Amezcua F, Amezcua-Linares F
Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Joel Montes Camarena S/N, Mazatlán, Sin., 82040, Mexico.
Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, 04510, DF, Mexico.
ScientificWorldJournal. 2014 Jan 27;2014:968902. doi: 10.1155/2014/968902. eCollection 2014.
The composition and seasonal changes of the fish assemblage in a coastal lagoon system in southeastern Gulf of California were assessed from December 2001 to July 2005. A total of 20,877 organisms belonging to 191 species and 47 families were analyzed. We determined that almost all the species inhabiting the system were found; however some rare species were not captured in our study. The majority of the species found were demersal but in every season at least one pelagic or benthopelagic species showed high abundances. The moonfish, Selene peruviana, was the most abundant species, whilst the puffer, Sphoeroides annulatus, was the main species in terms of biomass. The species composition changed seasonally; results from the Simpson diversity index and the cumulative species curve show that seasonally almost all the species in the system for a given season were found. These changes were also reflected in the multivariate results. The seasonal variations could be attributed to the migration of species out of the system as they grow and the arrival of new ones, which could also be related to temperature patterns since this environmental factor changes considerably through the year.
2001年12月至2005年7月期间，对加利福尼亚湾东南部一个沿海泻湖系统中的鱼类群落组成和季节性变化进行了评估。共分析了属于47个科191种的20,877个生物体。我们确定，几乎所有栖息在该系统中的物种都已被发现；然而，一些稀有物种在我们的研究中未被捕获。发现的大多数物种是底栖的，但在每个季节至少有一种浮游或底栖-浮游物种数量众多。月鱼（Selene peruviana）是数量最多的物种，而河豚（Sphoeroides annulatus）是生物量方面的主要物种。物种组成随季节变化；辛普森多样性指数和累积物种曲线的结果表明，在季节性方面，几乎发现了给定季节系统中的所有物种。这些变化也反映在多变量结果中。季节性变化可能归因于物种随着生长而迁出该系统以及新物种的到来，这也可能与温度模式有关，因为这一环境因素全年变化很大。
