Rezagholinejad Sadaf, Arshad Aziz, Amin S M Nurul, Ara Roushon
J Environ Biol. 2016 Jul;37(4 Spec No):697-703.
The composition of fish larvae and their diversity in different habitats are very important for fisheries management. Larval fishes were investigated in a mangrove estuary of Marudu Bay, Sabah, Malaysia from October 2012 to September 2013 at five different sites. Monthly samples of fish larvae were collected at five sampling sites by a plankton net with a mouth opening of 40.5 cm in diameter. In total, 3879 larval fish were caught in the investigated area. The mean density of ichthyoplankton at this area was 118 larvae/100 m(3). The fish larval assemblage comprised of 20 families whereas 13 families occurred at St1, 16 at St2, 16 at St3, 12 at St4 and 16 at St5. The top major families were Sillaginidae, Engraulidae, Mugilidae and Sparidae with Sillaginidae consisted 44% of total larval composition. St3 with 143 larvae/100 m(3) had the highest density amongst the stations which was due to higher abundance of Sillaginidae. Shannon-Wiener diversity index represented significant variation during monsoon and inter-monsoon seasons, peaking in the months December-January and May-June. However, Shannon-Wiener index, evenness and family richness showed significant differences among stations and months (p < 0.05).
鱼类幼体的组成及其在不同栖息地的多样性对于渔业管理非常重要。2012年10月至2013年9月期间，在马来西亚沙巴州马鲁杜湾的一个红树林河口的五个不同地点对幼体鱼类进行了调查。通过一个口径为40.5厘米的浮游生物网在五个采样点每月采集鱼类幼体样本。在调查区域总共捕获了3879尾幼体鱼。该区域浮游鱼类的平均密度为118尾幼体/100立方米。鱼类幼体组合由20个科组成，其中13个科出现在站点1，16个科出现在站点2，16个科出现在站点3，12个科出现在站点4，16个科出现在站点5。主要的科是银鲈科、鳀科、鲻科和鲷科，其中银鲈科占幼体总组成的44%。站点3的密度最高，为143尾幼体/100立方米，这是由于银鲈科的丰度较高。香农-维纳多样性指数在季风和季风间期呈现出显著变化，在12月至1月和5月至6月达到峰值。然而，香农-维纳指数、均匀度和科丰富度在站点和月份之间存在显著差异（p < 0.05）。
