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Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:43:46Z No. of bitstreams: 1 S1679-87592010000700011.pdf: 61956 bytes, checksum: fcdc6ce87c2e044a8a8af744be8588d9 (MD5) Made available in DSpace on 2013-08-22T18:43:46Z (GMT). No. of bitstreams: 1 S1679-87592010000700011.pdf: 61956 bytes, checksum: fcdc6ce87c2e044a8a8af744be8588d9 (MD5) Previous issue date: 2010-06-01 Made available in DSpace on 2013-09-30T17:41:33Z (GMT). No. of bitstreams: 2 S1679-87592010000700011.pdf: 61956 bytes, checksum: fcdc6ce87c2e044a8a8af744be8588d9 (MD5) S1679-87592010000700011.pdf.txt: 27786 bytes, checksum: 16c167b2d5e3ce2a437e4dd048347001 (MD5) Previous issue date: 2010-06-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:12:25Z No. of bitstreams: 2 S1679-87592010000700011.pdf: 61956 bytes, checksum: fcdc6ce87c2e044a8a8af744be8588d9 (MD5) S1679-87592010000700011.pdf.txt: 27786 bytes, checksum: 16c167b2d5e3ce2a437e4dd048347001 (MD5) Made available in DSpace on 2014-05-20T13:12:25Z (GMT). No. of bitstreams: 2 S1679-87592010000700011.pdf: 61956 bytes, checksum: fcdc6ce87c2e044a8a8af744be8588d9 (MD5) S1679-87592010000700011.pdf.txt: 27786 bytes, checksum: 16c167b2d5e3ce2a437e4dd048347001 (MD5) Previous issue date: 2010-06-01 Alterações hematológicas em peixes são consideradas uma importante ferramenta para avaliar processos patológicos decorrentes da exposição a poluentes ambientais. Micropogonias furnieri (Desmarest, 1823) (corvina) é comumente encontrada em regiões estuarinas e eventualmente está exposta a inúmeros contaminantes. No presente estudo foi avaliado o quadro hematológico de indivíduos de M. furnieri coletados na Baixada Santista: o Sistema Estuarino de Santos, considerado poluído, e o estuário do Rio Itanhaém (controle). Foram avaliados o número de Eritrócitos (Er), o Hematócrito (Ht), a taxa de Hemoglobina (Hb), o Volume Corpuscular Médio (VCM) e a Concentração de Hemoglobina Corpuscular Média (CHCM). Nos peixes coletados no Sistema Estuarino de Santos, os níveis de Ht foram significativamente menores, enquanto os níveis de CHCM e Hb foram significativamente mais altos, indicando que os prováveis efeitos estejam atribuídos aos diferentes níveis de contaminação encontrados nos estuários. Hematological alterations in fish are considered a useful tool to evaluate pathological processes resulting from the exposure to environmental pollutants. The whitemouth croaker Micropogonias furnieri is a common species in estuarine areas and potentially exposed to many contaminants. In the present study, the hematological characteristics of fish collected at two sites in Baixada Santista (Santos Estuarine System - SES, a polluted site; and the Estuary of Itanhaém River - EIR, unpolluted site) del was analysed. The following blood descriptors were analyzed: number of Erythrocytes (Er), Hematocrit (Ht), Hemoglobin (Hb), Mean Corpuscular Volume (MCV) and Mean Corpuscular Hemoglobin concentration (MCHC). Fish from SES exhibited significant lower levels of Ht and increase on MCHC and Hb. Such differences are likely related to the different contamination levels found in these estuaries. Universidade Estadual Paulista Júlio de Mesquita Filho Campus Experimental do Litoral Paulista Universidade Federal do Ceará (UFC) Instituto de Ciências do Mar Universidade Santa Cecília Universidade de São Paulo Instituto Oceanográfico Instituto de Pesca Laboratório de Patologia de Organismos Aquáticos Universidade Estadual Paulista Júlio de Mesquita Filho Campus Experimental do Litoral Paulista

The monthly fluctuations of amphipods associated to the algae Bryocladia trysigera was described from March 1997 to February 1998 at the rocky shore known as Poço de Anchieta in the Peruíbe Beach, Itanhaém, Southeastern Brazil. A total of 75,344 individuals were sampled, belonging to 10 species and 9 families. Three species dominated the phytal in number: Hyale nigra, Caprella danileviskii and Caprella penantis. Despite the alternation in dominance of the 3 most abundant species, the amphipod species composition remained generally unchanged, so that the majority of the species were observed in all sampling months. The temporally changing pattern of the community structure, with a decline in amphipod abundance in winter followed by an increase in spring, was probably due to a higher predation pressure in winter period. Flutuações mensais de Amphipoda associados à alga Bryocladia trysigera são descritas. As coletas foram realizadas no período de março de 1997 a fevereiro de 1998 no costão rochoso do Poço de Anchieta na Praia de Peruíbe, Itanhaém (SP). Foram coletados 75.344 indivíduos, identificados em 9 famílias e 10 espécies. Três espécies dominaram numericamente: Hyale nigra, Caprella danileviskii e Caprella penantis. Embora tivesse sido registrada alternância na dominância dessas espécies, foi observada pequena variação na composição específica nos meses amostrados. A variação temporal na estrutura da comunidade, com o declínio da abundância de Amphipoda no inverno, seguido de aumento na primavera, pode ser causada pela maior pressão de predação no inverno.

Feeding of males and females of the Gammaridea Hyate media at mature and immature stages were tested in laboratory experiments. Macro and microscopic algae as well as dead or alive animals were utilized as food. This gammarid is omnivorous, feeding by predation, scavenging, browsing and scraping. Feeding behaviour was discontinuous. Padina vickersiae was more utilized in winter and Ulva fasciata in summer. The feeding activity of all the animals showed great variability in relation to the type of food. Higher temperatures probably account for the higher consumption observed in summer.