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| Fracasso,Hélio Augusto Alves; Branco,Joaquim Olinto; Barbieri,Edison. |
| Despite being widely distributed in South America and having relatively large populations, little is known about the trophic ecology of the South American Tern (Sterna hirundinacea) and Cabot's Tern (Thalasseus acuflavidus). In Brazil, South American and Terns Cabot's breed in mixed colonies from the state of Espírito Santo to Santa Catarina. Here, we describe results of a study of the feeding ecology of these two species during the reproductive seasons of April to October of 2003, 2005 and 2006 from Cardos Island, Santa Catarina, Brazil. A total of 6248, 5140, and 4006 fishes were delivered to chicks or females by South American Terns; and 1157, 628 and 98 fish and or other prey items by Cabot's Terns during the breeding seasons of 2003, 2005, and 2006,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cabot's Terns; South American Terns; Feeding ecology; Prey; Foraging. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000300016 |
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| Branco,Joaquim Olinto; Fracasso,Hélio Augusto Alves. |
| Callinectes ornatus (Ordway, 1863) é a espécie mais abundante de Portunidae, capturada como fauna acompanhante na pesca artesanal do camarão sete-barbas. Durante o período de Agosto de 1996 a Julho de 2002, os caranguejos foram monitorados mensalmente na Armação do Itapocoroy. C. ornatus mostrou flutuações sazonais na abundância com as maiores taxas na primavera e no inverno. A variação da população quando a largura da carapaça variou de 2,0 a 10,0 cm, e a presença de juvenis foi comum ao longo do ano. As espécies apresentaram crescimento alométrico positivo, com os machos e as fêmeas chegando à primeira maturação gonadal com 5,8 e 5,2 cm, respectivamente. A pesca artesanal na Armação do Itapocoroy atua com alta intensidade sobre o estoque adulto. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspectos biológicos; Siri azul; Taxas relativas de crescimento. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100016 |
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| Branco,Joaquim Olinto; Fracasso,Hélio Augusto Alves; Moraes-Ornellas,Valéria dos Santos. |
| The Brown Booby, Sula Leucogaster, is one of the most common species of marine birds of the Brazilian coast and, in spite of being a viable subject for long-term studies, in Brazil there are scarce demographic descriptions of this species obtained from observations made in sets of consecutive years. This paper presents breeding information collected in monthly samples taken in the Moleques do Sul Island, Florianópolis, Santa Catarina, during a five year period. The main island was divided into three different study areas, in which adult censuses were conducted, along with counts of number of nests, eggs, chicks and incubating adults. No significant change was found in these numbers during the sampled years and the breeding season extended over the entire... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brown Booby; Reproduction; Demographic parameters; Santa Catarina; Brazil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400039 |
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| Fracasso,Hélio Augusto Alves; Branco,Joaquim Olinto; Barbieri,Edison. |
| Cabot's Terns Thalasseus acuflavidus (Latham, 1737) are widely distributed along the Atlantic coast of South America from the Caribbean Islands (12º S) to the region of Porto Deseado, Argentina (46º S). Daily observations were conducted on the Cardos Island during 2003, 2005 and 2006 to determine timing and nesting success, and the reproductive biology of the Cabot's Terns nesting there. The first adults arrived at the colony from 22 April to 15 May during the three years recorded; a total of 144 nests were recorded in 2003, 174 in 2005 and 50 in 2006. Observed incubation time was 24.1 ± 0.35 days, and mean egg size was 5.15 ± 0.02 cm in length and 34.30 ± 0.25 g in weight. Hatching success was lowest in 2003 and highest in 2006, with natural causes (such... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Cabot's Terns; Brazil; Conservation; Reproductive success. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000300005 |
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