oC) [R2 adj, RSS and AIC ranged 0.8246-0.9704, 9.2729-24.0736 and (-246.82) – (-115.34) respectively]. Conclusively, from the tested models the Bieri-1 equation was proved as the most appropriate for the reason that could estimate correctly all the requested parameters concerning the development (Tmin, Topt, Tmax) as well as it could describe sufficiently the fecundity trend of the two predators.

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References
Akaike, H. 1974. A new look at the statistical model identification. IEEE Trans. Autom. Control AC. 19: 716–723.
Analytis, S, 1980. Obtaining of sub-models for modeling the entire life cycle of a pathogen. Z. Pflanzenker. Pflanzenschutz. 87: 371–382.
Arbab, A., D.C. Kontodimas and A. Sahragard. 2006. Estimating development of Aphis pomi De Geer (Homoptera: Aphididae) using linear and nonlinear models. Environ. Entomol. 35: 1208-15.
Arbab, A., Kontodimas D.C. and M.R. McNeill. 2008. Modeling Embryo Development of Sitona discoideus Gyllenhal (Coleoptera: Curculionidae) under Constant Temperature. Environ. Entomol. 37: 1381-88.
Argyriou, L.C., H.G. Stavraki and P.A. Mourikis. 1976. A list of recorded entomophagous insects of Greece. Benaki Phytopathological Institute, Kifissia, Greece. 73 p.
Bieri, M., J. Baumgärtner, G. Bianchi, V. Delucchi and R. von Arx. 1983. Development and fecundity of pea aphid (Acyrtosiphon pisum Harris) as affected by constant temperatures and pea varietes. Mitt. Schweiz. Entomol. Ges. 56: 163-171.
Bodenheimer, F.S. 1951. Citrus Entomology in the Middle East. Uitgeverij Dr. W. Junk Publishers, Graveenhage, The Hague, 663p.
Enkegaard, A. 1993. The poinsettia strain of the cotton whitefly, Bemisia tabaci (Hom.; Aleyrodidae), biological and demographic parameters on poinsettia (Euphorbia pulcherrima) in relation to temperature. Bull. Entomol. Res. 83: 535-546.
Francardi, V. and M. Covassi. 1992. Note bio-ecologishe sul Planococcus vovae (Nasonov) dannoso a Juniperus spp. In Toscana (Homoptera: Pseudococcidae). Redia 75: 1-20.
Fürsch, H. 1958. Die mitteleuropaischen Scymnini und deren Verbreitung mit besonderer Berucksichtigung Bayerns (Col. Cocc.). Nachr.bl. Bayer. Entomol. 7: 75-79; 83-91; 100-102.
Kontodimas, D.C. 1997. First record of the predatory insect Nephus bisignatus (Boheman) (Coleoptera: Coccinellidae) in Greece. Ann. Inst. Phytopathol. 18: 61-63.
Kontodimas, D.C., P.A. Eliopoulos, G.J. Stathas and L.P. Economou. 2004. Comparative temperature-dependent development of Nephus includens (Kirsch) and Nephus bisignatus (Boheman) (Coleoptera: Coccinellidae) preying on Planococcus citri (Risso) (Homoptera: Pseudo-coccidae): Evaluation of a linear and various non-linear models using specific criteria. Environ. Entomol. 33: 1–11.
Kontodimas, D.C., P.G. Milonas, G.J. Stathas, L.P. Economou and N.G. Kavallieratos. 2007. Life table parameters of the pseudococcid predators Nephus includens and Nephus bisignatus (Coleoptera: Coccinellidae). Eur. J. Entomol. 104: 407-415.
Lactin, D.J., N.J. Holliday, D.L. Johnson and R. Craigen. 1995. Improved rate model of temperature–dependent development by arthropods. Environ. Entomol. 24: 68 – 75
Lanzoni, A., Accinelli, G., Bazzocchi, G.G. and Burgio, G., 2003. Biological traits and life tables of the exotic Harmonia axyridis compared with Hippodamia variegata, and Adalia bipunctata (Col.: Coccinellidae). J. Appl. Entomol. 128: 298-306.
Longo, S. and Benfatto. 1987. Coleotteri entomofagi presenti sugli agrumi in Italia. Inf. Fitopatol. 37: 21-30.
Magro, A., J. Araujo and J.L. Hemptinne. 1999. Coccinellids (Coleoptera: Coccinellidae) in citrus groves in Portugal: listing and analysis of geographical distribution. Bol. San. Veg. Plagas 25: 335-345.
Marquardt, D.V. 1963. An algorithm for least squares estimation of nonlinear parameters. J. Soc. Ind. Appl. Math. 11: 431-441.
Pope, R.D. 1973. The species of Scymnus (s.str.), Scymnus (Pullus) and Nephus (Col., Coccinellidae) occurring in the British Isles. Entomol. Mon. Mag. 109 (1304/6): 3-39.
Ranjbar Aghdam, H., Y. Fathipour and D.C. Kontodimas. 2011. Evaluation of nonlinear models to describe development and fertility of codling moth at constant temperatures. Entom. Hellenica 20: 3-16.
Roy, M., J. Brodeur and C. Cloutier. 2002. Relationship between temperature and developmental rate of Stethorus punctillum (Col.: Coccinellidae) and its prey Tetrany-chus mcdanieli (Acarina: Tetranychidae). Environ. Entomol. 31: 177–187.
SAS, Institute. 1989. JMP, a guide to statistical and data analysis, version 4.02. SAS Institute, Cary, NC.
Suzer, T., M. Aytas and R. Yumruktepe. 1992. Chemical experiment on citrus white fly (Dialeurodes citri), citrus red mite (Panonychus citri) and citrus rust mite (Phyllocoptruta oleivora Ashmead) in the Mediterranean region. Zirai Mucadele Arastirma Yilligi 22-23: 61-63.
Viggiani, G. 1974. Recherches sur les cochenilles des agrumes. IOBC/WPRS Bull. 3: 117-120.
Ydergaard, S., A. Enkergaard and H.F. Brǿdsgaard. 1997. The predatory mite Hypoaspis miles: temperature dependent life table characteristics on a diet of sciarid larvae, Bradysia paupera and B. tritici. Entomol. Exp. Appl. 85: 177 –187.
Zahiri, B., Y. Fathipour, M. Khanjani, S. Moharramipour and M.P. Zalucki. 2010. Preimaginal development response to constant temperatures in Hypera postica (Col.: Curculionidae): Picking the best model. Environ. Entomol. 39: 177-189.