scholarly journals Fecundity and gonado-somatic index of wild freshwater spiny eel Mastacembelus armatus (Lacepede) from Kishoreganj region of Bangladesh

2014 ◽  
Vol 11 (2) ◽  
pp. 365-372
Author(s):  
MR Ali ◽  
MFA Mollah ◽  
MRI Sarder
Keyword(s):  
Body Weight ◽  
Same Sex ◽  
Gonad Weight ◽  
Total Length ◽  
Length Relationship ◽  
Mastacembelus Armatus ◽  
Somatic Index

Fecundity and gonado-somatic index (GSI) of wild freshwater spiny eel Mastacembelus armatus were estimated from haor region of Kishoreganj district of Bangladesh. Estimated fecundity ranged from 2,235 to 19,493 for the fish measuring from 25 to 54 cm and weighing from 79 to 345 g. The minimum, median and maximum ova diameter was 0.20, 1.90 and 2.20 mm, respectively. The average numbers of ova present per g body weight were 45.41±8.85, 46.93±15.00 and 47.52±8.32 while the average numbers of ova present per g ovary were 369.64±40.66, 351.29±30.90 and 328.36±33.00 in the months of April, May and June, respectively. Maximum GSI for female spiny eel was 14.40±1.48 in the month of June and the minimum GSI for the same sex was 0.44±0.06 in September. The regression of fecundity on total length, body weight and gonad weight of female spiny eels were Log F = -0.875 + 2.957 × Log TL (r = 0.874), Log F = 0.630 + 1.461 × Log BW (r = 0.917) and Log F = 2.425 + 1.087 × Log GW (r = 0.977), respectively. Fecundity-gonad weight gave a better relationship when compared to fecundity-body weight and fecundity-total length relationship. DOI: http://dx.doi.org/10.3329/jbau.v11i2.19941 J. Bangladesh Agril. Univ. 11(2): 365-372, 2013

scholarly journals Fecundity of Wild Freshwater Spiny Eel Mastacembelus armatus Lacepede from Mymensingh Region of Bangladesh

2006 ◽  
Vol 19 (1) ◽  
Author(s):  
M. M. RAHMAN ◽  
G. U. AHMED ◽  
S. M. RAHMATULLAH
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Breeding Period ◽  
Gonad Weight ◽  
Ovary Weight ◽  
Weight Relationship ◽  
Total Length ◽  
Same Gender ◽  
Mastacembelus Armatus ◽  
Sudden Decrease

The fecundity for 40 wild freshwater spiny eel Mastacembelus armatus estimated from Mymensingh region, Bangladesh during the breeding period from March to July 2004. The estimation of fecundity (mature ova) ranged from 3,155 to 24,684 eggs, the maximum fecundity was observed from a fish measuring 535 mm in length and 350 g in weight and the minimum from a fish of 260 mm in length and 51 g in weight. The maximum ova diameter was 2.75 mm in the month of April and minimum was 1.45 mm in May with a median of 2.08 mm in the month of March and then a sudden decrease in July (1.84 mm). The average number of ova present per gm body weight was 70.19 while the average number of ova present per gm ovary weight was 888.04. Fecundity increased with the increase in length and weight of the fish. Maximum GSI value for female spiny eel was 21.67% in the month of March and the minimum GSI value for the same gender was 3.30% in April and the median GSI value for the same was 8.06% in the month of May. The regressions of fecundity on body length, body weight and gonad weight of female spiny eels were Log F = 2.59 - 2.72 × Log L (r = 0.86), Log F = 1.00 + 1.84 × Log BW (r = 0.88) and Log F = 0.69 + 3.25 × Log GW (r = 0.75) respectively, where F is fecundity, L is total length (mm), BW is body weight (g) and GW is gonad weight (g). Fecundity-total length and fecunditybody weight gave a better relationship in comparison with fecundity-gonad weight relationship.

scholarly journals Length-Weight and Length-Length Relationships in Freshwater Garfish Xenentodon cancila (Ham.) from Muriyadhar, Sunsari, Nepal

2015 ◽  
Vol 26 ◽  
pp. 10-14
Author(s):  
Bharat Raj Subba ◽  
Satya Narayan Mehta ◽  
Shaligram Adhikaree
Keyword(s):  
Body Weight ◽  
Fresh Water ◽  
Growth Pattern ◽  
Standard Length ◽  
Allometric Growth ◽  
B Values ◽  
Total Length ◽  
Length Standard ◽  
Length Relationship ◽  
Xenentodon Cancila

Present paper attempts to describe length-weight (LW) and total length-standard length (TL and SL) relationships of fresh-water garfi sh Xenentodon cancila. Fish of different length and weight were caught using cast nets from Muriyadhar, Sunsari. The fish were kept in ice box in fresh condition and brought to fi sh laboratory, Department of Zoolog post Graduate Campus, Biratnagar. The data obtained from measurement were analysed using the formula W = aLb. The b values estimated for the total length and standard length in relation to body weight were 3.2202 and 3.2559 respectively. The values of b clearly indicate the allometric growth pattern and for total length and standard length relationship, the linear value of b was 0.3223.J. Nat. Hist. Mus. Vol. 26, 2012: 10-14

scholarly journals Fecundity and gonadosomatic index of Glossogobius giuris (Hamilton, 1822) from the Payra River, Patuakhali, Bangladesh

2014 ◽  
Vol 2 (2) ◽  
pp. 141 ◽  
Author(s):  
Animesh Roy ◽  
Md. Shakhawate Hossain ◽  
Mohammad Lutfar Rahman ◽  
Mohammad Abdus Salam ◽  
Mir Mohammad Ali
Keyword(s):  
Body Weight ◽  
Gonadosomatic Index ◽  
Fish Population ◽  
Mean Value ◽  
Gonad Weight ◽  
Weight Relationship ◽  
Total Length ◽  
Breeding Technique ◽  
The Mean ◽  
Glossogobius Giuris

Glossogobius giuris were collected during March to September 2013 from the Payra river to estimate the length-weight relationship with relative condition factor (Kn), fecundity, gonadosomatic index (GSI) and relation between fecundity and other parameters. The length-weight relationship was found to be Log W= 2.667 Log TL – 1.805 in male and Log W = 2.931 Log TL – 2.040 in female. The mean Kn were found to be 1.02±0.155 for male and 0.97±0.276 for female which indicates satisfactory condition of the fish population. The mean relative fecundity was ranged from 88495 to 264104 with a mean value of 171581±17855, having a average total length of 21.21±0.44 cm, body weight 70.22±4.62 g and gonad weight 2.74±0.31 g. The relationships among the fecundity, the total length, body weight, gonad weight were found to be linear and positively correlated. The mean GSI value was 3.42±0.33 and the highest GSI value was recorded 9.34±0.71 in the month of September. This study will help to introduce this species in sustainable aquaculture through proper management and for the development of induced breeding technique.

scholarly journals Fecundity and gonado somatic index of Gangetic mud eel, Monopterus cuchia (Hamilton, 1822)

2015 ◽  
Vol 41 (2) ◽  
pp. 165-172
Author(s):  
Binay K Chakraborty ◽  
SA Azad ◽  
B Barman ◽  
AMO Faruque
Keyword(s):  
Body Weight ◽  
Linear Relationship ◽  
Body Length ◽  
Total Body Weight ◽  
Second Order ◽  
Regression Equation ◽  
Total Weight ◽  
Gonad Weight ◽  
Total Body ◽  
Somatic Index

The gonado-somatic index (GSI) and fecundity of Gangetic mud eels Monopterus cuchia (Hamilton, 1822) were investigated during January to December, 2010 at Sherpur, Bangladesh. Highest GSI value was found in the month of June and the values began to fall gradually from July to December in both sexes. The fecundity ranged from 458.0±31.22 to 1116.0±11.31 in 62 samples having a total length of 54.25±1.71 to 66.05±0.71 cm, body weight from 256.33±45.14 to 492.50±2.50 g and gonad weight from 21.32±4.48 to 55.90±0.98 g. The relationships between body length and fecundity was found to be polynomial of second order of body weight and was expressed as: Y=0.2683 X2- 1.9383 X+370.72. The regression equation established for fecundity on total body weight was Y=454.37 X-692.8. The regression equation established for fecundity on total gonad weight was Y=19.602 X-27.546. The above equation showed that the relationships between fecundity and total weight was curvilinear. A highly significant (P<0.01) linear relationship was found to exist between fecundity and gonadal weight.Bangladesh J. Zool. 41(2): 165-172, 2013

scholarly journals Studies on the Gonadosomatic Index and Fecundity of Mystus gulio (Ham.)

2013 ◽  
Vol 19 (2) ◽  
pp. 161-166 ◽  
Author(s):  
MA Islam ◽  
M Begum ◽  
HK Pal ◽  
MJ Alam
Keyword(s):  
Body Weight ◽  
Sex Ratio ◽  
Body Length ◽  
Gonadosomatic Index ◽  
Spawning Season ◽  
Gonad Weight ◽  
Total Length

The study was conducted for a period of twelve months from January to December 2006 to determine the gonadosomatic index (GSI) and fecundity of Mystus gulio. Total 370 of Mystus gulio were examined during the study period. The sex ratio (male:female) of the investigated fish was 1:1.22 and generally female was larger than male. The fish was found to have a wide spawning season (March to November) with a single spawning peak in July as indicated by the gonadosomatic index and ova diameter. Fecundity of the fish was ranged from 3,891 to 1,68,358 with an average of 32,909.49 during the period of study and was found to increase with the increase of body length and weight. The relationships between fecundity and total-length, body-weight, gonad-length and gonad-weight were found linear and statistically highly significant (p<0.05).DOI: http://dx.doi.org/10.3329/pa.v19i2.16957 Progress. Agric. 19(2): 161 - 166, 2008

scholarly journals BIOREPRODUKSI DAN HUBUNGAN PANJANG-BOBOT TERHADAP FEKUNDITAS PADA IKAN LALAWAK (Barbonymus balleroides)

2017 ◽  
Vol 11 (4) ◽  
pp. 339 ◽  
Author(s):  
Irin Iriana Kusmini ◽  
Fera Permata Putri ◽  
Vitas Atmadi Prakoso
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Gonadosomatic Index ◽  
Natural Habitat ◽  
The Body ◽  
Gonad Weight ◽  
Length Relationship ◽  
Negative Impacts ◽  
Egg Diameter ◽  
The Relationship

Eksploitasi ikan lalawak (Barbonymus balleroides) yang berlebihan dari alam mengakibatkan langkanya jenis ikan ini di beberapa perairan aslinya. Sebelum ikan ini diperkenalkan sebagai komoditas budidaya, masih diperlukan lebih banyak lagi informasi mengenai aspek bioreproduksi ikan lalawak yang telah dipelihara pada lingkungan budidaya. Tujuan dari kegiatan ini adalah untuk mengevaluasi produktivitas ikan lalawak yang dipelihara pada lingkungan budidaya melalui pengamatan bioreproduksi dan hubungan panjang-bobot terhadap fekunditas. Sampel induk ikan lalawak betina yang diambil sebanyak 15 ekor, kemudian dipilih lima ekor induk betina yang telah matang gonad dengan ciri-ciri seluruh badannya terasa kasar apabila diraba, perut membesar ke arah posterior dan terasa lunak, genital mengembang, serta berwarna kemerahan. Data yang dikoleksi berupa panjang total, bobot badan, bobot gonad, fekunditas, diameter telur, dan indeks kematangan gonadnya. Hasil penelitian menunjukkan bahwa kisaran fekunditas ikan lalawak adalah 1.920-2.236 butir/g bobot gonad, dan 83-352 butir/g bobot badan induk dengan rata-rata diameter telur 0,87-1,10 mm. IKG berkisar 3,73%-18,36% dari kisaran bobot induk 85,32-264,8 g. Hubungan antara bobot badan dengan bobot gonad ikan lalawak digambarkan dengan persamaan linear y= 5,829ln (x) + 0,691 (r= 0,874); sedangkan hubungan panjang badan terhadap bobot gonad digambarkan dengan persamaan y= 28,52ln (x) - 38,10 (r= 0,7487). Pada ikan lalawak, hubungan bobot badan dengan fekunditas lebih erat dibandingkan dengan hubungan panjang badan terhadap fekunditas. Hasil pengamatan juga menyimpulkan bahwa ikan lalawak tergolong ikan yang memijah secara parsial.Over-exploitation of lalawak (Barbonymus balleroides) from its natural habitat had significant negative impacts on its availability. Before it is introduced as aquaculture commodity, more information about its reproductive biology in aquaculture environment needs to be well observed. The aim of this study was to determine the productivity of lalawak reared in aquaculture environment through observation of bioreproductionand relationship between fecundity and body length-weight of lalawak. Samplewas randomly taken from fifteen individuals female. From those samples, gonads were taken from five mature females for reproduction observation, by which the mature females were selected following specific criteria such as : their body feels rough if touched;enlarged abdomen posteriorly and felt soft; fluffy and reddish genital. Data collection consisted of measurement of the total length, body weight, gonad weight, fecundity, egg diameter and gonadosomatic index (GSI). The results revealed that the fecundity of lalawak ranged from 1,920 to 2,236 eggs/gof gonad weight and 83 to 352 eggs/g of body weight with average diameters of eggs ranged from 0.869 to 1.10 mm. GSI values ranged from 3.73 to 18.36% of 85.32 to 264.8g of body weight. The relationship between body weight and gonad weight of lalawak was described by the linear equation of y= 5,829ln (x) + 0.691 (r= 0.874), while the body length relationship to the gonad weight was described by the equation of y= 28,52ln (x) - 38.10 (r= 0.7487). Fecundity relationship with body weight of lalawak was closer than the length. The observations also concluded that lalawak is classified as partial spawning.

Fecundity and gonadosomatic index of Labeo calbasu (Hamilton) from a stocking pond of a hatchery at Faridpur, Bangladesh

2015 ◽  
Vol 41 (1) ◽  
pp. 43-48
Author(s):  
MA Kabir ◽  
MMA Quddus
Keyword(s):  
Body Weight ◽  
Gonadosomatic Index ◽  
Cyprinid Fish ◽  
Gonad Weight ◽  
Ovary Weight ◽  
Total Length ◽  
Closed Water ◽  
The Relationship

Fecundity, gonadosomatic index (GSI) and ova diameter of the cyprinid fish Kalibaush (Labeo calbasu,Ham.) were studied from a closed water hatchery pond, Faridpur district during April 2007 to March 2008. Fecundity of the fish ranged from 37454 to 427030 with an average 230242. The maximum fecundity was from a fish with total length of 51.3 cm and 1785 g in weight and minimum from a fish with a total length of 32.5 cm and 720 g in weight. The number of ova present per gram of body weight was 213.13 and the number of ova present per gram of ovary weight was 1359.17. It was observed that the fish spawned once in a year with one spawning peak in the month of July as indicated by the values of both ova diameter (1.3± 0.04) and gonadosomatic index (1.68± 0.11 and 18.58 ± 0.06) respectively. The relationship between fecundity and other variables (Total length, body weight and gonad weight) was linear and significant (P<0.01).Bangladesh J. Zool. 41(1): 43-48, 2013

Size-frequency and allometric growth of the yellowfin tuna, Thunnus albacares (Bonnaterre, 1788), caught in the Molluca Sea, Indonesia

2013 ◽  
Vol 1 (2) ◽  
pp. 124 ◽  
Author(s):  
Budi Wahono ◽  
Lawrence J.L Lumingas
Keyword(s):  
Body Weight ◽  
Yellowfin Tuna ◽  
Biological Information ◽  
Thunnus Albacares ◽  
Allometric Growth ◽  
Important Species ◽  
B Values ◽  
Total Length ◽  
Length Relationship ◽  
Direct Proportionality

Yellowfin tuna Thunnus albacares (Bonnaterre, 1788) is a very important species for the world fisheries. Biological information including length-frequency distribution, total length (TL)-head circle length (HCL) relationship, and total length-body weight (BW) relationship were examined for 115 female and 84 male yellowfin tuna, caught in Molluca Sea. Significantly different mean total length was found for female and male yellowfin tuna; the male (mean length 110.66 cm) is bigger than the female (mean length 103.36 cm). The total length-head circle length relationship for female yellowfin tuna can be described as HCL= 0.7455TL0.9565 and HCL= 0.7821TL0.9456 for male yellowfin tuna. In the HCL-TL relationships, the allometric coefficient (b) values obtained for both female and male yellowfin tuna did not differ significantly from 1 or isometry, which indicates direct proportionality between HCL and TL. The estimated total length-body weight relationship for yellowfin tuna was BW = 0.0172TL2.9826 for female and BW = 0.0223TL2.9281 for male. In the BW-TL relationships, the allometric coefficient (b) values obtained for both female and male yellowfin tuna did not differ significantly from 3 or isometry, which indicates direct proportionality between BW and TL. This biological information will be useful for the fisheries management of the species studied. Ikan madidihang Thunnus albacares (Bonnaterre, 1788) merupakan spesies yang sangat penting untuk perikanan dunia. Informasi biologi yang meliputi sebaran frekuensi panjang, hubungan panjang total (PT)-panjang lingkar kepala (PLK), dan hubungan panjang total-berat tubuh (BT) telah diteliti untuk 115 individu ikan madidihang betina dan 84 individu ikan madidihang jantan yang tertangkap di Laut Maluku. Rata-rata panjang total ikan madidihang betina berbeda nyata dengan rata-rata panjang total ikan madidihang jantan; ikan madidihang jantan (110,66 cm) berukuran lebih besar dibanding ikan madidihang betina (103,36 cm). Hubungan panjang total-panjang lingkar kepala untuk ikan madidihang betina adalah PLK = 0,7455PT0,9565 dan untuk ikan madidihang jantan adalah PLK = 0,7821PT0,9456. Dalam hubungan PLK-PT, nilai-nilai koefisien allometri (b) untuk ikan madidihang betina dan jantan tidak berbeda nyata dengan 1 atau isometri, yang mengindikasikan pertumbuhan yang proporsional antara PLK dan PT baik untuk ikan betina maupun untuk ikan jantan. Hubungan panjang total-berat tubuh dugaan adalah BT = 0,0172PT2,9826 untuk ikan madidihang betina dan BT = 0,0223PT2,9281 untuk ikan madidihang jantan. Dalam hubungan BT-PT, nilai-nilai koefisien allometri (b) untuk ikan madidihang betina dan jantan tidak berbeda nyata dengan 3 atau isometri, yang mengindikasikan pertumbuhan yang proporsional antara BT dan PT baik untuk ikan betina maupun untuk ikan jantan.  Informasi biologi ini akan berguna untuk pengelolaan perikanan dari spesies yang dipelajari.

On a saddled snake eel Pisodonophis semicinctus (Osteichthyes: Ophichthidae) trawled in the Strait of Sicily (Mediterranean Sea)

2000 ◽  
Vol 80 (5) ◽  
pp. 951-952 ◽  
Author(s):  
Sergio Ragonese ◽  
Giovan Battista Giusto
Keyword(s):  
Body Weight ◽  
Mediterranean Sea ◽  
Bottom Trawl ◽  
Northern Coast ◽  
Rare Finding ◽  
Strait Of Sicily ◽  
Total Length ◽  
The Mediterranean

The occurrence in the Strait of Sicily of the saddled snake eel, Pisodonophis semicinctus (Osteichthyes: Ophichthidae), a rare finding for the Mediterranean Sea, is confirmed on the basis of one specimen caught off the northern coast of Tunisia in 1991. The specimen, 800 mm in total length and 457 g in body weight (preserved condition), was captured during a commercial bottom trawl hauled at 30 m next to Cape Bon (north of Tunisia). This represents the second and fourth documented record of this Atlantic intruder within the Strait of Sicily and the Mediterranean Sea, respectively.

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