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Life
History Traits of the Critically Endangered Catfish Eutropiichthys vacha (Hamilton
1822) in the Jamuna (Brahmaputra River Distributary) River, Northern Bangladesh
(Ciri Sejarah Hidup Ikan Keli
Terancam Kritikal Eutropiichthys vacha (Hamilton 1822)
di Sungai Jamuna (Anak Sungai
Brahmaputra), Bangladesh Utara)
Md. Yeamin Hossain1,2 *, Md. Mosaddequr Rahman2, Md. Abu Sayed Jewel2,
Md. Akhtar Hossain2, Ferdous Ahamed1, Anannya Sen Tumpa2,
Elgorban M. Abdallah3 & Jun Ohtomi
1Faculty of Fisheries,
Kagoshima University, 4-20-50 Shimoarata
Kagoshima 890-0056 Japan
2Department of Fisheries,
Faculty of Agriculture, University of Rajshahi
Rajshahi 6205, Bangladesh
3Center of Excellence of
Biotechnology Research, King Saud University
Riyadh 11451, Saudi
Arabia
Diserahkan: 26 Ogos
2011/Diterima: 2 Oktober 2012
ABSTRACT
The critically endangered catfish Eutropiichthys
vacha (Hamilton 1822) is one of the commercially high nutritional valuable
food fish in Asian countries, but the natural populations are seriously
decreasing due to high fishing pressure, leading to an alarming condition and
deserving of high conservation importance. Our study describes some biological
parameters, including sex ratio, length-frequency distribution (LFD),
length-weight relationships (LWRs), length-length
relationships (LLRs), condition factors (Allometric, KA; Fulton’s, KF;
Relative condition, KR; Relative
weight, WR) and form factor (a3.0)
of E. vacha in the Jamuna (Brahmaputra River distributary) River,
northern Bangladesh. A total of 350 specimens ranging from 8.01-16.95 cm TL (total
length) and 1.70-30.38 g BW (body weight) were analyzed in this
study. Sampling was done using traditional fishing gears during March 2010 to
February 2011. The overall sex ratio showed no significant differences from the
expected value of 1:1 (χ2=2.57, p>0.05),
and there was no significant difference in the LFD between
the sexes (p=0.38). The allometric coefficient b for the LWR indicated
isometric growth (~3.00) in males and combined sexes, but negative allometric
growth (<3.00) in females. The results further indicated that the LLRs
were highly correlated (r2 >
0.997; p<0.001). KR showed
significant variations (F=65.11; p<0.01) between male and female; whereas, KF was not significantly different between the sexes (p=0.64).
Also, WR was significantly different from
100 for both sexes (p<0.01), indicating the imbalance habitat with
food availability relative to the presence of predators for E. vacha.
The estimated values of a3.0 were as 0.0060, 0.005
and 0.0054 for males, females and combined sexes of E. vacha. This study
reported the first complete and comprehensive description of life-history
traits for E. vacha from Bangladeshi waters. These results should be
useful for the sustainable conservation of this critically endangered fishery
in Bangladesh and neighboring countries.
Keywords:
Bangladesh; condition factor; Eutropiichthys vacha; length-weight relationship
ABSTRAK
Ikan keli terancam, Eutropiichthys Vacha (Hamilton
1822) adalah salah satu ikan yang menjadi makanan berkhasiat bernilai komersial yang tinggi di negara-negara Asia, tetapi kini mengalami pengurangan populasi semula jadi yang serius akibat tekanan penangkapan yang tinggi, menjurus kepada keadaan yang membimbangkan dan wajar menerima kepentingan pemuliharaan yang tinggi. Penyelidikan kami menerangkan beberapa parameter biologi, termasuk nisbah jantina, panjang-frekuensi pengedaran (LFD), panjang-berat hubungan (LWRs), panjang-panjang hubungan (LLRs), faktor keadaan (‘allometric, KA itu Fulton, KF; keadaan relatif, KR; faktor berat relatif, WR) dan bentuk (a3.0) E. Vacha dalam Sungai Jamuna (Anak Sungai Brahmaputra)
di Bangladesh utara. Sejumlah 350 spesimen yang terdiri daripada 8.01-16.95 cm TL (jumlah panjang) dan 1.70-30.38 g BW (berat badan) telah dianalisis dalam kajian ini. Persampelan telah dilakukan menggunakan peralatan menangkap ikan tradisional pada bulan Mac 2010 hingga Februari 2011. Nisbah jantina keseluruhan menunjukkan tiada perbezaan yang signifikan daripada nilai jangkaan 1:1 (χ2=2,57, p>0.05) dan tidak ada perbezaan yang signifikan dalam LFD antara jantina (p=0.38). Pekali alometri B untuk LWR menunjukkan pertumbuhan isometrik (~3.00) dalam ikan jantan dan ikan jantina gabungan, tetapi pertumbuhan alometri negatif (<3.00) dalam kalangan ikan betina. Hasil kajian juga menunjukkan bahawa LLRs berkait rapat (r2>0,997; p<0.001). KR menunjukkan perbezaan yang signifikan (F=65,11, p<0.01) antara ikan jantan dan betina, manakala, KF tidak berbeza antara jantina (p=0.64). Selain itu, WR adalah berbeza dengan ketara daripada 100 untuk kedua-dua jantina (p<0.01), menunjukkan habitat ketidakseimbangan dengan adanya makanan berbanding dengan kehadiran pemangsa untukE. Vacha. Dianggarkan nilai a3.0 adalah 0.0060, 0.005 dan 0.0054 untuk jantan, betina dan jantina gabunganE. Vacha. Kajian ini merupakan kajian pertama yang lengkap dan komprehensif berkenaan ciri-ciri sejarah hidupE. Vacha dari perairan Bangladesh. Keputusan ini amat berguna untuk pemuliharaan mampan ikan terancam di Bangladesh dan negara-negara jiran.
Kata
kunci: Bangladesh; Eutropiichthys vacha; faktor keadaan; panjang-berat hubungan
RUJUKAN
Anderson, R.O. & Neumann, R.M. 1996.
Length, weight and associated structure indices. In Fisheries Techniques.,
edited by Murphy, B.R. & Willis, W.D. 2nd ed. Bethesda, MD: American
Fisheries Society.
Best, J.L., Ashworth, P.J., Sarker, M.H.
& Roden, J. 2007. The Brahmaputra-Jamuna River, Bangladesh In Large
Rivers: Geomorphology and Management, edited by Gupta, Al. Chichester:
Wiley & Sons Ltd.
Bloch, M.E. 1794. Naturgeschichte der
auslandischen Fische. Berlin Naturg Ausl Fische 8: 1-174.
Conover, D.O. & Kynard, B.O. 1981.
Environmental sex determination: Interaction of temperature and genotype in a
fish. Science 213(4507): 577-579.
Ferraris, C.J. Jr. & Vari, R.P. 2007.
Revision of catfishes of the genus Eutropiichthys, with the description
of two new Species (Siluriformes: Schilbidae). Copeia 4: 866-885.
Froese, R. 2006. Cube law, condition
factor and weight-length relationships: History, meta-analysis and
recommendations. Journal of Applied Ichthyology 22(4): 241-253.
Froese, R. & Pauly, D. (Eds). 2011.
Fish Base. Available at: http://www.fishbase.org. Accessed on 22 February
2011.
Fulton, T.W. 1904. The Rate of Growth
of Fishes. Twenty-second Annual Report, Part III. Edinburgh: Fisheries
Board of Scotland.
Gerritsen, H.D. & McGrath, D. 2007.
Significance differences in the length-weight relationships of neighbouring
stocks can result in biased biomass estimates: Examples of haddock (Melanogrammus
aeglefinus, L.) and whiting (Merlangius merlangus, L.). Fisheries
Research 85(1-2): 106-111.
Gonzalez Acosta, A.F., De La Cruz Aguero,
G. & De La Cruz Aguero, J. 2004. Length-weight relationships of fish
species caught in a mangrove swamp in the Gulf of California (Mexico). Journal
of Applied Ichthyology 20(2): 154-155.
Gupta, B.K., Sarkar, U.K., Bhardwaj, S.K.
& Pal, A. 2011. Condition factor, length-weight and length-length
relationships of an endangered fish Ompok pabda (Hamilton 1822)
(Siluriformes: Siluridae) from the River Gomti, a tributary of the River Ganga,
India. Journal of Applied Ichthyology 27(3): 962-964.
Hasan, M.F., Molla, A.H., Ahsan, M.S.
& Alam, M.T. 2002. Physicochemical properties and fatty acids distribution
pattern in lipids of Eutropiichthys vacha Hamilton-buchanan (Family
Schilbeidae). Pakistan Journal of Biological Sciences 5(6): 696-698.
Hamilton, F. 1822. An account of the
fishes found in the river Ganges and its branches. Edinburgh & London.
Fishes Ganges: 1-405.
Hora, S.L. 1941. Siluroid fishes of
India, Burma and Ceylon. XI.-Fishes of the schilbeid genera Silonopangasius Hora, Pseudeutropius Bleeker, Proeutropiichthys Hora, and Ailia Gray.
XII.-A further note on fishes of the genus Clarias Gronovius. Records
of the Indian Museum 43: 97-115.
Hossain, M.Y. 2010a. Length-weight,
length-length relationships and condition factor of three Schibid catfishes
from the Padma River, northwestern Bangladesh. Asian Fisheries Science 23(1):
329-339.
Hossain, M.Y. 2010b. Morphometric relationships of
length-weight and length-length of four Cyprinid small indigenous fish species
from the Padma River (NW Bangladesh). Turkish Journal
of Fisheries and Aquatic Sciences 10(1):
213-216.
Hossain, M.Y., Ahmed, Z.F., Leunda, P.M.,
Islam, A.K.M.R., Jasmine, S., Oscoz, J., Miranda, R. & Ohtomi, J. 2006a.
Length-weight and length-length relationships of some small indigenous fish
species from the Mathabhanga River, southwestern Bangladesh. Journal of
Applied Ichthyology 22(4): 301-303.
Hossain, M.Y., Ahmed, Z.F., Leunda, P.M.,
Jasmine, S., Oscoz, J., Miranda, R. & Ohtomi, J. 2006b. Condition,
length-weight and length-length relationships of the Asian striped catfish Mystus
vittatus (Bloch 1794) (Siluriformes: Bagridae) in the Mathabhanga River,
southwestern Bangladesh. Journal of Applied Ichthyology 22(4): 304-307.
Hossain, M.Y., Jasmine, S., Ibrahim,
A.H.M., Ahmed, Z.F., Rahman, M.M. & Ohtomi, J. 2009b. Length-weight and
length-length relationships of 10 small fish species from the Ganges,
Bangladesh. Journal of Applied Ichthyology 25(1): 117-119.
Hossain, M.Y., Jewel, M.A.S., Nahar, L.,
Rahman, M.M., Naif, A. & Ohtomi, J. 2012b. Gonadosomatic index-based size
at first sexual maturity of the catfish Eutropiichthys vacha (Hamilton
1822) in the Ganges River (NWBangladesh). Journal of Applied Ichthyology 28(4):
601-605.
Hossain, M.Y., Leunda, P.M., Ohtomi, J.,
Ahmed, Z.F., Oscoz, J. & Miranda, R. 2008. Biological aspects of the Ganges
River sprat Corica soborna (Clupeidae) in the Mathabhanga River
(SWBangladesh). Cybium 32(3): 241-246.
Hossain, M.Y., Ohtomi, J. & Ahmed,
Z.F. 2009a. Morphometric, meristic characteristics and conservation of the
threatened fish, Puntius sarana (Hamilton 1822) (Cyprinidae) in the
Ganges River, northwestern Bangladesh. Turkish Journal of Fisheries and
Aquatic Sciences 9(2): 223-225.
Hossain, M.Y., Ohtomi, J., Ahmed, Z.F.,
Ibrahim, A.H.M. & Jasmine, S. 2009c. Length-weight and morphometric
relationships of the tank goby Glossogobius giuris (Hamilton 1822)
(Perciformes: Gobiidae) in the Ganges of the northwestern Bangladesh. Asian
Fisheries Science 22(3): 961-969.
Hossain, M.Y., Rahman, M.M. & Abdallah,
E.M. 2012e. Relationships between body size, weight, condition and fecundity of
the threatened fish Puntius ticto (Hamilton 1822) in the Ganges River,
northwestern Bangladesh. Sains Malaysiana 41(7): 803-814.
Hossain, M.Y., Rahman, M.M., Fulanda, B.,
Jewel, M.A.S., Ahamed, F. & Ohtomi, J. 2012a. Length-weight and
length-length relationships of the five threatened fishes from the Jamuna
(Brahmaputra River distributary) River, northern Bangladesh. Journal of
Applied Ichthyology 28(2): 275-277.
Hossain, M.Y., Rahman, M.M., Jewel, A.S.,
Ahmed, Z.F., Ahmed, F., Fulanda, B., Abdallah, E.M. & Ohtomi, J. 2012c.
Conditions- and form-factor of the five threatened fishes from the Jamuna
(Brahmaputra River distributary) River, Northern Bangladesh. Sains Malaysiana 41(6): 671-678.
Hossain, M.Y., Rahman, M.M., Miranda, R.,
Leunda, P.M., Oscoz, J., Jewel, M.A.S., Naif, A. & Ohtomi, J. 2012d. Size
at first sexual maturity, fecundity, length-weight and length-length
relationships of Puntius sophore (Cyprinidae) in Bangladeshi waters. Journal
of Applied Ichthyology 28(5): 818-822.
IUCNBangladesh. 2000. Red book of
threatened fishes of Bangladesh. In The World Conservation Union, edited
by Mahmud-ul-Ameen, Md. Anwarul Islam & Ainun Nishat. xi pp.1-116.
King, M. 2007. Fisheries Biology,
Assessment and Management. 2nd ed. Oxford: Blackwell Scientific
Publications.
Koutrakis, E.T. & Tsikliras, A.C. 2003. Length-weight
relationships of fishes from three northern Aegean estuarine systems (Greece). Journal
of Applied Ichthyology 19(4): 258-260.
Lakra, W.S., Sarkar, U.K., Kumar, R.S., Pandey, A., Dubey,
V.K. & Gusain, O.P. 2010. Fish diversity, habitat ecology and their
conservation and management issues of a tropical River in Ganga basin, India. Environmentalist 30(4): 1-14.
Le Cren, E.D. 1951. The
length-weight relationships and seasonal cycle in gonad weight and condition in
the perch (Perca fluviatilis). Journal of Animal Ecology 20(2):
201-219.
Mbaru, E.K., Mlewa, C.M.
& Kimani, E.N. 2010. Length-weight relationship of 39 selected reef fishes
in the Kenyan coastal artisanal fishery. Fisheries Research 106(3):
567-569.
Mijkherjee, M.,
Praharaj, A. & Das, S. 2002. Conservation of endangered fish stocks through
artificial propagation and larval rearing technique in West Bengal, India. Aquaculture
Asia 2: 8-11.
Mishra, S.S., Acharjee,
S.K. & Chakraborty, S.K. 2009. Development of tools for assessing
conservation categories of siluroid fishes of fresh water and brackish water
wetlands of South West Bengal, India. Environmental Biology of Fishes 84(4):
395-407.
Muchlisin, Z.A., Musman,
M. & Azizah, M.N.S. 2010. Length-weight relationships and condition factors
of two threatened fishes, Rasbora tawarensis and Poropuntius
tawarensis, endemic to Lake Laut Tawar, Aceh Province, Indonesia. Journal
of Applied Ichthyology 26(6): 949-953.
Naeem, M., Salam, A.,
Gillani, Q. & Ishtiaq, A. 2010. Length-weight relationships of Notopterus
notopterus and introduced Oreochromis niloticus from the Indus
River, southern Punjab, Pakistan. Journal of Applied Ichthyology 26(4):
620.
Naeem, M., Salam, A.
& Ishtiaq, A. 2011. Length-weight relationships of wild and farmed Tor
putitora from Pakistan. Journal of Applied Ichthyology 27(4):
1133-1134.
Patiyal, R.S., Sharma,
R.C., Punia, P., Goswami, M. & Lakra, W.S. 2010. Length-weight relationship
of Tor putitora (Hamilton 1822) from the Ladhiya River, Uttarakhand,
India. Journal of Applied Ichthyology 26(3): 472-473.
Rahman, A.K.A. 1989. Freshwater
Fishes of Bangladesh. Dhaka: Zoological Society of Bangladesh.
Rahman, M.M., Hossain,
M.Y., Jewel, M.A.S., Rahman, M.M., Jasmine, S., Abdallah, E.M. & Ohtomi, J.
2012. Population structure, length-weight and length-length relationships and
condition and form-factor of the pool barb Puntius sophore (Hamilton
1822) (Cyprinidae) from the Chalan Beel, north-central Bangladesh. Sains
Malaysiana 41(7): 795-802.
Richter, T.J. 2007.
Development and evaluation of standard weight equations for bridge-lip suckers
and large-scale suckers. North American Journal of Fisheries Management 27(3):
936-939.
Rypel, A.L. &
Richter, T.J. 2008. Empirical percentile standard weight equation for the
blacktail redhorse. North American Journal of Fisheries Management 28(6):
1843-1846.
Sani, R., Gupta, B.K.,
Sarkar, U.K., Pandey, A., Dubey, V.K. & Lakra, S.W. 2010. Length-weight
relationships of 14 Indian freshwater fish species from the Betwa (Yamuna River
tributary) and Gomti (Ganga River tributary) rivers. Journal of Applied
Ichthyology 26(3): 456-459.
Sarkar, U.K., Deepak,
P.K. & Negi, R.S. 2009. Length-weight relationship of clown knifefish Chitala
chitala (Hamilton 1822) from the River Ganga basin, India. Journal of
Applied Ichthyology 25(2): 232-233.
Schultz, H. 1996.
Drastic decline of the proportion of males in the roach (Rutilus rutilus L.)
of Bautzen Reservoir (Saxony, Germany): Result of direct and indirect effects
of biomanipulation. Limmologica 26(2):153-164.
Shrestha, J. 1994. Fishes,
Fishing Implements and Methods of Nepal. Smt. M.D. Gupta, Lalitpur Colony,
Lashkar (Gwalior), India.
Sokal, R.R. & Rohlf,
F.J. 1987. Introduction to Biostatistics. 2nd ed.
New York: Freeman Publication.
Soomro, A.N., Baloch,
W.A., Jafri, S.I.H. & Suzuki, H. 2007. Studies on length-weight and
length-length relationships of a catfish Eutropiichthyes vacha Hamilton
(Schilbeidae: Siluriformes) from Indus river, Sindh, Pakistan. Caspian
Journal of Environmental Science 5(2): 143-145.
Talwar, P.K. &
Jhingran, A.G. 1991. Inland Fishes of India and Adjacent Countries vol. 2.
Rotterdam: A.A. Balkema.
Tarkan, A.S., Gaygusuz,
Ö., Acipinar, P., Gürsoy, C. & Özulug, M. 2006. Length-weight relationship
of fishes from the Marmara region (NW-Turkey). Journal of Applied
Ichthyology 22(4): 271-273.
Tesch, F.W. 1968. Age
and growth. In Methods for Assessment of Fish Production in Fresh Waters,
edited by Ricker, W.E. Oxford: Blackwell Scientific Publications.
Treer, T., Piria, M.
& Šprem, N. 2009. The relationship between condition and form factors
of freshwater fishes of Croatia. Journal of Applied Ichthyology 25(5):
608-610.
Vazzoler, A.E.A.M. 1996.
Reproduction biology of teleostean fishes: Theory and practice. Maringá,
EDUEM. Brazilian Society of Ichthyology: 1-169.
Yousaf, M., Salam, A.
& Naeem, M. 2009. Length-weight relationships of Wallago attu and Sperata
sarwari from the Indus River, southern Punjab, Pakistan. Journal of
Applied Ichthyology 25(5): 614-615.
*Pengarang untuk surat-menyurat; email: yeamin2222@yahoo.com
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