Resultados de búsqueda - EGGS

Parasitoides (Hymenoptera) de insectos plaga del cultivo de soja en el centro sur de la provincia de Santa Fe (Argentina) = Parasitoids (Hymenoptera) of insect pests in soybean cro... por Molinari, Alicia Maria, Monetti, Norma Cristina

“…Four parasitoids were identified in hemipterous eggs. This parasite complex appeared to be important in helping to regulate pests in soybean. …”
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The preimaginal stages and development of Spalangia cameroni Perkins (Hymenoptera: Pteromalidae) on Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) por Tormos, José, Beitia, Francisco J., Böckmann, Elias A., Asís, Josep D.

“…The surface of the chorion of the egg is smooth and the micropyle occurs at the anterior end. …”
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Parasitoid community of Protopulvinaria pyriformis (Hemiptera: Coccidae) on laurel: Influence of host size, seasonal trend and aggregation on its main parasitoid por Beltrá, Aleixandre, Soto, Antonia, Tena, Alejandro

“…M. helvolus behaved as a facultative gregarious parasitoid and its secondary sex ratio was always female biased (0.3 males per scale) when it parasitized the 3rd instar and the adults. The number of eggs allocated per host, as well as the number of parasitoids that emerged, increased with scale size. …”
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Development of methods for cryopreservation of rooster sperm from the endangered breed "Gallina Valenciana de Chulilla" using low glycerol concentrations por Blanch, Eva, Tomás, Cristina, Casares-Crespo, Lucía, Gómez, Ernesto A., Sansano, Sofía, Gimenez, I., Mocé, Eva

“…However, the sperm fertilizing ability was similar for all the treatments (23%-30% fertilized eggs), and increased as the glycerol concentration decreased. …”
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Could sterile males be used to vector a microbiological control agent? The case of Rhynchophorus ferrugineus and Beauveria bassiana por Llácer, Elena, Santiago-Álvarez, Cándido, Jaques, Josep A.

“…Although male longevity decreased after irradiation (118.6 vs. 244.7 days for irradiated and control males, respectively) and their testes suffered from the treatment, fecundity of mated females did not depend on the irradiation status of the male (86.8 +/- 5.5 eggs in 15 days). However, egg hatching was significantly lower in couples with irradiated males (31.4% vs. 86.5% for irradiated and control couples, respectively), and this value decreased after a second mating (6.1% vs. 85.9%). …”
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Seasonal trends, sampling plans and parasitoid complex of the Chinese wax scale, Ceroplastes sinensis Del Guercio (Hemiptera: Coccidae), in Mediterranean citrus groves por Martínez-Ferrer, María T., Campos-Rivela, J. M., Verdú, María J.

“…Egg hatching began in mid-June, and in the first quarter of August, the maximum percentage of hatched eggs was reached. …”
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Does host quality dictate the outcome of interference competition between sympatric parasitoids? Effects on their coexistence por Cebolla, Ruth, Bru, Pablo, Urbaneja, Alberto, Tena, Alejandro

“…When they found heterospecific parasitized hosts of high quality, Aphytis melinus laid more eggs and accepted significantly more hosts than Aphytis chrysomphali, whereas there were no significant differences in the low-quality instar. …”
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Intraguild predation and competitive displacement between Nesidiocoris tenuis and Dicyphus maroccanus, two biological control agents in tomato pests por Salas Gervassio, Nadia G., Pérez-Hedo, Mertixell, Luna, Maria G., Urbaneja, Alberto

“…We next studied exploitative competition between adults and nymphs of each species when feeding on Ephestia kueniella Zeller (Lepidoptera: Pyralidae) eggs in the laboratory. Finally, to analyze the competitive displacement between both mirids, we conducted a semifield experiment in which both predators were released together. …”
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Natal host and learning as factors in host preference by Spalangia cameroni Perkins (Hymenoptera: Pteromalidae) por Tormos, José, Beitia, Francisco J., Asís, Josep D., De-Pedro, Luis

“…Superparasitism (the number of pupae with supernumerary eggs) differed significantly for the two attacked hosts and with experience, being higher in the house fly and in females experienced with medfly, respectively, but it did not influence the total progeny. …”
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Floral feeding increases diet breadth in a polyphagous mirid por Pan, Hongsheng, Tena, Alejandro, Xiu, Chunli, Liu, Bing, Lu, Yanhui, Desneux, Nicolas

“…In two laboratory studies, adults preferred to lay eggs on the plants at flowering stage over those at vegetative stage and immatures failed to develop on the vegetative tissues of five of the eight species. …”
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Genetic Variation in the Feeding Behavior of Isofemale Lines of Nesidiocoris tenuis por Chinchilla-Ramírez, Milena, Pérez-Hedo, Mertixell, Pannebakker, Bart A., Urbaneja, Alberto

“…We compared nine isofemale lines on their capacity to produce necrotic rings and wilting on tomato plants as a proxy for phytophagy, as well as their efficacy to prey on Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) eggs, as a proxy for zoophagy. Differences between isofemale lines in phytophagy and zoophagy indicated a genetic basis. …”
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Use of zoophytophagous mirid bugs in horticultural crops: current challenges and future perspectives por Pérez-Hedo, Mertixell, Riahi, Chaymaa, Urbaneja, Alberto

“…Mirid bugs feed effectively on a wide range of prey, such as whiteflies, lepidopteran eggs and mites. In addition, the phytophagous behavior of mirid bugs can activate defenses in the plants on which they feed. …”
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Effects of abiotic conditions on interactions among three predators of Tetranychus urticae (Acarina:Tetranychidae) por Urbaneja-Bernat, Pablo, Montserrat, Marta, Jaques, Josep A.

“…In this work we evaluated in the laboratory how abiotic conditions affect the performance of the three species of phytoseiid mites, both while interacting with each other and in the presence or absence of either pollen or T. urticae eggs. Our results show that abiotic conditions significantly affected different biological parameters of the three predatory mite species. …”
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Effect of pollen provision on life‐history parameters of phytoseiid predators under hot and dry environmental conditions por Urbaneja-Bernat, Pablo, Jaques, Josep A.

“…Moreover, access to pollen in combination with T. urticae eggs enhanced survival but reduced predation and oviposition relative to a T. urticae-only diet for N. californicus and P. persimilis. …”
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Life history of Eretmocerus mundus, a parasitoid of Bemisia tabaci, on tomato and sweet pepper por Urbaneja, Alberto, Sánchez, E., Stansly, Philip A.

“…All whitefly nymphs were observed for host feeding and inverted to count parasitoid eggs. Adult longevity was estimated at 7.3±0.8 d on tomato and 10.1±1.0 d on sweet pepper. …”
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Biology of Aganaspis daci (Hymenoptera: Figitidae), parasitoid of Ceratitis capitata (Diptera: Tephritidae): Mode of reproduction, biological parameters and superparasitism por De-Pedro, Luis, Tormos, José, Asís, Josep D., Sabater-Munoz, Beatriz, Beitia, Francisco J.

“…The existence of self-superparasitism was confirmed for females acting alone, whilst female aggregation led to a higher intensity (up to eight eggs/host pupa) and percentage of, presumably, conspecific superparasitism. …”
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The effects of postharvest carbon dioxide and a cold storage treatment on Tuta absoluta mortality and tomato fruit quality por Riudavets, Jordi, Alonso-Valiente, Miquel, Gabarra, Rosa, Arnó, Judit, Jaques, Josep A., Palou, Lluís

“…T. absoluta was unable to complete its development from egg to adult on fruit of three tomato varieties. …”
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Tomato trichomes are deadly hurdles limiting the establishment of Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) por Paspati, Angeliki, Rambla, Jose L., López-Gresa, María P., Arbona, Vicent, Gómez-Cadenas, Aurelio, Granell, Antonio, González-Cabrera, Joel, Urbaneja, Alberto

“…The survival of A. swirskii eggs and juveniles on tomato leaves was not different from that on sweet pepper. …”
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Toxoptera citricida (Kirkaldy) (Hemiptera, Aphididae) and its natural enemies in Spain por Hermoso-De-Mendoza, Alfonso, Álvarez, Almudena, Michelena, José Manuel, González, Pilar, Cambra, Mariano

“…Chaenomeles speciosa (Rosaceae) has been found as an occasional alternative host for T. citricida. No winter eggs of T. citricida have been seen. CTV spread has not been detected in northern Spain. …”
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Comportamiento de oviposición de la avispa sierra del sauce Nematus oligospilus (Hymenoptera: Tenthredinidae): el rol de los semioquímicos en la elección de plantas hospederas por Braccini, Celina Laura

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