Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, CCS Bloco A, Ilha do Fundão, 21941-590, Rio de Janeiro, RJ, Brazil.
J Fish Biol. 2014 Apr;84(4):996-1013. doi: 10.1111/jfb.12340. Epub 2014 Mar 13.
The structure and seasonal dynamics of larvae of the Gobiidae family in the Mucuri Estuary (Bahia, Brazil) were studied for nine consecutive years. Sampling was conducted at three stations in the lower estuary channel, between 2002 and 2010, in relation to season, day and night and tidal variations. A total of 5802 Gobiidae larvae, representing 15 taxa (12 species and three morphotypes), were collected in the Mucuri Estuary during this time. The highest mean ± s.d. density of fish larvae, 54·7 ± 79·8 larvae 100 m(-3), was recorded during the flood tide and night sampling. Ctenogobius boleosoma was the most abundant species (68%), being dominant in the rainy and dry seasons and had a long reproductive period. This species was classed as a marine estuarine-opportunist because it was observed at high frequencies and active larvae entering the estuary between 6·1 and 12·0 mm standard length (L(S)). Gobionellus oceanicus, second in abundance (12%), occurred only in later larval stages but did not use the estuary as a preferred location for spawning, being classed a marine estuarine dependent. Microgobius carri (11%) was represented in all L(S) classes and was resident in the estuary for spawning, remaining there throughout their life cycle. The other species were considered rare due to their low densities and could not be classified in any guild.
在巴伊亚州的穆库里河口（巴西），对 9 年来的虾虎鱼科鱼类幼虫的结构和季节动态进行了研究。2002 年至 2010 年，在下游河口通道的三个站位进行了采样，采样涉及季节、昼夜和潮汐变化。在此期间，在穆库里河口共采集到 5802 尾虾虎鱼科幼虫，代表 15 个分类群（12 个物种和 3 个形态型）。鱼幼虫的最高平均密度 ± 标准偏差为 54.7 ± 79.8 尾 100 m(-3)，记录在涨潮和夜间采样期间。Ctenogobius boleosoma 是最丰富的物种（68%），在雨季和旱季占优势，具有较长的繁殖期。该物种被归类为海洋河口机会主义者，因为在 6.1 到 12.0 毫米标准长度（L(S)）之间，观察到它以高频率和活跃的幼虫进入河口。其次是 Gobionellus oceanicus，丰度为 12%，只出现在较晚的幼虫阶段，但不将河口用作产卵的首选位置，被归类为海洋河口依赖者。Microgobius carri（11%）存在于所有 L(S)类中，并在河口产卵，在其整个生命周期中都留在那里。其他物种由于密度低而被认为是罕见的，无法归入任何一类。
