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<p>Several species of fruit flies (Diptera: Tephritidae) are economically important pests for fruit growing because they damage fruit production and exports. This study evaluated the species richness, abundance, composition across canopy cover, and vertical distribution of <i>Anastrepha</i> Schiner species in a relict Atlantic Forest fragment, Northeast Brazil. Multilure traps were installed at 2 and 4&#xa0;m in open- and closed-canopy areas from February 2023 to January 2024. Abundance and richness were modeled with GLM Models including canopy cover, trap height, and their interaction as fixed effects. Diversity was assessed using Hill numbers: species richness (q = 0), Shannon (q = 1), and Simpson (q = 2), faunistic analysis applied frequency, constancy, and dominance criteria, and species composition was analyzed with NMDS and PERMANOVA. A total of 207 specimens were collected, representing 10 species. Abundance was significantly higher in closed canopy, while richness and vertical distribution showed no effects, although several species occurred only at 4&#xa0;m. Hill numbers indicated greater richness under closed canopy, whereas open canopy was dominated by generalist taxa, especially <i>A. obliqua </i>(Macquart). NMDS stress was low and PERMANOVA showed no significant compositional differences between treatments. Assemblages were strongly dominated by <i>A. obliqua</i>, <i>A. bahiensis </i>Lima, and <i>A. fraterculus </i>(Wiedemann), while most species were infrequent. These results expand the known distribution of <i>Anastrepha</i> in Northeast Brazil, highlight the conservation value of Atlantic Forest remnants, and support their systematic inclusion in biodiversity monitoring and pest management programs.</p>

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Influence of canopy cover on the diversity of Anastrepha (Diptera: Tephritidae) in an Atlantic forest fragment in Brejo Paraibano, Northeast Brazil

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Manoel Cícero de Oliveira Filho,
  • Janderson Batista Rodrigues Alencar,
  • Alexandre Santos Araújo,
  • Nyeppson de Sousa Soares,
  • Lylian Souto Ribeiro,
  • Marcoandre Savaris,
  • Carlos Henrique de Brito

摘要

Several species of fruit flies (Diptera: Tephritidae) are economically important pests for fruit growing because they damage fruit production and exports. This study evaluated the species richness, abundance, composition across canopy cover, and vertical distribution of Anastrepha Schiner species in a relict Atlantic Forest fragment, Northeast Brazil. Multilure traps were installed at 2 and 4 m in open- and closed-canopy areas from February 2023 to January 2024. Abundance and richness were modeled with GLM Models including canopy cover, trap height, and their interaction as fixed effects. Diversity was assessed using Hill numbers: species richness (q = 0), Shannon (q = 1), and Simpson (q = 2), faunistic analysis applied frequency, constancy, and dominance criteria, and species composition was analyzed with NMDS and PERMANOVA. A total of 207 specimens were collected, representing 10 species. Abundance was significantly higher in closed canopy, while richness and vertical distribution showed no effects, although several species occurred only at 4 m. Hill numbers indicated greater richness under closed canopy, whereas open canopy was dominated by generalist taxa, especially A. obliqua (Macquart). NMDS stress was low and PERMANOVA showed no significant compositional differences between treatments. Assemblages were strongly dominated by A. obliqua, A. bahiensis Lima, and A. fraterculus (Wiedemann), while most species were infrequent. These results expand the known distribution of Anastrepha in Northeast Brazil, highlight the conservation value of Atlantic Forest remnants, and support their systematic inclusion in biodiversity monitoring and pest management programs.