Feeding habits of Thoracocharax stellatus (Characiformes: Gasteropelecidae) in the upper rio Tocantins, Brazil

Netto‐Ferreira, André L.; Albrecht, Martina; Nessimian, Jorge Luiz; Caramaschi, Érica Pellegrini

doi:10.1590/s1679-62252007000100009

Cited by 9 publications

(8 citation statements)

References 15 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These convergent species are deep bodied, top water fishes that feed primarily on terrestrial insects (Netto‐Ferreira et al. ; de Mérona et al. ).…”

Section: Discussionmentioning

confidence: 99%

Ancient and contingent body shape diversification in a hyperdiverse continental fish radiation

Burns

Sidlauskas

2019

Evolution

View full text Add to dashboard Cite

The characiform fishes of the Neotropics and Africa radiated remarkably in ecomorphology, but the macroevolutionary processes responsible for their biodiversity remain unexplored, and the degree to which their continental diversification parallels classic adaptive radiations remains untested. We reconstruct their diversification using a new fossil‐calibrated molecular phylogeny, dietary information, and geometric morphometrics. Though body shape diversified early in a manner consistent with an ancient continental adaptive radiation, trophic shifts did not always coincide with shape changes. With the notable exception of piscivores, lineages that converged in diet did not converge closely in body shape. Shifts in habitat or other variables likely influenced body shape evolution in addition to changes in diet, and the clade's history departs from many classic adaptive radiations in lakes or on islands, in which trophic convergence drives morphological convergence. The contrast between the Neotropical radiation's exhaustive exploration of morphospace and the more restrained diversification in Africa suggests a major role for contingency in characiform evolution, with the presence of cypriniform competitors in the Old World, but not the New, providing one possible explanation. Our results depict the clearest ecomorphological reconstruction to date for Characiformes and set the stage for studies further elucidating the processes underlying its diversification.

show abstract

“…These convergent species are deep bodied, top water fishes that feed primarily on terrestrial insects (Netto‐Ferreira et al. ; de Mérona et al. ).…”

Section: Discussionmentioning

confidence: 99%

Ancient and contingent body shape diversification in a hyperdiverse continental fish radiation

Burns

Sidlauskas

2019

Evolution

View full text Add to dashboard Cite

show abstract

“…Thoracocharax stellatus (Netto‐Ferreira et al . )]. Indeed, the surface film in the soda lakes made up of bacteria, insects and other organic matter blown on the water by wind has been suggested as a source of food for soda tilapia (Seegers & Tichy ).…”

Section: Discussionmentioning

confidence: 99%

Eco‐morphological differentiation in Lake Magadi tilapia, an extremophile cichlid fish living in hot, alkaline and hypersaline lakes in East Africa

et al. 2016

View full text Add to dashboard Cite

Ecological diversification through divergent selection is thought to be a major force during the process of adaptive radiations. However, the large sizes and complexity of most radiations such as those of the cichlids in the African Great Lakes make it impossible to infer the exact evolutionary history of any population divergence event. The genus Alcolapia, a small cichlid lineage endemic to Lakes Magadi and Natron in East Africa, exhibits phenotypes similar to some of those found in cichlids of the radiations of the African Great Lakes. The simplicity within Alcolapia makes it an excellent model system to investigate ecological diversification and speciation. We used an integrated approach including population genomics based on RAD-seq data, geometric morphometrics and stable isotope analyses to investigate the eco-morphological diversification of tilapia in Lake Magadi and its satellite lake Little Magadi. Additionally, we reconstructed the demographic history of the species using coalescent simulations based on the joint site frequency spectrum. The population in Little Magadi has a characteristically upturned mouth possibly an adaptation to feeding on prey from the water surface. Eco-morphological differences between populations within Lake Magadi are more subtle, but are consistent with known ecological differences between its lagoons such as high concentrations of nitrogen attributable to extensive guano deposits in Rest of Magadi relative to Fish Springs Lagoon. All populations diverged simultaneously only about 1100 generations ago. Differences in levels of gene flow between populations and the effective population sizes have likely resulted in the inferred heterogeneous patterns of genome-wide differentiation.

show abstract

“…Dentre os gêneros citados Thoracocharax apresenta duas espécies T. securis e T. stellatus, onde a segunda espécie possui hábito alimentar insetívoro (Netto-Ferreira et al, 2007). A espécie T. stellatus possui grande importância econômica, pois é uma das 725 espécies de peixes nativas permitidas para explotação com finalidade ornamental ou de aquariofilia em ecossistemas aquáticos da Amazônia (MPA, 2012).…”

unclassified

Ocorrência de Myxobolus sp. (MYXOZOA) em Thoracocharax stellatus (KNER, 1858) (CHARACIFORMES) em um Igarapé da Floresta Amazônica, Pará, Brasil

Araújo¹,

Corrêa²,

Sousa³

et al. 2018

Braz. J. Aquat. Sci. Technol.

View full text Add to dashboard Cite

Thoracocharax stellatus (KNER, 1858), belonging to the Gasteropelecidae family, is represented by small fish. The fish were captured using dragnets in an area adjacent to the Guamá River, with an average total length of 4.2±0.8 cm and total average weight of 0.9±0.3 g. Fragments of gills were collected and analyzed fresh under a light microscope, where the presence of cysts full of spores of Myxobolus sp. with unequal polar capsules was observed. This study reports the first record of Myxobolus sp. found in T. stellatus coming from a tropical river in the State of Amazonia, in which the morphological characteristics differ from those of the other species when compared.

show abstract

Feeding habits of Thoracocharax stellatus (Characiformes: Gasteropelecidae) in the upper rio Tocantins, Brazil

Cited by 9 publications

References 15 publications

Ancient and contingent body shape diversification in a hyperdiverse continental fish radiation

Ancient and contingent body shape diversification in a hyperdiverse continental fish radiation

Eco‐morphological differentiation in Lake Magadi tilapia, an extremophile cichlid fish living in hot, alkaline and hypersaline lakes in East Africa

Ocorrência de Myxobolus sp. (MYXOZOA) em Thoracocharax stellatus (KNER, 1858) (CHARACIFORMES) em um Igarapé da Floresta Amazônica, Pará, Brasil

Contact Info

Product

Resources

About