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| Caldas,Astrid. |
| A different approach was used for the key-factor method in a population study of the tropical butterfly Fountainea ryphea (Cramer, [1776]) (Lepidoptera, Nymphalidae), marking 20 artificial cohorts to identify the mortality levels and associated instars responsible for the variation in numbers within the season of occurrence, when generations overlap broadly. Highest mortality was detected during first instar in 13 cohorts; during second instar in three cohorts; third and fourth instars suffered highest mortality twice. Results showed that first instar mortality due to rainfall and predation, and parasitism on fourth instar could be the main factors promoting differences in number between cohorts throughout the season, although no density-dependent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bracon; K-factor; Parasitism; Predation. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200009 |
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| Wanderley,Paulo Alves; Wanderley,Maria José Araújo; Medeiros,Marcos Barros de; Veiga,Antônio Fernando de Souza Leão da. |
| Estudaram-se a presença e a ação de himenópteros parasitóides em agroecossistema de batata-doce (Ipomoea batatas L.) no município de Pedra de Fogo - PB, sobre o complexo Megastes spp, com o objetivo de identificar as espécies de parasitóides existentes, bem como descrever os principais eventos na ação de parasitismo sobre Megastes grandalis Guenee e Megastes pusialis Snellen. No levantamento direto, em 14% das plantas, existiam fêmeas de microhimenópteros ectoparasitóides da família braconidae atacando lagartas de Megastes spp. No levantamento indireto, constatou-se um ataque de parasitóide em 22% das lagartas, emergindo adultos de sete espécies das famílias braconidae, Chalcididae e Ichneumonidae, com predominância de braconídeos ectoparasitóides.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Controle biológico; Bracon. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000400044 |
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| Achterberg, C. van; Polaszek, A.. |
| A review is given of the parasites (parasitoids) of the African cereal stem borers (including introduced species) belonging to the family Braconidae (Hymenoptera); 38 species belonging to 19 genera are keyed and treated. Three new species are described: Macrocentrus sesamivorus spec. nov. from Kenya, Somalia, and Zaïre (Macrocentrinae), Iphiaulax pilisoma spec. nov. from Senegal, and Amyosoma flavistigma spec. nov. from Australia (Braconinae). New synonyms are: Euglyptobracon Telenga, 1936, with Pseudovipio Szépligeti, 1896; Lorenzoa de Stefani-Perez, 1909, Kulczynskia Niezabitowski, 1910, and Chivinia Shestakov, 1932, with Bracon Fabricius, 1804; Euvipio Szépligeti, 1904, with Stenobracon Szépligeti, 1901; Glyptomorpha baetica var. mauretanica Szépligeti,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Braconidae; Cossidae; Crambidae; Noctuidae; Pyralidae; Parasites; Parasitoids; Cereal stem borers; Amicrocentrum; Bassus; Amyosoma; Bracon; Digonogastra; Iphiaulax; Mesobraconoides; Steno- bracon; Euvipio; Tropobracon; Chelonus; Phanerotoma; Parallorhogas; Rhaconotus; Meteorus; Macrocentrus; Cotesia; Dolichogenidea; Glyptapanteles; Orgilus; Afrotropical; Oriental; Australian; East Palaearctic; Nearctic; Distribution; Keys; Biology.; 42.75. |
| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/317822 |
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