Evidence of intraspecific competition in early instars of the tomato moth, Tuta absoluta (Lepidoptera: Gelechiidae)

Authors

  • Patricia C. Pereyra Centro de Estudios ParasitolÛgicos y de Vectores (CEPAVE), La Plata, ARGENTINA

Abstract

The tomato moth (Tuta absoluta) is the major pest of this crop in many South American countries. Although larvae initiate new mines when they molt to the third instar, their density during the sedentary early instars may be critical for larval survival, developmental time and pupal weight. The objective of this study was to explore whether both the density of eggs and the leaf area influence intraspecific competition among early larval instars of this species in terms of larval survival, developmental time and weight of pupae. Increasing densities of eggs were negatively correlated with larval survival. The weight of pupae was positively related with fecundity and decreased with egg density. Increasing within-leaf egg density had a positive but weak effect on developmental time. About 39% of the variation in egg number was explained by leaf area, thus other factors might be influencing the selection sites for oviposition. Larval survival was negatively but weakly related with leaf area. This variable did not explain neither pupal weight nor developmental time.

References

AUERBACH, MJ; EF CONNOR & S MOPPER. 1995. Minor miners and major miners: population dynamics of leaf-mining insects. Pp. 83-110 en: N Capuccino & PW Price (eds). Population dynamics. New approaches and synthesis. 1ra edn. Academic Press.

AUERBACH, M & D SIMBERLOFF. 1989. Oviposition site preference and larval mortality in a leaf-mining moth. Ecol. Entomol. 14:131-140.

BAHAMONDES LA & AR MALLEA. 1969. Biología en Mendoza de Scrobipalpula absoluta (Meyrick) Povolny (Lepidoptera: Gelechiidae), especie nueva para la República Argentina. Rev. Fac. Cs. Agr. Mendoza 15:96-104.

BEGON, M; JL HARPER & CR TOWNSEND. 1995. EcologÌa. Individuos, poblaciones y comunidades. Omega. Barcelona, España. 886 pp.

BULTMAN, TL & SH FAETH. 1986. Effect of within leaf density and leaf size on pupal weight of a leaf miner, Cameraria (Lepidoptera: Gracillariidae). Southwest. Nat. 31:201-206.

CLANCY, KM; PW PRICE & CF SACCHI. 1993. Is leaf size important for a leaf-galling sawfly (Hymenoptera: Tenthredinidae)? Environ. Entomol. 22:16-126.

FAETH, SH. 1986. Indirect interactions between temporally separated herbivores mediated by the host-plant. Ecology 67:479-494.

FAETH, SH. 1991. Effect of oak leaf size on abundance, dispersion, and survival of the leafminer Cameraria sp. (Lepidoptera: Gracillariidae). Environ. Entomol. 20:196-204.

GARCÕA, MF & JC ESPUL. 1982. Biotecnología de la polilla del tomate (Scrobipalpula absoluta) en Mendoza, República Argentina. Revista de Investigaciones Agropecuarias-INTA 17:135-146

GIUSTOLIN, TA & JD VENDRAMIM. 1994. Efeito de duas espÈcies de tomateiro na biologia de Scrobipalpuloides absoluta (Meyrick). An. Soc. Entomol. Brasil 23:511-517.

HAIRSTON, NG; FE SMITH & LB SLOBODKIN. 1960. Community structure, population control, and competition. Am. Nat. 94:421-425.

HUNTER, MD & P PRICE. 1992. Playing chutes and ladders: heterogeneity and relative roles of bottom-up and top-down forces in natural communities. Ecology 73:724-732.

KIMBERLING, DN & PW PRICE. 1996. Competition, leaf morphology, and host clone effects on leaf-galling grape phylloxera (Homoptera: Phylloxeridae). Environ. Entomol. 25:1147-1153.

LEITE, GLD; M PICANCO; JC ZANUNCIO; GN JHAM & MF MOURA. 1999. Efecto de los niveles de fertilizaciÛn en la intensidad de ataque de Tuta absoluta en Lycopersicum hirsutum y L. esculentum. Manejo Integrado de Plagas 53:72-76.

MOORE, JE. 1983. Control of tomato leafminer (Scrobipalpula absoluta) in Bolivia. Trop. Pest Manage. 29:231-238.

OHGUSHI, T. 1992. Resource limitation on insect herbivore populations. Pp. 200-241 en: M Hunter; T Ohgushi & P Price (eds). Effects of resource distribution on animal-plant interactions. Academic Press. 495 pp.

POLACK, LA. 1997. El control químico en el contexto del manejo integrado de plagas. En: 7a Jornadas sobre Cultivos Protegidos. UEEA INTA Gran Buenos Aires - Facultad de Ciencias Agrarias y Forestales, UNLP. 5p.

PRICE, PW. 1992. Plant resources as the mechanistic basis for the insect herbivore population dynamics. Pp. 139-175 en: M Hunter; T Ohgushi & P Price(eds). Effects of resource distribution on animal-plant interactions. Academic Press. 495 pp.

PRICE, PW; CE BOUTON; P GROSS; BA MCPHERON; JN THOMPSON & AE WEIS. 1980. Interactions among three trophic levels: influence of plants on interactions between insect herbivores and natural enemies. Annu. Rev. Ecol. Syst. 11:41-65.

QUIRING, DT & JN MCNEILL. 1984. Exploitation and interference intraspecific larval competition in the dipteran leaf miner, Agromyza frontella (Rondani). Can. J. Zool. 62:421-427.

RAZURI, V & E VARGAS. 1975. Biología e comportamiento de Scrobipalpula absoluta (Meyrick) (Lepidoptera: Gelechiidae) en tomatera. Rev. Peru. Entomol. 18:84-89.

SOUZA, JC & PR REIS. 1986. Controle da traca do tomateiro em Minas Gerais. Pesqui. Agropecu. Bras. 21:343-354.

STILING, PD; BV BRODBECK & DR STRONG. 1984. Intraspecific competition in Hydrella valida (Diptera: Ephydridae) a leaf miner of Spartina alterniflora. Ecology 65:660-662.

STRONG, DR; JH LAWTON & R SOUTHWOOD. 1984. Insects on plants. Harvard University Press.

SUINAGA, FA; M PICANCO; GN JHAM & SH BROMMON-SCHENKEL. 1999. Causas químicas de resistencia de Lycopersicum peruvianum (L.) a Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae). An. Soc. Entomol. Brasil 28:313-321.

THOMAZINI, APBW; JD VENDRAMIN & MTR LOPES. 2000. Extratos aquosos de Trichilia pallida e a traca do tomateiro. Sci. Agric. 57:13-17.

TORRES, JB; CA FARIA; WS EVANGELISTA & D PRATISSOLI. En prensa. Within-plant distribution of the leaf miner Tuta absoluta (Meyrick) immatures in processing tomatoes, with notes on plant phenology. Int. J. Pest Manage.

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Published

2002-12-01

How to Cite

Pereyra, P. C. (2002). Evidence of intraspecific competition in early instars of the tomato moth, Tuta absoluta (Lepidoptera: Gelechiidae). Ecología Austral, 12(2), 143–148. Retrieved from https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1553

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Vol. 12 No. 2 (2002)

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