Ara Roushon, Arshad Aziz, Amin S M Nurul, Idris M H, Gaffar Mazlan Abd, Romano Nicholas
J Environ Biol. 2016 Jul;37(4 Spec No):745-54.
Our previous study demonstrated that among different habitat sites (mangrove, estuary, river, seagrass and Open Sea) in Johor Strait, Malaysia, seagrass showed highest family diversity and abundance of larval fish. However, it is unclear whether this was due to difference in habitat complexity or water quality parameters.? To test this, larval fish were collected by using a bongo net equipped with a flow meter by subsurface horizontal towing from different habitats in Johor Strait between October 2007 and September 2008.? Various physico-chemical parameters were measured and then examined for any relationship to fish larvae diversity and abundance. Among the 24 families identified from the sites, seven families (Blenniidae, Clupeidae, Mullidae, Nemipteridae, Syngnathidae, Terapontidae and Uranoscopeidae) were significantly correlated with the tested waters quality parameters.? Salinity showed a positive and negative significant correlation with Clupeidae (p < 0.01) and Uranoscopeidae (p < 0.05), respectively. Terapontidae was significantly correlated with dissolved oxygen (p < 0.01), while both Mullidae and Syngnathidae were significantly correlated with pH (p < 0.05). However, a canonical correspondence analysis test indicated weak overall correlation (36.4%) between larval assemblage and in the seagrass-mangrove ecosystem of Johor Strait, Malaysia. This likely indicates that habitat structure was more important in determining larval abundance (highest in the seagrass habitat) as compared to water quality at the tested sites. This study emphasizes the need to conserve seagrass beds as important nursery grounds for various fish larvae to ensure adequate recruitment and ultimately sustainable fisheries management. ?
我们之前的研究表明，在马来西亚柔佛海峡的不同栖息地（红树林、河口、河流、海草床和公海）中，海草床显示出最高的幼鱼科多样性和丰度。然而，尚不清楚这是由于栖息地复杂性的差异还是水质参数的不同。为了验证这一点，2007年10月至2008年9月期间，通过使用配备流量计的邦戈网在柔佛海峡不同栖息地进行表层水平拖网来收集幼鱼。测量了各种理化参数，然后检查它们与幼鱼多样性和丰度之间的任何关系。在从这些地点鉴定出的24个科中，有七个科（鳚科、鲱科、羊鱼科、金线鱼科、海龙科、裸颊鲷科和后肛鱼科）与测试的水质参数显著相关。盐度分别与鲱科（p < 0.01）和后肛鱼科（p < 0.05）呈显著正相关和负相关。裸颊鲷科与溶解氧显著相关（p < 0.01），而羊鱼科和海龙科均与pH值显著相关（p < 0.05）。然而，典范对应分析测试表明，在马来西亚柔佛海峡的海草 - 红树林生态系统中，幼鱼组合与水质之间的总体相关性较弱（36.4%）。这可能表明，与测试地点的水质相比，栖息地结构在决定幼鱼丰度（海草栖息地中最高）方面更为重要。这项研究强调了保护海草床作为各种幼鱼重要育苗场的必要性，以确保充足的补充量并最终实现可持续渔业管理。
