|
|
|
| Registros recuperados: 18 | |
|
| |
|
|
| Nunes,José de Anchieta C. C.; Loiola,Miguel; Miranda,Ricardo J.; Sampaio,Cláudio L. S.; Barros,Francisco. |
| ABSTRACT Fishing pressure affects the behavior of reef fish, especially of fishery-targeted species. In this context, it is critical to understand if fish behavior is preserved in no-take areas (NTAs), which are considered the best instrument for the recovery of fish stocks. Comparing the flight initiation distances (FIDs) of fish inhabiting multiple-use areas (MUAs), where fishing is allowed (including spearfishing), and NTAs is a useful approach to test whether NTAs can be effective as fish refuges. Here, we compared whether the FIDs of two target (Sparisoma axillare and Scarus trispinosus ) and one non-target (Halichoeres poeyi ) labrids are greater in the MUAs than in the NTAs. We also investigated whether group size (GS) and body size (BS) exert any... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parrotfish; Reef fish behavior; Refuges; Southwest Atlantic; Spearfishing impacts. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000400208 |
| |
|
|
| Branco,Joaquim Olinto; Freitas Júnior,Felipe; Christoffersen,Martin Lindsey. |
| Marine communities in tropical regions contain a great diversity of species that play key roles in ecological processes. The observed bycatch fauna in artisanal fishing for the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) in the southwest Atlantic exceeds the quantity of commercial shrimp captured. This bycatch has not been previously inventoried extensively in Brazil, particularly in the State of Santa Catarina, where small-scale shrimp fisheries is a traditional activity and dominates the local fishing economy. Six municipalities were sampled three times a month, from 1996 to 2011, yielding 216 species belonging to the bycatch (7 cnidarians, 22 mollusks, 42 crustaceans, 11 echinoderms, and 134 fishes). Bycatch management is a pressing aspect of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bycatch fauna; Marine diversity; Southwest Atlantic; Threatened species; Xiphopenaeus kroyeri. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200106 |
| |
|
|
| Guerstein,G. Raquel; Junciel,Gabriela L.; Guler,M.Verónica; Daners,Gloria. |
| Upper Cretaceous and Cenozoic deposits from the Colorado and Austral basins, Argentina and the Punta del Este Basin, Uruguay contain diverse organic-walled dinoflagellate cysts, including Diconodinium lurense sp. nov. which occurs in the late Maastrichtian and Danian throughout the basins. The new species is characterized by an autophragm that is densely covered by short spines and by relatively long apical and antapical horns, and by a variable Ia to IPa archeopyle. On our evidence, the stratigraphical range of Diconodinium lurense sp. nov. is latest Maastrichtian to Danian, and is thus a useful biostratigraphical marker for the Cretaceous-Palaeogene transition in the southwest Atlantic basins. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biostratigraphy; Dinoflagellate cysts; Late Maastrichtian-Danian; Southwest Atlantic. |
| Ano: 2005 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142005000200005 |
| |
|
|
| Barbini,Santiago A.; Lucifora,Luis O.. |
| ABSTRACT The eyespot skate, Atlantoraja cyclophora, is an endemic species from the southwestern Atlantic, occurring from Rio de Janeiro, Brazil, to northern Patagonia, Argentina. The feeding habits of this species, from off Uruguay and north Argentina, were evaluated using a multiple hypothesis modelling approach. In general, the diet was composed mainly of decapod crustaceans, followed by teleost fishes. Molluscs, mysidaceans, amphipods, isopods, lancelets and elasmobranchs were consumed in lower proportion. The consumption of shrimps drecreased with increasing body size of A. cyclophora. On the other hand, the consumption of teleosts increased with body size. Mature individuals preyed more heavily on crabs than immature individuals. Teleosts were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chondrichthyes; Ontogenetic shifts; Predation; Southwest Atlantic. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000300214 |
| |
|
| |
|
|
| Roman,Jorge M.; Chierichetti,Melisa A.; Barbini,Santiago A.; Scenna,Lorena B.. |
| ABSTRACT The feeding habits of Callorhinchus callorynchus were investigated in coastal waters off northern Argentina. The effect of body size, seasons and regions was evaluated on female diet composition using a multiple-hypothesis modelling approach. Callorhinchus callorynchus fed mainly on bivalves (55.61% PSIRI), followed by brachyuran crabs (10.62% PSIRI) and isopods (10.13% PSIRI). Callorhinchus callorynchus females showed changes in the diet composition with increasing body size and also between seasons and regions. Further, this species is able to consume larger bivalves as it grows. Trophic level was 3.15, characterizing it as a secondary consumer. We conclude that C. callorynchus showed a behavior of crushing hard prey, mainly on bivalves,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chondrichthyes; Diet; Ontogenetic shifts; Southwest Atlantic; Trophic level. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100202 |
| |
|
|
| Spier,Daphne; Gerum,Humberto Luiz Nadolny; Bornatowski,Hugo; Contente,Riguel; Mattos,Natalia A S; Vilar,Ciro C; Spach,Henry Louis. |
| Abstract Comprehensive species checklists are essential to effectively implementing preservation and recovery measures, and should assess conservation status, vulnerability degree and anthropogenic threats. This checklist was compiled from fish species recorded in surveys conducted over the last 30 years in the shallow inner continental shelf in the State of Paraná, Brazil. Information on biogeography, conservation status, economic importance and degree of species’ vulnerability are provided. A total of 272 fish species were recorded, spanning 25 orders and 88 families. The most speciose family was Sciaenidae (25 species), followed by Carangidae (23), Engraulidae (10), Carcharhinidae (9), Epinephelidae (9) and Paralichthyidae (9). Most species occurring in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish assemblage; Species list; Southwest Atlantic; Vulnerability. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200201 |
| |
|
|
| Ribeiro,Gisela Costa; Cattani,André Pereira; Hostim-Silva,Mauricio; Clezar,Leandro; Passos,Ana Carolina dos; Soeth,Marcelo; Cardoso,Olímpio Rafael; Spach,Henry Louis. |
| Abstract: This study aimed to present a checklist of marine fishes from coastal environments of the Island of Santa Catarina, including comments on the zoogeographic affinities, conservation status of each species, and functional groups. A total of 169 fish species belonging to 30 orders and 58 families were recorded. The most speciose families were Sciaenidae, Carangidae and, Engraulidae, representing 26,62% of the recorded species. Anchoa was the richest genus, followed by Sphoeroides and Cynoscion. Most of the species have their distribution limited to the western Atlantic, and two groups of fish were distinguished according to the species distributions: 1) species occurring in the Caribbean and in the Brazilian Province; and 2) Transatlantic species.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Species list; Southwest Atlantic. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000300304 |
| |
|
|
| Lopes,Rubens M.. |
| Marine zooplankton research in Brazil has been primarily descriptive, with most studies focusing on community structure analysis and related issues. The composition and spatial distribution of several taxonomic groups are currently well known, although less-abundant and small-sized taxa as well as initial stages of almost all species have received little attention. Some numerically important taxa such as heterotrophic protists, ctenophores, acoel turbellarians and ostracods remain virtually unstudied. Large sectors of the continental shelf have not been sampled in detail, particularly those areas influenced by the North Brazil Current (5ºN-15ºS). Zooplankton abundance and biomass in offshore waters have seldom been quantified, and information on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marine zooplankton; Ecology; Taxonomy; Southwest Atlantic. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000300002 |
| |
|
| |
|
|
| Anker,Arthur; Mendonça,Joel B.; Pachelle,Paulo P. G.; Tavares,Marcos. |
| Two species of the alpheid shrimp genus Salmoneus Holthuis, 1955, are reported from shallow waters of São Sebastião (SP), southeastern Brazil. Salmoneus depressus Anker, 2011 is recorded for the first time in Brazil and the southwestern Atlantic; this species was previously known only from the Caribbean region. Salmoneus ortmanni (Rankin, 1898) is recorded for the first time in southern Brazil (23°S), being previously known in Brazilian waters from a single confirmed record from Atol das Rocas (03°S), with older records referring to Salmoneus carvachoi Anker, 2007. A hitherto unknown morphological variation in S. depressus is discussed and illustrated. Both species are shown in colour to facilitate their identification in the field. A key to the southern... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alpheidae; Salmoneus; New records; Artificial reef substrate; Southwest Atlantic. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013003300001 |
| |
|
| |
|
| |
|
|
| Mourato,Bruno L.; Carvalho,Felipe; Musyl,Michael; Amorim,Alberto; Pacheco,Jose C.; Hazin,Humberto; Hazin,Fábio. |
| Pop-up satellite archival tags (PSATs) were deployed on four sailfish, Istiophorus platypterus, in the coastal waters of Rio de Janeiro State in southeast Brazil during January and February of 2009 (sailfish I and II) and between November 2010 and January 2011 (sailfish III and IV). The total number of days monitored (i.e., time that the tags remained attached) were 12 (sailfish I), 51 (sailfish II), 16 (sailfish III) and 43 days (sailfish IV). The results indicate a clear pattern of vertical habitat utilization with the majority of the time spent concentrated near the uniform sea surface layer occupying a relatively narrow temperature range. Despite the clear preference for epipelagic surface waters, sailfish regularly undertook vertical excursions into... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Delta SST; Horizontal movements; Pop-up satellite archival tags (PSATs); Sailfish; Southwest Atlantic; Vertical habitat. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400861 |
| |
|
| |
|
|
| Savigny,Christian; Caille,Guillermo; González,Raúl; Guillermo,Harris. |
| As part of a survey of marine birds in the Southwest Atlantic, a field trip was made to Golfo San Matías, on the coast of southern Argentina, to accomplish a first evaluation of seabirds associated with the Argentine squid Illex argentinus fishery by jiggers. Between 7-21 July 2003, 20 species of seabirds belonging to 6 families were observed. On July 21, at 41°17'S, 64°36'W, a Trinidade Petrel (Pterodroma arminjoniana) was observed along with 100 Thalassarche melanophris, 200 Larus dominicanus, 10 Macronectes giganteus, 20 Oceanites oceanicus and 10 Procellaria aequinoctialis. We discuss some aspects of field identification, taxonomy and conservation. The data and circumstances of our record allows us to speculate that it is possible that vagrant birds,... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: First record; Patagonia; Pterodroma arminjoniana; Southwest Atlantic; Trinidade Petrel. |
| Ano: 2005 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072005000200006 |
| |
|
| |
| Registros recuperados: 18 | |
|
|
|
