Diel variation of aquatic insect drift in streams of Southern Brazil
Some organisms, such as aquatic insects, are transported from the upstream to downstream region of streams through a process called drift. This process occurs in passive and active ways and can be variable throughout the day, mainly between the nocturnal and diurnal periods. Here, we evaluate the p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2021-09-01
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| Series: | Acta Scientiarum: Biological Sciences |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/54931 |
| _version_ | 1811229190296436736 |
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| author | Ramiro de Campos Jonathan Rosa Janet Higuti Tayane Cristina Buggenhagen Ana Carolina de Deus Bueno Krawczyk |
| author_facet | Ramiro de Campos Jonathan Rosa Janet Higuti Tayane Cristina Buggenhagen Ana Carolina de Deus Bueno Krawczyk |
| author_sort | Ramiro de Campos |
| collection | DOAJ |
| description |
Some organisms, such as aquatic insects, are transported from the upstream to downstream region of streams through a process called drift. This process occurs in passive and active ways and can be variable throughout the day, mainly between the nocturnal and diurnal periods. Here, we evaluate the periodicity of the drift of aquatic insects in two streams of the Middle Iguaçu basin, southern region of Brazil. We predicted that the drift of aquatic insects brings the highest richness, diversity and abundance during the nocturnal period, compared to the diurnal period. In addition, we expected that the composition of species is different between these periods. In each stream, aquatic insect sampling was carried out 10 times, for 24 hours, using drift nets. A total of 2,114 aquatic insect specimens were recorded, distributed in 26 families. Of these families, 20 were recorded during the diurnal period and 24 during the nocturnal period. Our results showed an increase in the diversity and abundance of aquatic insect drift in the nocturnal period. However, only abundance was significantly different between the periods. We attribute the higher abundance in nocturnal drift possibly to biological interactions. Thus, nocturnal drift can be a strategy of some aquatic insects to avoid visual predation by other invertebrates and/or vertebrates, in Neotropical streams. We highlight the importance of our study, because it can be used for comparison in surveys of lotic environments that have been impacted by human activity (e.g. by dam construction), which can alter the water flow, and consequently the pattern of insect drift.
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| first_indexed | 2024-04-12T10:11:40Z |
| format | Article |
| id | doaj.art-de24d0ec808a4efd92e2d183e6a8bb31 |
| institution | Directory Open Access Journal |
| issn | 1679-9283 1807-863X |
| language | English |
| last_indexed | 2024-04-12T10:11:40Z |
| publishDate | 2021-09-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Biological Sciences |
| spelling | doaj.art-de24d0ec808a4efd92e2d183e6a8bb312022-12-22T03:37:19ZengUniversidade Estadual de MaringáActa Scientiarum: Biological Sciences1679-92831807-863X2021-09-0143110.4025/actascibiolsci.v43i1.54931Diel variation of aquatic insect drift in streams of Southern BrazilRamiro de CamposJonathan Rosa0Janet Higuti1Tayane Cristina Buggenhagen2Ana Carolina de Deus Bueno Krawczyk3Universidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual do Paraná Universidade Estadual do Paraná Some organisms, such as aquatic insects, are transported from the upstream to downstream region of streams through a process called drift. This process occurs in passive and active ways and can be variable throughout the day, mainly between the nocturnal and diurnal periods. Here, we evaluate the periodicity of the drift of aquatic insects in two streams of the Middle Iguaçu basin, southern region of Brazil. We predicted that the drift of aquatic insects brings the highest richness, diversity and abundance during the nocturnal period, compared to the diurnal period. In addition, we expected that the composition of species is different between these periods. In each stream, aquatic insect sampling was carried out 10 times, for 24 hours, using drift nets. A total of 2,114 aquatic insect specimens were recorded, distributed in 26 families. Of these families, 20 were recorded during the diurnal period and 24 during the nocturnal period. Our results showed an increase in the diversity and abundance of aquatic insect drift in the nocturnal period. However, only abundance was significantly different between the periods. We attribute the higher abundance in nocturnal drift possibly to biological interactions. Thus, nocturnal drift can be a strategy of some aquatic insects to avoid visual predation by other invertebrates and/or vertebrates, in Neotropical streams. We highlight the importance of our study, because it can be used for comparison in surveys of lotic environments that have been impacted by human activity (e.g. by dam construction), which can alter the water flow, and consequently the pattern of insect drift. https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/54931Lotic environment; entomological fauna; downstream movement; composition; ecological relationship. |
| spellingShingle | Ramiro de Campos Jonathan Rosa Janet Higuti Tayane Cristina Buggenhagen Ana Carolina de Deus Bueno Krawczyk Diel variation of aquatic insect drift in streams of Southern Brazil Acta Scientiarum: Biological Sciences Lotic environment; entomological fauna; downstream movement; composition; ecological relationship. |
| title | Diel variation of aquatic insect drift in streams of Southern Brazil |
| title_full | Diel variation of aquatic insect drift in streams of Southern Brazil |
| title_fullStr | Diel variation of aquatic insect drift in streams of Southern Brazil |
| title_full_unstemmed | Diel variation of aquatic insect drift in streams of Southern Brazil |
| title_short | Diel variation of aquatic insect drift in streams of Southern Brazil |
| title_sort | diel variation of aquatic insect drift in streams of southern brazil |
| topic | Lotic environment; entomological fauna; downstream movement; composition; ecological relationship. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/54931 |
| work_keys_str_mv | AT ramirodecampos dielvariationofaquaticinsectdriftinstreamsofsouthernbrazil AT jonathanrosa dielvariationofaquaticinsectdriftinstreamsofsouthernbrazil AT janethiguti dielvariationofaquaticinsectdriftinstreamsofsouthernbrazil AT tayanecristinabuggenhagen dielvariationofaquaticinsectdriftinstreamsofsouthernbrazil AT anacarolinadedeusbuenokrawczyk dielvariationofaquaticinsectdriftinstreamsofsouthernbrazil |