Ornamental fish of economic and biological importance to the Xingu River

Ramos, Fabrício Menezes; Araújo, Maria Lucia Góes de; Prang, Gregor; Fujimoto, Rodrigo Yudi

doi:10.1590/1519-6984.02614bm

Cited by 21 publications

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“…The tiger pleco Panaqolus tankei Cramer & Sousa is harvested for the ornamental fish trade (Ramos et al . , ) (exporter codes L. 002 and L. 398) and is common in Lake Bolonha (Vasconcelos & Souza, ) and along the river banks in the lower River Xingu (Cramer & Sousa, ). The present study investigated the reproductive biology of P. tankei , to determine the breeding season, spawning patterns, fecundity and oocyte diameter in a lentic environment.…”

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confidence: 99%

Reproductive biology of the tiger pleco Panaqolus tankei (Loricariidae) in a lentic system of the Amazon Basin

Mendes

Lee

Viana

et al. 2018

Journal of Fish Biology

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This study presents the first information on the reproduction of the recently described tiger pleco Panaqolus tankei, from Lake Bolonha in the north-eastern Amazon Basin. This loricariid has a long reproductive period, fractionated spawning and low fecundity (on average, female gonads contained 37 oocytes), a total length (L ) at first maturity of 47.4 mm for females and 54.1 mm L for males. Correlation of the condition factor and gonado-somatic index with environmental variables suggests that turbidity favours P. tankei reproduction in this environment.

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confidence: 99%

Reproductive biology of the tiger pleco Panaqolus tankei (Loricariidae) in a lentic system of the Amazon Basin

Mendes

Lee

Viana

et al. 2018

Journal of Fish Biology

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“…A aquicultura é uma atividade que, por um lado, se apresenta como uma alternativa para diminuir o esforço de pesca sobre determinadas espécies, mas que, por outro, também implica perdas econômicas para os pescadores ocupados com as populações naturais e menor geração de renda. Desta forma, a aquicultura pode forçar os pescadores a redirecionarem suas atividades produtivas visando manter sua fonte de renda através da captura de espécies que ainda não são fornecidas pelo cultivo, o que também pode contribuir para a sobrepesca de determinados estoques (RAMOS et al, 2015).…”

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Cadeia comercial de peixes ornamentais do Rio Xingu, Pará, Brasil

et al. 2017

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This paper describes the marketing ways and the margins of trade of five species of ornamental fish species, which are caught on the Xingu River, State of Pará, Brazil. Data collection was carried out intentionally and sequentially of 51 actors of the supply chain, including fishermen, wholesalers and national and international retailers. The results indicate that ornamental fish can undergo up to six marketing agents before arriving to the finish consumer. The sunshine pleco (Scobinancistrus aureatus) is the species of the greatest value in the market, being sold to the final consumer at the price of up to R$ 543.00, an increase of 1,361% in the North American market and 1,527% in the European market. The marketing margins are high: 92.68% in the European market and 89.24% in the North American market. Looking at the distributions of benefits, it is concluded that the international market appropriates the greater part of the value generated by the activity.Key words: fishery economy; trade; aquarium fish; Amazonia. RESUMOEste trabalho descreve os canais e as margens de comercialização de cinco espécies de peixes ornamentais capturadas no rio Xingu, estado do Pará, Brasil. A coleta de dados foi realizada de forma intencional e sequencial junto a 51 agentes da cadeia de comercialização, incluindo pescadores, atacadistas e varejistas nacionais e internacionais. Os resultados indicam que as espécies ornamentais podem passar por até seis agentes de comercialização antes do consumidor final. O acari picota ouro (Scobinancistrus aureatus) é a espécie mais valorizada no mercado, chegando a ser vendida ao consumidor final pelo preço unitário de R$ 543,00, um aumento de 1.361% no mercado norte americano e 1.527% no mercado europeu em relação ao preço da exportação brasileira. As margens de comercialização são elevadas: 92,68% no mercado europeu e 89,24% no mercado norte americano. Observando as distribuições de benefícios, conclui-se que o mercado internacional se apropria da maior parcela do valor gerado pela atividade.

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“…Among the Amazonian ornamental fish taxa, the Loricariidae stands out as the most important family, in which the Hypancistrus zebra Isbrücker & Nijssen, , popularly known as zebra pleco is included. This species has great economic and biological importance for the Xingu River basin and there is an unmet demand for the development of captive breeding technology (Ramos, Araújo, Prang, & Fujimoto, ). The zebra pleco is a vulnerable and critically endangered endemic species to the Xingu river (Normative Instruction 05/2004 of the Environment Ministry, Brazil), being protected under the Decree Law 802/2008 issued by the Environment Secretariat of Pará State.…”

Section: Introductionmentioning

confidence: 99%

“…The high market value of fish from the Loricariidae family has boosted the search for improved captive breeding technologies (Gonçalves et al, ), yet relatively few breeding protocols are available for the commercial production of these species (Ramos et al, ). The captive breeding of zebra pleco is important not only from a preservation perspective, that is, for the protection of natural fish stocks, but also for the supply of the ornamental fish market which is under constant expansion worldwide (ITC, ; MDIC, ).…”

Section: Introductionmentioning

confidence: 99%

Feed management and stocking density of the endangered wild zebra pleco: Implications for captive breeding

et al. 2019

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Due to the economic potential of Hypancistrus zebra in the ornamental fish market and its current classification as an endangered species in its natural occurrence sites, the present study sought to determine a suitable feed management strategy and stocking density to allow for an adequate captivity maintenance of this fish species. Three experiments were conducted as follows: (1) feed preference (artemia Artemia sp., shrimp Litopenaeus vannamei, fish Cynoscion spp. or mussel Perna perna); (2) determination of feeding rate (5% and 10% live weight day−1) and frequency (1, 2 or 3 meals. Day−1); and (3) evaluation of stocking density (0.25, 0.50, 1.00 and 2.00 g/L). Zebra pleco did not present the characteristic buccal scraping behaviour on the feed, commonly seen in other Loricariids. Artemia was the preferred diet followed by fish, shrimp and mussels. The frequency of two daily meals and the feeding rate of 10% live weight day−1 allowed for an improved zootechnical performance. Zebra pleco showed enhanced specific growth rate at the density of 2 g/L. Our results suggest that, to improve the zebra pleco rearing conditions, it should be maintained at a density of 2 g/L, fed two daily meals at a feeding rate of 10% live weight day−1. These findings correspond to useful information for an adequate management of this species and could assist in the supply of healthy specimens to the ornamental fish market as well for the restocking of declining wild populations.

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Ornamental fish of economic and biological importance to the Xingu River

Cited by 21 publications

References 0 publications

Reproductive biology of the tiger pleco Panaqolus tankei (Loricariidae) in a lentic system of the Amazon Basin

Reproductive biology of the tiger pleco Panaqolus tankei (Loricariidae) in a lentic system of the Amazon Basin

Cadeia comercial de peixes ornamentais do Rio Xingu, Pará, Brasil

Feed management and stocking density of the endangered wild zebra pleco: Implications for captive breeding

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