ORIGINAL_ARTICLE
Study of Mycoflora in cultured Indian white shrimp (Penaeus indicus) in Abadan, Iran
The development of the commercial culture of penaeid shrimps has been accompanied by the occurrence of infectious and noninfectious diseases. The most important penaeid diseases are caused by organisms that are part of the normal microflora of penaeids. In 1998, the samples were collected from five farms in Ghofase area (Ahadan) 2-5 ponds in each farm. The shrimps of these ponds were preserved in full hygienic conditions, from each pond, at least 5 samples were collected and then transferred to the Aquatic Diseases Laboratory of Khouzestan Fisheries Research Center. The main tissues of Gill, Hemolymph, Hepatopancreas and cuticle of live-shrimps were studied in the laboratory. In this research, a total of 40 fungal species were isolated from different tissues with high abundance in Hepatopancrease (19 species) and Hemolymph (12 species). Aspergillus niger was identified as the most abundant species.
https://isfj.areeo.ac.ir/article_115815_321999694ed4d620fe9d678e2a1144fb.pdf
2002-02-20
1
10
10.22092/isfj.2002.115815
mycoflora
Indian while shrimp
Penaeus indict"
ABADAN
Iran
N.
Hosseinian
1
AUTHOR
H.
Riahi
h_riahi@cc.sbu.ac.ir
2
AUTHOR
M.
Mehrabi
drmehrabii@yahoo.com
3
AUTHOR
M.
Hosseini
4
AUTHOR
ORIGINAL_ARTICLE
Introducing of genetic indicators for identification of three commercial shrimps from Persian Gulf and Oman Sea by using PCR-RFLP analysis
Some bottom trawls were carried out in the Persian Gulf and Oman Sea (Hormozgan and Bushehr provinces) regarding to study the main three commercial species shrimp, namely: Penaeus indicus, P. merguiensis and P. semisulcatus. Six samples or each species were collected for further examinations. Total DNA Of each sample was extracted using the phenol and chlorophorm method. mtDNA was ampliphied by using a pair of primers from sequencing of two Of Cytocrom Oxydase unit I. The PCR products were digested using nine restriction endonuclease enzyme. Seven enzymes showed polymorphic patterns among different species, and 3 enzymes of Hinf I, Hinc I and Rsa I were recognized as genetic markers for species identification or shrimps.
https://isfj.areeo.ac.ir/article_115816_31cd81a960a8369c22b3456128b84814.pdf
2002-02-20
11
20
10.22092/isfj.2002.115816
Shrimp
PCR. Persian Gulf
Oman Sea
Iran
S.
Rezvani
rezvani@ifro.ir
1
AUTHOR
ORIGINAL_ARTICLE
Cultivation of Gracilaria (Gracilaria corticata) in the Qeshm Island
The cell walls of certain red algae such as Gracilaria is the sole source of a polysaccharide of major economic importance, agar. Agar is the best known for its use in preparing media for culturing microorganisms. Mariculture of the Gracilaria was conducted in 4 locations of the Qeshm Island during the spring and summer oi 1999. Three culture methods (net, rope, and basket) were tested. The results tested by ANOVA and indicated that the increase in matter up to 45 days after planting was significant (P<0.05) Also the mean yield ropes and nets which were subjected to weekly cleaning was significantly higher than from the uncleaned ropes or nets. The yield net method of cultivation was significantly higher than rope. Experimental results showed that the light intensity, average of temperature, wind and wave action, water and sediment nutrition and some grazers such as turtle had a significant Influence on growth of Gracilaria.
https://isfj.areeo.ac.ir/article_115817_862803bb95df125f05285d20a23f0710.pdf
2002-02-20
21
36
10.22092/isfj.2002.115817
Gracilaria
cultivation
Qeshm Island
Iran
Y.
Filizadeh
1
AUTHOR
ORIGINAL_ARTICLE
Study of feeding habits of Yellowfin Tuna (Thunnus albacares) in the Oman Sea
Feeding habits of yellowfin tuna were studied in the Oman Sea in 1998-99. 546 stomach contents with fork length frequency 38-173 cm were studied and classified as full, semi full and empty. Occurence of empty Stomachs Were high (63.10 %) in males and 59.37%: in females) in the specimens which indicated daily feeding of yellowfin tuna. Purpleback flying squid (Sthenoteuthis oualaniensis) was the most dominant prey species observed in this study (60% in males and 57% in females), occurence of teleost fishes were found to be second (38% in mates and 42% in females). Furthermore, crabs were also identified as a part stomach contents with a low frequency (1-2%).
https://isfj.areeo.ac.ir/article_115819_0d4f8e9d0e8a3ff396d90292ecce43e3.pdf
2002-02-20
37
48
10.22092/isfj.2002.115819
Yellowfin Tuna (Thunnus albacares)
Feeding habits
Oman Sea
Iran
F.
Keymaram
farhadkaymaram@gmail.com
1
AUTHOR
H.
Emadi
emadihossein@yahoo.com
2
AUTHOR
B.
Kiabi
3
AUTHOR
ORIGINAL_ARTICLE
The effect of fisheries activities on Spiny Lobster resources
The commercial fishing of spiny lobster (Panuliras homarus) has been started ince 1991 in Sistan-o-Baluchestan provincewith an annual catch 20-50 tons. In 1is paper, it has been tried to study the fishing pressure on this resources during years. In this regard, the biometric data of 4 years consist of 1991, 1994, -1996 and 1997 ere collected for further statistical analysis, These data are: total length, total eight, carapace length. sex. maturity stages, fishing season and tishing ground- The nalysis was done hy using Foxpro and SPSS programms. The results of the mean ngtll and mean weight of this species showed a decreasing [rend from starting it should he the rcsulL of overfishing.
https://isfj.areeo.ac.ir/article_115820_5b172a5e8c5dea1d42d700775f3dceb6.pdf
2002-02-20
49
60
10.22092/isfj.2002.115820
SPINY LOBSTER
Carapace length
Chabahar
Sistan•O-Baluchestan Province
Iran
M.
Mazlomi
1
AUTHOR
ORIGINAL_ARTICLE
Parasitological investigations on Rutilus rutilus caspicus from south-east of the Caspian Sea (Iran)
A parasitological investigations on Rutilus rutilus caspicus from south-cast of the Caspian Sea (coast of the Mazandaran and Golestan Provinces, Iran} was carried out in 1997. During this study a total of 140 fish specimen were examined. The list of parasites and their prevalence of infections are as follows: Anisakis larvae, in live fish (37%), Aspidogaster limacoides in the intestine or only one fish (0.7%). Bothriocephalus gowkongensis in the intestine of two fishes, Dactylogyrus turaliensis the gills of 83 fishes (67%) and finally Diplostomum spathaceum in the eyes of 10 fishes (12%). This is the record of Anisakis larvae, Diplostomum spathaceum, Aspidogaster limacoides from the rutilus caspicus in Iran, under the certain condition, these parasites may produce mortality in the farms.
https://isfj.areeo.ac.ir/article_115821_1d2156d5e291c040f92664199a141473.pdf
2002-02-20
61
74
10.22092/isfj.2002.115821
Parasitology
Rutilus rutilus caspaeus
Caspian Sea
Iran
M.
Masomian
ifro_masoumian@yahoo.com
1
AUTHOR
J.
Setareh
2
AUTHOR
B.
Mokhair
3
AUTHOR
ORIGINAL_ARTICLE
Population dynamics of Green Tiger Shrimp (Penaeus semisulcatus) in the Persian Gulf (Bushehr Waters)
The population dynamics of Penaeus semisulcatus was studied out in the Persian (Bushehr province waters) through a series of research cruises conducted by the R/V Lavar. The growth and mortality parameters for both sexes were estimated by FLEFAN and FISAT computer programs. The following results obtained for males: L∞=37mm, K=1.8per year, t0=0.3, M=2.8, F=4.5 and Z = 7.3. These results for females were as follows: L∞=49 mm, K = 2.6 per year, t0=0.6, M=3.2, F=6.7, Z=9.9. According to obtained results, the exploitation rate for males and females were 0.61 and 0.67, respectively and the ϕ-value was estimated 7.8 for males and 8.3 for female. The sex ratio Was M:F-1:1 and the spawning season was from January to March with the main peak in January. The maximum age for males and females were determined 21 and 19 months respectively.
https://isfj.areeo.ac.ir/article_115823_a63be1005e2c10536aff98c5a4fece95.pdf
2002-02-20
75
88
10.22092/isfj.2002.115823
Population Dynamics. Green tiger Shrimp
Bushehr Province
Iran
N.
Niameimandi
nniamaimandi@yahoo.com
1
AUTHOR
ORIGINAL_ARTICLE
Occurrence of Bopyridae Parasite (Epipenaeon elegans) in Green Tiger Shrimp in the Persian Gulf (Bushehr Waters)
This study was carried out to determine the infection of Penaeus semisulcatus to Epipenaeon elegans in Bushehr waters in 1994. The samples were collected during the fishing season from August to September. The sampling area were stratified to 3 strata of Northern, Middle and Southern and the percentage of infection was registered for each stratum seperately. Among 249 collected shrimps from the northern region (Daylam) and 107 samples from southern region (Charak-Rostami), no parasite was found. On the other hand, in the middle region (Bushehr), 541 specimen were collected in which 5 samples showed the infection to Epipenaeon (with frequency of 0.92 percent). 8
https://isfj.areeo.ac.ir/article_115824_26bc134138bc039d2523a93ba70628c5.pdf
2002-02-20
89
96
10.22092/isfj.2002.115824
Green tiger shrimp
Epipenaeon elegans
Bushehr Province
Iran
F.
Eslami
fr_eslami1689@yahoo.com
1
AUTHOR
B.
Mokhair
2
AUTHOR
ORIGINAL_ARTICLE
Identification of Zoothamnium in the shrimp culture farms (Bushehr Province -Helleh Region)
The present investigation was carried out in the Helleh shrimp culture farms (north-west of the Persian Gulf) to identify the infection of Green tiger shrimps (Penaeus semisulcatus) to protozoan of zoothamnium. During the culture period. 100 samples were collected from the ponds and then transferred to the laboratory for further observations. The results showed that all shrimps in different growth stages were infected to this parasite and with lengthening the culture period, the number of infectious shrimps were increased.
Furthermore, it was recognized that exoskeleton part was more affected by parasite than the other body organs. Also, the gills were in the second degree of prevalence.
It should be noted that zoothamnium spp. couldn't be assumed as a dangerous or important factor in infecting the shrimp ponds.
https://isfj.areeo.ac.ir/article_115826_e5d94da681d52d212ed9fb7ab6280daa.pdf
2002-02-20
97
105
10.22092/isfj.2002.115826
Penaeus Shrimp. Bushehr Province. Iran
A.
Malolahi
1
AUTHOR
B.
Mokhair
2
AUTHOR