Coloration patterns of the tegmina of Mahanarva spectabilis (Hemiptera: Cercopidae): biological, morphological and genetic bases

Authors

  • Ricardo Aquino Borges Department of Zoology, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil.
  • Alexander Machado Auad Entomology Laboratory, Embrapa Dairy Cattle Research Station http://orcid.org/0000-0002-3420-201X
  • Marcy das Graças Fonseca Laboratory of Entomology, Embrapa Dairy Cattle Research Station, Juiz de Fora, MG, Brazil;
  • Cristiano Amancio Vieira Borges Embrapa Dairy Cattle Research Station, Juiz de Fora, MG, Brazil
  • Ana Luiza Souza Azevedo Embrapa Dairy Cattle Research Station, Juiz de Fora, MG, Brazil
  • Tiago Teixeira de Resende Laboratory of Entomology, Embrapa Dairy Cattle Research Station, Juiz de Fora, 36038-330, Minas Gerais, Brazil
  • Gervásio Silva Carvalho Pontifical Catholic University of Rio Grande do Sul, Porto Alegre- RS, Brazil.
  • Fernando Rodrigues de Oliveira Laboratory of Entomology, Embrapa Dairy Cattle Research Station, Juiz de Fora, 36038-330, Minas Gerais, Brazil

Abstract

This study examines the tegminal coloration pattern and the morphometry of Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae) progeny of crosses between parents with differing wing patterns. Genetic studies were used to investigate whether the different coloration patterns of tegmina have resulted from speciation within the M. spectabilis clade. We crossed M. spectabilis with differing wing patterns to determine percentages of coloration standards of the tegmina and the biometry of the first generation (F1) progeny. DNA of specimens was extracted and analyzed. The results show that parental phenotype was a determining factor in the tegminal coloration pattern of offspring of generation F1. Slight variation exists in the specimens’ morphometry; no grouping trend is evident with regard to specimens with different tegminal coloration patterns. Based on the characteristics of the population analyzed herein, it seems that there has been no speciation of M. spectabilis.

 

Resumo

Avaliou-se o padrão de coloração de asas e a morfometria da descendência de cruzamentos entre pais com diferentes padrões de asas de Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae). Estudos genéticos foram utilizados para investigar se os diferentes padrões de coloração das asas resultaram de especiação de M. spectabilis. Utilizou-se casais de M. spectabilis com diferentes padrões de asas para determinar as porcentagens dos padrões de coloração das asas e a biometria da progênie de primeira geração (F1). O DNA das amostras foi extraído e analisado. Os resultados mostraram que o fenótipo parental foi um fator determinante no padrão de coloração das asas dos descendentes da geração F1. Verificou-se pequena variação na morfometria das amostras; nenhuma tendência de agrupamento é evidente em amostras com diferentes padrões de coloração de asas. Com base nas características da população analisada, não houve especiação de M. spectabilis.

Key Words: forage; speciation; spittlebug

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Published

2020-09-25

Issue

Vol. 103, No. 3 (September 2020)

Section

Research Papers

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