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Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Title: 
Author(s): 

Issue Info: 
  • Year: 

    0
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    -
Measures: 
  • Citations: 

    9
  • Views: 

    1144
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1144

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Issue Info: 
  • Year: 

    1380
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    101-103
Measures: 
  • Citations: 

    0
  • Views: 

    1580
  • Downloads: 

    0
Abstract: 

در مرداد ماه سال 1379 در یکی از مزارع پرورش ماهی قزل آلای استان کرمانشاه با تولید ده تن در سال، تلفات شدید ماهیان در وزن های 100 تا 200 گرم دیده شد. علایمی شامل کم اشتهایی، سیاهی پوست، تجمع ماهیان در ورودی و خروجی آب استخرها و شنا در سطح آب در اکثر ماهیها دیده شد. تعداد 20 عدد ماهی بطور تصادفی از استخرهای مختلف صید و طبق رعایت استاندارد به آزمایشگاه حمل گردید. در تمام ماهیان صید شده، حباب گاز در ناحیه پوست و باله ها و روی سرپوش آبشش ها مشاهده شد. در ده درصد آنها حباب های گازی در داخل دهان و در بیست درصد علایم اگزوفتالمی یک طرفی یا دو طرفی مشاهده گردید (شکلهای 1، 2 و 3).

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1580

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Author(s): 

EBRAHIMI M.

Issue Info: 
  • Year: 

    2001
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    1-12
Measures: 
  • Citations: 

    3
  • Views: 

    1793
  • Downloads: 

    0
Abstract: 

The research project of "Identification of Kerman Province Fishes" was carried out from 1996 to 1997. In this study, the fishes of the main rivers of this province, namely: Baft, Soltani, Halil-rood, Delta-rood, Seyyed-Morteza, Rabor, Roodbar and Halil-kouchak were identified. During one year sampling from above mentioned rivers, a total of771 samples were collected which they belong to 2 orders, 3 families and 7 species. The identification fishes were: Capoeta damascina, Cyprinion watsoni, Garra persica, Carassius auratus, Cyprinus carpio from CYPRINIDAE family. Nemacheilus sargadens;s from COBITlDAE family and Channa gachua from CHANNIDAE family.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1793

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Author(s): 

OMIDI S.

Issue Info: 
  • Year: 

    2001
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    13-34
Measures: 
  • Citations: 

    0
  • Views: 

    824
  • Downloads: 

    0
Abstract: 

Shrimp aqua culture industry have started in coastal waters of Persian Gulf since 1994. This industry will face restrictions of aquaculture problems on evironment, therefore studies on these probable problems are necessary for development of aquaculture in this region. This survey was carried out in Helle region to understand effects of aquaculture industry on coastal waters of Bushehr, in 1998. The variations of selected water quality parameters in influent water, effluent water and at sea were controlled monthly. The results show that the quality of water in effluent canal was more than other stations every month, variations of some important parameters of this station are as follows: Ammonia (0.06-0.30 mg/lit), Nitrate (0.29-1.96 mg/lit), Phosphate (0.009-0.038 mg/lit), Nitrite (0.006-0.010 mg/lit). Comparison of above data with permitable range of municipal and aquaculture waste and comparing the present data with data of normal condition of region, showed that aquaculture industry of Helle region have not had any obvious negative effect on coastal waters of Bushehr.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 824

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Author(s): 

SALEHI A.A. | FOROGHIFARD H.

Issue Info: 
  • Year: 

    2001
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    35-56
Measures: 
  • Citations: 

    0
  • Views: 

    1069
  • Downloads: 

    0
Abstract: 

Dissolved oxygen and transparency are two main factors in management of shrimp culture. In this regard, three Indian white shrimp culture farms in Tiab region were selected and in each farm three ponds were studied randomly. Dissolved oxygen samples were collected two times per day (morning and evening) from surface and maximum depth of the ponds. The transparency of water was measured by secci-disk daily, at 15:00 P.M. The Results showed that amount of dissolved oxygen in afternoon samples were more than 3.5 mg/lit which is suitable for growth of shrimp but in morning time samples the level of Dissolved oxygen were unsuitable especially in ponds which were not equipped with any aerator. Also, the long-arm aerators showed higher and better efficiency than short-arm aerators. From point of transparency, the results showed that in the beginning of culture period, the transparency was high (more than 100 cm) and gradually decreased.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1069

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Issue Info: 
  • Year: 

    2001
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    57-70
Measures: 
  • Citations: 

    2
  • Views: 

    1225
  • Downloads: 

    0
Abstract: 

Considering the reduction of valuable commercial fish in Anzali lagoon during last decades and presence of the silver crucian carp with high frequency; the research project of "Biological aspects and population dynamics of Carassius auratus" was designed. The study area was stratified to four regions (Abknar, Siah-keshim, Markazi and Sheyjan). Sampling were carried out bi-weekly by using electro-shocker. The mean fork length and mean weight for both sexes were measured 19.5±5.8 cm, and 196.8±137.4 g respectively. Also, the mean age was estimated 2.6±1.3 years (n=750) and minimum and maximum fork length were measured 2.5 and 31:5 cm respectively. The mean length, weight and the age of silver crucian carp in Siah-keshim region were higher than the other regions. The spawning season of this species was found from May to June. The results showed a sex ratio of F: M = 99.3: 0.7. Some calculated population parameters were as follows: exploitation rate = 0.47, L = 36.0 cm and K = 0.23 per year.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1225

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Issue Info: 
  • Year: 

    2001
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    71-88
Measures: 
  • Citations: 

    1
  • Views: 

    7824
  • Downloads: 

    0
Abstract: 

Sex and maturity determination of live fishes without external sexual dimorphism or when there is no developed external characters is very important from different aspects. In this regard, the ultrasonography methods was used to determine sex and maturity of Persian sturgeon (Acipenser persicus). 142 collected samples of live fishes of this species (with an age range of 13-20 years) from Caspian Sea were preserved in water tanks and scanned under 5.0 and 7.5 MHZ linear pie medical transducer. Frontal view of right or left lateral side of each fish between pectoral and anal fins were obtained echogenicity and morphologic ultrasonographic findings were studied for evaluting the difference between testis and ovary and their maturity status. The results obtained from ultrasonography were confirmed by further necropsy examinations. The ultrasonographic accuracy for sex and maturity determination were 100% and 98.6%, respectively. It can be recommended that this method can be used with an accurate method to determine sex and maturity of Persian sturgeon.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 7824

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Issue Info: 
  • Year: 

    2001
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    89-100
Measures: 
  • Citations: 

    9
  • Views: 

    1159
  • Downloads: 

    0
Abstract: 

The karyology of bream (Abramis brama) were done for the first time in Iran. This study was conducted on chromosomal number, chromosome arms and karyotyping of bream from the Southern part of the Caspian Sea with preparing chromosomal extensions on the base of Squash method. The number of metaphase plates using Squash method on renal and gill tissues was determined as to be 2n=50 and the number of chromosome arms was NF=82.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1159

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