Abstract
This work aimed to study the structure of functional groups of entomofauna associated to aquatic macrophytes in Correntoso river, Rio Negro sub-region, Pantanal, Mato Grosso do Sul State, Brazil. Six samples were taken in different seasonal periods; ebb, dry and wet. The organisms were collected using D net (300 m mesh), sweeping five times through the roots of macrophyte banks at each sample session. Three environments were compared (open, intermediary, close) using data from six collection sites, through which were analyzed absolute abundance, observed richness of families and the sampled specimens were also separated in functional groups. A total of 60 families from 12 orders of Insecta were registered, totaling 19,773 sampled insects. The largest number of families was categorized into predators functional group, with 34 families collected, followed by the collectors with 17, shredders-herbivores ten and scrapers eight.
Highlights
The Pantanal is located in the central portion of South America, in the Paraguai river Basin, comprising floodable areas of Brazil, Bolivia and Paraguay, and is considered one of the largest floodplains of Latin America
Six sites with three distinct phytophysiognomies of riparian formation were chosen for the insect sampling: (a) open riparian physiognomy (ORP), (b) intermediary riparian physiognomy (IRP) and (c) closed riparian physiognomy (CRP) (Appendix 1)
Predators group showed the highest number of families in this period, 18 families were sampled in ORP, 20 in IRP and 23 in CRP
Summary
The Pantanal is located in the central portion of South America, in the Paraguai river Basin, comprising floodable areas of Brazil, Bolivia and Paraguay, and is considered one of the largest floodplains of Latin America. This region is a floodplain influenced by the rivers that drain the upper Paraguai river Basin, where there is great diversity of fauna and flora, determined by the contribution of four biomes: Amazon, “Cerrado”, “Chaco” and Atlantic Forest (ALHO; GONÇALVES, 2005). Biological Sciences terrestrial, depending on their communication level with the main river (THOMAZ et al, 1997) These areas stand out by the complexity of their systems, as well as their functioning dynamism, clearly associated with the hydrological conditions that occur within these areas (ALHO, 2008; SILVA et al, 2009). The aquatic entomofauna, mainly represented by specimens of the orders Ephemeroptera, Plecoptera, Trichoptera, Odonata, Coleoptera and Diptera, is one of the most important groups found in lotic aquatic ecosystems, associated with aquatic plants and sediment, actively participates in the nutrient cycling and energy flow and is widely used as indicator of environmental quality (MERRITT; CUMMINS, 1996)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
