Feeding ecology and resource sharing patterns between<i>Stellifer rastrifer</i>(Jordan, 1889) and<i>S. brasiliensis</i>(Schultz, 1945) (Perciformes: Sciaenidae) along the coasts of Paraná and Santa Catarina, Brazil

Frehse, Fabrício A.; Valduga, Marcos Ostrowski; Corrêa, Marco Fábio Maia; Pinheiro, Pedro Carlos; Vitule, Jean R. S.

doi:10.1111/jai.12768

Cited by 10 publications

(5 citation statements)

References 45 publications

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“…Ross 1986, Lowe-McConnell 1987, Esteves & Aranha 1999, Leitão et al 2015. In scenarios of high abundance and diversity of resources, coexistence can occur without negative interaction between species (Pianka 1973, Hurlbert 1978) and feeding overlap does not necessarily imply the existence of direct competition (Lawlor 1980, Frehse et al 2015. It is expected that when close related species coexist, niche breadth is narrowed and feeding specialization reduce competition chance (MacArthur 1972, Young et al 2010.…”

Section: Introductionmentioning

confidence: 99%

Feeding strategy and morphology as indicators of habitat use and coexistence of two loricariid fishes from a Brazilian coastal stream

et al. 2020

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We aimed to evaluate the relationship between form and function of two Loricariidae species (Hypostomus punctatus and Parotocinclus maculicauda) from a Neotropical coastal stream. We performed morphological-dietary analysis and discussed their coexistence strategies, as well. We hypothesized that both species use similar food resources according to their morphology but differences in habitat use facilitate their coexistence. In order to test this hypothesis, morphology, diet and habitat use were analyzed for both species. Trophic variance and the Pianka Niche Overlap index were calculated to explore the differences in trophic niche. Correlations between species abundance and water flow were applied to test habitat use. Principal Component Analysis and one Permutational Multivariate Analysis of Variance were applied to test differences between morphology and diet of both species. Morphological-dietary relationships were tested with Mantel test correlations. Total abundance of H. punctatus was higher in the stream channel with higher water flow. The dominant food items were sediment and organic matter for both species, and high trophic niche overlap was revealed. Additionally, morphology did not explain feeding habits for both species. Morphological characteristics were significantly different, especially for intestine length, relative area of the dorsal fin, ventral flattening and mouth attributes. The study site was rich in sand sediment, mud, and clay that are not considered good substrates to the establishment and growing of periphyton, which is an important trophic resource to Loricariidae species. Here, low consumption of periphyton can provide a possible explanation for the feeding similarity and the weak morphological-dietary relationships for both species. Thus, the environmental conditions can be more important for diet composition when compared to the similar and specialized morphology of loricariids.

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Section: Introductionmentioning

confidence: 99%

Feeding strategy and morphology as indicators of habitat use and coexistence of two loricariid fishes from a Brazilian coastal stream

et al. 2020

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“…The pressure of similar diet in three out of four seasons was reduced by the interspecific diet difference, which was found along the ontogeny. This phenomenon has already been recorded in fish by Frehse et al (2015) and described as part of a strategy to reduce competition and allow coexistence among related species.…”

Section: Discussionmentioning

confidence: 76%

Diet and resource sharing by two Pimelodidae species in a Southeastern Brazilian reservoir

et al. 2019

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Fish can vary their diet and feeding dynamics according to biotic and abiotic factors. There is insufficient knowledge regarding these factors in reservoirs, which limits the management of these areas. The aim of this study was to determine the diet of two related and most collected fish species, verify the influence of biotic and abiotic factors on their diet, and also verify the existence of resource sharing by them in an upstream Brazilian reservoir. Fish abundance in the reservoir was calculated and data were provided by 176 specimens of Iheringichthys labrosus (Lütken, 1874) and 255 specimens of Pimelodus maculatus Lacépède, 1803 collected in Camargos reservoir, MG, Brazil. Stomach contents were analysed through the frequency of occurrence and volumetric methods. PERMANOVA analysis was done to evaluate the influence of biotic (Species and Size class) and abiotic factors (Season and Site) on the diets. The Alimentary Index (AI) and feeding overlap Index (Pianka) were also estimated. A NMDS analysis was conducted to visualize the food categories responsible for interspecific difference. The ingested items were grouped into 18 categories, of which 17 were found in both species. Feeding resources were significantly related to the biotic (Species: Pseudo F = 2.583, P = 0.001; Size Class: Pseudo F = 1.646, P = 0.001) and abiotic (Season: Pseudo F = 2.458, P = 0.006) factors. I. labrosus showed an invertivorous diet while P. maculatus an omnivorous diet and both species were not exclusively benthophagus as typically reported. Food overlap occurred intraspecifically and interspecifically (Pianka 0.61 to 0.97 and 0.61 to 0.66, respectively) and overlap also occurred in three of the four analysed seasons (Pianka 0.66 to 0.91). The diet overlap found between two of the most fished species and the low fish productivity may indicate the limitation of resources in this reservoir and should be considered for management of this area.

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“…gracilicirrhus tended to specialize on Caprella . The combined influence of factors to search and acquire feeding resources, such as swimming capacity, and morphological features that determine prey selection (e.g., mouth size, stomach capacity) and visual capacity for prey detection, have great importance for the coexistence of species (Frehse et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…They have in common an elongate body, small and sub‐terminal mouth, presence of barbels and pores in the head, and a long lateral line. These characteristics could lead to the use of similar feeding resources in the outer bay zone and an overlap in the trophic niche (Frehse, Valduga, Corrêa, Pinheiro, & Vitule, ; Pombo et al., ). However, M. furnieri reaches a maximum size of ca.…”

Section: Introductionmentioning

confidence: 99%

Trophic ecology of two syntopic sciaenid species (Micropogonias furnieri(Desmarest, 1823) andCtenosciaena gracilicirrhus) (Metzelaar, 1919) in a tropical bay in south-eastern Brazil

et al. 2017

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Summary Analyzed were the diets of two closely related species of Sciaenidae (Micropogonias furnieri and Ctenosciena gracilicirrhus) coexisting in high abundance in the outer zone of Sepetiba Bay. Their sizes and seasonal niche dimensions were also analysed. The tested hypothesis was that these two abundant species do not overlap in the trophic niche despite occurring in the same area and having similar sizes and body shapes and where an intraspecific overlap is likely to occur. The stomach contents of 198 M. furnieri specimens (85–280 mm total length) and 198 C. gracilicirrhus (49–131 mm total length) were examined. Quarterly diurnal fish samplings were performed using bottom trawls between winter 2012 and autumn 2013. In each season, three replicate tows were taken against the current during 20 min at the bottom with a towing speed of circa 4.5 km/hr, covering a distance of approximately 1,500 m. The trawl had an 8 m headline, 11 m ground rope, 25 mm stretched mesh and 12 mm mesh cod‐end liner. Significant differences were detected in the diet between the two species (Pseudo‐F = 5.16; p = .001) and among size classes (Pseudo‐F = 2.23; p = .001), but not among seasons (Pseudo‐F = 0.36; p = .920), according to PERMANOVA. Micropogonias furnieri fed mainly on Polychaeta and Caprella, whereas C. gracilicirrhus fed preferably on Caprella. Both species tended to specialize as they grew in size, with M. furnieri preferring Polychaeta, and C. gracilicirrhus specializing in Caprella. As expected, a high intraspecific niche overlap was observed among the size classes within each species, but not at an interspecific level and with the two syntopic species using different feeding resources.

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Feeding ecology and resource sharing patterns betweenStellifer rastrifer(Jordan, 1889) andS. brasiliensis(Schultz, 1945) (Perciformes: Sciaenidae) along the coasts of Paraná and Santa Catarina, Brazil

Cited by 10 publications

References 45 publications

Feeding strategy and morphology as indicators of habitat use and coexistence of two loricariid fishes from a Brazilian coastal stream

Feeding strategy and morphology as indicators of habitat use and coexistence of two loricariid fishes from a Brazilian coastal stream

Diet and resource sharing by two Pimelodidae species in a Southeastern Brazilian reservoir

Trophic ecology of two syntopic sciaenid species (Micropogonias furnieri(Desmarest, 1823) andCtenosciaena gracilicirrhus) (Metzelaar, 1919) in a tropical bay in south-eastern Brazil

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