SPECIES COMPOSITION OF FRESHWATER EELS (Anguilla spp.) IN EIGHT RIVERS FLOWING TO PALABUHANRATU BAY, SUKABUMI, INDONESIA
Authors: Hakim Agus Alim , Kamal M Mukhlis , Butet Nurlisa A , Affandi Ridwan 
Published: October 2017

<p><em><span style="text-decoration: underline;"></span>Freshwater eel </em>(<em><span style="text-decoration: underline;">Anguilla</span></em><em></em> spp.) <em>is a</em><em> catadromus fish </em><em>that </em><em>migrate</em><em>s</em><em> from freshwater </em><em>in</em><em>to </em><em>seawater</em><em> for spawning and return to freshwater </em><em>during larvae stage </em><em>to grow. Th</em><em>e objective of this </em><em>study was </em><em>to determine</em><em> species composition of tropical freshwater eels </em><em>based on morphology </em><em>collected from several rivers </em><em>flowing in to the </em><em>Palabuhan</em><em> R</em><em>atu Bay. Young, adult, and g</em><em>lass eels were caught in August 2014 until Desember 2014.</em><em> G</em><em>lass eels </em><em>were only</em><em> caught in Cimandiri River. </em><em>Freshwater eels </em><em>were </em><em>classified by ano-dorsal length (AD) divided by total length (TL), cluster analysis</em><em>,</em><em> and discriminant analysis based on morphometric data. The results </em><em>showed</em><em> different AD/TL of young and adult, i.e.</em><em>,</em><em> 1.93</em><em>±0</em><em>.</em><em>51 for </em><em><span style="text-decoration: underline;">A</span></em><em>. </em><em><span style="text-decoration: underline;">b</span></em><em><span style="text-decoration: underline;">icolor</span></em><em></em><em> <span style="text-decoration: underline;">bicolor</span></em><em>, and </em><em>16</em><em>.</em><em>99±0</em><em>.</em><em>65 for </em><em><span style="text-decoration: underline;">A</span></em><em>. <span style="text-decoration: underline;">marmorata</span>, and three different AD/TL of glass eels</em><em> i.e.,</em><em>1</em><em>.</em><em>72±1</em><em>.</em><em>05 for </em><em><span style="text-decoration: underline;">A</span></em><em>. </em><em><span style="text-decoration: underline;">b</span></em><em><span style="text-decoration: underline;">icolor</span></em><em></em><em> <span style="text-decoration: underline;">bicolor</span></em><em></em><em>6</em><em>.</em><em>60±1</em><em>.</em><em>79 for </em><em><span style="text-decoration: underline;">A</span></em><em>. </em><em><span style="text-decoration: underline;">nebulosa </span></em><em></em><em><span style="text-decoration: underline;">nebulosa</span></em><em>, and </em><em>15</em><em>.</em><em>07±1</em><em>.</em><em>04 for </em><em><span style="text-decoration: underline;">A</span></em><em>. </em><em><span style="text-decoration: underline;">m</span></em><em><span style="text-decoration: underline;">armorata</span></em><em>. </em><em>Cluster analysis showed three groups of population characters of young and adult eel</em><em>s</em><em> i.e. <span style="text-decoration: underline;">A</span>. </em><em><span style="text-decoration: underline;">b</span></em><em><span style="text-decoration: underline;">icolor</span> </em><em></em><em><span style="text-decoration: underline;">bicolor</span></em><em> (2 groups) and <span style="text-decoration: underline;">A</span>. <span style="text-decoration: underline;">marmorata</span> (1 group). Discriminant analysis showed three groups of glass eels population </em><em>i.e., </em><em><span style="text-decoration: underline;">A</span></em><em>. </em><em><span style="text-decoration: underline;">b</span></em><em><span style="text-decoration: underline;">icolor</span></em><em></em><em> <span style="text-decoration: underline;">bicolor</span></em><em>, <span style="text-decoration: underline;">A</span>. </em><em><span style="text-decoration: underline;">n</span></em><em><span style="text-decoration: underline;">ebulosa </span></em><em></em><em><span style="text-decoration: underline;">nebulosa</span></em><em>, and <span style="text-decoration: underline;">A</span>. <span style="text-decoration: underline;">marmorata</span>. Morphological identification show</em><em>ed</em><em> that young and adult eel</em><em>s</em><em> in Cibareno and Citepus river</em><em>s</em><em> ha</em><em>d</em><em> two species</em><em> i.e., </em><em><span style="text-decoration: underline;">A.</span> <span style="text-decoration: underline;">bicolor</span> <span style="text-decoration: underline;">bicolor</span></em><em> and <span style="text-decoration: underline;">A</span>. </em><em><span style="text-decoration: underline;">m</span></em><em><span style="text-decoration: underline;">armorata</span></em><em>. G</em><em>lass eels from Cimandiri river ha</em><em>d</em><em> three species</em><em> i.e.</em><em>, <span style="text-decoration: underline;">A</span>. </em><em><span style="text-decoration: underline;">b</span></em><em><span style="text-decoration: underline;">icolor</span></em><em></em><em><span style="text-decoration: underline;">bicolor</span></em><em>, <span style="text-decoration: underline;">A</span>. </em><em><span style="text-decoration: underline;">n</span></em><em><span style="text-decoration: underline;">ebulosa</span></em><em></em><em><span style="text-decoration: underline;">nebulosa</span></em><em>, and <span style="text-decoration: underline;">A</span>. <span style="text-decoration: underline;">marmorata</span>.</em><em> </em><em><span style="text-decoration: underline;">A.</span> <span style="text-decoration: underline;">bicolor bicolor</span> </em><em>was found in each rivers and as a dominant species in Palabuhan Ratu Bay.</em></p><em><strong><em>Keywords: </em></strong><em>A. bicolor bicolor</em>, <em>A. marmorata</em>, <em>A. nebulosa nebulosa</em>, <em>species composition</em><br /></em>