Spawning Areas
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Optimal fishing samplers to reveal the morphological structure of a fish assemblage in a subtropical tidal flat
RESUMO Os caracteres morfológicos das espécies são essenciais para avaliar a estrutura funcional de uma assembleia de peixes, uma vez que as diferenças entre elas são indicativas de distintas características ecológicas. De forma geral, as planícies de maré são importantes para assembleias de peixes por oferecerem áreas para alimentação, refúgio
Neotrop. ichthyol.. Publicado em: 11/03/2019
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2. Reproductive potential of Pagrus pagrus (Perciformes: Sparidae) in coastal waters of Buenos Aires Province (Argentina) and Uruguay (34º-39ºS)
ABSTRACT The reproductive potential of red porgy in coastal waters of Buenos Aires Province (Argentina) and Uruguay (34º-39ºS) was studied by means of a macroscopic and histological analysis of the gonads. Length and age at first maturity were determined, and fecundity, spawning frequency and egg quality were estimated. The spawning season extended from sp
Neotrop. ichthyol.. Publicado em: 03/07/2017
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3. Larvae of migratory fish (Teleostei: Ostariophysi) in the lotic remnant of the Paraná River in Brazil
ABSTRACT Fish larvae and adults are morphologically distinct from each other and have different ecological requirements. Research on the dynamics of ichthyoplankton provides valuable information about the early stages of the life cycle of fish. This study analyzed the temporal and spatial distribution of the larval stages of three migratory species - Salminu
Zoologia (Curitiba). Publicado em: 2015-08
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4. Population genetic structure and body shape assessment of Pagrus pagrus (Linnaeus, 1758) (Perciformes: Sparidae) from the Buenos Aires coast of the Argentine Sea
This study highlights the analysis of the morphological and genetic variation of the common sea bream Pagrus pagrus, and compares its two main areas of concentration: the northern (35ºS - 38ºS) and the southern areas (39ºS - 41ºS) of the Buenos Aires coast of the Argentine Sea. Body shape characterization presented two significantly different morphotypes
Neotrop. ichthyol.. Publicado em: 2015-06
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5. Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains
Este trabalho avaliou a importância de dois ambientes situados no canal principal do rio do Peixe (afluente do alto rio Uruguai) na reprodução e crescimento inicial dos peixes. As coletas de ictioplâncton, macrozooplâncton e zoobentos foram realizadas mensalmente no período de outubro de 2011 a março de 2012, amostrando um ambiente de corredeira e um
Neotrop. ichthyol.. Publicado em: 16/09/2014
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6. Coordinated feeding behavior of the Guiana dolphin, Sotalia guianensis (Cetacea: Delphinidae), in southeastern Brazil: a comparison between populations
The coordinated feeding tactics used by delphinids are influenced by differences in the distribution of prey species, season, and opportunities for social learning. In the present study, we compared the coordinated feeding behavior of two populations of the Guiana dolphin, Sotalia guianensis, in southeastern Brazil, and how these feeding tactics vary seasona
Zoologia (Curitiba). Publicado em: 20/12/2013
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7. Downstream passage of fish larvae and eggs through a small-sized reservoir, Mucuri river, Brazil
In South America, one important symptom of the failure of fish passages to sustain fish migratory recruitment is the inability of eggs and larvae to reach the nurseries. This is especially so when the breeding areas are located upstream of a reservoir, and the floodplain is downstream of the dam. Therefore, the transport of fish larvae and eggs across reserv
Zoologia (Curitiba). Publicado em: 2011-12
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8. Assemblage structure and composition of fish larvae in a lotic stretch of the Paranà River remaining in the region of the Ilha Grande National Park - Brazil / ComposiÃÃo e estrutura da assembleia de larvas de peixes em um trecho lÃtico remanescente do Rio ParanÃ, na regiÃo do Parque Nacional de Ilha Grande - Brasil
O estudo das fases inicias do ciclo de vida dos peixes à importante para entendimento do sucesso das espÃcies no ambiente e determinar Ãreas e perÃodos de desova. Este estudo analisou a composiÃÃo e a estrutura da assembleia de larvas de peixes em uma regiÃo do Ãltimo trecho lÃtico do rio ParanÃ, no Parque Nacional de Ilha Grande, buscando a exist�
Publicado em: 2010
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9. Measures of the interannual marine variability on southeast Brazilian bight and its relationship to the spawning areas of Brazilian sardine (Sardinella braziliensis) / Medidas da variabilidade interanual marinha sobre a plataforma continental sudeste do Brasil e sua relação com áreas de desova da sardinha-verdadeira (sardinella brasiliensis)
This work aims to investigate the relation of marine interannual variability in a region located in southern coast of Brazil, also known as the Southeast Brazilian Bight (SBB) and the spawning areas of the Brazilian sardine (Sardinella braziliensis) in SBB. SBB marine ecosystems are related to a strong influence of a coastal upwelling system. Variables used
Publicado em: 2009
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10. Información, conocimiento y percepción sobre el riesgo de contraer el dengue en Argentina: dos experiencias de intervención para generar estrategias locales de control
With the objectives of dengue prevention, health promotion, and action-based research, two experiments were conducted in pilot areas of Buenos Aires and Vicente López, Argentina. In each area, community, government, and non-governmental references were identified. The study included an entomological survey (with ovitraps), environmental survey (with field o
Cadernos de Saúde Pública. Publicado em: 2009
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11. Medidas da variabilidade interanual marinha sobre a plataforma continental sudeste do Brasil e sua relação com áreas de desova da sardinha-verdadeira (sardinella brasiliensis) / Measures of the interannual marine variability on southeast Brazilian bight and its relationship to the spawning areas of Brazilian sardine (Sardinella braziliensis)
Este trabalho tem como objetivo principal investigar a relação entre medidas da variabilidade internanual marinha sobre a Plataforma Continental Sudeste (PCSE) do Brasil e a localização das áreas de desova da sardinha-verdadeira (Sardinella brasiliensis) dentro da PCSE. A PCSE inclui ecossistemas marinhos sob a influência de ressurgência costeira. As
Publicado em: 2009
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12. Biologia populacional de Pomacanthus paru (Teleostei: Pomacanthidae) e anÃlise da sustentabilidade de captura do bycatch de peixes ornamentais
Pomacanthus paru presents great importance in the Brazilian aquarium trade, being the second most exported species since 2000. The aims of this research were (a) to describe the reproductive biology and to determine the age and growth, (b) to analyze the genetic diversity of P. paru and P. arcuatus from mt-DNA, (c) to record ornamental fish bycatch and to pr
Publicado em: 2009