Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Frequency of Mugil cephalus in catch composition of stake-nets in the Hormozgan Province waters
1
8
FA
H.
Akbari
10.22092/isfj.2002.115594
<strong>Mugil cephalus belongs to Mugilidae family and is found in the creeks and coastal waters of the Hormozgan province and mostly are caught by castnet and selnet.</strong>
<strong> Regarding to study this species and determination or the frequency of this species 14 stake-nets were selected in Bandar Abbas, Qeshm and Khamir regions. Sampling were carried out monthly.</strong>
<strong>The weight and frequency percentage of M. cephalus in proportion to the total edible fishes were estimated 1.33 and 0.19%, respectively. Also, it was that this species among the other Mugilidae had lower frequency (5%). The length measurement results showed that most of mullets were small and young (immature) with 13-15 cm length. The most abundance of the species was observed in March.</strong>
MULLET,Mugil cephalus,Hormozgan province,Iran
https://isfj.areeo.ac.ir/article_115594.html
https://isfj.areeo.ac.ir/article_115594_48dbbf0def9f8a7c01b38668d35a695d.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Comparison study on different synthetic hormones used for artificial propagation of Stellate Sturgeon Acipenser stellatus stellatus Berg, 1932
9
24
FA
Sh.
Behmanesh
10.22092/isfj.2002.115599
<strong>In this study the effects of LHRHa, a mixture or common carp and sturgeon pituitary (CCP +SPE), Thyroxin hormone (T3) with commonly method used in hatcheries were compared. The experiments were conducted using different doses of hormones with several replicates in order 10 determine the most effective dose. Total number of broodstocks were females and 22 males. Prior to injecting the fishes, the Germinal Vesicle (GV) situation of all broodstocks were determined. The results showed that bloodstocks has been injected with LHRHa were very satisfactory and the percentage of response, fertilization and hatching of them had significantly different. The least effective dose of LHRHa that induced maturation was single injection and 350-375</strong><strong>µ</strong><strong>g/fish for double injection. Thus it was determined that under the experimental condition, 20.0 to 31.2</strong><strong> µ</strong><strong>g/Kg of body weight of broodstock was the most effective dose. In the case of male broodstocks LHRHa was the most effective hormone and the sperms collected from these broodstocks were better in quality and quantity.</strong>
<strong>The most effective dose of this hormone for males was determined to be 200</strong><strong> µ</strong><strong>g/fish or 27.7 to 31.2</strong><strong> µ</strong><strong>g/kg of body weight. The best dose of mixture of CCP + SPE which all broodstocks responded was7.0mg/kgBW</strong>
<strong>+2.5mg/kgBW for females and 7.0mg/kgBW+ 1.5mg/kgBW for males.</strong>
<strong> In the case of broodstocks that were first injected thyroxin and latter injected SPE it must be stated that since the thyroxin used was edible grade none of the broodstocks attained maturity. Therefore the results obtained in this treatment were not satisfactory.</strong>
A. stellatus stellatus,LHRHa,C.CP,T3
https://isfj.areeo.ac.ir/article_115599.html
https://isfj.areeo.ac.ir/article_115599_178f81ab10ff537e19e9d79fa7e6c031.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Study on some hematological factors of Salmo trutta caspius
25
34
FA
H.
Jamalzadeh
hamidreza_jamalzadeh@yahoo.com
A.
Keyvan
Sh.
Jamili
isfj@areo.ir
Sh.
Oryan
sh_oryan@yahoo.com
A.
Saeidi
aliasgharsaeedi@yahoo.com
10.22092/isfj.2002.115600
<strong>Regarding to measure some hematological factors of Caspian Salmon (Salmo Trutta caspius), 55 immature and 21 mature individuals were studied. The main results were: </strong>
<strong> </strong>
<strong><span style="text-decoration: underline;">Immature</span></strong>
<strong><span style="text-decoration: underline;">Mature</span></strong>
<strong>- Hemoglobin value (gr/dl)</strong>
<strong>7.20</strong>
<strong>9.87</strong>
<strong>- Hematocrit</strong>
<strong>34.1</strong>
<strong>39.2</strong>
<strong>- Mean No. of red blood cells (per mm3)</strong>
<strong>934300</strong>
<strong>1306200</strong>
<strong>- Mean No. of white blood (per mm3)</strong>
<strong>8380</strong>
<strong>6219</strong>
<strong>- Mean No. of platelets (per mm3)</strong>
<strong>21180</strong>
<strong>13159</strong>
<strong> </strong>
<strong>As the results showed the number of white blood cells and platelets in immature individuals were more than mature specimen.</strong>
<strong>The obtained results of blood indices were as follow: </strong>
<strong> </strong>
<strong> </strong>
<strong><span style="text-decoration: underline;">Immature</span></strong>
<strong><span style="text-decoration: underline;">Mature</span></strong>
<strong>- Mean MCV (FL)</strong>
<strong>385.4</strong>
<strong>302.9</strong>
<strong>- Mean MCH (Pg) </strong>
<strong>82.0</strong>
<strong>75.5</strong>
<strong>- Mean MCHC (%) </strong>
<strong>21.6</strong>
<strong>25.6</strong>
<strong>- Lymphocyte (%)</strong>
<strong>96.1</strong>
<strong>69.9</strong>
<strong>- Neutrophil (%)</strong>
<strong>3.4</strong>
<strong>29.4</strong>
<strong>- Monocyte (%)</strong>
<strong>0.52</strong>
<strong>1.14</strong>
<strong> </strong>
<strong>Notice: Eosinophil and basophil cells weren't observed.</strong>
<strong> </strong>
: Salmon,fruffa caspigo,hematology. blood :cells
https://isfj.areeo.ac.ir/article_115600.html
https://isfj.areeo.ac.ir/article_115600_59780ea1348aa53cfd5cc6f13574fd32.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Some biological aspects of Thunnus albacares and Katsuwonus pelamis in Oman Sea (Sistan-o-Balochestan Province)
35
62
FA
A.
Hossieni
ab_hossaini@yahoo.com
10.22092/isfj.2002.115601
<strong>Some biological aspects of yellowfin and skipjack tuna according to catch data of traditional gillnet fisheries were studied in the north of Oman Sea during 1997-99. Based on Gonadosomatic Index (GSI) results, the spawning period or yellowfin begins in spring and reaches to the peak level in May-June. </strong>
<strong>For skipjack tuna, in addition to the above mentioned spawning period, the other observed period was found in autumn-winter with a peak in January-February. The first length or maturity (LM50%) of yellowfin and skipjack tuna females were estimated 76 and 61 cm, respectively. </strong>
<strong>Observation of stomach contents showed that squid was the major components of diet for yellowfin and fish for skipjack tuna. </strong>
<strong>A comparison between mean length of different years and landing sites using two-way analysis of variance indicated a significant differences, </strong>
<strong>The length-weight equations showed an algometric growth in tuna and isometric growth in skipjack.</strong>
Thunnus albacares,Katsuwonus pelamis,Feeding habits,Oman Sea,Iran
https://isfj.areeo.ac.ir/article_115601.html
https://isfj.areeo.ac.ir/article_115601_61cfb3f43207c48938f1d9e91bd0ca85.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
The impacts of Mnemiopsis leidyi on Kilka resources in the southern Caspian Sea
63
72
FA
H.
Fazli
hn_fazli@yahoo.com
A.
Rohi
roohi_ark@yahoo.com
10.22092/isfj.2002.115602
<strong>There are 3 species of kilka in the Caspian Sea consist Of: Clupeonella engrauliformis, C. grimmi and C. cultriventris. These species are caught by fishing method of tunnel net with underwater light in the inshore waters (depths of 40-100m). </strong>
<strong>The maximum recorded catch for three species in the Iranian waters had been 85000 tons per year during period of 1998-99. In the next years (2000-2001) despite of increasing the effort, the amount catch was dropped drastically. </strong>
<strong>The result or collected commercial catch data showed that there are some changes in kilka catch compositions and also the frequency of common kilka has been increased since 1998. On the other hand, this species was a main part of commercial catch composition during all months. </strong>
<strong>Meanwhile in the previous years, they were observed only during warm seasons (spring and summer).</strong>
<strong> Based on fishermen and personal observations, the transparency of sea Water Was decreased rapidly during the years of 1999-2000 and at that time there were found a high abundance of Mnemiopsis leidyi in commercial catches.</strong>
<strong>Simultaneously, with an increase in the mass of Mnemiopsis leidyi, the amount of catch and CPLUE or kilka have been sharply decreased.</strong>
MNEMIOPSIS LEIDYI,Kilka,SOUTHERN CASPIAN SEA,Iran
https://isfj.areeo.ac.ir/article_115602.html
https://isfj.areeo.ac.ir/article_115602_50229d44307d45dad81a7a953b339f65.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Identification of different fish species in Kargan-Rood River (in Guilan province, 1994)
73
84
FA
K.
Nazari
10.22092/isfj.2002.115603
<strong>Kargan-rood is one of the most important rivers in the west of Guilan province. Identification of fish species of this river was carried out in 1995-96. Ten stations were selected for sampling and samples were collected monthly by using castnet, beach-seine and hook. </strong>
<strong>The 12 species belong to 5 families were identified in which family of Cyprinidae with 6 species (and 6 different genus) were the most dominant family. The identified species were: </strong>
<strong>Rutilus frisii kutum, Chalcalburnus chalcoides, Capoeta capoeta gracilis, Barbus Alburnus eichwaldi, Leuciscus cephalus, Caspiomyzon wagneri, Cobitis caspia eichwaldi, Gobius kessleri, Salmo trutta caspius, Salmo trutta fario, Syngnathus abaster.</strong>
FISHES,Kargan-rood,Guilan province,Iran
https://isfj.areeo.ac.ir/article_115603.html
https://isfj.areeo.ac.ir/article_115603_322f6c410a9cbd6da2dad6f0f67d9678.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Cytogenetic study on Artemia from Urmiyah lake
85
100
FA
M.
Yarmohmmadi
M.
Porkazemi
pourkazemi@sturgeon.ir
A.
Kamali
kamali.abolghasem@gmail.com
10.22092/isfj.2002.115604
<strong>To determine the chromosome numbers of artemia brine-shrimp in Urmiyah Lake (Azarbaijan-e- Gharhi province), cytogenetic studies were carried out on artemia cysts. In order to identify the collected samples, each sample of cysts, first incubated in sea water (35 ppt salinity) and then to determine the reproduction mode, the cyst samples were feed with Dunaliella tertiolecta, for three generations (F3) up to adult. The results showed that there were two types of anemia in terms of reproduction mode, namely bisexual and parthenogenesis. </strong>
<strong>Chromosome spreads were prepared from freshly hatched nauplius squashing method. The results of counting 100 metaphases plates from bisexual artemia and 35 metaphases plates of parthenogenetic specimen, it was found that the number of chromosomes in these 2 types of artemia were the same, 2n=42. In these population, very small chromosomes with metacentric, submetacentric, telocentric and acrocentric types were observed. Karyotype formulas of bisexual and parthenogenetic artemia were determined as 2n=30 M / SM+12 A/T and 2n=32 M / SM+10 A/T, respectively.</strong>
<strong> All studied samples in Interphase stage lacked and chromocenter. Due to very small size of chromosomes, it was difficult to do precise determination of the type of chromosomes and in this regard various C.banding experiments were performed. Also, since chromosomes in artemia lacked any chromocenter, the differentiation of chromosomes based on the types of C.banding was impossible.</strong>
Artemia,Chromosome. C-handing. Urmiah,Iran
https://isfj.areeo.ac.ir/article_115604.html
https://isfj.areeo.ac.ir/article_115604_f187b27fc339d54fc1452d5ea19f9e94.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Infection of Tinca tinca with Asymphylodora tincae Modeer, 1790 (Trematoda) in Anzali Lagoon
101
106
FA
J.
Daghigh rohi
B.
Mokhair
10.22092/isfj.2002.115606
<strong>Tinca tincta (Linnaeus. 1958) is a local fish of Anzali lagoon. Study on parasites of this fish was carried out in the college of natural resources of Tehran University. Among collected parasites, Asymphylodora tincae (Modeer.1790) is reported for the first time from Iran. Biometrical characters of the identified parasite have been explained and it was found that 18.75% of the fishes were infected to this parasite. There was not observed any infection in fishes smaller than 14.5 cm length, Meanwhile, the bigger fishes showed more infection and there was a direct relationship between percentage of infection and length of fish.</strong>
Asymphylodora tincae,Anzali lagoon,Iran
https://isfj.areeo.ac.ir/article_115606.html
https://isfj.areeo.ac.ir/article_115606_15a5881d12c533c6ee1b94013cb49c59.pdf
Agricultural Research,Education and Extension Organization
Iranian Scientific Fisheries Journal
1026-1354
2322-5998
11
1
2002
03
21
Karyotyping and number of chromosomes of Silver Carp (Hypophthalmichthys molitrix)
107
114
FA
A.
Varasteh
M.
Hossein zadeh
M.
Porkazemi
pourkazemi@sturgeon.ir
M.
Noroz fashkhami
10.22092/isfj.2002.115607
<strong>Karyotype and number of chromosomes of silver carp (Hypophthalmichthys molitrix) were determined by using tissue-squashing method and gimsa staining. </strong> <br /><strong>In this experiment 80 larvae and 10 fingerlings (weighting 1-8 g) were examined and totally 30 chromosomal slides were prepared. The obtain results indicated that the number of chromosomes in this species was found 2n=48 (with 88 chromosomal arms). Consist of 6 pairs metacentric (M), 14 pairs submetacentric (SM) and 4 pairs of Acrocentric (A). The karyotype formula can be stated as: (6M + 14SM + 4A).</strong>
Karyotype,Chromosome,Silver Carp .Hypophthalmichthys molitrix),Iran
https://isfj.areeo.ac.ir/article_115607.html
https://isfj.areeo.ac.ir/article_115607_95d60728b839666d62cdd6be8171904f.pdf