Fish Pass
Mostrando 1-12 de 17 artigos, teses e dissertações.
-
1. Fish passage system in an irrigation dam (Pilcomayo River basin ): when engineering designs do not match ecohydraulic criteria
The Route 28 Dam has the potential to block fish movements from La Estrella marsh to the Pilcomayo River. In addition, the many fish that concentrate immediately downstream of the dam may suffer high mortality when they are stranded during low water periods. The goals of this study are to determine if fish are able to pass the spillway and to assess if the d
Neotrop. ichthyol.. Publicado em: 2012-10
-
2. Efeitos da suplementação de glutamina na ração de tilápia do Nilo sobre o desempenho e resistência à infecção bacteriana / Effects of glutamine supplementation in the ration of Nile tilapia on performance and resistance to bacterial infection
The current study was aimed at evaluate the effect of dietary glutamine supplementation in diets of Nile tilapia adults (Oreochromis niloticus) on the performance and resistance to infection by Streptococcus agalactiae. Two trials were carried out at the fish nutrition laboratory of the Animal Science Department of the Federal University of Viçosa. In the f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/06/2010
-
3. Analise histoquimica, ultra-estrutural e morfometrica do efeito de drogas anti-inflamatorias não esteroides (naproxeno e indometacina) sob a regeneração da nadadeira caudal de teleosteo, Cyprinus carpio (carpa) / Histochemical, ultra-structural and morphometric analysis of the effect of nonsteroidal anti-inflammatory drugs (naproxen and indomethacin) under the tail fin regeneration of teleostm Cyprinus carpio (carp)
The fins of teleosts, when partially amputated, they pass for a quick regenerative process called epimorphic regeneration, characterized by the formation of a mass of undifferentiated cells, by the differentiation of these cells, by the synthesis and the deposition of the extracellular matrix and morphological restoration. The regeneration of the fin is extr
Publicado em: 2008
-
4. Proposal of a sluice-type fish pass
O projeto uni-dimensional de passagem para peixes leva, com freqüência, a uma solução pouco satisfatória. Os problemas são conseqüências de uma falta ou insuficiência de colaboração entre biólogos e engenheiros civis. Neste artigo é apresentado um novo tipo de passagem para peixes. Este é constituído por um sistema de vertedores seqüenciais c
Neotropical Ichthyology. Publicado em: 2007
-
5. Crude protein reduction and digestible methionine+cystine and threonine to digestible lysine ratios in diets for fingerlings of Nile tilapia / Redução de proteína bruta e relações de metionina+cistina e treonina digestíveis com lisina digestível em dietas para alevinos de tilápia do Nilo
The current study was aimed at investigating the crude protein reduction and the methionine+cystine and threonine to lysine ratios, based on the ideal protein concept in diets for reverted Nile tilapia fingerlings (Oreochromis niloticus), of the thailand line. Four hundred twenty Nile tilapia fingerlings with an average initial weight of 1.83 0.02 g, were al
Publicado em: 2007
-
6. The Canal da Piracema at Itaipu Dam as a fish pass system
O Canal da Piracema é considerado o maior sistema de transposição para peixes no mundo, com 10 km de extensão. A sua construção foi controversa, pois viabilizou a conexão entre duas províncias ictiofaunísticas distintas. Este trabalho buscou avaliar a ictiofauna presente no Canal da Piracema, a abundância e distribuição das espécies migradoras d
Neotropical Ichthyology. Publicado em: 2007
-
7. Crude protein reduction, digestible amino acids digestible lisine ratios and lysine levels in diets for Nile tilapia fingerlings / Redução de proteína bruta, relações aminoácidos digestíveis com a lisina digestível e níveis de lisina digestível em rações para alevinos de tilápia do Nilo
The current study was aimed at evaluate the effect of dietary crude protein reduction with amino acids supplementation and determine the requirements of methionine plus cytine, threonine and lysine, based on the ideal protein concept, in diets for reverted Nile tilapia fingerlings (Oreochromis niloticus), of the thailand line. Four trials were carried out at
Publicado em: 2006
-
8. Ultrastructure of ovarian follicular epithelium of the amazonian fish Pseudotylosurus microps (Gunther) (Teleostei, Belonidae): I. the follicular cells cycle of development
The present paper deals with the changes on ultrastructural features of the follicular cells along the growth of the oocyte of Pseudotylosurus microps (Gunther, 1868). The epithelium pass from single squamous to pseudostratified and finally cylindric. Remarkable are the changes in the nuclear shapes, the increasing amount of rough endoplasmic reticulum and t
Revista Brasileira de Zoologia. Publicado em: 2001-03
-
9. Sistemas para a transposição de peixes. / Fish transponding system: fishways.
Sistemas para a Transposição de Peixes são implantados para atenuar os efeitos negativos dos barramentos sobre os peixes migradores ou de piracema. No Brasil, como na maioria dos paises subdesenvolvidos, devido a fatores históricos, financeiros, políticos, institucionais e culturais desfavoráveis, há uma defasagem tecnológica quanto aos Sistemas para
Publicado em: 2000
-
10. Obtenção de polpa da corvina (Micropogon sp) salgada e seca por um processo rapido e sua complementação com arroz triturado
The objective of the present study was to explore new ways of fish processing and evaluate such products in thee formulation of fish-rice mixtures obeying a pratical protein-energy balance. The fish was fresh corvina ( Micropogon sp ) caught off the São Paulo coast according to a major local supplier. The viscera and skin were manually removed and the filet
Publicado em: 1978
-
11. Intestinal capillariasis.
Intestinal capillariasis caused by Capillaria philippinensis appeared first in the Philippines and subsequently in Thailand, Japan, Iran, Egypt, and Taiwan, but most infections occur in the Philippines and Thailand. As established experimentally, the life cycle involves freshwater fish as intermediate hosts and fish-eating birds as definitive hosts. Embryona
-
12. High-frequency germ-line transmission of plasmid DNA sequences injected into fertilized zebrafish eggs.
With the goal of developing techniques for DNA insertional mutagenesis in zebrafish, we established procedures for rapidly obtaining and injecting large numbers of fertilized eggs. Using either of two plasmid constructs, we injected uncut DNA into fertilized eggs at the one- or two-cell stage. Fish hatched from injected eggs were raised to sexual maturity, a