Relação peso-comprimento e fator de condição de &lt;em&gt;Cichla kelberi&lt;/em&gt; (Perciformes, Cichlidae) introduzidos em um lago artificial no Sudeste brasileiro

Gomiero, Leandro Muller; Villares, Gilberto Aparecido; Naous, Felipe

doi:10.4025/actascibiolsci.v30i2.300

Cited by 16 publications

(20 citation statements)

References 2 publications

(5 reference statements)

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“…Weight-length relationship is used for estimating the weight corresponding to a given length (Gomiero & Braga, 2003;Froese, 2006;Gomiero et al, 2008) and may be also used to determine possible differences between separate unit stocks of the same species. The condition factor is used for comparing the body condition, gonadal development, fatness, or welfare of fish, based on the assumption that heavier fish of a given length are in better condition (Gomiero & Braga, 2003;Froese, 2006).…”

Section: Introductionmentioning

confidence: 99%

Weight-length relationship, condition factor and blood parameters of farmed Cichla temensis Humboldt, 1821 (Cichlidae) in central Amazon

et al. 2011

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Farming of native carnivore fish species has drawn attention due to their promising use in aquaculture. Among these species, tucunaré of the genus Cichla stand out, them being of high economical interest for sport fishing and Amazon's industry of ornamental fish. The present study describes the weight-length relationship (WLR), relative condition factor (Kn), red blood cell parameters, thrombocytes and leukocytes count of Cichla temensis Humboldt, 1821, farmed in central Amazon. Fish that underwent food training during fingerling culture received extruded ration containing 45% of crude protein during fattening, and had Kn with values from 0.925-1.199, which indicated good health condition during the culture. The equation obtained from the WLR was W = 0.0073Lt 3.1435 , indicating an isometric growth, which is the desirable for fish of fish farm. Red blood cell counts, total thrombocyte and leukocyte counts, hematocrit, hemoglobin concentration, mean corpuscular volume (MCV), concentration of mean corpuscular hemoglobin (MCHC), lymphocytes, monocytes and neutrophils had intra-specific variation. A significant (p<0.001) positive correlation of the red blood cells number with the hemoglobin concentration and hematocrit was found. These are the first sets of blood parameters for C. temensis and could be used as reference for comparison in further studies to evaluate the health status of this fish in different environments, because assessment of these parameters may be used as quick tool for diagnosing diseases, stress and malnutrition.A criação de peixes carnívoros nativos vem recebendo grande atenção devido ao promissor uso na aquicultura. Entre estes peixes destacam-se os tucunarés do gênero Cichla, de grande interesse para a pesca esportiva e a indústria de peixes ornamentais da Amazônia. O presente estudo descreve a relação peso-comprimento, fator de condição relativo (Kn) e parâmetros sanguíneos do tucunaré Cichla temensis Humboldt, 1821 cultivado na Amazônia central. Os peixes submetidos a treinamento alimentar na alevinagem receberam ração extrusada contendo 45% de proteína bruta na engorda e tiveram Kn variando de 0,925-1,199, indicando boas condições de higidez no cultivo. A equação obtida da relação peso-comprimento foi P = 0,0073.Ct 3,1435 , indicando crescimento do tipo isométrico, que é o mais desejável para peixes em uma piscicultura. O número de eritrócitos, trombócitos e leucócitos totais, hematócrito, concentração de hemoglobina, volume corpuscular médio (VCM), concentração da hemoglobina corpuscular média (CHCM), linfócitos, monócitos e neutrófilos mostrou variação intra-específica. Foi observada correlação positiva significativa (p<0,001) do número de eritrócitos totais com a concentração de hemoglobina e o hematócrito. Estes foram os primeiros resultados sobre parâmetros sanguíneos de C. temensis e poderão ser usados como referência para comparação em estudos futuros para avaliar o estado de saúde deste peixe em diferentes ambientes, pois a medida destes parâmetros pode ser usada como ferramen...

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Section: Introductionmentioning

confidence: 99%

Weight-length relationship, condition factor and blood parameters of farmed Cichla temensis Humboldt, 1821 (Cichlidae) in central Amazon

et al. 2011

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“…Studies on the reproduction of Cichla introduced into tropical reservoirs have been done on C. ocellaris (Zaret, 1980;Magalhães et al, 1996), C. monoculus (Chellappa et al, 2003;Gomiero & Braga, 2004) and Cichla kelberi Kullander & Ferreira (Souza et al, 2008). Other studies address ecological aspects of Cichla in native (Hoeinghaus et al, 2006) and exotic environments (Gomiero & Braga, 2003;Gomiero et al, 2008). Considering the lack of studies about the peacock bass C. piquiti, the aim of this work was to analyze the reproductive biology of this exotic species in order to evaluate its adaptation capacity in a Neotropical reservoir.…”

Section: Introductionmentioning

confidence: 99%

Reproductive biology of the peacock bass Cichla piquiti (Perciformes: Cichlidae), an exotic species in a Neotropical reservoir

et al. 2009

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To analyze the reproductive biology of the peacock bass Cichla piquiti, 361 specimens were collected bimonthly in the Itumbiara Reservoir, southeast Brazil, from December 2004 to November 2005. Males and females in reproductive activity occurred during almost the entire year, with reproductive peak occurring before the beginning of the rains when the water temperature remained low, indicating that these environmental variables do not directly influence in the reproduction of C. piquiti. The long reproductive period, partially spent ovaries contained postovulatory follicles and oocytes in all developmental stages, indicate asynchronous development of oocytes and multiple spawning. The mean total length and body weigth were, respectively, 38.2 ± 7 cm and 965.0 ± 654.0 g for males and 37.4 ± 6.1 cm and 899.0 ± 495.0 g for females, statistically showing no sexual dimorphism in size. The smallest male and female found in advanced maturation stage measured 31.0 cm and 29.0 cm of total length, respectively. The body condition (K) of males and females did not present significant differences during the reproductive cycle and the slope (b) of the length-weight relationship was 3.22, suggesting that reproduction and the annual hydrology cycle do not interfere in the health condition. Cichla piquiti is an exotic piscivore fish that is well adapted to this Neotropical reservoir, which exhibits environmental conditions considerably different from its original habitat. This study indicates that the species presents plasticity in reproduction and in allocation of resources, probably due the aseasonality of the reservoir and the exploitation of native species.Para analisar a biologia reprodutiva do tucunaré Cichla piquiti foram coletados bimestralmente 361 exemplares no reservatório de Itumbiara, sudeste do Brasil, no período de dezembro/2004 a novembro/2005. Machos e fêmeas em atividade reprodutiva ocorreram durante quase todo ano, com pico reprodutivo antes do início das chuvas, quando a temperatura da água permanecia ainda baixa, indicando que estas variáveis ambientais não influenciaram diretamente na reprodução de C. piquiti. O longo período reprodutivo, ovários parcialmente desovados contendo folículos pós-ovulatórios e ovócitos em todos os estádios de desenvolvimento, indicaram desenvolvimento assincrônico dos ovócitos e desova múltipla. A média de comprimento total e peso corporal foram, respectivamente, 38,2 ± 7,0 cm e 965,0 ± 654,0 g para machos e 37,4 ± 6,1 cm e 899,0 ± 495,0 g para fêmeas, estatisticamente não mostrando dimorfismo sexual em tamanho. Os menores exemplares, macho e fêmea, capturados no estádio de maturação avançada mediram 31,0 cm e 29,0 cm de comprimento total, respectivamente. O fator de condição (K) de machos e fêmeas não apresentou diferenças significativas durante o ciclo reprodutivo e o coeficiente angular (b) da relação peso-comprimento foi 3,22, sugerindo que a reprodução e o ciclo hidrológico anual não interferem na condição de saúde. Cichla piquiti é um peixe piscívoro exótico que está bem ad...

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“…Thus, the time difference from maturation of the environments and their ecological differences must be responsible for the distinct structures in length. The different sizes of the Reservoir and of the lake cannot be disregarded, with greater stability and amount of resources in the largest (reservoir) and a large density population of peacock bass with few resources in the smallest (lake) (Gomiero and Braga, 2004b;Gomiero et al, 2008). The cohorts were formed in the summer and autumn, shortly after the peak breeding season.…”

Section: Resultsmentioning

confidence: 99%

Growth and mortality of Cichla spp. (Perciformes, Cichlidae) introduced in Volta Grande Reservoir (Grande River) and in a small artificial lake in Southeastern Brazil

et al. 2010

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The growth and mortality parameters were estimated through the analysis of length frequency distribution for species of Cichla spp. introduced into a lake in Leme (SP), and in Volta Grande reservoir (SP-MG). In Leme, Cichla kelberi presented larger frequency in the inferior classes of lengths, larger instantaneous rate of natural mortality, and smaller number of cohorts than C. kelberi and C. piquiti in Volta Grande. The values of growth performance obtained for the species were similar, corroborating the validity of the estimated growth and mortality parameters. The increase of the growth rate in small and less diverse environments occurs due to predation. The genus Cichla adapts well in locations in which it is introduced, however this adaptation shows itself to be strongly adjusted to each particular location, determining great plasticity and establishment capacity.

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Relação peso-comprimento e fator de condição de <em>Cichla kelberi</em> (Perciformes, Cichlidae) introduzidos em um lago artificial no Sudeste brasileiro

Cited by 16 publications

References 2 publications

Weight-length relationship, condition factor and blood parameters of farmed Cichla temensis Humboldt, 1821 (Cichlidae) in central Amazon

Weight-length relationship, condition factor and blood parameters of farmed Cichla temensis Humboldt, 1821 (Cichlidae) in central Amazon

Reproductive biology of the peacock bass Cichla piquiti (Perciformes: Cichlidae), an exotic species in a Neotropical reservoir

Growth and mortality of Cichla spp. (Perciformes, Cichlidae) introduced in Volta Grande Reservoir (Grande River) and in a small artificial lake in Southeastern Brazil

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