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  • Propagation  (13)
  • 1
    Publication Date: 2021-05-19
    Description: Salinity effects on brooders spawning, growth and survival rate of yellow fin sea bream (〈i〉Acanthopagrus latus〈/i〉) fingerlings was studied in Khouzestan Marine Fishes Research Station (Bandar-e Imam) in 2002- 2003. More than 200 brooders were caught in Mahshar creeks using hook, and 6 males and 3 females of brooders were introduced to each 4 tons tank. The experiments were carried out using 3 salinity treatments (30~c1, 35~c1 and 40~c1 ppt) in 3 replications. Survival rate of brooders in 4 tons tanks during late January to 4〈super〉th〈/super〉 April was estimated more than %90 in all salinities and the maximum rate was observed in 30 ppt treatment. Spawned brooders percentage in 40 ppt was more than the two other salinities, and spawning occurred in all three replications of this treatment. In all treatment, spawning started from early march (late lunar month) at 19~'C and continued at 23~'C. Duration and replication of spawnings in 40 ppt were more than other salinities, and last about 20 days. Released eggs (2461046), amount of eggs production per day (66413), average number of eggs per brooder (312914), and average eggs per kg body weight (649460) were found in 40 ppt more than other salinities. Floating eggs ratio was more than %90 in 40 ppt and it was significantly different to the others. Fertilization and hatching rates in 40 ppt treatment (86.7, 67 respectively) were more than 30 and 35 ppt but there was no significant difference. All spawnings cases , released eggs hatched.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Salinity ; Spawning ; Yellow fin ; Bream ; Acanthopagrus latus ; Propagation ; Density ; Survival rate ; Fingerling ; Growth ; Acanthopagrus latus ; Yellow fin sea bream
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 55pp.
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  • 2
    Publication Date: 2021-05-19
    Description: Salinity effects on brooders spawning, growth and survival rate of yellow fin sea bream (Acanthopagrus latus) fingerlings was studied in Khouzestan Marine Fishes Research Station (Bandar -e – Imam) in 2002-2003. More than 200 brooders were caught in Mahshar creeks using hook, and 6 males and 3 females of brooders were introduced to each 4 tons tank. The experiments were carried out using 3 salinity treatments (30 ± 1, 35 ± 1 and 40 ± 1 ppt) in 3 replications. Survival rate of brooders in 4 tons tanks during late January to 4 th April was estimated more than %90 in all salinities and the maximum rate was observed in 30 ppt treatment. Spawned brooders percentage in 40 ppt was more than the two other salinities, and spawning occurred in all three replications of this treatment. In all treatment, spawning started from early march (late lunar month) at 19°c and continued at 23°c. Duration and replication of spawnings in 40 ppt were more than other salinities, and last about 20 days. Released eggs (2461046), amount of eggs production per day (66413), average number of eggs per brooder (312914), and average eggs per kg body weight (649460) were found in 40 ppt more than other salinities. Floating eggs ratio was more than %90 in 40 ppt and it was significantly different to the others. Fertilization and Hatching rates in 40 ppt treatment (86.7 , 67 respectively) were more than 30 and 35 ppt but there was no significant difference. All spawnings cases , released eggs hatched.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Salinity ; Propagation ; Yellow fin sea bream ; Spawning ; Density ; Survival rate ; Fingerling ; Acanthopagrus latus
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 65pp.
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  • 3
    Publication Date: 2021-05-19
    Description: The aquaculture activity in provinces of north of Iran, in spite of fast progressive and possess a series of achievement and success, there was some failure, difficulties, limitation and restriction. To planning for further expansion in this faild, this study is managed. The culture of rainbow trout is practice in individual farms, small farms, water resources, earthen ponds, recycling ponds etc, which each method have its potential , failure and limitation that are consider in the present work. At the end, based on the situation of production in past years, and considering each of factors mentioned above, the success, failure, difficulties, limitation and restriction points of aquaculture of rainbow trout in technical poin of view are investigated and some command for improvement for each production method are presented. The development of aquaculture in recent years is based on extention of farms and increasing dencity of fish in fish pond. In contrast of many production activities, the propagation and culture of fish is inconstant work. This variability makes a potential for better income, occupation and job, increasing in production etc. This study make a better planning using this activity.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rainbow trout ; Water resources ; Fish culture ; Aquaculture ; Investigation ; Propagation
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 66pp.
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  • 4
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    Publication Date: 2021-05-19
    Description: This survey carried out during 3 years.We surveied posibility of artifishial hatching of Gattan(Barbus xanthopetrus).We fished brood stocks from Karkheh river and transferd them to fresh water hatcharies. We held some of brood stocks in pond and the rest were treated with hormons.We used PG as a couse in the first year.Also pure LRHA and compound of LRHA with PG or pure GnRH with metacholrooramid were used in next years. The quantity of esperms were increased after using hormon and many of female which were injected with PG became fertile. Injection of hormons carried out in one stage or two stages with 10-12 hour interval.In the third year of the project because of existence of enough brood stocks;our test were more completly..We used PG hormon and other artificial hormons for 26 femals brood stocks.15pieces or them became fertile;then handing spowning carried out on them. Larves transfered 6 days after development stages.47000 larves transfered to pond and fed with SFC They reached to 172 mg in weigth and 28 mm in length after 30 days.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Investigation ; Propagation ; Barbus xanthopterus ; Survey ; LRHA ; Hormone
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 35pp.
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  • 5
    Publication Date: 2021-05-19
    Description: This project was carried out in the year 2003 in Khuzestan province waters to determine the best artificial propagation techniques for mass production of Barbus xanthopterus. The fish is one of the most valuable and economic species in the area. The propagation was started in late March and continued till late April while suitable temperature was 21-24.5 C. A number of 23 female broodstock with mean weight and length 3.85±0.45kg and 64.95±21cm respectively with a sex ratio of 2:1 male to female were used in the process. The amount of hypophysis injection was 4mg/kg weight of fish and two injections with 10-12 h interval to 10:90 were undertaken. Spawning success was 87% in broodstock. Latency period was 15- 17h and the incubation duration was 59-60h in 23-25 C.The fish eggs has a low stickiness and the count of dry and water-absorbed eggs were 480±32 and 287±25g, respectively. In the twice-injected broodstock, the fertilization rate was 77.22±3.1%, the hatching rate was 81.2 ±1.89% and the survival rate was 83.4±2%. Size of the dry and water-absorbed eggs was 1248±45 and 2110±125, respectively. Washing time with fertilization liquid was 10 min for removing stickiness. In the end, 660 thousand larvae were produced and released to earthen ponds for culture.
    Description: Published
    Keywords: Barbus xanthopterus ; Broodstock ; Determination ; Artificial ; Propagation ; Biotechnic ; Aquaculture ; Spawning
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.137-142
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  • 6
    Publication Date: 2021-05-19
    Description: In order to achieve biotechnic normative of Sobaity Sparidentex hasta propagation and its fries rearing, 96 brood stocks were caught by using hook from Bandar Imam and Mahshahr creeks. For natural spawning, at first stage some selected broodstocks (sex ratio 2:1 & 1:1 male to female) were directly introduced to spawning tanks. In this method eggs were absorbed and spawning was not occured. For artificial spawning (natural spawning with hormone injection): At second stage for males, in one step, 40 g kg-1 and 200 Iu kg-1 body weight and for females, in two steps, 75 g kg-1 and 500 Iu kg-1 LRHa & HCG hormones were injected. After introducing broodstocks to 40- tone oval tanks, spawning occurred only in female and also some ingected broodstocks were spawned artificially and all obtained larvae died after four days. At third stage 6 g kg-1 and 1000 Iu kg-1 body weight of PG and HCG hormones were injected to broodstock respectively. HCG hormone injected in two steps (1/2 dose each stop in 24 hours duration). Metoclopramide was used at the first step and PG hormone injected with second step of HCG coincidentally. In this method spawning, fertilization and fry production occurred. The results indicated that sobaity, with hormone injection is able to spawn at 12-19 c (which is available in Khouzestan in March). The time of hatching was 42-50 hours, absorption of larvae Yolk sac 96-120 hours. The size of one- day- larvae was 1.4- 1.7mm and 65-day- fry was 24mm.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biotechnic ; PG ; HCG ; LRHa ; Fries ; Rearing ; Brood stock ; Spawning ; Sex ratio ; Hormone ; Metochlopramide ; Fertilization ; Hatching ; Larvae ; Sparidentex hasta ; Sobaity ; Investigation ; Propagation ; Fingerling
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 55pp.
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  • 7
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25493 | 18721 | 2018-10-05 07:06:42 | 25493 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: Out put of sturgeon fish hatcheries on the Northern provinces analyzed. Unfortunately, for many reasons such as decreasing of brood fishes ,unsuitable and unprofessional managements, lack of sufficient financial supports, ageing of laboratory and incubation instruments, unemployment of energetic expertise sturgeon propagation and restocking programmes get decreasing trends. Thus managers must planning for activating of sturgeon restocking and propagation subjects.
    Keywords: Aquaculture ; Iran ; Alborz region ; Sturgeon hatchery ; Unsuitable management ; Propagation ; Restocking programme ; Sturgeon ; Brood fishes
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 44
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  • 8
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    In:  http://aquaticcommons.org/id/eprint/21814 | 18721 | 2018-01-08 09:53:50 | 21814 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-02
    Description: This project was carried out in the year 2003 in Khuzestan province waters to determine the best artificial propagation techniques for mass production of Barbus xanthopterus. The fish is one of the most valuable and economic species in the area. The propagation was started in late March and continued till late April while suitable temperature was 21-24.5 C. A number of 23 female broodstock with mean weight and length 3.85±0.45kg and 64.95±21cm respectively with a sex ratio of 2:1 male to female were used in the process. The amount of hypophysis injection was 4mg/kg weight of fish and two injections with 10-12 h interval to 10:90 were undertaken. Spawning success was 87% in broodstock. Latency period was 15- 17h and the incubation duration was 59-60h in 23-25 C. The fish eggs has a low stickiness and the count of dry and water-absorbed eggs were 480±32 and 287±25g, respectively. In the twice-injected broodstock, the fertilization rate was 77.22±3.1%, the hatching rate was 81.2±1.89% and the survival rate was 83.4±2%. Size of the dry and water-absorbed eggs was 1248±45 and 2110±125, respectively. Washing time with fertilization liquid was 10 min for removing stickiness. In the end, 660 thousand larvae were produced and released to earthen ponds for culture.
    Keywords: Aquaculture ; Biology ; Aquaculture ; Propagation ; Broodstock ; Spawning ; Barbus xanthopterus ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 137-142
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  • 9
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25587 | 18721 | 2018-10-07 11:26:14 | 25587 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: This project was conducted in imam Khomeini mariculture research state from October 2010 to June 2013 to compare reproductive performance between wild and domesticated Sobaity seabream broodstocks. In 3 years wild broodstocks did not spawn in 5 and 10 fiberglass and concrete tanks but domesticated broodstocks spontaneously spawned from February to March. In the first year domesticated broodstock in ratio of 3 females to 6 males allotted in 10 mt concrete tanks in triplicate. the about 2776000 eggs produced from 9 females and 18 males but further heavy mortality occurred because of winter shock syndrome and suppression of immunity system. Mean temperature, salinity and PH in incubation period was 16.5˚C (range between16-18˚C), 45ppt, 8.5 respectively. Mean floating eggs and hatch percent was 15.5% and 8.9% and about 19000 larvae produced. In the second year domesticated broodstock in ratio of 9 females to 23 males allotted in 5 mt fiberglass tanks in triplicate .about 17540000 eggs acquired from 27 female and 69 male broodstocks. Mean temperature, salinity and PH in culture period was 24.8 ˚C(range between20-28.3˚C), 47.5 ppt, 8.4 respectively. Mean floating eggs and hatch percent was 58.94% and 84% and about 8640000 larvae produced and stocking density was 10-30 larvae per liter. After 61 days mean production and survival were 503.3 (range between 140-1220) larvae per cubic meter and 5.3% (range between 0.47–12.2 %) respectively. Final mean weight of fry was 2.6 gr. In the third year domesticated broodstock in ratio of 3 females to 6 males allotted in 5 mt fiberglass tanks in triplicate. about 6570000 eggs acquired from 9 female and 18 male brood stocks. Mean temperature, salinity and pH in culture period was 23.9˚C(range between 19.5-28.4˚C), 45, 7.6 respectively. Mean floating eggs and hatch percent was 54.7% and 81.6% and about 2889800 larvae produced and stocking density was 10-30 larvae per liter. At the end of 87 and 89 days of husbandry the mean production and survival were 359 (range from 300 to 397) larvae per cubic meter and 2.7% (range between 1.32–3.8 %) respectively. Final mean weight of fry was 3.5 gram and Larvaeculture in the last 2 years carried out in 5 cubic meters fiberglass tanks. It seems to domesticated broodstocks because of spontaneous spawning, long spawning period, more brood stocks and possibility of reusing them in the next year are very economical for propagation than wild broodstocks.
    Keywords: Aquaculture ; Iran ; Sparidentex hasta ; Fry production ; Spawning ; Larvae culture ; Propagation ; Sobaity ; Sparidentex hasta ; Rearing ; Mariculture ; Broodstocks ; Temperature ; Salinity ; pH ; Survival
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 50
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  • 10
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25711 | 18721 | 2018-10-10 09:44:09 | 25711 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: The aquaculture activity in provinces of north of Iran, in spite of fast progressive and possess a series of achievement and success, there was some failure, difficulties, limitation and restriction. To planning for further expansion in this failed, this study is managed. The culture of rainbow trout is practice in individual farms, small farms, water resources, earthen ponds, recycling ponds etc, which each method have its potential, failure and limitation that are consider in the present work. At the end, based on the situation of production in past years, and considering each of factors mentioned above, the success, failure, difficulties, limitation and restriction points of aquaculture of rainbow trout in technical poin of view are investigated and some command for improvement for each production method are presented. The development of aquaculture in recent years is based on extension of farms and increasing density of fish in fish pond. In contrast of many production activities, the propagation and culture of fish is inconstant work. This variability makes a potential for better income, occupation and job, increasing in production etc. This study make a better planning using this activity.
    Keywords: Aquaculture ; Iran ; Alborz ; Rainbow trout ; Water resources ; Fish culture ; Aquaculture ; Investigation ; Propagation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 66
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