Diaz-Ruiz Silvia, Cano-Quiroga Enrique, Aguirre-León Arturo, Ortega-Bernal Raúl
Lab. Ictiología y Ecología Costera, Depto. Hidrobiología, UAM-Iztapalapa, Apdo. Postal 55-535, México.
Rev Biol Trop. 2004 Mar;52(1):187-99.
In the Chantuto-Panzacola system, Chiapas, México, a study of a fish community was carried out between March and November of 1997. From a total of 1456 fish collected, 31 species, 25 genera and 19 families had been identified. The diversity and abundance were high in March with H'= 2.67 bits/ind, D = 3.89 sp/ind, biomass 1.88 g/m2. density 0.25 ind/m2 and average weight 7.55 g/ind. Significant differences were found between the ecological parameters and the environmental variables of the ecosystem in the months of study (ANOVA and Tukey, p < 0.05). The multiple discriminant analysis showed that the temperature and the salinity was the most important factors in the variation of the community. The frequency analysis and spatial distribution of the fish allowed to define fish assemblages formed by several groups of species that inhabits the system. Nine dominant species were defined for the ecosystem, representing the 71% in number and the 76.4% in weight of the total catch, Achirus mazatlanus, Caranx hippos, Cathorops fuerthi, Centropomus robalito, Cichlasoma macracanthum, Cichlasoma trimaculatum, Gobiomorus maculatus, Gobionellus microdon and Lile gracilis.
在墨西哥恰帕斯州的尚图托 - 潘萨科拉系统中，于1997年3月至11月对鱼类群落进行了一项研究。在总共收集的1456条鱼中，已鉴定出31个物种、25个属和19个科。3月份的多样性和丰度较高，香农多样性指数H' = 2.67比特/个体，物种丰富度D = 3.89种/个体，生物量1.88克/平方米，密度0.25个体/平方米，平均体重7.55克/个体。在研究的几个月中，生态参数与生态系统的环境变量之间存在显著差异（方差分析和Tukey检验，p < 0.05）。多重判别分析表明，温度和盐度是群落变化的最重要因素。鱼类的频率分析和空间分布有助于确定由栖息在该系统中的几组物种组成的鱼类组合。为该生态系统定义了9种优势物种，它们占总捕获量数量的71%，重量的76.4%，分别是马萨特兰无臂鳎、军曹鱼、富氏下口鲶、罗氏尖塘鳢、大棘丽体鱼、三斑丽体鱼、黄斑异鳞鳚、小眼异齿鳚和细纹鳓。
