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 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 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 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

scholarly journals Fecundity and Gonadosomatic Index of Sucker Throat Catfish, Pseudecheneis sulcata (McClelland, 1842) from the Snow-fed Tamor River in Eastern Nepal

2021 ◽  
Vol 11 (2) ◽  
pp. 1-9
Author(s):  
Jash Hang Limbu ◽  
Dipak Rajbanshi ◽  
Prakash Kumar ◽  
Bharat Raj Subba
Keyword(s):  
Body Weight ◽  
Reproductive Biology ◽  
Gonadosomatic Index ◽  
Spawning Season ◽  
Stream Fish ◽  
Female Fish ◽  
Ovary Weight ◽  
Relative Fecundity ◽  
Absolute Fecundity ◽  
Total Length

In comparison to other nations, the Nepalese information on the reproductive biology of hill-stream fish is limited. So, the purpose of the present study was to provide information related to reproductive biology of a hill-stream sucker throat catfish Pseudecheneis sulcata from the snow-fed Tamor River, Nepal. The study was carried out from June 2018 to May 2019.  A total of 57 female fish was collected. The fecundity of 22 females was assessed, while the gonadosomatic index was determined using all the collected samples. The absolute fecundity ranged from 2,316 to 7,597 eggs, with an average of 3,660 ± 210. This range of absolute fecundity indicates that Pseudecheneis sulcata is a moderately fecund fish when compared to certain low fecund species and some exceptionally fecund fish with tens of thousands of eggs. Relative fecundity ranged from 65.47 to 129.11 with a mean of 88.98 ± 4.35. The present study demonstrated that absolute fecundity was moderately correlated with total length (r = 0.45) and strongly linked with body weight (r = 0.78), and ovary weight (r = 0.80). Mean gonadosomatic index (GSI) was recorded the highest in January (15.7 ± 1.22%), and showed a decrease in the subsequent month of February (10.3 ± 0.75%), March (6.25 ± 0.28%) and April (1.66 ± 0.40%). The trends of GSI might have indicated that the sucker throat catfish was a batch spawner, with spawning season occuring between January and March.

scholarly journals Seasonal variations in the population biology of Salmostoma bacaila (Cyprinidae) from a tributary of the Payra River, Bangladesh

2019 ◽  
pp. 113-119
Author(s):  
Ahamed Ahamed ◽  
Faruque Ahmed Zoarder ◽  
Jun Ohtomi
Keyword(s):  
Sex Ratio ◽  
Seasonal Variations ◽  
Population Biology ◽  
Sexual Maturity ◽  
Condition Factor ◽  
Gonadosomatic Index ◽  
Spawning Season ◽  
Frequency Distributions ◽  
Size At Sexual Maturity ◽  
Management And Conservation

Some biological parameters of Salmostoma bacaila – including sex ratio, length-frequency distributions (LFDs), size at sexual maturity, spawning season, length-weight relationships (LWRs) and condition factor – were studied. Samples were collected seasonally during June 2017 to May 2018 from a tributary of the Payra River. The overall sex ratio was significantly different from the expected value of 1:1 (p < 0.001), in favour of male specimens. Females were significantly larger than males. Size at sexual maturity was estimated at 7.6~7.7 cm total length. Seasonal variations in the gonadosomatic index (GSI) indicate that the main spawning season is from spring to summer. The LWRs showed negative allometric growth in both sexes, but with clear seasonal variation. Fulton’s condition factor varied in both sexes and was attributed to variations in GSI with maturity. The fin¬dings of this study will be helpful for management and conservation of S. bacaila populations.

scholarly journals ASPEK BIOLOGI REPRODUKSI DAN POLA PERTUMBUHAN IKAN UCENG (Nemacheilus fasciatus) DALAM PEMELIHARAAN DI AKUARIUM

2017 ◽  
Vol 12 (2) ◽  
pp. 67 ◽  
Author(s):  
Vitas Atmadi Prakoso ◽  
Jojo Subagja ◽  
Anang Hari Kristanto
Keyword(s):  
Body Weight ◽  
Reproductive Biology ◽  
Growth Pattern ◽  
Gonadosomatic Index ◽  
Natural Habitat ◽  
Economic Value ◽  
Black Spot ◽  
Total Length ◽  
Central Java ◽  
Artificial Environment

Ikan uceng (Nemacheilus fasciatus) merupakan salah satu spesies ikan air tawar di Indonesia dengan nilai ekonomi cukup tinggi yang ketersediaannya masih mengandalkan penangkapan di alam, sehingga diperlukan upaya domestikasi untuk menjaga kelestariannya. Tujuan dari kegiatan ini adalah untuk mengamati biologi reproduksi dan pola pertumbuhan ikan uceng di lingkungan buatan (akuarium). Ikan uceng hasil tangkapan alam dari Sungai Progo, Temanggung, Jawa Tengah (panjang total 5,55 ± 0,53 cm; bobot 2,49 ± 0,24 g) diadaptasikan selama 12 bulan di akuarium (40 cm × 30 cm × 30 cm) dengan sistem air mengalir yang dilengkapi dengan aerator. Ikan uceng diberi Tubifex, hingga sampai akhirnya dapat beradaptasi dengan pakan komersial. Pakan komersial yang diberikan yaitu sebesar 3% per hari dari biomassa tubuh dengan frekuensi dua kali sehari. Data biologi reproduksi diperoleh melalui koleksi data panjang total, bobot badan, bobot gonad, fekunditas, diameter telur, dan indeks kematangan gonad. Data pola pertumbuhan diperoleh dengan koleksi data panjang, bobot, dan sintasannya. Hasil penelitian menunjukkan bahwa induk betina yang gonadnya berkembang mempunyai warna bintik hitam yang jelas, sebaliknya induk jantan warna bintik hitam memudar. Indeks kematangan gonad (IKG) yang diamati pada ikan uceng setelah 12 bulan pemeliharaan yaitu berkisar antara 0,007-0,027 pada jantan dan 0,13-0,25 pada betina. Kisaran diameter telur yang diamati yaitu berkisar antara 0,61-0,68 mm, dengan fekunditas 680-4.198 butir. Sedangkan pola pertumbuhannya menunjukkan bahwa ikan uceng betina dan jantan memiliki pola pertumbuhan allometrik negatif (b= 2,739 pada betina; b= 2,895 pada jantan). Nilai faktor kondisi Fulton (K) pada ikan uceng yang diamati yaitu 0,44-1,07 (rata-rata ± SD: 0,70 ± 0,11) pada betina dan 0,37-0,72 (rata-rata ± SD: 0,60 ± 0,06) pada jantan. Dari pengamatan ini ditemukan bahwa proses perkembangan kematangan gonad ikan uceng di akuarium lebih lambat dibandingkan ikan uceng di habitat aslinya.Barred loach (Nemacheilus fasciatus) is one of native fish species in Indonesia with high economic value, where their availability still depends on wild capture. Thus, domestication is needed to maintain its sustainability. The purpose of this study was to observe the reproductive biology and growth pattern of barred loach reared in aquarium (artificial environment). Fish were collected from Progo River, Temanggung, Central Java (total length of: 5.55 ± 0.53 cm; body weight: of 2.49 ± 0.24 g). The fish were reared for 12 months in aquarium (40 cm × 30 cm × 30 cm) with flowthrough system and equipped with aeration. The fish were fed with Tubifex until they accepted commercial feed. Then, the fish were fed twice a day at a ratio of 3% from the total fish biomass. The reproductive biology data were collected by measuring their total length, body weight, gonad weight, fecundity, egg diameter, and gonadosomatic index. Growth pattern were measured from length, weight, and survival. The results showed that matured female had shown black spot and male had inconsistent formation of black spots on their body. The gonadosomatic indexes ranged between 0.007-0.027 for male and ranged between 0,13-0,25 for female. The egg diameters ranged between 0.61-0.68 mm, with the fecundity of 680-4198 eggs. The result of observation on growth pattern showed that female and male had negative allometric growth (b= 2.739 for female, b= 2.895 for male). The value of Fulton condition factor (K) in the observed fish was 0.44-1.07 (mean ± SD: 0.70 ± 0.11) on female and 0.37-0.72 (mean ± SD: 0.60 ± 0.06) on male. From this study, it was found that gonad maturity development of barred loach reared in aquarium was slower than those in their natural habitat.

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

Reproductive biology of thin sharpbelly, Toxabramis swinhonis Günther, 1873 in a shallow lake (Biandantang Lake) along the middle reach of the Yangtze River basin (China): implications for fisheries management

2019 ◽  
Vol 55 ◽  
pp. 8
Author(s):  
Xianghong Dong ◽  
Gaël Grenouillet ◽  
Tao Ju ◽  
Tao Xiang ◽  
Zhan Mai ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Reproductive Biology ◽  
Early Stage ◽  
Yangtze River Basin ◽  
Gonadosomatic Index ◽  
Bimodal Distribution ◽  
Spawning Season ◽  
Central China ◽  
High Fecundity ◽  
Wide Range

The reproductive biology of Toxabramis swinhonis, one of the most abundant bycatch species in freshwater fishery in China, was first reported based on 783 specimens collected in Biandantang Lake, central China from October 2016 to September 2017. The overall sex ratio (female/male) was 1.03:1, not significantly different from the expected value 1:1. Nevertheless, sex ratio varied with seasons: 1.32:1 in the early stage of the spawning season (March–April), while 0.46:1 in the later stage (July–August). The monthly succession of the average gonadosomatic index (GSI) and percentages of mature individuals co-indicated that T. swinhonis was a spring-summer (March–August) spawner. Further, the bimodal distribution of the size of eggs from one gravid ovary and histological analysis of mature gonads suggested that T. swinhonis was a multiple spawner with indeterminate fecundity and high degree of spawning asynchronicity. The sizes and ages at first maturity for females and males were 84.47 and 81.86 mm, and 1.62 and 1.56 yr, respectively. The batch fecundity (FB) of this species varied in a wide range from 2006 to 73592 eggs per fish with a mean value of 26487.15 ± 2675.61 (S.E.) eggs and increased with the increasing of the gonad weight (WG), eviscerated weight (WE), total length (LT) and age (A). Overall, T. swinhonis in Biandantang (BDT) Lake is characterized by high fecundity and prolonged spawning season, resulting in easy population explosion. Thus, to remove T. swinhonis moderately or release predator fish discreetly to control its population is proposed considering its reproductive characteristics.

scholarly journals Fecundity and condition of Chrysichthysnigrodigitatus (Family Claroteidae) in Yewa Lagoon, Nigeria

2020 ◽  
Vol 40 (2) ◽  
pp. 183-188
Author(s):  
I. O. Taiwo ◽  
O. A. Olopade ◽  
A. I. Tiamiyu
Keyword(s):  
Body Weight ◽  
Standard Length ◽  
Condition Factor ◽  
Gonadosomatic Index ◽  
Gonad Weight ◽  
Female Fish ◽  
Male Fish ◽  
Better Than

The minimum and maximum standard length of females caught was 8.0cm (14.5g body weight) and 14.6cm (53.4g body weight) respectively while the males were 10.1cm (19.8g) and 17.1cm (68.6g). The gonadosomatic index (GSI) for females ranged between 6.55 and 25.57 while males ranged between 5.68 and 16.55. Significant (P<0.05) relationships were observed between standard length, body weight, gonad weight and fecundity. There was significant (P<0.05) relationship between body weight and fecundity. Body weight and GSI had no significant (P>0.05) relationship with condition factor in C. nigrodigitatus in Yewa Lagoon. The condition factor (K) ranged between 1.58 and 2.92 for the females while males ranged between 1.08 and 2.79. The condition of female fish was slightly better than that of male fish of the same length.

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