Programa de Pós-Graduação Em Ecologia, Instituto de Ciências Biológicas, Univ Federal Do Pará, Belém, PA, Brazil.
Lab de Ecologia e Conservação, Instituto de Ciências Biológicas, Univ Federal Do Pará, Belém, PA, Brazil.
Neotrop Entomol. 2024 Apr;53(2):314-322. doi: 10.1007/s13744-023-01108-3. Epub 2023 Dec 18.
Biological communities have their biodiversity patterns affected by environmental, spatial, and biogeographic factors that vary from taxa to taxa, and often between life stages. This is especially true when there are differences in the habitat the species use in each of them. Individuals of the insect order Trichoptera are mostly aquatic in their larval stage and terrestrial in their adult stage, which may result in different behaviors and environmental requirements. Our goal was to evaluate the congruence between the larval and adult stages of Trichoptera in Amazonian streams regarding their abundance, richness, and assemblage composition. Additionally, we tried to identify the main environmental factors related to each life stage. For this, larvae and adults of Trichoptera were sampled in the same sites at 12 streams in the Caxiuanã National Forest, Pará state, Brazil. Adult assemblages had greater richness of genera and abundance of individuals than the larval ones, and there was no congruence in the genera composition between these life stages. Our results also showed that different environmental variables structured Trichoptera larvae and adults. Since the sampling of larvae and adults proved to be complementary in the studied streams, we advise that Trichoptera diversity surveys consider both life stages of these organisms.
生物群落的生物多样性模式受到环境、空间和生物地理因素的影响，这些因素因分类群而异，在生命阶段之间也经常存在差异。当物种在每个阶段使用的栖息地存在差异时，情况尤其如此。鳞翅目昆虫的个体在幼虫期主要是水生的，在成虫期是陆生的，这可能导致不同的行为和环境需求。我们的目标是评估亚马逊河流域鳞翅目昆虫幼虫和成虫阶段在丰度、丰富度和组合组成方面的一致性。此外，我们还试图确定与每个生命阶段相关的主要环境因素。为此，在巴西帕拉州卡西亚努阿国家森林的 12 条溪流中，在同一地点同时采集了鳞翅目昆虫的幼虫和成虫。成虫组合的属丰富度和个体丰度均高于幼虫，这两个生命阶段的属组成没有一致性。我们的结果还表明，不同的环境变量构建了鳞翅目昆虫的幼虫和成虫。由于在研究溪流中幼虫和成虫的采样是互补的，因此我们建议对鳞翅目多样性进行调查时，应考虑这些生物的两个生命阶段。
