Forest cover influences zooplanktonic communities in Amazonian streams

Gomes, Ana Caroline Alcântara Missias; Gomes, Leonardo Fernandes; Roitman, Isaac; Pereira, Hasley Rodrigo; Couto, Antônio Felipe; Costa, Elizabeth Maria Mamede da; Silva, Mariana Lessa Carneiro da; Jacobson, Tamiel Khan Baiocchi; Ribeiro, Rômulo José da Costa; Filho, Reinaldo José de Miranda; Avila, Mario; Vieira, Ludgero Cardoso Galli

doi:10.1007/s10452-020-09794-6

Cited by 10 publications

(3 citation statements)

References 72 publications

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“…Furthermore, zooplankton organisms present diverse trophic and spatial niches that make them more resilient to anthropogenic pressures and can favor them in more degraded environments [ 67 ], which could lead to a constant composition of functional guilds on a spatial scale. Gomes et al [ 14 ] analyzed zooplankton composition in the south Amazon in streams inserted in a gradient of forest cover and also did not find a relationship between spatial variables and the zooplankton community, reaffirming the need to further investigate other variables besides forest cover.…”

Section: Discussionmentioning

confidence: 99%

“…Deforestation, the input of nutrients, agrochemicals, and mining residuals are examples of threats to the species diversity in Amazon streams [ 7 , 8 ]. Changes in spatial and local physical-chemical variables of the land and water promoted by land use are followed by changes in the biological groups living in streams, including insects, fish [ 11 ], macrophytes [ 12 , 13 ], and zooplankton [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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How are zooplankton’s functional guilds influenced by land use in Amazon streams?

Bomfim,

Deosti,

Louback-Franco

et al. 2023

PLoS ONE

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Amazon streams present great biodiversity and offer several ecosystem services, but these systems are threatened by multiple land uses. The changes created by land use are expected to drive the composition of species, ultimately changing the trophic relationships of several biological groups, including zooplankton. We investigated if land use changes the composition of zooplankton functional guilds in Amazon streams and which are the local (physical-chemical) variables driving the zooplankton functional guilds in the land-use gradient. Zooplankton and physical-chemical variables were sampled in 17 water bodies in the municipality of Barcarena, Pará, Brazil in 2018 and 2019, five sampling sites were in the Pará River and 12 in streams. Forest cover (a proxy for land use) was determined through digital image processing and converted in percentage. Zooplankton species were classified into five functional guilds (filter, raptorial, scraper, suctor, and predator feeders). We recorded 98 zooplankton taxa and filters were the most abundant functional guild. The composition of zooplankton functional guilds did not change in the land use gradient. However, the distribution of zooplankton functional guilds in Amazon streams was determined by local environmental variables related to the feeding strategies. Scraper-feeders (cladocerans) were positively related to greater canopy cover, suctor-feeders and predator-feeders (both rotifers) were related to greater total phosphorus, whereas filter-feeders (rotifers, cladocerans, and copepods) and raptorial (copepods) were related to total suspended solids. This study brings new information about zooplankton in Amazon streams that are under-studied. The functional approach clarifies the patterns observed and reflects the trophic relationships in which the zooplankton community is involved in streams under a degree of land use, i.e., scraper-cladocerans can represent more preserved streams under greater canopy cover, whereas the other functional guilds were related to variables that can represent more altered streams.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

How are zooplankton’s functional guilds influenced by land use in Amazon streams?

Bomfim,

Deosti,

Louback-Franco

et al. 2023

PLoS ONE

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“…Hisonotus species feed on periphyton, with a diet composed of diatoms, Chlorophyceae, and organic matter (Casatti 2002, Teresa & Casatti 2012, and numerous studies have shown that the availability of periphyton in streams is dependent on riparian coverage and may influence the growth of loricariid fish species with this type of diet (Bojsen & Barriga 2002, Teresa & Casatti 2012, Fernandes et al 2013, Gomes et al 2020). Therefore, it is possible that the degradation of the vegetation cover has a negative influence on the ecological interactions of the streams studied here.…”

Section: Discussionmentioning

confidence: 99%

Phoretic association between Hisonotus chromodontus (Loricariidae: Hypoptopomatinae) and Ichthyocladius sp. (Diptera: Chironomidae) larvae in Amazonian streams

et al. 2021

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Larvae of non-biting midges in the family Chironomidae can be found in association with several species of fish in the family Loricariidae. In this study, we describe the first record of phoretic interaction between larvae of Ichthyocladius sp. and the fish Hisonotus chromodontus in streams in the Amazon basin. Between July 2010 and March 2019, fish were collected from three streams of the Teles Pires River basin in the state of Mato Grosso, Brazil. We investigated the attachment site of chironomid larvae on the body of fish and the frequency of attachment. A total of 1.241 specimens of H. chromodontus were collected, among which nine hosts were found carrying in the ventral region a single Ichthyocladius sp. specimen. All Ichthyocladius sp. were attached to a spicule of fish between the pectoral and pelvic fins, in which they were observed at the fourth developmental stage at the beginning of the cocoon construction (1.50 mm). In addition, a pre-pupa larva (2.60 mm) and an empty cocoon (2.50 mm) were reported. The Loanda stream had the highest occurrence of this type of association (of 12 fish examined, three had larvae). The other two streams reported a lower occurrence: the Baixada Morena stream had three fish associated with larvae amongst 1105 fish examined, whereas the Selma stream had three out of 124 fish infested by larvae. The occurrence of only one larva per host can be related to the small body area of the host fish (average standard length = 26.60 mm and average weight = 0.31 g). We observed that the larvae prefer fixation sites in the vicinity of the pectoral and pelvic fin of the fish, which is presumably associated with the fact that chironomids feed on algae and debris suspended by the movement of loricariids. These streams differ with respect to the presence of riparian forests, which may affect resource availability and thereby influence ecological interactions between the species.

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Fish endoparasite metacommunity in environments with different degrees of conservation in the western Brazilian Amazon

Virgilio,

de Melo,

da Silva Lima

et al. 2023

Parasitol Res

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Forest cover influences zooplanktonic communities in Amazonian streams

Cited by 10 publications

References 72 publications

How are zooplankton’s functional guilds influenced by land use in Amazon streams?

How are zooplankton’s functional guilds influenced by land use in Amazon streams?

Phoretic association between Hisonotus chromodontus (Loricariidae: Hypoptopomatinae) and Ichthyocladius sp. (Diptera: Chironomidae) larvae in Amazonian streams

Fish endoparasite metacommunity in environments with different degrees of conservation in the western Brazilian Amazon

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