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<p>Global climate change and the accelerated urbanization process of coastal habitats have resulted in a drastic reduction in biodiversity, including lepidopteran fauna. Restinga areas have been strongly impacted by urbanization, but data on species composition, endemism, or extinction risks, mainly for its entomofauna, remains scarce. Studies involving Lepidoptera communities are fundamental to management and conservation plans of insect fauna and the ecosystem services. In this study, we evaluated whether seasonal variations influence the community structure of diurnal butterflies and moths at the Restinga of Barreto Municipal Natural Park (PNMRB) in Macaé, Rio de Janeiro, Brazil. We actively searched for butterflies and diurnal moths between 2019 and 2020 and captured them using an entomological net. We tested whether species richness and abundance varied between different periods of the day (morning and afternoon) and seasons (dry and rainy season). We sampled a total of 236 individuals representing 40 butterflies and diurnal moth from eight families. Species abundance and richness were higher during the dry season, when average temperature, relative humidity and rainfall are lower. We observed two peaks of species abundance during the day, one at ~ 10:00 am and the other at ~ 2:00 pm. Nymphalidae was the family with the greatest richness and abundance and the most abundant species were <i>Ascia monuste orseis</i> (Godart 1819), <i>Heliconius sara apseudes</i> (Hubner 1813) and <i>Dryas iulia alcionea</i> (Cramer 1779). The lepidopteran fauna of PNMRB presented a clear seasonal pattern, showing that climatic fluctuations related to variations in average temperature and rainfall can negatively affect this important group of pollinating insects. The survey of Lepidoptera diversity in the PNMRB can increase the knowledge about climatic effects on the temporal distribution and conservation of Neotropical Lepidoptera.</p>

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Seasonal Climatic effects on the Lepidoptera community in a peri-urban patch of “restinga” in Brazil

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Camila Tavares Brito Guedes,
  • Amanda Soares Miranda,
  • Alexandre Soares,
  • Leandro Bacci,
  • Yasmine Antonini,
  • Vinícius Albano Araújo

摘要

Global climate change and the accelerated urbanization process of coastal habitats have resulted in a drastic reduction in biodiversity, including lepidopteran fauna. Restinga areas have been strongly impacted by urbanization, but data on species composition, endemism, or extinction risks, mainly for its entomofauna, remains scarce. Studies involving Lepidoptera communities are fundamental to management and conservation plans of insect fauna and the ecosystem services. In this study, we evaluated whether seasonal variations influence the community structure of diurnal butterflies and moths at the Restinga of Barreto Municipal Natural Park (PNMRB) in Macaé, Rio de Janeiro, Brazil. We actively searched for butterflies and diurnal moths between 2019 and 2020 and captured them using an entomological net. We tested whether species richness and abundance varied between different periods of the day (morning and afternoon) and seasons (dry and rainy season). We sampled a total of 236 individuals representing 40 butterflies and diurnal moth from eight families. Species abundance and richness were higher during the dry season, when average temperature, relative humidity and rainfall are lower. We observed two peaks of species abundance during the day, one at ~ 10:00 am and the other at ~ 2:00 pm. Nymphalidae was the family with the greatest richness and abundance and the most abundant species were Ascia monuste orseis (Godart 1819), Heliconius sara apseudes (Hubner 1813) and Dryas iulia alcionea (Cramer 1779). The lepidopteran fauna of PNMRB presented a clear seasonal pattern, showing that climatic fluctuations related to variations in average temperature and rainfall can negatively affect this important group of pollinating insects. The survey of Lepidoptera diversity in the PNMRB can increase the knowledge about climatic effects on the temporal distribution and conservation of Neotropical Lepidoptera.