Aquaria
Mostrando 1-12 de 48 artigos, teses e dissertações.
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1. Estratégias alimentares na larvicultura do peixe ornamental amazônico acará-severo (Heros severus) (Heckel, 1840)
RESUMO Com o presente estudo, objetivou-se avaliar o tempo de fornecimento de náuplios de artêmia e o período de transição alimentar para pós-larvas de acará-severo (Heros severus). Foram utilizadas 450 pós-larvas de acará-severo, distribuídas em 45 aquários, em delineamento inteiramente ao acaso, em esquema fatorial 3x5, com três repetições. F
Arq. Bras. Med. Vet. Zootec.. Publicado em: 28/10/2019
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2. Optimal feeding frequency for Heros severus (Heckel, 1840), an Amazon ornamental fish
ABSTRACT The influence of feeding frequency on growth performance, batch uniformity, and survival rate of severum (Heros severus) larvae and juveniles was investigated in two experiments. In the first, 200 five-day-old severum larvae with 3.20±0.31 mg and 6.20±0.39 mm were randomly distributed into 20 aquaria (1 L) and fed 500 Artemia nauplii larvae−1 da
R. Bras. Zootec.. Publicado em: 01/08/2019
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3. Stress-reducing and anesthetic effects of the essential oils of Aloysia triphylla and Lippia alba on Serrasalmus eigenmanni (Characiformes: Serrasalmidae)
RESUMO Avaliou-se o efeito anestésico dos óleos essenciais de Aloysia triphylla e de Lippia alba no peixe amazônico Serrasalmus eigenmanni. Os peixes foram colocados em aquários contendo OEs de A. triphylla ou L. alba (25 a 200 µL L-1). Após, foram transferidos para aquários com água sem anestésicos para avaliar o tempo de recuperação. Em outro ex
Neotrop. ichthyol.. Publicado em: 18/07/2019
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4. Dietary lysine requirement of adult lambari ( Astyanax altiparanae ) (Garutti and Britski, 2000)
ABSTRACT A 90-day feeding trial was conducted to estimate the dietary lysine requirement of adult lambari ( Astyanax altiparanae ), based on growth performance, whole-body composition, muscle development, and aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities. Six isoproteic (345.0 g kg−1) and isoenergetic (19.51 MJ kg−1) diet
R. Bras. Zootec.. Publicado em: 04/10/2018
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5. Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer
ABSTRACT Palaemonid shrimps occur in the tropical and temperate regions of South America and the Indo-Pacific, in brackish/freshwater habitats, and marine coastal areas. They form a clade that recently (i.e., ~30 mya) invaded freshwater, and one included genus, Macrobrachium Bate, 1868, is especially successful in limnic habitats. Adult Macrobrachium acanthu
Zoologia (Curitiba). Publicado em: 23/10/2017
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6. Efficiency of essential oils of Ocimum basilicum and Cymbopogum flexuosus in the sedation and anaesthesia of Nile tilapia juveniles
ABSTRACT This study aimed to verify the sedative and anaesthetic effect of the essential oils of basil (Ocimum basilicum) (EOOB) and lemongrass (Cymbopogum flexuosus) (EOCF) in Nile tilapia juveniles. The fish were transferred to aquaria containing different concentrations of each essential oil: 10, 25, 50, 100, 200, 400 and 600 μL L-1. The time of sedation
An. Acad. Bras. Ciênc.. Publicado em: 31/08/2017
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7. Influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental Heros severus (Heckel, 1840)
ABSTRACT The objective of this work was to evaluate the influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental fish severum (Heros severus). A completely randomized study was used with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D, 24L:0D) and four replicates, with the aquaria as the experimental unit. Two hundr
R. Bras. Zootec.. Publicado em: 2016-07
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8. A privatização das águas no contexto da contrarreforma do estado brasileiro
O artigo problematiza a chamada reforma aquária no Brasil, proposta pelo governo federal destacando suas dimensões socioeconômicas e ambientais. Tal proposta pretende alterar as formas de controle do acesso à água com vistas à sua privatização já que este é um recurso natural que, além de essencial à preservação da vida, integra todos os proces
Serv. Soc. Soc.. Publicado em: 2015-06
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9. Effect of photoperiod on locomotor activity, growth, feed efficiency and gonadal development of Nile tilapia
The objective of this study was to evaluate the effect of photoperiod on locomotor activity, growth and gonadal development in Nile tilapia (Oreochromis niloticus) fingerlings. A completely randomised design was used, with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D and 24L:0D) and four replicates, with the aquarium as the experimental unit. One hundred
R. Bras. Zootec.. Publicado em: 2013-12
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10. The effect of increased light intensity on the aggressive behavior of the Nile tilapia, Oreochromis niloticus (Teleostei: Cichlidae)
Animals show behavioral and physiological changes that emerge in response to environmental perturbations (i.e., emergency life-history stages). In this study, we investigate the effects of light intensity on aggressive encounters and social stability in groups of adult male Nile tilapia, Oreochromis niloticus (Linnaeus, 1758). The study compared the behavior
Zoologia (Curitiba). Publicado em: 2013-04
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11. Saline water for juvenile giant trahira during feed training
The objective of this study was to investigate the effect of different water salinities on juvenile Hoplias lacerdae during feed training. Salinity levels of 0, 3, 6 and 9 g salt L-1 were used. Juveniles (3.33±0.1 cm and 0.6±0.09 g) were stocked at a density of six fish L-1 in aquaria (10 L volume) with supplementary aeration. Weight gain, length gain, and
Revista Brasileira de Zootecnia. Publicado em: 2012-06
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12. Differences on allocation of available resources, in growth, reproduction, and survival, in an exotic gastropod of Physidae compared to an endemic one
Physa acuta Draparnaud, 1805 is an invasive gastropod that can affect local species. In Argentina, it is widespread and abundant, even in environments inhabited by the native species Stenophysa marmorata Guilding, 1828. Its predominance raises the question whether this could be explained by a more successful energy allocation in functional requirements (grow
Iheringia. Série Zoologia. Publicado em: 2010-09