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RESEARCH ARTICLE
Aktivitas jantung ikan nila, Oreochromis niloticus (Linnaeus, 1758) pada kecepatan renang berbeda yang dipantau dengan elektrokardiograf (EKG)
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Abstract
The heart rate activities of nile tilapia (Oreochromis niloticus) (average±s.d. = 14.80±1.20 cm Body Length (BL), n = 20) were measured by electrocardiograph (ECG) at various speed (5.97-55.64 cm sec-1) in PVC made flume tank. The data of heartbeat rate were collected by oscilloscope and recorded by video camera for deep analyzing. The incremental of heart rate was analyzed by relative heart rate, i.e. heartbeat rate during exercise divided to heartbeat rate control. The result shows that the heartbeat rate of nile tilapiawas 46.75±1.13 beatsmin-1 in control. It was not change at swimming speed of 5.97-13.83 cm sec-1. The threshold of heartbeat rate was increased at swimming speed of 17.67-23.56 cmsec-1. The heartbeat rate was significant increase at swimming speed higher than 35.31 cmsec-1; it could reach 3.85 higher than control value. The heartbeat rate activities are deeply discussed in relation to the various swimming speed level in this paper.
Abstrak
Aktivitas detak jantung ikan nila (Oreochromis niloticus) (rata-rata ± sb.= 14,80±1,20 cm panjang tubuh (PT), n = 20) diukur dengan menggunakan electrokardiograf (EKG) pada kecepatan renang yang berbeda (5,97-55,64 cm det-1) di da-lam tangki berarus. Data detak jantung ikan dikumpulkan dengan menggunakan oscilloscope, serta direkam dengan menggunakan kamera video untuk analisis lebih rinci. Kenaikan laju detak jantung ikan nila dianalisis dengan menggunakan persamaan relative heart rate, yaitu detak jantung ikan sedang berenang dibagi dengan detak jantung kontrol. Hasil pengamatan menunjukkan detak jantung ikan nila sebagai control ialah 46,75±1,13 detak men-1. Detak jantung ikan nila tersebut tidak mengalami perubahan pada saat ikan berenang pada kecepatan 5,97-13,83 cm det-1. Detak jantung ikan nila tersebut mulai mengalami kenaikan pada saat ikan nila berenang pada kecepatan 5,97-13,83 cm det-1. Se-cara signifikan detak jantung ikan nila naik pada kecepatan renang lebih dari 35,31 cm det-1, kenaikan detak jantung tersebut bisa mencapai 3,85 kali lebih tinggi daripada nilai kontrol. Aktivitas detak jantung ikan nila yang berhubungan dengan kecepatan renang yang berbeda akan didiskusikan dalam makalah ini secara mendalam.
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References
He P, Wardle CS. 1988. Endurance at intermediate swimming speeds of Atlantic mackerel, Scomber scombrus L., herring, Clupea harengus L., and saithe, Pollachius virens L. Journal of Fish Biology, 33(2):255-266.
Korsmeyer KE, Chin Lai N, Shadwick RE, Graham JB.1997. Heart rate and stroke volume contributions to cardiac output in swimming yellow fin tuna: response to exercise and temperature. Experimental Biology, 200(14):1975-1986.
Nofrizal, Yanase K, Arimoto T. 2008. Swimming exercise and recovery for jack mackerel Trachurus japonicus, monitored by ECG measurements. Proceedings of the 5th World Fisheries Congress (CD-ROM Ver.).
Nofrizal.2009. Behavioural physiology on swimming performance of jack mackerel Trachurus japonicus in capture process. Doctoral dissertation. Tokyo University of Marine Science and Technology. 116 p.
Nofrizal, Yanase K, Arimoto T. 2009. Effect of temperature on the swimming endurance and postexercise recovery of jack mackerel Trachurus japonicus, as determined by ECG monitoring. Fisheries Science, 75(6): 1369-1375.
Nofrizal, Arimoto T. 2010. The stress condition of fish in active sampling gears process by ECG monitoring. Proceeding Fish Sampling with Active Methods (FSAM) September 8-11th, 2010. Ceske Budejovic, Czech Republic.
Nofrizal, Arimoto T. 2011. ECG monitoring on swimming endurance and heart rate performance of jack mackerel Trachurus japoni-cus for repeated exercise. Asian Fisheries Science, 24(1):78-87.
Nofrizal, Ahmad M. 2011. Peran kajian dan kemampuan renang ikan baung (Hemibagrus sp.) untuk teknologi penangkapan ikan dan usaha budidaya. Laporan Hasil Penelitian Fundamental. Lembaga Penelitian Universitas Riau. 50 hlm.
Nofrizal, Ahmad M, Syofyan I. 2011. Tingkah laku dan kemampuan renang ikan selais (Cryptopterus sp.). Jurnal Iktiologi Indonesia, 11(2):99-106.
Priede IG. 1974. The effect of swimming activity and section of the vagus nerves on heart rate in rainbow trout. Experimental Biology, 60(22):305-319.
Wardle CS.1993. Fish behaviour and fishing gear. In: Pitcher TJ (ed.). The behaviour of teleost fishes, 2nd edition. Chapman and Hall, London. pp. 609-643.
Xu G, Arimoto T, Inoue M.1993. Red and white muscle activity of the jack mackerel Trachurus japonicus during swimming. Nippon Suisan Gakkaishi, 59:745-751.