Abundance, breeding and food of the Little Blue Heron Egretta caerulea (Aves, Ardeidae) in the Patos Lagoon estuary, a recently colonized area in southern Brazil

We document the expansion of the breeding distribution of the Little Blue Heron Egretta caerulea (Linnaeus, 1758) to 850 km beyond its previous southern limit in South America. In addition we present data on abundance, breeding biology and food of the species in the Patos Lagoon estuary, the area which the species recently colonized. The maximum abundance recorded in the breeding colony and in a nocturnal roosting site was 53 and 49 individuals respectively. Nesting occurred from September to March. Birds nested in a mixed breeding colony together with about 3,000 breeding pairs of seven other species of Pelecaniformes, in a swampy forest near the margin of the estuary. Five nests were between 1.5 and 4.3 m from the ground, on the shrub Daphnopsis racemosa (Thymelaeaceae), on the trees Sebastiana brasiliensis (Euphorbiaceae) and Mimosa bimucronata (Leguminosae), or on the bamboo Bambusa sp. (Poaceae). Four nests produced two fledglings each, while one nest was abandoned. Of 13 grouped samples of food regurgitated by five nestlings, Pink Shrimp Farfantepenaeus paulensis (Perez-Farfante, 1967) constituted 70% in mass, while total length of ingested fishes and shrimps varied mostly between 20 and 50 mm. Estuarine prey items represented 99% of the total food mass. The recent southward expansion of the breeding range of the Little Blue Heron in South America may be a response to climate warming of the Patos Lagoon estuary. Degradation of estuaries in the southwestern Atlantic may also be forcing the birds to breed in areas outside previous geographical range

Sexual development, size at maturity, size at maternity and fecundity of the blue shark Prionace glauca (Linnaeus, 1758) in the Southwest Atlantic

Size at maternity and size at maturity of the blue shark Prionace glauca were studied from samples collected during ten commercial longline fishing cruises off southern Brazil and in adjacent international waters. The sharp increase of the amplitude of the values of reproductive variables at a given fork length (FL) was evidence that from that FL reproduction occurred. Thus, we calculated the proportion of mature sharks in FL classes to estimate the median size at maturity. The accelerated growth of the claspers started before the beginning of the testis maturation and semen production, whereas the accelerated development of the ovary and the oviducal glands started simultaneously. Although most females with mating marks were mature, few had sperm stored in the oviducal glands. The population parameter of size at 50% of maturity was estimated at 171.2 cm FL for females and 180.2 cm FL for males. The median size at maternity was estimated in 193.9 cm FL and half of the females with five to six years old were recruited for reproductive phase of life. As most shark species, P. glauca in the Southwest Atlantic reach maturity at about three-fourths of its maximum size and half of its maximum age. Median litter size was 33 embryos. A positive not significant linear relationship between the uterine fecundity and the size of the pregnant female was observed. (C) 2014 Elsevier B.V. All rights reserved.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Resumos dos trabalhos técnico-científicos apresentados na reunião técnica sobre o estado da arte e ordenamento da pesca de camarões nas regiões sudeste e sul do brasil - CEPSUL/IBAMA – Itajaí/SC (07-11/11/2000)

REUNIÃO TÉCNICA SOBRE O ESTADO DA ARTE E ORDENAMENTO DA PESCA DE CAMARÕES NAS REGIÕES SUDESTE E SUL DO BRASIL. CEPSUL/IBAMA – ITAJAÍ/SC (07-11/11/2000) - RESUMO NÃO DISPONÍVELEste PDF inclui os resumos apresentados na REUNIÃO TÉCNICA SOBRE O ESTADO DA ARTE E ORDENAMENTO DA PESCA DE CAMARÕES NAS REGIÕES SUDESTE E SUL DO BRASIL. CEPSUL/IBAMA – ITAJAÍ/SC (07-11/11/2000).Estão inclusos os seguintes trabalhos:PADRÕES ESPACIAIS E TEMPORAIS DE PESCA DA FROTA CAMARONEIRA INDUSTRIAL DE SANTA CATARINA; IMPLICAÇÕES NA EXPLOTAÇÃO DA FAUNA ACOMPANHANTE E NO ORDENAMENTO. José Angel Alvarez Perez; Paulo Ricardo Pezzuto; Willian Guimarães Vale; Thaís Mehl Ribas & Guilherme de Souza Soares – p. 37-39 PROJETO DE “ANÁLISE E DIAGNÓSTICO DA PESCA ARTESANAL E COSTEIRA DE CAMARÕES NA REGIÃO SUL DO BRASIL: SUBSÍDIOS PARA UM ORDENAMENTO”. Paulo Ricardo Pezzuto – p. 41-44 BIOLOGIA E PESCA DO CAMARÃO SETE-BARBAS NA REGIÃO DE PENHA (SC), SUA FAUNA ACOMPANHANTE E RELAÇÃO COM AS AVES MARINHAS. Joaquim Olinto Branco – p. 45-45 CAMARÃO: PESCADO OBJETIVO OU CAPTURA ACESSÓRIA? SUGESTÕES PARA O GERENCIAMENTO DA PESCARIA. Marcelo Vianna – p. 47-49 ESTRUTURA POPULACIONAL DO CAMARÃO-ROSA (Farfantepenaeus brasiliensis E Farfantepenaeus paulensis) DESEMBARCADO NA REGIÃO DE SANTOS-SP E PESCA EXPERIMENTAL COM GERIVAL EM CANANÉIA-SP. Nilamon de Oliveira Leite Jr.  & Miguel Petrere Jr – p. 51-51 A PESCA DO CAMARÃO SETE-BARBAS Xiphopenaeus kroyeri (HELLER) NAS PRAIAS DO LITORAL NORTE PARANAENSE. Arno Blankensteyn; Cassiana Baptista; Adriana Rickli & Karim H. Fehlauer – p. 53-53 A EXPERIÊNCIA DE ADOÇÃO DE FÓRUM COMO INSTRUMENTO DE GESTÃO. Hamilton Rodrigues & Fernando D'Incao – p. 55-56 EVOLUÇÃO DA PESCARIA INDUSTRIAL DE CAMARÃO-ROSA, Farfantepenaeus paulensis E F. brasiliensis, NA COSTA SUDESTE E SUL DO BRASIL. Hélio Valentini; Fernando D’Incao& Luiz Fernando Rodrigues - p. 57-5

Identification of the sharks of the genus Etmopterus Rafinesque, 1810 (Elasmobranchii: Etmopteridae) from the upper slope of southern Brazil, with comparison between the species E. bigelowi Shirai & Tachikawa, 1993 and E. pusillus Lowe, 1839

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