ORIGINAL_ARTICLE
An investigation on abundance and distribution of Mnemiopsis leidyi in Guilan waters, southwest Caspian Sea
The alien ctenophore Mnemiopsis leidyi which was transported from the Black Sea into the Caspian Sea by the end 1990s has since affected this new ecosystem. We studied the spatial and temporal distribution of the ctenophore from July 2001 to July 2002 in three transects located in Lisar, Bandar Anzali and Sefidroud, in Guilan province. Four stations were established in each transect at a 5, 10, 20 and 50 meter bottom depth contours. Maximum observed biomass of the organism was 221.3±91g/m2 in October 2001 and the minimum was 8.3±3.8g/m2 in December 2001. The highest biomass of the organism was detected in the upper 0-20m water layer in areas 50 meters deep achieving 145.36± 67.33g/m2. The lowest biomass was in the 20-50 layers in areas 50 meters deep amounting to 1.9±0.95g/m2. Small specimens less than 10 mm comprised about 97% of the sampled population and the maximum length measured at 51-55mm. The largest average biomass was 112.3±48g/m2 detected in Lisar and the smallest biomass in the range 67.17±46.8g/m2 was seen in Anzali region. It was concluded that temperature, depth, salinity and food availability affected the distribution of Mnemiopsis leidyi in the sampled areas. It is also expected that the high biomass of the organism detected in the region may have significant effects on pelagic ecosystems of the Caspian Sea.
https://isfj.areeo.ac.ir/article_113869_21f007d01953617f5c982280302c0fe7.pdf
2005-11-22
1
16
10.22092/isfj.2005.113869
MNEMIOPSIS LEIDYI
distribution
Guilan province
Caspian Sea
Iran
S.
Bagheri
sia_bagheri@yahoo.com
1
Anzali
AUTHOR
ORIGINAL_ARTICLE
Cryopreservation of carp spermatozoa by different extenders
Production and storage of the best gametes are practices undertaken by fishery managers and researchers to improve fish reproduction technology and obtain the best spawners. The male spawners of carp (Cyprinus carpio) were chosen from two warm-water fish hatcheries near Rasht, Guilan Province. For the study, duration of motility of sperms, sperm density and fertilization rate were considered.
The best samples were chosen for cryopreservation with four different extenders and were checked by fertilization tests after seven days preservation in liquid nitrogen. Results showed that by 1:1 dilution rate, the Alsever’s solution had the best results. The fertilization rate, production of eyed eggs and larvae by this extender in a multistage cooling experiment were 45%, 47.81 and 22.63% respectively.
https://isfj.areeo.ac.ir/article_113870_b8df6d078724c1bcd0858c00ca7c5a0e.pdf
2005-11-22
17
30
10.22092/isfj.2005.113870
Carp. Cryopreservation. Sperm
Sh.
Baradaran noveiri
shahrouzbn170@gmail.com
1
Rasht
AUTHOR
M.
Porkazemi
pourkazemi@sturgeon.ir
2
Rasht
AUTHOR
P.
Kochinin
3
Ahvaz
AUTHOR
V.
Yavari
yavarivahid@yahoo.com
4
Ahvaz
AUTHOR
ORIGINAL_ARTICLE
A new method for artificial breeding of Acipenser stellatus
A new formulation of GnRH and synthetic compound of anti-dopamine domperidone was used for the first time in Iran to determine suitable physiological indexes for reproduction and to resolve the present problems of artificial reproduction in stellate sturgeon Acipenser stellatus. The study was conducted on 60 breeder Acipensers including 40 female and 20 male specimens. The fish were caught at stations in the vicinity of the SefidRud River in Guilan Province. Male spawners were treated using single injection method while females received dual injection (Bio-physiological control).
Propylene glycol (PG) was administered after the muscular injection near the second dorsal scute to increase the viscosity of the solution during absorption. Depending on the stage of sexual maturity in the fish, GnRH at doses of 5, 10, 15, 20, 30 µg/kg BW was used in combination with a dose of I or 2 mg kg of domperidone.
The position of G V was used as an index to determine sexual maturity in females while in males sexual maturity was determined on the basis of testis and sperm quality. The female fish showed GV in a range of 3.64 to 14.30. The results indicated that reduction of stress during catch, transportation, maintenance and handling and selection of breeders with suitable morphology will result in increased reproduction success.
It was also found that male breeders given a dose of 20 and 30 µg/kg BW GnRH along with 1 and 2 mg kg of domperidone respectively were the most successful in spermiation. For female breeders, those received a dose of 10, 15 and 20 µg/kg BW GnRH along with 2 mg/kg of domperidone exhibited the most suitable conditions in ovulation. These females responded well to artificial breeding provided they possessed G V in the range of 3.64 to 14.30 depending on the water temperature until the germinal vesicle broke down (in vivo).
Alleviating stress during capture, handling, transport and confinement, selecting breeders with suitable morphology and identifying correct stage of sexual maturity are the factors that help achieve higher production by substituting GnRH with a combination of GnRH and domperidone. Therefore, this compound is recommended as a suitable substitute for pituitary extract and other gonadotrophic analogues in the artificial breeding of Acipenser stellatus.
https://isfj.areeo.ac.ir/article_113873_85d1f559167f18a04591b5121a18ea17.pdf
2005-11-22
31
48
10.22092/isfj.2005.113873
Artificial breeding. Acipenser stellatus
Domperidone
M.
Bahmani
mahmoudbahmani@ymail.com
1
Rasht
AUTHOR
R.
Kazemi
rezkazemi2000@yahoo.com
2
Rasht
AUTHOR
M.
Pordehghani
mpourdehghani@yahoo.com
3
Rasht
AUTHOR
A.
Halajian
alihallajian@gmail.com
4
Rasht
AUTHOR
Y.
Vahhabi
5
Rasth
AUTHOR
M.
Mohseni
mahmoudmohseni@yahoo.com
6
Rasht
AUTHOR
R.
Malakzad
7
Rasht
AUTHOR
S.
Dazhandian
8
Rasht
AUTHOR
H.
Mohmmadi parshokohi
9
Rasht
AUTHOR
ORIGINAL_ARTICLE
An investigation on fish infection with Diplostomum spathaceum in Amirkalayeh Wetland
Infection Diplostomum spathaceum parasite is studied in 660 fish specimens from Amirkalayeh wetland of Guilan Province. We collected samples of fish belonging to Esox lucius (78 pieces), Perca fluviatilis (163 pieces). Tinca tinca (105 pieces), Silurus glanis (64 pieces). Carassius auratus 64 pieces. Blicca bjoerkna (95 pieces) and Rutilus rutilus (91 pieces) since spring to winter 2001 We found the highest infection rate in Rutilus rutilus (63.33%) while the lowest was seen in Silurus glanis (3.13%). The highest and lowest average infection severity were detected in Rutilus rutilus (13.49±10.82), and Tinca tinca (l respectively. The highest parasite abundance was related to Rutilus rutilus (7.04±0.93), and the lowest abundance was observed in Tinca tinca (0.06±0.27). Parasite count range was most in Rutilus rutilus (1-49), and least in Tinca tinca (1-2). Statistical analyses revealed significant differences in species, age, sex and season as related to the infection with the parasite.
https://isfj.areeo.ac.ir/article_113874_5a32a89824bbd92fc8af1d44b371abe3.pdf
2005-11-22
49
66
10.22092/isfj.2005.113874
Diplostonnun spathaceujn. Fish
Alnirkalaieh Wetland
Iran
H.
Khara
hosein.khara@gmail.com
1
Lahijan
AUTHOR
Sh.
Nezami
shabanalinazami@yahoo.com
2
tehran
AUTHOR
M.
Sattari
msattari@guilan.ac.ir
3
Guilan
AUTHOR
F.
Mir hashemi nasab
4
Anzali
AUTHOR
A.
Mosavi
5
Anzali
AUTHOR
ORIGINAL_ARTICLE
Economic analysis of sturgeon fingerling production in Iran
This study was conducted to provide procedures for increasing the productivity and profitability of sturgeon culture in Iran. We designed a questionnaire covering economic and ecologic aspects of the activity and distributed it to an expert team comprised economists, statisticians and aquaculturist experts. The team completed the questionnaires to determine the costs of production ofa single sturgeon fingerling in Iran, considering all sturgeon centers. Also, documents available in different sections of Iranian Fisheries, specially, accounting, budgeting and stock enhancement offices were resorted to. Cost of labour comprised 55% of expenditures whereas costs of feeding and fertilizer were found to be 14%. The maintenance cost was assessed as 7% and fertilized eggs cost was 6%. Results showed that on average, the production cost of a single sturgeon fingerling in Iran in the year 2000 was 992 Rls. Among all of the sturgeon breeding centers in Iran, Shahid Rajaee Aquaculture center had the lowest cost of production with 477 Rls. while Shahid Beheshti center had the highest cost amounting to 1224 Rls. The cost of labour has a large share in total expenditures, somewhat caused by the center not being active for six months each year. Tasking the labour force with other activities might reduce the total costs in such hatcheries.
https://isfj.areeo.ac.ir/article_113875_12f73bdfe1004d029125cf59afd72a72.pdf
2005-11-22
67
80
10.22092/isfj.2005.113875
Economic
Sturgeon
Stock Enhancement
Caspian Sea
Iran
H.
Salehi
hsalehi_ir@yahoo.com
1
tehran
AUTHOR
ORIGINAL_ARTICLE
Effects of weight on osmoregulatory ability of Salmo trutta caspius juveniles
Salmo trutta caspius is a commercial migratory fish species in the Caspian Sea. Over fishing and deterioration of natural spawning grounds of the species are two major causes depressing stocks of the fish in the Sea. Thus, artificial breeding and release of salmon juveniles into the Caspian Sea is now considered an urgent need towards the rehabilitation of the stocks of the fish.
This study was conducted in early 2004 to determine the ideal weight for the release of salmon fry in order to increase fishery return coefficients in the species. For this research, we used facilities of the Marine Fisheries Breeding and Research Center in Ghazian, along the coastal areas of the Bandar Anzali. Salmon juveniles used in this study belonged to the same generation. Fishes belonging to different weight classes (5, 10, 15 and 20g) were selected in a random design and stocked in two groups of sea water at 7% salinity and freshwater. Osmosis was studied using blood samples collected at 0, 3, 6, 12, 24, 72, 168 and 240 hours. Heparin tubes were used for sampling blood which was centrifuged to separate blood plasma. Osmotic pressure was determined using osmometer.
Statistical analysis of the results on variations in osmotic pressure showed that after 10 days of stocking fish in seawater (7%), fishes in all weight classes were capable of osmoregulation. Also fishes in weight classes 10, 15 and 20g were capable of osmore-gulation in the Caspian Sea water.
https://isfj.areeo.ac.ir/article_113876_01229be1c1821bbe2feb049661321d79.pdf
2005-11-22
81
96
10.22092/isfj.2005.113876
Salmo trutta caspius
Osmoregulation
ARTIFICIAL BREEDING
Caspian Sea
M.
Sayad borani
mohammadborani@yahoo.com
1
Rasht
AUTHOR
B.
Abtahi
behroozabt@yahoo.com
2
Noor
AUTHOR
M.
Bahmani
mahmoudbahmani@ymail.com
3
Rasht
AUTHOR
R.
Kazemi
rezkazemi2000@yahoo.com
4
Rasht
AUTHOR
S.
Dazhandian
5
Rasht
AUTHOR
J.
Daghigh rohi
6
Rasht
AUTHOR
A.
Amiri
7
Rasht
AUTHOR
ORIGINAL_ARTICLE
An audit of sturgeon reproduction in Iran over the years 1998-2002
Iranian Fisheries Institutes in the north of the country are involved in the reproduction, culture and release of five species of sturgeon fingerlings into the Caspian Sea. The species are Acipenser persicus, A. guldenstadti, A. nudiventris and A. stellatus and Huso huso. Shahid Beheshti Fisheries Centre as the first commercial hatchery started its activities in 1972 in Rasht, Guilan Province of Iran. The center achieved a production ceiling of 21.6 million fingerlings in 1997 and increased it to 24.5 million fingerlings in 1998. It is anticipated that the center will achieve a threshold of 45 million fingerlings in the next few years. During 1997-2002, the center has increased its extent from 377 hectares to 887 hectares.
For Huso huso production, 17 specimens were caught in 1998, of which 10 were injected that produced 1.08 million fingerlings and in 2002, the number of caught and injected Huso huso were 29 and 21 respectively, that resulted in production and release of 2.4 million fingerlings.
A number of 1062 A. persicus breeders were caught in 1998 of which 581 individuals were injected with hypophysis extract resulting in production and release of 22.5 million fingerlings. Of 538 injected individuals from among a total 802 breeder fish caught in 2002, a number of 12.3 million fingerlings were produced and released into the sea.
The catch for Acipenser stellatus in 1998 was 193 breeders that produced 623000 fingerlings. In 2002, the catch increased to 290 breeders, of which 67 received injections to produce 1.3 million fingerlings.
A total number of 0.67 million fingerlings of A. guldenstadti was produced in 1998 which was increased to 1.78 million in 2002. For Acipenser nudiventris, the number of fingerlings produced in 1998 was 0.4 which was increased to 1.56 million in 2002.
https://isfj.areeo.ac.ir/article_113877_3648132f57e3277e005e661b89f611eb.pdf
2005-11-22
97
112
10.22092/isfj.2005.113877
Huso huso
Acipenser persicus
A. stellatus
A. nudiventris
A. guldenstadti
Stock Enhancement
Iran
H.
Abdolhai
hossein_abdolhay@yahoo.com
1
tehran
AUTHOR
H.
Baradaran tahori
2
tehran
AUTHOR
R.
Amini
3
tehran
AUTHOR
ORIGINAL_ARTICLE
Comparative study on gonad development in Rainbow Trout (Oncorhynchus mykiss) reared in fresh and brackish water in the Yazd Province
Rainbow trout (Oncorhynchus mykiss) weighting 200±5 grams were used in this study to compare their gonad development in fresh and brackish water in Yazd Province.
The culture period lasted 140 days from October to March 2003 during which time the temperature (13.8±0.6), pH (8.18±0.12) and dissolved oxygen (6.2±0.1 1) of fresh and brackish water were kept nearly constant. The salinity of fresh and brackish water was 0.4 -0.5 and 14.3-14.7ppt respectively. The fish were fed common commercial trout food (Chineh GFT2) based on temperature and biomass.
Histological studies indicated that the gonad development is accelerated in brackish water where the males mature two month earlier than those reared in freshwater. The Gonadosomatic index (GSI) also affirmed the gonad development (P<0.05).
https://isfj.areeo.ac.ir/article_113878_165875377935a28dc2c5323a97806d0b.pdf
2005-11-22
113
126
10.22092/isfj.2005.113878
Gonad developtnent
Rainbow trout
Histological study
A.
Falahti marvast
1
Bushehr
AUTHOR
B.
Majazi amiri
bmamiri@ut.ac.ir
2
Karaj
AUTHOR
M.
Alizadeh
m_alizadeh47@yahoo.com
3
Tonekabon
AUTHOR
B.
Abtahi
behroozabt@yahoo.com
4
Noor
AUTHOR
ORIGINAL_ARTICLE
Isolation and identification bacteria and fungi of spoilage in Kilka meal production in Guilan Province
We Collected 75 samples from fish meal factories in Guilan Province (codes: 1,2,3,4,5,6,7) based on two times per month during June to December 2001. Standard reference are used in bacterial and fungous identification. The isolated bacteria are E. coli Proteus spp., Citrobacter spp., Shigella spp., Enterobacter Aerogenes Salmonella spp., Klebsiella spp., Hafina Alvei Yersinia Enterocolitica, Edwardsiella spp., Staphylococcus spp., Bacillus spp., Pseudomonas spp., Clostridium spp., Aeromonas Hydrophila Streptococcus spp. The highest and lowest bacterial contamination observed in E. coli and Hafina Alvei respectively. The most important isolated fungi were Aspergillus spp., Penicillium spp., Yeasts Rhizopus spp. The maximum and minimum fungi decay in samples were Penicillium spp., and Rhizopus respectively. The most and the least microbial spoilage have been seen in factories 1 and 2 respectively.
https://isfj.areeo.ac.ir/article_113879_758b0aa5d53575650553829db964aba9.pdf
2005-11-22
127
138
10.22092/isfj.2005.113879
: Fish meal
Kilka
Spolige
Bacteria
fungi
Guilan province
Iran
M.
Faeid
1
Anzali
AUTHOR
N.
Amir mozafari
2
Lahijan
AUTHOR
A.
Shojaei arani
3
Lahijan
AUTHOR
ORIGINAL_ARTICLE
Effect of synthetic juvenoid hormone (Pyriproxyfen) on the larval stages and survival rates of fresh water prown (Macrobrachium rosenbergii)
We Collected 75 samples from fish meal factories in Guilan Province (codes: 1,2,3,4,5,6,7) based on two times per month during June to December 2001. Standard reference are used in bacterial and fungous identification. The isolated bacteria are E. coli Proteus spp., Citrobacter spp., Shigella spp., Enterobacter Aerogenes Salmonella spp., Klebsiella spp., Hafina Alvei Yersinia Enterocolitica, Edwardsiella spp., Staphylococcus spp., Bacillus spp., Pseudomonas spp., Clostridium spp., Aeromonas Hydrophila Streptococcus spp. The highest and lowest bacterial contamination observed in E. coli and Hafina Alvei respectively. The most important isolated fungi were Aspergillus spp., Penicillium spp., Yeasts Rhizopus spp. The maximum and minimum fungi decay in samples were Penicillium spp., and Rhizopus respectively. The most and the least microbial spoilage have been seen in factories 1 and 2 respectively.
https://isfj.areeo.ac.ir/article_113880_01aecb820bd2ae05e250f2a5ac9ab285.pdf
2005-11-22
139
150
10.22092/isfj.2005.113880
Fish meal
Kilka
Spolige
Bacteria
fungi
Guilan province
Iran
F.
Ghasemzadeh
fghasemzd@yahoo.ir
1
Mashhad
AUTHOR
A.
Moghimi
2
Mashhad
AUTHOR
A.
Lotfi
3
Mashhad
AUTHOR
ORIGINAL_ARTICLE
Comparison of genetic variation of Ship sturgeon (Acipenser nudiventris) in the southern Caspian Sea and Ural River using PCR-RFLP
Genetic variation of ship sturgeon (Acipenser nudiventris) from the Caspian Sea was investigated using NADH5/6 gene and PCR-RFLP analysis. A total of 80 specimens of the fish were collected from the south Caspian Sea and the Ural River from Kazakhstan. mtDNA ND5/6 gene was amplified by polymerase chain reaction (PCR) digested using 39 Endonucleases Restriction Enzyme. Of the 39 enzymes, five showed polymorphism. Totally, ten composite haplotypes among 80 specimens were detected. Haplotype AAAAA showed maximum frequency (57.5%) whereas haplotypes BBAAA and BABAA showed minimum frequency (1.2%). Haplotype AAAAB was recognized specifically in Ural River specimens. Average haplotype and nucleotide diversity was 0.8516 and 0.007 respectively. Compared to other sturgeon species living in the Caspian Sea, nucleotide diversity of Ship Sturgeon was much lower (0.007). This may be due to smaller population size of this species. Monte-Carol simulation using 1000 interaction did not show any sig.....
https://isfj.areeo.ac.ir/article_113889_58ae9355f163499d8b1942686a51b3f8.pdf
2005-11-22
151
164
10.22092/isfj.2005.113889
A.
Ghasemi
1
Rasth
AUTHOR
M.
Porkazemi
pourkazemi@sturgeon.ir
2
Rasht
AUTHOR
M.
Kalbasi
kalbassi_m@modares.ac.ir
3
Noor
AUTHOR
ORIGINAL_ARTICLE
Determination of the best feeding ratio in Huso huso meat production cultured in fiber glass tanks
A two-phase random growth test was conducted to evaluate the effects of feeding rate on growth performance, food conversion ratio (FCR), specific growth rate (SGR), feeding efficiency and price index of reared Huso huso fingerlings in fiberglass tanks (2x2x0.53 cm). Rearing conditions such as diet, dissolved oxygen, light, water flow, fish density and feeding frequency were kept similar for the tanks. In the first phase, 180 fingerlings with a mean weight 867.86±17.42g were fed for 100 days in four treatments and three replications at feeding rates 1, 2, 3 and 4 percent of their biomass. In the second phase, also four treatments and three replications were applied to 84 Huso huso with a mean weight 2096.1±35.6g. In this phase, the fish were fed for 125 days with 0.75, I .5, 2.5 and 3 percent of their biomass. During rearing period, water temperature was 25.52±1.78 and 14.82±0.48 degrees centigrade and dissolved oxygen was 7.6±0.3 and 7.89±0.18 mg/lit, for the two phases respectively. T.....
https://isfj.areeo.ac.ir/article_113890_680df20594ae0ed4ef21f21aa028f83f.pdf
2005-11-22
165
180
10.22092/isfj.2005.113890
M.
Mohseni
mahmoudmohseni@yahoo.com
1
Rasht
AUTHOR
M.
Bahmani
mahmoudbahmani@ymail.com
2
Rasth
AUTHOR
M.
Porkazemi
pourkazemi@sturgeon.ir
3
Rasht
AUTHOR
H.
Porali
4
Rasht
AUTHOR
A.
Arshad
5
Rasht
AUTHOR
ORIGINAL_ARTICLE
An investigation on artificial reproduction of Mugil cephalus
Cultured nine years old breeder M. cephalus specimens were subjected to eight artificial breeding treatments from December till February 2003. In treatments 1-5, breeders received two injections of CPH and LIIRFI—A2 coupled with Domperidone or a mixture of CPH and HCG in an interval of 24 hours. Female breeders in treatments 6-8 received a gradual daily injection of 500 1U HCG per kilogram of body weight for 5 days. Male breeders in treatments 6-8 were given 5-10mg of MT-a-17 in addition to HCG and then subjected to two injections similar to that of treatments 1-5. Results showed that male breeders in stages +2 and +3 of all treatments that had received HCG produced more milt than those injected with MT-a-17, such that each male was used 2-6 times for milting purposes. Of 27 female breeders, 22 spawned 1-2.6 million eggs among which eight females' eggs were fertilized 10-95%. Hatching rate was between 0.008 to 88.9% and a maximum of 2 million larvae were produced. The best time for art.....
https://isfj.areeo.ac.ir/article_113891_7cd3bbad31d8b77a0816e7d1548fbc20.pdf
2005-11-22
181
196
10.22092/isfj.2005.113891
A.
Mirhashemi rostami
rostamy_a@yahoo.com
1
Gorgan
AUTHOR
K.
Amini
kourosh_a_ca@yahoo.com
2
Gorgan
AUTHOR
M.
Jorjani
3
Gorgan
AUTHOR
H.
Gholi ghezel
4
Gorgan
AUTHOR
A.
Shafeei
5
Gorgan
AUTHOR
ORIGINAL_ARTICLE
The effects of Glycerinate Hypophysis injection on the fluctuation of steroid hormones on Persian sturgeon (Acipenser persicus)
Using glycerin as a solvent of hypophysis powder for inducing ovulation in Acipencer persicus was studied at Shahid Beheshti Sturgeon Fish Reproduction Complex and Internatinal Sturgeon Research Institue. The experiment was done using four treatments in five replications. In treatment one, the female fish were injected with glycerin, whereas in treatment two, physiologic serum was used for injection. The females in treatment three were given two injections of glycerin, while those of the treatment four received two injections of physiologic serum. The evaluated factors in the blood serum included 17- 13 estradiol and 17-a hydroxy progesterone. The biometry factors were measured as well. The fish in treatment one showed higher frequency of fertilization, more concentration of estradiol and progesterone hormones compared to other treatments, although insignificantly. Treatment with one injection of physiologic serum caused the lowest amount of these factors. The fluidity of ovules in the.....
https://isfj.areeo.ac.ir/article_113894_317ae67d511ff9965e898ece4fb05bd7.pdf
2005-11-22
197
214
10.22092/isfj.2005.113894
M.
Norozi
nmehrnoosh@yahoo.com
1
Tonekabon
AUTHOR
Sh.
Oryan
sh_oryan@yahoo.com
2
tehran
AUTHOR
M.
Bahmani
mahmoudbahmani@ymail.com
3
Rasht
AUTHOR
ORIGINAL_ARTICLE
Frequency distribution of Penaeus semisulcatus and Penaeus merguiensis in the catch of breeder shrimp trawlers in Jask and Sirik area, Oman Sea
تامین میگوهای مولد مورد نیاز کارگاههای تکثیر عمدتا از نواحی شرقی جاسک (صیدگاههای جگین تا گوگسر) و حوضه مرکزی جاسک (صیدگاههای خلیج جاسک، تبرکن و مزاری) میباشد. گسترش تدریجی استخرهای پرورشی در استانهای ساحلی جنوب باعث گردید که جهت رفع نیاز به مولد میگو، صیدگاههای دیگری واقع در منطقه سیریک (خورآذینی، توجک و بونجی) مورد شناسایی و بهره برداری قرار گیرد.صید مولدین بطور عمده طی ماههای فروردین تا پایان تیرماه هر سال توسط شناورهای سنتی مجهز به تور ترال و تحت نظارت شیلات صورت می پذیرد. پروژه بررسی وضعیت صید شناورهای مولدگیر طی سالهای 1380 تا 1381 به منظور شناسایی گونه های مختلف میگو و تعیین میزان درصد هر یک از آنها در صید و تعیین درصد مراحل باروری در صیدگاههای جاسک و سیریک به مرحله اجرا درآمد. گزارش حاضر در برگیرنده تعیین وضعیت صید دو گونه میگوی ببری سبز و موزی در کل صید می باشد.با توجه به اینکه هدف صید میگوی سفید هندی بوده است و از طرف دیگر پراکنش گونه فوق در ناحیه شرقی استان هرمزگان می باشد، بنابراین محدوده فعالیت شناورهای سنتی میگوگیر به سه منطقه تقسیم گردید.
https://isfj.areeo.ac.ir/article_113895_5f8baf9ba4f2e13bd41ce381fcd0d1f2.pdf
2005-11-22
215
222
10.22092/isfj.2005.113895
Gh.
Zarshenas
zarshenas1@yahoo.com
1
tehran
AUTHOR
Sh.
Ghasemi
shahghasemip@gmail.com
2
tehran
AUTHOR