Alimentação de Ctenogobius shufeldti (Jordan e Eigenmann, 1887) (Teleostei, Gobiidae) na Baía de Guaratuba, Atlântico oeste subtropical doi:10.5007/2175-7925.2011v24n1p37

Zanlorenzi, Diego; Chaves, Paulo de Tarso

doi:10.5007/2175-7925.2011v24n1p37

Cited by 7 publications

(6 citation statements)

References 3 publications

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“…These results described C. shufeldti in the Paranaguá Bay estuarine complex as typical generalized, omnivorous benthic feeders, exhibiting a broad feeding niche. These results are consistent with those of Zanlorenzi & Chaves (2011), who described the same food categories as the most important ones in the Guaratuba Bay estuary (just south of Paranaguá Bay). Results of this study are also partially in agreement with those of Corrêa & Uieda (2007), who identified ostracods and tanaids as the main prey in the Rio da Fazenda Estuary (northern coast of São Paulo).…”

Section: Discussionsupporting

confidence: 92%

Feeding ecology of the American freshwater goby Ctenogobius shufeldti (Gobiidae, Perciformes) in a sub‐tropical estuary

Contente

Stefanoni

Spach

2012

Journal of Fish Biology

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The feeding ecology of the American freshwater goby Ctenogobius shufeldti in a low salinity salt-marsh habitat in the Paranaguá Bay estuarine complex (Brazil) was assessed through the gut analysis of 632 individuals. The effects of a set of abiotic factors (type of sediment, salinity, temperature and estuarine reach), season and body size on dietary composition were analysed. Seasonal and size-related changes in feeding strategy, feeding intensity and trophic level were assessed. The effects of gape and body size on prey size use were also analysed. The results showed that C. shufeldti is a typical omnivorous, generalized benthic predator of low trophic levels throughout the seasons and size classes, feeding on 56 dietary items; tanaids, chlorophyte algae, ostracods, gastropods, detritus and benthic diatoms made up the bulk of its diet. The tanaid Kalliapseudes schubarti was the main prey item in both numerical and volumetric terms. The gut fullness was persistently high across the seasons. As expected for a typical generalized, opportunistic omnivorous feeder: (1) seasonal and spatial-temporal variability of abiotic factors had a significant effect on diet structure, (2) season accounted for most of the dietary variation and (3) diet composition and the size of prey consumed did not vary across the size classes.

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Section: Discussionsupporting

confidence: 92%

Feeding ecology of the American freshwater goby Ctenogobius shufeldti (Gobiidae, Perciformes) in a sub‐tropical estuary

Contente

Stefanoni

Spach

2012

Journal of Fish Biology

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“…(); 3, Sergipense et al. (); 4, Froese & Pauly (); 5, Zanlorenzi & Chaves (); 6, Chaves & Vendel (); 7, Guedes et al. (); 8, Vasconcelos Filho et al.…”

Section: Resultsmentioning

confidence: 99%

Mangrove habitat use by fishes in Southeastern Brazil: are there temporal changes in the structure of the community?

2016

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We compared fish community structure in Guaratiba Mangrove, SE Brazil, among three seasons of the hydrological cycle [(i) spring, increasing temperature and rainfall, decreasing salinity; (ii) summer/early fall, high temperature and rainfall, intermediate salinity; (iii) late fall/winter, low temperature and rainfall, high salinity] and between the years 2002–2003 and 2008–2009. The aim was to test the hypothesis that the fish community structure changes seasonally, associated with seasonal changes in environmental conditions, and that changes occurred between the two yearly periods because of increased anthropogenic activities. The sampling protocol for the two surveys was identical. A total of 63 species was recorded, with 38 species occurring in 2002–2003, and 53 species in 2008–2009. The main changes in the mangrove's fish assemblage between 2002–2003 and 2008–2009 were (i) an increase in species richness, fish density and total biomass; and (ii) an increase in the zoobenthivorous species of gerreids Eucinostomus argenteus, Diapterus rhombeus and Ulaema lefroyi, and a decrease in the planktivorous clupeid Harengula clupeola. Other abundant species, such as the opportunistic atherinopsid. Atherinella brasiliensis, the detritivorous mullet Mugil liza and the zoobenthivorous pufferfish Sphoeroides testudineus did not differ in abundance between the two yearly periods. Ten species occurred only in 2002–2003, and 23 species only in 2008–2009, indicating significant changes in community structure over the 6‐year period. Seasonal changes in community structure were more conspicuous in 2008–2009, when species abundance and richness were greatest. The highest fish abundance was recorded in spring and in summer/early fall, and the lowest in late fall/winter. The increased abundance and richness over time may be at least partially attributable to protection policies because of the effective implementation of a biological reserve in the area.

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“…These items were the smallest found in all guts, therefore proportionally more appropriate to the mouth size of juveniles. Furthermore, these items are preyed by other small cryptic fish in Guaratuba Bay, such as Ctenogobius shufeldti , which diet is based on ostracods (Zanlorenzi & Chaves, ). In tide pools, juveniles of diverse cryptic species also fed on ostracods and other small crustaceans (Pimentel et al, ).…”

Section: Discussionmentioning

confidence: 99%

Seasonal and ontogenetic changes in the diet of blennyHypleurochilus fissicornis: An estuarine mariculture as a model of the reef environment

Possamai

Fávaro

2019

Marine Ecology

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The Blenniidae family is characterised by small cryptic fish. Due to the small size of these specimens, the sampling is very difficult and information about the ecological role of these fishes is vague. However, mariculture adds reef encrusting organisms that attract blennies, which makes sampling easier. Furthermore, recognising species feeding is critical to understand biological communities. In this study, we evaluated the diet of blenny Hypleurochilus fissicornis in a mariculture, to clarify its influence on the benthic fauna and its interactions with the reef environment. We evaluated the seasonal variation (four seasons chosen by the abiotic variables) and the ontogenic changes (three classes defined by L50 of the species: juvenile, transition and adult) in the diet. Hydrozoans were the main prey, but H. fissicornis fed on a variety of other benthic organisms, exhibiting opportunistic habits. The diet of H. fissicornis was complemented by Amphipods in autumn, Ostracods in winter, and bivalves in summer. Juveniles fed more on Ostracods than the other classes, while the transition class fed mainly on Hydrozoans and a variety of rare items, and adults consumed almost exclusively Hydrozoans and some Cirripedia. Therefore, we conclude that H. fissicornis is an opportunistic feeder and may influence benthic organisms. The establishment of fouling organisms on the mariculture structures allows the use of this area by the blenny, since they promote its feeding base.

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Alimentação de Ctenogobius shufeldti (Jordan e Eigenmann, 1887) (Teleostei, Gobiidae) na Baía de Guaratuba, Atlântico oeste subtropical doi:10.5007/2175-7925.2011v24n1p37

Cited by 7 publications

References 3 publications

Feeding ecology of the American freshwater goby Ctenogobius shufeldti (Gobiidae, Perciformes) in a sub‐tropical estuary

Feeding ecology of the American freshwater goby Ctenogobius shufeldti (Gobiidae, Perciformes) in a sub‐tropical estuary

Mangrove habitat use by fishes in Southeastern Brazil: are there temporal changes in the structure of the community?

Seasonal and ontogenetic changes in the diet of blennyHypleurochilus fissicornis: An estuarine mariculture as a model of the reef environment

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