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

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.

2017 ◽  
Vol 12 (2) ◽  
pp. 67 ◽  
Author(s):  
Vitas Atmadi Prakoso ◽  
Jojo Subagja ◽  
Anang Hari Kristanto

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.


2013 ◽  
Vol 19 (2) ◽  
pp. 161-166 ◽  
Author(s):  
MA Islam ◽  
M Begum ◽  
HK Pal ◽  
MJ Alam

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


2019 ◽  
Vol 27 (2) ◽  
pp. 80-85
Author(s):  
Md. Abu Sayed Jewel ◽  
Md. Ayenuddin Haque ◽  
Mst. Shahanaj Ferdous ◽  
Mst. Samsad Khatun ◽  
Dil Afroza Khanom ◽  
...  

Abstract The gonadosomatic index (GSI) and fecundity of the threatened Cirrhinus reba (Hamilton) was studied over a period of one year from January to December 2015 in the Ganges River (northwest Bangladesh). The GSI index indicated that the C. reba breeding season in the Ganges was from June to September with the peak in August. Fish fecundity increased with increasing fish length and weight, and the highest fecundity (265,042.23) was recorded in a fish with a total length, a body weight, and an ovary weight of 23.80 cm, 136.00 g and 45.00 g, respectively. There was a linear relationship between fecundity and total length (r = 0.871), body weight (r = 0.872), and ovary weight (r = 0.879), with that between ovary weight and fecundity being the strongest.


2015 ◽  
Vol 41 (1) ◽  
pp. 43-48
Author(s):  
MA Kabir ◽  
MMA Quddus

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


2020 ◽  
Vol 67 (1) ◽  
Author(s):  
S.K. Abujam ◽  
S.P. Biswas

Reproductive biology of spiny eel Macrognathus pancalus Hamilton, 1822 was studied from the waterbodies of upper Assam, India. Sexual dimorphism was easily distinguished based on their body shape and colouration. Among the 467 fish samples examined, 312 males and 155 females were identified and the Male:Female (M:F) ratio ranged from 1:0.08 in November to 1:2.17 in June with overall sex ratio of 1:0.5. Five maturity stages were identified in a year and percentage distribution of each stage was calculated. The gonadosomatic index (GSI) ranged from 0.42 to 8.08 for females and from 0.33 to 1.25 for males. The length at 50% of the fishes attained maturity (Lm50) was 9-12 cm in males and at 12-15 cm in females, indicating males matures at moderately smaller size than their female counterparts. Ova diameter ranged from 0.3 to 1.3 mm; absolute fecundity ranged from 765.48 to 1691.96 and relative fecundity from 57.9 to 152.17. M. pancalus spawned once in a year with peak spawning between June and August.


2017 ◽  
Vol 9 (2) ◽  
pp. 103
Author(s):  
Arinie Gustiarisanie ◽  
Muhammad Fadjar Rahardjo ◽  
Yunizar Ernawati

Ikan Cynoglossus cynoglossus termasuk dalam famili Cynoglossidae yang hidupnya menetap di dasar perairan. Di Teluk Pabean, ikan ini dimanfaatkan oleh masyarakat untuk dikonsumsi sendiri dan untuk dijual. Tujuan penelitian ini adalah untuk mengetahui aspek biologi reproduksi ikan C. cynoglossus yang mencakup ukuran ikan pertama kali matang gonad, musim dan tipe pemijahan. Penelitian dilakukan pada Januari-Desember 2015 di perairan Teluk Pabean, Kabupaten Indramayu. Pengambilan contoh dilakukan setiap bulan sekali dengan menggunakan alat tangkap sero. Diperoleh jenis ikan 613 ekor terdiri dari 290 ekor ikan jantan dan 323 ekor betina. Distribusi ukuran panjang total berkisar Antara 46-117 mm (jantan), 61-126 mm (betina) dengan bobot tubuh berkisar antara 0,57-8,75 g (jantan), dan 2,81-16,72 g (betina). Ukuran ikan betina pertama kali matang gonad pada panjang total 105,5 mm. Ikan ini termasuk pemijah bertahap dengan jumlah telur berkisar antara 2.657-39.647 butir. In the Pabean Bay, Tonguesole (Cynoglossidae) has important value to the community. This research aims to investigate some reproductive biology aspects of tongue sole, namely length at first maturity, spawning season and type of spawn. The research conducted in January to December 2015 in the Pabean Bay, Indramayu. Monthly enumeration conducted from sample that collected through trap net by 613 fishes (290 males and 323 females). The total length of fish ranged from 46 to 117 mm (males), 61 to 126 mm (females). While, the body weight of the fish ranged from 0.57 to 8.75 gram (males), 2.81 to 16.72 gram (females). The results showed that the first maturity of the female is about 105.5 mm total length. This species is probably a batch spawner with the number of eggs ranges from 2657 to 39647 grains.


2021 ◽  
Vol 9 (4) ◽  
pp. 111-117
Author(s):  
Mohammed Suleiman ◽  

Investigation on the Reproductive Biology of Bagrus bayad in Jibiya Dam from Katsina State, Nigeria was carried out from July – December 2019 using standard procedures. One hundred and sixteen (116) samples of B. bayad were harvested and collected during the study period in order to determine sex ratio, fecundity and Gonadosomatic Index (GSI) of the fish species. Results indicated that the male:female sex ratio was 1.3:1 which was not significantly different from the hypothetical 1:1 (p>0.05). It was also found that the GSI of B. bayad was highest in July (0.23) and lowest in October (0.12). The relationship between fecundity and ovary weight was positively significant (p<0.05). Similarly, there was a significant positive relationship between fecundity and body weight as well as between ovary weight and age (p<0.05). However, no significant relationship was found between ovary weight and body weight, body weight and age and between fecundity and age (p>0.05). It is recommended that comparative study on the stages of maturity of male and female B. bayad in Jibiya Dam be investigated.


Author(s):  
AHM Kohinoor ◽  
DA Jahan ◽  
MM Khan ◽  
MS Islam ◽  
MG Hussain

Studies on Gonadosomatic index (GSI), ova diameter and histology of the gonad were performed to understand reproductive biology of Feather back, Chital (Notopterus chitala) for a period of 6 months from January to June 2010. Thirty live chital fish were used in this study. The mean GSI values for female chital were found to range between 0.20±0.013 and 4.63±0.50. The highest GSI value was found in June. The smallest diameter of ovum was recorded 0.04 mm (January) and the largest was 4.00 mm (June). During the experimental period, the fecundity was ranged from 8,238 to 18,569 (mean 13,052±4607) in fish samples with body weight range from 1,296 to 2,360 (mean 1,742.50±474.44 g) while the relative fecundity was 5.65 to 14.33. Histological study revealed that the percentage of late perinucleolus (LPN) stage was highest in April and Cortical alveoli (CA) stage appeared from April and reached to maximum in May. Vitellogenic stage (VG) appeared in the month of May and chronologically increased through June. Vitellogenic stage (VG) of oocyte as well as highest ova diameter reached to the peak in June. The variations in the gonad weight and GSI of the female fish reached to the peak during June indicating maturity of ovary and definite spawning season. DOI: http://dx.doi.org/10.3329/ijarit.v2i1.13991 Int. J. Agril. Res. Innov. & Tech. 2 (1): 26-31, June, 2012


2021 ◽  
Vol 68 (1) ◽  
Author(s):  
Dibakar Bhakta ◽  
Sudhir Kumar Das ◽  
B.K. Das ◽  
T.S. Nagesh

Pama croaker, Otolithoides pama (Hamilton, 1822) is one of the commercially important demersal fish of Hooghly-Matlah estuarine system, West Bengal, India. Reproductive biology of 618 samples of O. pama (Hamilton, 1822) collected from the Hooghly-Matlah estuarine system of West Bengal, India for a period of 18 months (November 2016 to April 2018) was investigated. The total length (TL), body weight (BW) and ovary weight (OW) of the samples varied from 100-384 mm, 7.29-470.71 g and 1.5-29.49 g, respectively. The sex distribution was 1 male for 1.07 female and the ratio did not differ statistically. The length at first maturity (Lm) was recorded as 183 mm for males and 196 mm for females. The reproductive activity was found throughout the year with three peak spawning season with high gonadosomatic index (GSI) values, i. e., during February-March, June and September-November. The absolute fecundity ranged from 4652 to 170688 eggs (24950±32441.2) and relative fecundity ranged from 96 to 808 eggs per g body weight (382±176.83). Fecundity exhibited a relatively higher significant correlation with ovary weight (r = 0.973, p<0.01), compared to total length, total weight and ovary length. Egg diameter frequency showed polymodal distribution, indicating that the species is a batch or asynchronous spawner.


2005 ◽  
Vol 3 (3) ◽  
pp. 433-438 ◽  
Author(s):  
Taís K. Gonçalves ◽  
Marco A. Azevedo ◽  
Luiz R. Malabarba ◽  
Clarice B. Fialho

The reproductive period of Aphyocharax anisitsi is described through the analysis of specimens collected monthly from April 2001 to March 2002 in the arroio do Salso (3022'27"S, 5502'06"W), Rosário do Sul, Rio Grande do Sul, Brazil. The monthly variation of the Gonadosomatic Index mean (GSI) of both males and females allowed the recognition of a defined seasonal reproductive period occurring between September and February, showing a positive correlation with temperature and day-length. Absolute fecundity was 344.8 oocytes and relative fecundity 0.68 oocytes per mg of body weight. Absolute fecundity was correlated with standard length and total body weight. It was possible to identify two categories of males through the analysis of the number of rays bearing hooks on the anal fin: those with few or no rays bearing hooks identified as young males hatched in the last reproductive season, and those with a higher number of anal-fin rays bearing hooks identified as males that had already reproduced once or that are maturing and participating in their first reproductive period. Once developed, anal-fin rays are maintained permanently. A positive correlation was found between the GSI of maturing and mature males and the number of anal-fin rays bearing hooks from August to January. All specimens bearing gill glands were mature or undergoing maturation, and the frequency of occurrence of the gill glands increased with a rise of GSI.


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