Calvão Lenize Batista, Faria Ana Paula J, de Paiva Carina Kaory Sasahara, Oliveira-Junior José Max Barbosa, Muzón Javier, Córdoba-Aguillar Alex, Juen Leandro
Programa de Pós-Graduação em Ecologia, Universidade Federal do Pará, Belém, Pará, Brazil.
Laboratório de Ecologia e Conservação (LABECO), Instituto de Ciências Biológicas (ICB), Universidade Federal do Pará (UFPA), Belém, Pará, Brazil.
PLoS One. 2025 Jun 26;20(6):e0311072. doi: 10.1371/journal.pone.0311072. eCollection 2025.
Environmental architecture and body temperature drive the distribution of ectothermic species, especially those with specific ecophysiological requirements or narrow ecological niches. In this study, we evaluated the connection between thorax temperature and niche specialization concerning the abundance and species contribution to the beta diversity of adult Odonata in Amazonian streams, employing the Species Contribution to Beta Diversity (SCBD). Our hypotheses were (i) Odonata species' thorax temperature is positively correlated with both morphology (thorax width) and air temperature and differ between suborders. (ii) The thorax temperature of the Odonata assemblage serves as a more influential predictor than niche specialization in determining species abundance and SCBD. We sampled 46 streams in an anthropized landscape in the Northeastern and Southeastern regions of Pará state, Brazil. Notably, niche breadth emerged as the variable influencing the abundance and SCBD of the Odonata assemblage. Niche position is negatively related with abundance only for Zygoptera. Anisoptera exhibited a negative relationship between abundance and thoracic temperature. On the other hand, Zygoptera had positive relationship between abundance and thoracic temperature. In summary, our results underscore the necessity of considering both niche and ecophysiological predictors to comprehensively assess the Odonata assemblage in Amazonian streams. This holistic approach has implications for conservation efforts and bioassessment practices, offering valuable insights into the collective response of Odonata as a group.
环境结构和体温驱动着变温动物的分布，尤其是那些有特定生态生理需求或生态位狭窄的物种。在本研究中，我们运用物种对β多样性的贡献（SCBD），评估了亚马逊河流域成年蜻蜓目昆虫的胸部温度与生态位特化之间的联系，以及物种对β多样性的贡献。我们的假设是：（i）蜻蜓目物种的胸部温度与形态（胸部宽度）和气温均呈正相关，且在不同亚目之间存在差异。（ii）在决定物种丰富度和SCBD方面，蜻蜓目昆虫组合的胸部温度比生态位特化更具影响力。我们在巴西帕拉州东北部和东南部一个人为影响的景观中对46条溪流进行了采样。值得注意的是，生态位宽度是影响蜻蜓目昆虫组合丰富度和SCBD的变量。生态位位置仅对均翅亚目昆虫的丰富度呈负相关。差翅亚目昆虫的丰富度与胸部温度呈负相关。另一方面，均翅亚目昆虫的丰富度与胸部温度呈正相关。总之，我们的结果强调了在全面评估亚马逊河流域蜻蜓目昆虫组合时，需要同时考虑生态位和生态生理预测因素。这种整体方法对保护工作和生物评估实践具有重要意义，为蜻蜓目昆虫作为一个群体的集体反应提供了有价值的见解。
