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首页> 外文期刊>Estuarine Coastal and Shelf Science >Feeding ecology, population structure and distribution of Pomatoschistus microps (Kroyer, 1838) and Pomatoschistus minutus (Pallas, 1770) in a temperate estuary, Portugal
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Feeding ecology, population structure and distribution of Pomatoschistus microps (Kroyer, 1838) and Pomatoschistus minutus (Pallas, 1770) in a temperate estuary, Portugal

机译：葡萄牙温带河口的Pomatoschistus microps（Kroyer，1838）和Pomatoschistus minutus（Pallas，1770）的摄食生态学，种群结构和分布

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摘要

The feeding ecology, growth and spatial—temporal abundance and distribution of Pomatoschistus microps (Kroyer, 1838) and Pomatoschistus minutus (Pallas, 1770) were studied between June 2003 and June 2004, based on beam trawl surveys and macrobenthic samples conducted in the Mondego estuary, Portugal. Polychaetes, molluscs and amphipods were the most important items in the diet of P. microps, while for P. minutus the dominant preys were polychaetes, mysids and decapods. Pomatoschistus microps' recruitment lasted for six months and was composed of three new cohorts per year. Pomatoschistus minutus had an uncommon long reproductive season, from April to November, and population seg-regation was found, corresponding to the two reproductive peaks. Populations of both species were composed mainly of 0-group individuals with sand gobies presenting a more extended life span. In the Mondego estuary, inter- and intra-specific spatial segregation occurred between the two species and between the 0 + and 1 + age groups of P.microps.
机译：在2003年6月至2004年6月之间，根据束拖网调查和在蒙德戈河口进行的大型底栖动物采样研究了Pomatoschistus microps（Kroyer，1838）和Pomatoschistus minutus（Pallas，1770）的摄食生态学，生长和时空丰度及分布。 ，葡萄牙。多毛类，软体动物和两栖类动物是肺炎双球菌饮食中最重要的食物，而小毛体育中的主要猎物是多毛类，类腮腺和十足动物。 Pomatoschistus microps的招募持续了六个月，每年由三个新的队列组成。从4月到11月，小oma虫（Pomatoschistus minutus）有一个罕见的漫长的繁殖季节，并且发现了种群隔离调节，对应于两个繁殖高峰。这两个物种的种群主要由0组个体组成，而沙go的寿命更长。在Mondego河口，两个物种之间以及P.microps的0 +和1 +年龄组之间发生种间和种内空间隔离。

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