OPEN ACCESS PEER-REVIEWED | RESEARCH ARTICLE

Main Article Content

Authors

nFN Djumanto
N. Probosunu

Abstract

Biological species diversity in natural habitats is a source of germplasm, which is invaluable. The purpose of this research was to determine the biotic diversity of fishes in upstream of Opak River. Fish sampling was done by using electrofishing. Each sampling was done for one hour along the river as far as about 1 km. All samples were preserved in 5% formaldehyde. Each sample was identified and measured their length and weight. Data were analyzed descriptively in the form of tables and figures. Biotic diversity was analyzed by biology index. The results showed that number of fish found at some 12 species, namely Channa striata, Clarias batrachus, Monopterus albus, Nemacheilus fasciatus, Nemacheilus sp., Oreochromis sp., Poecilia latipinna, Poecilia reticulata, Puntius binotatus, Barbonymus gonionotus, Oreo-chromis niloticus, and Xiphophorus helleri. The most dominant of catching was composed of barred loach (N. fas-ciatus), spotted barb (P. binotatus), and guppy (P. reticulata). Total catch of fish per hour ranged from 111.7 g and 701.7 g. There was inverse relationship between prey and predatory fish population. As the biomass of predatory fish was very low, the biomass of preyfish was very high, which was dominated by small fish of low value, vise verca.The diversity ranged from 1.44 to 1.93, homogeneity ranged from 0.60 to 0.82, the dominance ranged from 0.19 to 0.39. Relatively low diversity index showed the fishing intensity was very high.The fish diversity in environmental was in the category of being depressed. AbstrakKeanekaragaman hayati suatu spesies di habitatnya merupakan sumber plasma nutfah yang sangat berharga. Tujuan penelitian untuk mendapatkan informasi keragaman biotik ikan yang habitatnya di hulu Sungai Opak. Pengambilan con-toh ikan dilakukan dengan kejutan (electrofishing). Setiap pengambilan contoh ikan dilakukan selama satu jam menyusuri sungai sejauh sekitar 1 km. Semua contoh ikan diawetkan dalam formalin 5%. Setiap contoh ikan diidentifikasi dan diukur panjang dan ditimbang bobotnya. Data dianalisis secara deskriptif dalam bentuk tabel dan gambar. Keanekaragaman biotik dianalisis dengan indeks biologi. Hasil penelitian menunjukkan bahwa jumlah ikan yang ditemukan di hulu Sungai Opak sebanyak 12 spesies, yaitu Channa striata, Clarias batrachus, Monopterus albus, Nemacheilus fas-ciatus, Nemacheilus sp., Oreochromis sp., Poecilia latipinna, Poecilia reticulata, Puntius binotatus, Barbonymus go-nionotus, Oreochromis niloticus, dan Xiphophorus helleri. Hasil tangkapan yang paling dominan terdiri atas uceng (N. fasciatus), wader cakul (P. binotatus), dan ikan seribu (P. reticulata). Hasil tangkapan ikan per jam berkisar dari 111,7 g dan 701,7 g. Ada hubungan terbalik antara mangsa dan populasi ikan predator. Ketika biomassa ikan predator sangat rendah, maka biomassa ikan mangsa sangat tinggi, yang didominasi oleh ikan kecil bernilai rendah, demikian sebaliknya. Keanekaragaman berkisar 1,44-1,93; homogenitas berkisar 0,60-0,82; dan dominansi berkisar 0,19-0,39. Indeks keanekaragaman ikan relatif rendah menunjukkan tekanan dan intensitas penangkapan ikan sangat tinggi.

Keywords:
biodiversity , electrofishing , fish , Opak , upstream.

Downloads article

Download data is not yet available.

Article Details

Copyright
   

Copyright (c) 2017 Jurnal Iktiologi Indonesia

  Authors who publish with this journal agree to the following terms:  
  a.)
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.  
  b.) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.  
  c.) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).  
       
  Creative Commons License
Jurnal Iktiologi Indonesia by Masyarakat Iktiologi Indonesia (MII) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Permissions beyond the scope of this license may be available at https://jurnal-iktiologi.org
 

 

References

Bone Q & Moore RH. 2008. Biology of fishes. Third Edition. Taylor & Francis Group. New York. 478 p.

Biswas SP. 1993. Manual of methods in fish biology. SA Publishers, Ltd. New Delhi. 157 p.

Djumanto, Setyobudi E, Sentosa A, Budi R, Nirwati N. 2008. Reproductive biology of the yellow rasbora (Rasbora lateristriata) inhabitat of the Ngrancah River, Kulon Progo regency. Jurnal Perikanan (J. Fis.Sci.), 10 (2):261-275.

Helfman G. 2007. Fish conservation, A guide to understanding and restoring global aquatic biodiversity and fishery resources. Island Press, Washington. 584 p.

Kottelat M, Whitten AJ, Kartikasari SN, Wirjoatmodjo S. 1993. Freshwater fishes of Western Indonesia and Sulawesi. Periplus-EMDI, Hongkong. 289 p.

Nakabo T. 2002. Fishes of Japan with pictorial keys to the species. English Edition. Tokai University Press. Tokyo. 1749 p.

Nelson JS. 2006. Fishes of the world. Fourth edition. John Wiley & Sons, Inc. New York. 601 p.

Odum EP. 1998. Dasar-dasar ekologi. (Terjemahan Samingan T & Srigandono B). Edisi Ketiga. Gadjah Mada University Press. Yogyakarta. 697 hlm.

Rinco PA, Hughesand NF, Grossman GD. 2000. Landscape approaches to stream fish ecology, mechanistic aspects of habitat selection and behavioral ecology. Introduction and commentary. Ecology of Freshwater Fish, 9:1-3

Sentosa AA & Djumanto. 2010. Habitat pemi-jahan ikan wader pari (Rasbora lateristriata) di Sungai Ngrancah, Kabupaten Kulon Progo. Jurnal Iktiologi Indonesia, 10(1):55-63.

Setyobudi E. 2000. Structure and potential reproduction of nile tilapia (Oreochromis sp.) population in Sermo Reservoir. Master Tesis. Sekolah Pascasarjana UGM Yogyakarta.

Tolonen KT, Karjalainen J, Staff S, Leppa M. 2000. Individual and population-level food consumption by cyprinids and percids in mesotrophic lake. Ecology of Freshwater Fish, 9:153-162.

Triyatmo, Rustadi B, Djumanto, Susilo B. 1997. Studi sumber daya perikanan di Waduk Sermo. Laporan penelitian. 65 hlm.

Welcomme R. 2001. Inland fisheries ecology and management. Fishing News Books. Carlton, Victoria. 358 p.