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| Reis,Marcelo; Figueira,Will F.. |
| ABSTRACT Bottom-dwelling elasmobranchs, such as guitarfishes, skates and stingrays are highly susceptible species to bycatch due to the overlap between their distribution and area of fishing operations. Catch data for this group is also often merged in generic categories preventing species-specific assessments. Along the east coast of Australia, the Eastern Fiddler Ray, Trygonorrhina fasciata (Muller & Henle, 1841), and the Sydney Skate, Dentiraja australis (Macleay, 1884), are common components of bycatch yet there is little information about their age, growth and reproductive timing, making impact assessment difficult. In this study the age and growth (from vertebral bands) as well as reproductive parameters of these two species are estimated and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age and growth; Rajidae; Rhinobatidae; Sexual maturity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100323 |
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| Zanetti,Ronald; Dias,Nívia; Reis,Marcelo; Souza-Silva,Alan; Moura,Michelle Alves. |
| Foram comparados quatro produtos comerciais à base de sulfluramida (0,3% i.a.), quanto a sua eficiência no controle de Atta sexdens rubropilosa: Dinagro-S NA, Mirex-S Max, AttaMex-S NA e PikaPau-S NA. Avaliou-se a porcentagem de carregamento e devolução das iscas 24 e 48 horas após a aplicação dos tratamentos. A atividade de corte e movimentação das formigas foi avaliada aos 3, 15, 30, 60, 90, 150, 180 e 210 dias após os tratamentos e a mortalidade dos formigueiros, aos 240 dias. A atividade de forrageamento diminuiu a partir dos três dias após a aplicação, paralisando totalmente as colônias, em média, aos 20,5 ± 5,5 dias. Todos os quatro produtos formicidas foram bem aceitos pelas operárias de A. sexdens rubropilosa e apresentaram igual eficiência no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Formigas cortadeiras; Controle químico; Eucalipto; Eficiência de formicidas. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000400021 |
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| Grande,Henrique; Reis,Marcelo; Jacobucci,Giuliano Buzá. |
| Coastal regions are subject to various forms of environmental impacts, such as spills of crude oil and associated products, with a wide range of effects on benthic biodiversity. This study characterized the patterns of recolonization of the macrofauna associated with the brown alga Sargassum cymosum(C. Agardh), on fronds contaminated by diesel oil in a small-scale field experiment. We collected 40 fronds of S. cymosum from an algal bed in southeastern Brazil and defaunated each frond by immersion in fresh water. Half of the fronds were then immersed in seawater (control group) and the other half in a mixture of 50% diesel oil and 50% seawater (impacted group). The test fronds were returned to the algal bed, and natural recolonization took place over a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colonization; Marine macrofauna; Phytal. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200006 |
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