New records of dragonflies and damselflies (Insecta: Odonata) from Amapá state, Brazil

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Abstract

Abstract: The Odonata Order comprises one of the largest groups of aquatic insects, 7,000 species are described worldwide, with approximately 860 species registered in Brazil, around 14% of the global fauna known to date. However, there are still great gaps in the knowledge of Odonata fauna in many areas of Brazil. This study aims to present the results of the survey of Odonata species sampled in three counties in the state of Amapá. The state is located in the north of the country, inserted in the Amazon Biome. Odonata were caught between January and December 2018, with 472 specimens being sampled, belonging to seven families, 36 genera and 53 species. In total, 27 of the species found during the study correspond to new records for the state of Amapá. Due to the lack of information on the diversity of the Odonata order in Amapá, the list of species presented should serve as input for new studies contributing to the knowledge of the order in the state.

Translated abstract

Resumo: A ordem Odonata compreende um dos maiores grupos de insetos aquáticos, mundialmente são descritas 7.000 espécies, sendo que, para o Brasil estão registradas aproximadamente 860 espécies, algo em torno de 14% da fauna global conhecida até o momento. No entanto, ainda existem grandes lacunas no conhecimento da odonatofauna em muitas áreas do Brasil. Este estudo tem como objetivo apresentar o resultado do levantamento de espécies de Odonata amostradas em três municípios do estado Amapá. O estado se encontra na região norte do país, inserido no Bioma amazônico. As capturas de Odonata foram realizadas entre os meses de janeiro e dezembro de 2018, sendo amostrados 472 espécimes pertencentes a sete famílias, 36 gêneros e 53 espécies. No total, 27 das espécies encontradas durante o estudo correspondem a novos registros para o estado do Amapá. Devido à falta de informação sobre a diversidade da ordem Odonata no Amapá, a lista de espécies apresentada deve servir de aporte para novos estudos contribuindo com o conhecimento da ordem no estado.

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Most cited references 46

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Freshwater biodiversity and aquatic insect diversification.

Klaas-Douwe B Dijkstra, Michael Monaghan, Steffen U. Pauls (2014)

Inland waters cover less than 1% of Earth's surface but harbor more than 6% of all insect species: Nearly 100,000 species from 12 orders spend one or more life stages in freshwater. Little is known about how this remarkable diversity arose, although allopatric speciation and ecological adaptation are thought to be primary mechanisms. Freshwater habitats are highly susceptible to environmental change and exhibit marked ecological gradients. Standing waters appear to harbor more dispersive species than running waters, but there is little understanding of how this fundamental ecological difference has affected diversification. In contrast to the lack of evolutionary studies, the ecology and habitat preferences of aquatic insects have been intensively studied, in part because of their widespread use as bioindicators. The combination of phylogenetics with the extensive ecological data provides a promising avenue for future research, making aquatic insects highly suitable models for the study of ecological diversification.