Número de vértebras de characiformes do rio Amazonas e seu uso na identificação de larvas do grupo

Araújo-Lima, Carlos A. R. M.; Donald, E

doi:10.1590/1809-43921988182358

Cited by 22 publications

(21 citation statements)

References 2 publications

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“…ARAUJO-LIMA & DONALD (1988) observed that, despite the limitations caused by the overlapping of the number of myomeres, this characteristic is useful in the identification ofCharaciformes larvae in the Amazon river. In the case of the Hypophthalmidae, HOWES (1983) found an exceptionally large number ofvertebrae (62) that included the vertebral complex (7).…”

Section: Discussionmentioning

confidence: 99%

Morphological description of larvae of the Mapará Hypophthalmus edentatus (Spix) (Osteichthyes, Hypophthalmidae) in the Itaipu reservoir (Parana River, Brazil)

1998

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ABSTRACT. The ontogenetic aspects of larvae of Hypophlhalmus edenlalus (Spix, 1829) from the ichthyoplankton samples collected in the Itaipu reservoir between March 1988 and April 1990 were analysed. Sample were caught by 0.5 mm mesh conic-cylindrical plankton net. Larvae of H. edenlalus were identified and described as SilurifOlms from the morphological and morphometric development series. They have a small to medium-sized head, long body, small eyes, little pigmentation, mandibular barbules and 53 to 56 myomeres. High values obtained with cOITelation coefficient (r > 0.97; P< 0.001) show that growth was proportional in different parts of the body. KEY WORDS. Hypophlhalmusedenlallls, fish larvae, Itaipu reservoir, larval development, Parana RiverThe first studies about development offish eggs and larvae in Brazil were conducted by VO IHERING (1934), who successfully developed the induced oviposition technique (WOYNAROVICH & HOVATH 1980). Although these studies began more than 60 years ago, little is known about freshwater ichthyoplankton, since only 2% of Cypriniformes and Characiformes larvae have been identified (RICHARDS 1985).In the upper River Parana basin, studies on the biology and ecology of fish larvae are scarce. Studies are restricted to preliminary surveys of eggs and larvae of the floodplain and Itaipu reservoir (FuEMlITAIPU BINACIONAL 1990; NAKATANI el af. 1993).The family Hypophthalmidae are commercially explored fish in the Itaipu reservoir. According toAGOSTINHO el af. (1994), the maparajuveniles are restricted to the reservoir, marginal lakes of the floodplain and adjacent sites close to these environments. RINGUELET el af. (1967) characterize adults of Hypophlhalmus edenlalus (Spix, 1829) by a high head at the posterior region, compressed body, eyes in ventro-Iateral position, mental barbules next to the mandibular symphysis, tender and uniformly colored skin in the dorsal part with no blotches, and silvery at

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Section: Discussionmentioning

confidence: 99%

Morphological description of larvae of the Mapará Hypophthalmus edentatus (Spix) (Osteichthyes, Hypophthalmidae) in the Itaipu reservoir (Parana River, Brazil)

1998

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“…All biological samples were examined in the laboratory, using a stereoscopic microscope. The larvae were quantified and identified based on their morphology, using the work of Araújo‐Lima () and Araújo‐Lima and Donald () as references. Individuals were separated according to their developmental stage (pre‐flexion, flexion and post‐flexion) according to the terminology of Nakatani et al.…”

Section: Methodsmentioning

confidence: 99%

Distribution of economically important fish larvae (Characiformes, Prochilodontidae) in the Central Amazonia, Brazil

Zacardi

Bittencourt

Nakayama

et al. 2017

Fisheries Management Eco

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The spatio‐temporal patterns of three species of Prochilodontidae larvae that are intensely used as fishery resources in Central Amazonia are analysed. Sampling was conducted during 2011 at four stages of the hydrological cycle (flood, high water, falling and low water phases). Sixteen collecting stations were located in different habitats (mouths of lake channels, “barrancos,” sandbars and the main river channel) along the Solimões and Japurá rivers. A total of 4,322 Prochilodontidae larvae were collected during this investigation, with most captures occurring in the Japurá River (76.3% of larvae), while only 23.7% of the samples were caught in the Solimões River. Most captures occurred during rising water, indicating a strong reproductive seasonality in these three species. Rainfall and water level, along with dissolved oxygen, water temperature and electric conductivity, determined the larvae's spatio‐temporal distribution. These results confirm the importance of várzea areas along white water rivers for the conservation, preservation and maintenance of heavily used fishery resources in the Brazilian Central Amazonia.

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“…The methodology to determine the volume of water filtered was used a standard flow meter (General Oceanics TM) according to . The larvae and eggs were fixed with 10% formalin in the field and taken to the Núcleo de Pesquisas em Ictioplâncton (NUPIC) of the Universidade Federal do Amazonas (UFAM), in Manaus, where they were analyzed and identified according to the development stage such as: pre-flexion, flexion and postflexion (Ahlstrom & Ball, 1954;Phonlor, 1984;Nakatani et al, 2001) and number of myomeres (Araújo- Lima & Donald, 1988). Larvae were identified at the most precisely level possible (genus or species), but due to lack of taxonomic information on the larval forms of fish species from the Negro River not all larvae could be identified at these level, thus family level was used to standardize the analyses in this study.…”

Section: Samplingmentioning

confidence: 99%

Spawning areas, dispersion and microhabitats of fish larvae in the Anavilhanas Ecological Station, rio Negro, Amazonas State, Brazil

Oliveira

Ferreira

2008

Neotrop. ichthyol.

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The abundance and distribution of ichthyoplankton and their relationships to current velocity, temperature, dissolved oxygen, pH and electrical conductivity of the water in the Anavilhanas Ecological Station, Negro River, Amazonas State, Brazil, were analyzed. Preferred microhabitats for spawning, dispersion and nursery were also verified. Sampling was undertaken during the falling water period of 2001 and the rising water period of 2002, in a section of 100 km subdivided into 5 subsections, with a total of 20 stations (5 beaches, 5 ravines, 5 channels, and 5 lake channels) at night and during the day at the surface and at the bottom. 647 eggs and 4,187 larvae were captured, belonging to 10 families and four orders: Characiformes (6), Siluriformes (2), Perciformes (1), and Clupeiformes (1). Engraulidae (55.39%), Pimelodidae (30.45%), Auchenipteridae (5.23%) and Sciaenidae (5.13%) were the dominant families. The hierarchical statistical model (ANOVA) with three factors (microhabitat, depth and period) was applied to the environmental variables and the larval abundance, showing greater abundances of sciaenids in the ravines and lower abundances of engraulids in the channels. The highest captures were obtained at lower temperature values, at the bottom during the day and at the surface at night, suggesting an active larval behavior. The presence of the four larval development stages in all subsection for pimelodids and sciaenids, and in three subsections for engraulids, indicates that the Anavilhanas Ecological Station is an important spawning and nursery area for species of these groups in the Negro River. Larvae abundance of all characiform families was extremely low (from 0.1 to 1.17%), suggesting that they do not spawn in this system.A abundância e distribuição do ictioplâncton e suas relações com a velocidade da corrente, temperatura, oxigênio dissolvido, pH e condutividade elétrica da água na Estação Ecológica Anavilhanas, rio Negro, Amazonas, Brasil, foram investigadas, bem como o uso de áreas e microhabitats preferenciais para desova, dispersão e criação. As coletas foram realizadas em dois perío-dos: vazante de 2001 e enchente de 2002, em um trecho de 100 km dividido em cinco subseções, e em cada um delas foram amostrados os microhabitats praia, barranco, canal e canal de lago, com um total de 20 pontos de coletas (cinco praias, cinco barrancos, cinco canais e cinco canais de lago). As coletas foram realizadas durante o dia e à noite na superfície e no fundo. 647 ovos e 4.187 larvas de peixes foram capturados, pertencentes a quatro ordens e dez famílias: Characiformes (6), Siluriformes (2), Perciformes (1) e Clupeiformes (1). As famílias dominantes foram Engraulidae (55,39%), Pimelodidae (30,45%), Auchenipteridae (5,23%) e Sciaenidae (5,13%). O modelo de estatística hierárquica (ANOVA) com três fatores (microhabitat, profundidade e período) foi aplicado às variáveis ambientais e às abundâncias de larvas, mostrando maior abundância de Sciaenidae nos barrancos e menor de Engraulidae nos canais. As maiores ca...

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Número de vértebras de characiformes do rio Amazonas e seu uso na identificação de larvas do grupo

Cited by 22 publications

References 2 publications

Morphological description of larvae of the Mapará Hypophthalmus edentatus (Spix) (Osteichthyes, Hypophthalmidae) in the Itaipu reservoir (Parana River, Brazil)

Morphological description of larvae of the Mapará Hypophthalmus edentatus (Spix) (Osteichthyes, Hypophthalmidae) in the Itaipu reservoir (Parana River, Brazil)

Distribution of economically important fish larvae (Characiformes, Prochilodontidae) in the Central Amazonia, Brazil

Spawning areas, dispersion and microhabitats of fish larvae in the Anavilhanas Ecological Station, rio Negro, Amazonas State, Brazil

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