Plasticidade fisiológica e comportamental de Brevicoryne brassicae (L.) (Hemiptera: Aphididae) em duas variedades de Brassica oleraceae L.

Pereira, Cristiane Dias; Lomônaco, Cecília

doi:10.1590/s1519-566x2001000100006

Cited by 4 publications

(4 citation statements)

References 9 publications

(14 reference statements)

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“…Barriers to gene flow could not be investigated in M. persicae since this species reproduces only asexually at the latitude where the study was conducted. On the other hand, the conditioning of host choice, a process in which aphids tend to choose the host on which they were raised (Guldemond, 1990), could magnify the divergences between biotypes originating from disruptive selection (Pereira and Lomônaco, 2001).…”

Section: Plasticity Of Host Utilizationmentioning

confidence: 99%

Phenotypic plasticity of Myzus persicae (Hemíptera: Aphididae) raised on Brassica oleracea L. var. acephala (kale) and Raphanus sativus L. (radish)

Peppe

Lomônaco

2003

Genet. Mol. Biol.

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The study of variability generated by phenotypic plasticity is crucial for predicting evolutionary patterns in insect-plant systems. Given sufficient variation for plasticity, host race formation can be favored and maintained, even simpatrically. The plasticity of size and performance (assessed by the lifetime fitness index r m ) of six clones of Myzus persicae was tested, with replicates allowed to develop on two hosts, kale (Brassica oleracea var. acephala) and radish (Raphanus sativus). The clones showed significant variability in their plasticity. Reaction norms varied through generations and negative genetic correlation, although not significant, tend to increase with the duration of host use. The lack of plasticity in lifetime fitness among generalist clones occurred as an after-effect of the highly plastic determinants. Significant morphological plasticity in host used was observed, but no variation in the plastic responses (GxE interaction) was detected. Strong selection for a larger size occurred among individuals reared on radish, the most unfavorable host. Morphological plasticity in general body size (in a multivariate sense) was not linear related to fitness plasticity. These observations suggest that a high potential for the evolution of host divergence favors host race formation.

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Section: Plasticity Of Host Utilizationmentioning

confidence: 99%

Phenotypic plasticity of Myzus persicae (Hemíptera: Aphididae) raised on Brassica oleracea L. var. acephala (kale) and Raphanus sativus L. (radish)

Peppe

Lomônaco

2003

Genet. Mol. Biol.

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“…It could be that phytophagous insect populations can be genetically structured by the environment gradient created by phenotypic variation within host species. that have documented the absence of plasticity in reaction to host species, even in aphids ( Joshi & Thompson, 1995, Fry, 1996, Pereira & Lomônaco, 2001, Borja & Lomônaco, 2003, but the effects of nutritional quality on phenotypic variation of insect until now was unknown. nitrogen and/or compound related variation) probably hastens the host specialisation, as long as the host species differ considerably in their chemical composition.…”

Section: Discussionmentioning

confidence: 99%

“…(c) Fitness ( r m ); genotype was signifi cant ( Table 2 ). that have documented the absence of plasticity in reaction to host species, even in aphids ( Joshi & Thompson, 1995, Fry, 1996, Pereira & Lomônaco, 2001, Borja & Lomônaco, 2003, but the effects of nutritional quality on phenotypic variation of insect until now was unknown. Thus, the phenotypic plasticity allows an insect population to persist in different host species and also to survive in a variable environment imposed by variation in host quality.…”

Section: Discussionmentioning

confidence: 99%

Phenotypic plasticity of Brevicoryne brassicae in responses to nutritional quality of two related host plants

Leal‐Aguilar

Ruiz-Montoya

Perales

et al. 2008

Ecological Entomology

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1. The host species used by a herbivorous insect may impose different selective pressures promoting host race formation, yet the presence of plasticity can potentially constrain host race formation.2. The goal of this study is to determine if there is phenotypic plasticity in life history traits of Brevicoryne brassicae in response to host and nutritional quality of two host species, Brassica oleraceae and Brassica campestris , and to what extent there are genetic differences among genotypes in plasticity.3. Plants of B. oleraceae and B. campestris were fertilised with three different nitrogen doses (with nutritive solutions of 50, 200 and 400 ppm of soluble nitrogen) to produce plants with different nutritional qualities. Eight clones of B. brassicae were reared on those plants, and days to reproduction (DTR), number of nymphs, and fitness ( r m ) were recorded. 4. A significant genotype × host interaction was detected in days to reproduction. Genotype × nitrogen interaction (plasticity) was detected in the number of nymphs when aphids were raised on B. campestris . Aphids showed plasticity in DTR and marginal plasticity in r m in reaction to the varying nitrogen content of B. oleraceae .5. The phenotypic plasticity to fine-scale variation of host (nutritional quality) documented here may be an important source of phenotypic variation and may potentially constrain host race formation.

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“…Assim, esses insetos atingem, facilmente, altas densidades, o que compromete a qualidade e produtividade das culturas que atacam (Girousse et al 2003;ahMad & aslaM 2005). Seu corpo possui coloração verde acinzentada e apresenta produção de cera branca (ahMad & akhtar 2013), sendo que, quando adulto a secreção desta substância é tão abundante que cobre totalmente o tegumento (Pereira & loMônaco 2001).…”

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Ataque e Caracterização de Danos de Brevicoryne brassicae (L.) (Hemiptera: Aphididae) em Brachiaria decumbens Stapf e Panicum maximum Jacq.

et al. 2014

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Resumo.As pastagens cultivadas constituem a base da bovinocultura no Brasil sendo que, os gêneros Brachiaria e Panicum ocupam lugar de destaque. Brachiaria decumbens Stapf possui vantagens como grande adaptabilidade a solos ácidos e de baixa fertilidade, ao clima tropical, além de proporcionar alto rendimento de massa seca. Panicum maximum Jacq. é importante devido ao alto potencial de produção de massa seca por unidade de área, adaptabilidade, qualidade de forragem, facilidade de estabelecimento e aceitabilidade pelos animais. Foi observado o ataque do pulgão Brevicoryne brassicae (L.), comumente encontrado em hortaliças, principalmente nas do gênero Brassica, nestas gramíneas, causando danos como amarelecimento de folhas, depauperamento e formação de fumagina em plantas cultivadas em casa de vegetação. Este inseto poderá se tornar uma praga potencial de B. decumbens cv. Basilisk e P. maximum cv. Tanzânia se for confirmada sua adaptação aos novos hospedeiros em campo.Palavras-chave: Adaptação; Afídeo; Forrageiras. Attack and Damage Characterization of Brevicoryne brassicae (L.) (Hemiptera: Aphididae) inBrachiaria decumbens Stapf and Panicum maximum Jacq.Abstract. The cultivated pastures are the basis of cattle rearing in Brazil and the Brachiaria and Panicum genera are most important. Brachiaria decumbens Stapf has great advantages such as adaptability to acid soils of low fertility, to the tropical climate and to providing high yield of dry matter. Panicum maximum Jacq. is important because of the high potential production of dry mass per unit area, adaptability, forage quality, ease of establishment and acceptability by animals. It was reported the attack and damage of the aphid Brevicoryne brassicae (L.), commonly found in vegetables, especially in the genus Brassica, in these grasses causing damage such as leaf yellowing, plant depletion and formation of sooty mold in the greenhouse. This insect can become a potential pest of B. decumbens cv. Basilisk and P. maximum cv. Tanzânia, if confirmed their adaptation to new hosts in the field.

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Plasticidade fisiológica e comportamental de Brevicoryne brassicae (L.) (Hemiptera: Aphididae) em duas variedades de Brassica oleraceae L.

Cited by 4 publications

References 9 publications

Phenotypic plasticity of Myzus persicae (Hemíptera: Aphididae) raised on Brassica oleracea L. var. acephala (kale) and Raphanus sativus L. (radish)

Phenotypic plasticity of Myzus persicae (Hemíptera: Aphididae) raised on Brassica oleracea L. var. acephala (kale) and Raphanus sativus L. (radish)

Phenotypic plasticity of Brevicoryne brassicae in responses to nutritional quality of two related host plants

Ataque e Caracterização de Danos de Brevicoryne brassicae (L.) (Hemiptera: Aphididae) em Brachiaria decumbens Stapf e Panicum maximum Jacq.

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