Influence of connectivity on Cladocera diversity in oxbow lakes in the Taquari River floodplain (MS, Brazil)

Güntzel, Adriana Maria; Panarelli, Eliana Aparecida; Silva, William Marcos da; Roche, Kennedy F.

doi:10.4322/actalb.02201012

Cited by 25 publications

(27 citation statements)

References 16 publications

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“…Thus, some items, such as seeds and zooplankton eggs, may not be successfully digested, and may accumulate in the gut, while especially soft-bodied prey items, prone to rapid digestion, may be The great abundance of Cladocera associated with macrophytes could explain the importance of these organisms for the fish feeding in the present study (Lansac-Tôha et al, 2003;Güntzel et al, 2010). A similar conclusion was formed by Alvim et al (1998) for Holoshesthes heterodon feeding in macrophyte banks of a reservoir.…”

Section: Methodsmentioning

confidence: 88%

“…For the three sampling periods of the present study, cladoceran abundance was highest in August, with Chydorus eurynotus the most numerous species (Güntzel et al, 2010). The cladoceran communites underestimated in gut contents (Zavala-Camin, 1996;Coutinho et al, 2000).…”

Section: Methodsmentioning

confidence: 96%

“…Cladocerans are important components of the invertebrate communities of aquatic macrophytes, presenting elevated richness and abundance (Wisniewski et al, 2000;Güntzel et al, 2010), being an important source of food for various vertebrates and invertebrates (De Bernardi et al, 1987).…”

Section: Introductionmentioning

confidence: 99%

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Cladocerans from gut contents of fishes associated to macrophytes from Taquari River Basin, MS, Brazil

et al. 2012

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Aim:The aim of this study was to identify the cladocerans species from the gut contents of fishes sampled in an oxbow lake from Taquari River Basin, MS, with the specific view of investigating the importance of these crustaceans in the fishes diets; Methods: Sampling was carried out in April and August of 2005 (dry season) and January of 2006 (wet season). The fish were captured with a sieve. In the laboratory, individuals were identified and stomachs were removed and weighed. The stomach contents were identified, and a Feeding Index calculated; Results: The items most consumed by fishes were filamentous algae, Cladocera and detritus. The Cladocera were especially important in the August and January samples, and consisted primarily of Chydoridae; cladocerans were most consumed by species of Serrapinnus and by Mesonauta festivus. Fish fed more in April, with decreases occurring in stomach fullness on the other two sampling dates. Conclusions: Cladocerans associated with macrophytes may be an important food source for small fish individuals in marginal lakes from Taquari River Basin. The relative importance of the Chydoridae in the guts may have been due to the high relative abundance and species richness of this group in the environment. A short discussion on fish feeding habits was included in the text.Keywords: microcrustaceans, Chydoridae, ichthyofauna, floodplain, fish feeding.Resumo: Objetivo: Este estudo teve por objetivo identificar as espécies de cladóceros presentes no conteúdo estomacal de peixes amostrados em uma lagoa marginal da Bacia do Rio Taquari, MS, visando avaliar a importância destes crustáceos na dieta dos peixes; Métodos: A amostragem foi realizada em abril e agosto de 2005 (estação seca) e janeiro de 2006 (estação chuvosa). Os peixes foram capturados com um peneirão. Em laboratório, os indivíduos foram identificados até o nível de espécie e os estômagos removidos e pesados. O conteúdo estomacal foi identificado e um Índice Alimentar calculado. Resultados: Os itens mais consumidos pelos peixes foram algas filamentosas, Cladocera e detritos. Os Cladocera foram especialmente importantes em agosto e janeiro e consistiram principalmente de espécies de Chydoridae; os cladóceros foram mais consumidos por espécies de peixes do gênero Serrapinnus e por Mesonauta festivus. Conclusões: Cladóceros associados a macrófitas podem ser uma importante fonte de alimento para peixes de pequeno porte em lagoas marginais da Bacia do Rio Taquari. A importância relativa de Chydoridae nos estômagos deve ter sido devida à elevada abundância relativa e riqueza de espécies deste grupo de cladóceros no ambiente. Uma pequena discussão sobre os hábitos alimentares das espécies de peixes encontradas na lagoa foi incluída no texto.Palavras-chave: microcrustáceos, Chydoridae, ictiofauna, planície de inundação, alimentação de peixes.

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Section: Methodsmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 96%

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Cladocerans from gut contents of fishes associated to macrophytes from Taquari River Basin, MS, Brazil

et al. 2012

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“…Alona dentifera (Sars, 1901): Sinev et al 2004: 101, 103–104, figures 1–39; Güntzel et al 2010: 95, table 1; Sousa and Elmoor-Loureiro 2012: 356, table 2; Debastiani-Júnior et al 2015: 24, table 2.…”

Section: Taxonomymentioning

confidence: 99%

Position of the dentifera-group in the Coronatella-branch and its relocation to a new genus: Magnospina gen. n. (Crustacea, Chydoridae, Aloninae)

Sousa¹,

Elmoor-Loureiro²,

Santos³

2016

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Magnospina gen. n. was created to relocate species of the dentifera-group from Alona sensu lato (Crustacea: Cladocera) and include Magnospina dentifera comb. n. and Magnospina siamensis comb. n. The synapomorphies of the Magnospina gen. n. are (1) basal spines longer than 2/3 of the postabdominal claw, (2) presence of 1–4 large denticles, broad at their bases, protruding downwards, without setules between them. Morphological traits such as habitus, rostrum and postabdomen shape, armature of IDL setae, number of setae on the exopod of limb III are also important in the distinction between Magnospina gen. n. and other genera from the Coronatella-branch. The morphology of Magnospina dentifera comb. n. male confirms the closer relationship with the clade composed by the elgans-group from Alona sensu lato, Ovalona and Leberis, but the external morphology, morphology of the postabdominal claw, basal spine and setae 2–3 of IDL support their separation from any of the group cited. It is concluded that the Coronatella-lineage of Aloninae is composed of the genera Coronatella, Anthalona, Karualona, Bergamina, Extremalona, Ovalona, Celsinotum, Leberis and Magnospina gen. n. The elegans-group from Alona sensu lato also belongs to Coronatella-lineage, but still need formal allocation.

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“…Rossa et al 2001, Lima et al 2003, Hollwedel et al 2003, Serafim et al 2003, Choueri et al 2005, Palazzo et al 2008, Lansac-Tôha et al 2009, Güntzel et al 2010, which are areas covering large tracts. This The wetlands sampled showed high diversity of macrophytes with about 25 families recorded: Apiaceae, Asteraceae, Characeae, Cornaceae, Cyperaceae, Droseraceae, Euriocaulaceae, Fabaceae, Gentianaceae, Lamiaceae, Lentibulariaceae, Lycopodiaceae, Lythraceae Mayacaceae, Melastomataceae, Menyanthaceae, Ochnaceae, Onagraceae, Plantaginaceae, Poaceae, Polygalaceae, Rubiaceae, Sterculiaceae, Verbenaceae and Xyridaceae (unpublished data).…”

Section: Introductionmentioning

confidence: 99%

Cladocerans (Crustacea, Anomopoda and Ctenopoda) from Cerrado of Central Brazil: Inventory of phytophilous community in natural wetlands

2013

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Abstract:The aim of this study was to inventory the cladoceran fauna in wetlands located in two large areas that protect fragments of Cerrado. Located in the Brasília National Park-DF and Campo de Instrução de Formosa-GO, these wetlands are formed by upwelling groundwater, with extensive vegetation cover. We found 24 species in the Brasília National Park and 30 in the Campo de Instrução de Formosa. The observed richness reached approximately 80% of the estimated values for both protected areas. Moreover, the community of cladocerans in the kind of environment studied appears to be influenced by depth, with higher values of richness and similarity in wetlands of higher average depths. However, shallow wetlands contributed to the total richness with exclusive species, which shows the importance of these habitats for species richness.

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Influence of connectivity on Cladocera diversity in oxbow lakes in the Taquari River floodplain (MS, Brazil)

Cited by 25 publications

References 16 publications

Cladocerans from gut contents of fishes associated to macrophytes from Taquari River Basin, MS, Brazil

Cladocerans from gut contents of fishes associated to macrophytes from Taquari River Basin, MS, Brazil

Position of the dentifera-group in the Coronatella-branch and its relocation to a new genus: Magnospina gen. n. (Crustacea, Chydoridae, Aloninae)

Cladocerans (Crustacea, Anomopoda and Ctenopoda) from Cerrado of Central Brazil: Inventory of phytophilous community in natural wetlands

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