Fecundity of Glyptothorax telchitta (Hamilton, 1822) from Tamor River, Nepal (original) (raw)
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Borneo Journal of Resource Science and Technology, 2021
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 leng...
2020
The term 'fecundity' denotes the total number of eggs present in the ovaries of a fish, which are likely to be laid during the next spawning season (Bagenal, 1957). The knowledge of fecundity finds a vast application in stock size assessment, stock discrimination (Holden and Raitt, 1974), and rational utilization of stock (Morales, 1991). The assessment of fecundity is useful in evaluating the variations in the fish population, commercial potentialities of its stock, life history, and in the proper management of fishery (Marimuthu et al., 2009). Fecundity and its relation with different body parameters of female fish make it possible to estimate the potential of egg output (Chondar, 1977), and its relation with other morphological characters like size, age and weight have often been used to provide a reliable index of density-dependent factors affecting the size of a population (Ulfat et al., 2014). Biologists have been investigating fish gonads intending to identify annual ...
2016
Fecundity of gravid female fish Puntius sophore was estimated during the period from July to September. The estimated fecundity ranged of 1560 to 2314 eggs with a mean total length of 5.5 cm and body weight of 5.47 gm. The relative fecundity ranged from 390.85 to 480.18 per fish and absolute fecundity from 6106.73 to 6942.35 eggs. Mature ovaries of Puntius sophore occupied maximum space in abdomen during breeding season. Various relationships between fecundity and body parameters ( Fish length, fish weight and ovarian weight) were worked out and it was observed that absolute fecundity is highly correlated (r2= 0.809) with ovarian weight but poorly correlated (r2= 0.047) with total length and moderately correlated (r2=0.216) with body weight. Thus it appears that fecundity was more dependent on ovarian weight than body related parameters. During present investigations a straight line relationship has been obtained between relative fecundity, absolute fecundity with body parameters (F...
Aquaculture Research, 1993
This paper studies maturity and spawning tendency of a hillstream catfish, Clyptothorax madraspatanum (Day), in the Western Nayar River, Garbwat. Central Himalaya, India. The fish is a protracted spawner as it spawns only once during the limited period from July to August. Fecundity ranges from 1640 to 6830 eggs and is more closely related to ovary weight and fish weight than ovary and fish length. There was a non-significant sex ratio of 1:1-24 between males and females.
The ticto barb Puntius ticto (Hamilton 1822) is a small, indigenous fish species of Bangladesh that is widely distributed in the natural waters of Asian countries. This study describes the relationships between body size, weight, condition (Fulton’s, KF; allometric, KA, KR; and relative weight, WR) and fecundity of the threatened species P. ticto from the Ganges River, northwestern Bangladesh. A total of 24 mature female specimens were collected by the traditional fishing gears from March to August 2006. For each individual, total (TL), fork (FL), standard length (SL), and ovary length (OL) were measured by digital slide calipers, while body (BW) and ovary weight (OW) were taken by a digital balance. Total fecundity (FT) of each female was calculated as the number of eggs found in each ovary, whereas relative fecundity (FR) was the number of eggs per gram of fish weight. The results showed that TL of P. ticto varied from 9.10 to 10.80 cm, with calculated mean ± SD as 9.77±0.57 cm. Body weights extended from 14.00 to 24.00 g, with calculated mean ± SD as 17.83±3.39 g. The mean FT was 2586±700 and ranged from 1611 to 4130. BW was more significantly correlated with total fecundity (r2>0.633; p<0.001) than various other body metrics. The results also indicated significant correlation between length-weight (df=22, t-test≥8.86, p<0.001); FT -KF (rs=0.473; p=0.019), FT-KA (rs=0.502; p=0.012), and FT-WR (rs=0.483; p=0.016), but insignificant correlations were found between FT-GSI (rs=0.309; p=0.141) and FR-with various other body metrics. The knowledge of fecundity would be useful to impose adequate regulations for the conservation of this threatened species in the Ganges River and nearby areas of Bangladesh.
Asian Journal of Fisheries and Aquatic Research
The study focused on assessing the fecundity and gonadosomatic index (GSI) of the Gongota Loach species, scientifically known as Somileptes gongota, during the period spanning from April 2019 to March 2020. The fecundity of S. gongota exhibited a range of values, spanning from 3375 to 73459.75. Out of a total of 36 specimens, 16 were identified as male while 20 were identified as female. The typical length of female specimens varies between 5.4 cm and 12.5 cm, with a corresponding body weight range of 3.72g to 19.52g. The recorded mean GSI values for the twelve-month period from April to March were as follows: 0.158, 0.231, 0.225, 0.242, 0.176, 0.00, 0.00, 0.13, 0.00, 0.00, 0.00, and 0.134. The lowest mean GSI value of 0.00 was observed during the months of September, October, December, January, and February. Conversely, the highest mean GSI value of 0.242 was recorded in the month of July. According to the monthly mean GSI of female individuals, the observed spawning season for thi...
Journal of Mountain Research
Mastacembelus armatus (Lacepede) is one of the most important eel like hillstream fish belonging to order Mastacembeliformes and family Mastacembelidae. During last few decades, the population of this species is considerably declining due to overfishing and other anthropogenic activities. Present investigation is an attempt towards conservation of this species in which reproductive power of the fish is estimated and preferred habitat and breeding grounds of fish were studied. The fish is monsoon breeder with maximum fecundity 11810.667±1716.994, observed in a fish size of 42.233±1.365 cm and body weight 153.333±7.638 g. The size of mature egg ranges from 1.2-1.6 mm. With the help of regression analysis, the relationship of fecundity with different body parameters was also traced out. It is suggested that avoiding fish catch during breeding season will be very helpful in conservation of species.
Nepalese Journal of Biosciences, 2015
The sex ratio, Gonado Somatic Index and fecundity of the Copper Mahseer, Neolissochilus hexagonolepis were investigated. The sex ratio was 1:1.2 (Male to female). The gonado-somatic index ranged from 0.084 % to 16.47 % for female fish and 0.086% to 5.81 % for male fish. The highest mean GSI 9.037 % was recorded in July for female fishes and the highest 2.838 % was recorded in September for male fishes. The total weight and total length of the fishes had strong positive correlation. Also, the correlation between the weight of gonad and GSI was positively correlated. Absolute fecundity ranged from to 11424. Fecundity had strong positive correlation with total length (r = 0.98), total weight (r= 0.9) and total length (r= 0.88).
The fecundity of Hilsa ilisha from the river Padma near Godagari of Rajshahi district
University Journal of Zoology, Rajshahi University, 2008
The fecundity of Hilsa ilisha (Hamilton, 1822) were estimated from 20 fully matured females caught from the Padma river near Godagari, Rajshahi and collected from different fish market of Rajshahi City from June to October 2002. The fecundity (F) was found to vary from 5,58,700 to 18,67,000, mean 1239360.35 ± 405068.97 for the fishes with 350-557mm in total length and mean 455.25± 59.94mm and with 600 -1775g in total body weight and mean 1181.85± 356.12g. The co-efficient of correlation for F/TL, F/TW, F/GL and F/GW were 0.8036, 0.8853, 0.7606 and 0.7922 respectively. The regression line for the TL, TW, GL and GW of the sample fishes were found to be linear when they were plotted against their fecundity. All the variables observed (P<0.05) where highly significant . The best indicator of the fecundity of H. ilisha was found to be the total body weight. Key words: Fecundity, gonad, GSI, Hilsa ilisha. Univ. j. zool. Rajshahi Univ. Vol. 26, 2007. pp. 41-44
2018
The present work focused to explore reproductive biology of fish from different Indian major rivers and its tributaries by comparing ovarian protein, fecundity, oocyte weight, oocyte diameter and condition factor during the spawning period. Correlation between fish reproductive parameter of different Indian major rivers and its tributaries showed a significant relationship. Among studied parameters fecundity showed highest correlation with ovarian protein level and oocyte weight in Major River where as in tributaries it was highly correlated with ovarian protein. The results from a wild population showed that the fecundity and ovarian protein level was significantly higher in Narmada, and lowest for river Ganga (U.P.). Among the tributaries, maximum ovarian fecundity noticed from river Hooghly with highest protein concentration. The condition factor (K) in female O. bimaculatus reported significant high in major river Cauveri and Sharda tributary. The oocyte weight was significantly...