|
|
|
|
|
| Freitas,Matheus O.; Abilhoa,Vinicius; Spach,Henry L.; Minte-Vera,Carolina V.; Francini-Filho,Ronaldo B.; Kaufman,Les; Moura,Rodrigo L.. |
| ABSTRACT Red and black groupers are large-bodied opportunistic ambush predators commonly found in Southwestern Atlantic tropical reefs. We investigated the diet of both species in order to detail ontogenetic, spatial and temporal trends, and to assess the extent of overlap in resource use between these two sympatric predators on the Abrolhos Bank, Brazil. Decapods and fishes were the main food items of Epinephelus morio while fishes were the main prey of Mycteroperca bonaci. Both diets were significantly influenced by body size and habitat, but only smaller individuals of E. morio feed almost exclusively on crustaceans. While the two groupers rely on many of the same prey types, coexistence may be facilitated by E. morio feeding more heavily on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abrolhos Bank; Diet; Epinephelus morio; Feeding overlap; Mycteroperca bonaci. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200206 |
| |
|
|
| Medeiros,Paulo R.; Rosa,Ricardo S.; Francini-Filho,Ronaldo B.. |
| In recent years, many studies investigated how density-dependent factors, such as shortages in microhabitat and food availability influence the structure of reef fish assemblages. Most of what is currently known, however, comes from comparisons of isolated patch reefs and from correlations between fish abundance and one or few microhabitat variables. In addition, most studies were done in the Caribbean and Indo-Pacific regions, whereas the South Atlantic region has been, to date, understudied. The present study evaluated spatial and temporal variations in reef fish abundance and species richness in a continuous rocky reef and adjacent unconsolidated habitats in a Southwestern Atlantic reef, using underwater techniques to assess both fish numbers and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Complexity; Distribution; Reef fishes; Reef habitats; Sandy habitats. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400018 |
| |
|
|
| Francini-Filho,Ronaldo B.; Moura,Rodrigo L.; Ferreira,Camilo M.; Coni,Ericka O. C.. |
| Parrotfishes (Perciformes: Scaridae) represent a critical functional group on coral reefs because their intense herbivory activity helps in avoiding coral overgrowth by algae. Although feeding preferentially on algae and detritus, some parrotfish species also consume live corals, leading to detrimental effects that may offset the benefits of removing competitive seaweeds. Parrotfish species differ markedly in terms of jaw morphology, foraging activity and extent of substratum excavation, and are typically divided into three functional groups: browsers, scrapers and excavators. The recognition of species within each functional group helps to understand their relative effects in terms of bioerosion, coral fitness and survival, habitat alteration and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Foraging behavior; Bioerosion; Grazing scars; Scarus trispinosus; Sparisoma amplum. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200006 |
| |
|
|
| Pimentel,Caio R.; Rocha,Luiz A.; Shepherd,Bart; Phelps,Tyler A. Y.; Joyeux,Jean-Christophe; Martins,Agnaldo S.; Stein,Carlos Eduardo; Teixeira,João B.; Gasparini,João Luiz; Reis-Filho,José Amorim; Garla,Ricardo C.; Francini-Filho,Ronaldo B.; Delfino,Stephanie D. T.; Mello,Thayná J.; Giarrizzo,Tommaso; Pinheiro,Hudson T.. |
| Abstract Although several studies on the ichthyofauna of the Fernando de Noronha Archipelago have been carried out, its mesophotic fish diversity has never been surveyed before. Here we used SCUBA and technical rebreather diving, baited remote underwater videos and remotely operated vehicle to record shallow (≤ 30 m depth) and mesophotic (31 to 150 m depth) fishes. Nineteen fish species belonging to 14 families are reported here as new records, representing an increase of 8.2% in marine fish richness for the region, which now has a total of 250 species and 77 families. These new records include four potential new species and highlight the importance of surveying mesophotic ecosystems, even in well studied sites. Our results also emphasize the need for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: BRUVS; Marine Protected Area; Oceanic Island; Rebreather; Remotely Operated Vehicle. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000400210 |
| |
|
|
|
