Study of the effect of environmental electromagnetic waves on reproductive performance of Angel fish (Pterophyllum scalare) in Zanjan
Many uses of modern technologies in the environment, even in the aquatic ecosystem has caused fishes to be affected by its margins including the effects of electromagnetic waves emitted by them, in addition to humans. Therefore, the survey of effects of these waves on fish as the most important inhabitants of aquatic environments is necessary with economic The present study was designed to reduce the dramatic decline in the production of ornamental fish, in particular the Angel fish in Zanjan province, and the research application of the provincial fisheries department to investigate the effects of environmental electromagnetic waves as one of the important alternatives to reduce the proliferation of Angel fish. The aim of this study was to investigate the effect of mobile electromagnetic waves (900 MHz) on GSI, HIS, GTH II hormones level and ovarian tissue structure of angel fish, Pterophyllum scalare, female and male brooders during 10 days and in 3 experimental groups including: control (without receiving Waves), treatment 1( 4 times a day and each time for 30 minutes in faced with mobile phones in a standby position) and treatment 2 (4 times a day and each time for 30 minutes in faced with mobile phones in a calling mode). At the end of the test, GTH II was measured by radio immunoassay (RIA) after blood sampling, centrifugation and serum separation. The brooders were then biometrically analyzed and dissected. The ovarian sections were prepared by the classical method of histology with hematoxylin-eosin staining, and microscopically evaluation was done for quantitative and qualitative examination. The GSI, HSI and the mean level of GTH II in treatment group 2 was significantly higher than control group and treatment 1. No brooders of treatment 2 spawned. The number of atresia in treatment 2 was higher than that of other groups. In the males, GSI was lower in treatments 1 and 2 than control group. However, The HSI of control group was less than treatments 1 and 2. The mean GTH II level in male breeders of treatment 1 and 2 was significantly higher than those in control group. Also, abnormality and extensive destruction in the sections of the spermatozoa tubes of testis tissue were present in treatment 1 and 2. The results show that electromagnetic waves of mobile phones affect the reproductive indices of male and female angel fish and reduce the reproductive capacity of both sexes. It is therefore advisable to observe the principle of the proliferation of angel fish (including the selection of healthy breeders, providing a place in the aquarium to hang eggs to it, using water at a maximum of 10 dGH and pH between 6 and 7 and providing a temperature of 29 Up to 30 ° C for spawning induction), it should be avoid to use of electromagnetic devises, especially mobile phones, in the fish breeding farm and they should be establish even as far away as possible from BTS.
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Report biblioteca |
| Language: | Persian |
| Published: |
Iranian Fisheries Science Research Institute
2018
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| Subjects: | Electromagnetic waves, Reproduction, Angel fish, Pterophyllum scalare, |
| Online Access: | http://hdl.handle.net/1834/14130 |
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| Summary: | Many uses of modern technologies in the environment, even in the aquatic ecosystem has caused fishes to be
affected by its margins including the effects of electromagnetic waves emitted by them, in addition to humans.
Therefore, the survey of effects of these waves on fish as the most important inhabitants of aquatic environments
is necessary with economic The present study was designed to reduce the dramatic decline in the production of
ornamental fish, in particular the Angel fish in Zanjan province, and the research application of the provincial
fisheries department to investigate the effects of environmental electromagnetic waves as one of the important
alternatives to reduce the proliferation of Angel fish. The aim of this study was to investigate the effect of mobile
electromagnetic waves (900 MHz) on GSI, HIS, GTH II hormones level and ovarian tissue structure of angel
fish, Pterophyllum scalare, female and male brooders during 10 days and in 3 experimental groups including:
control (without receiving Waves), treatment 1( 4 times a day and each time for 30 minutes in faced with mobile
phones in a standby position) and treatment 2 (4 times a day and each time for 30 minutes in faced with mobile
phones in a calling mode). At the end of the test, GTH II was measured by radio immunoassay (RIA) after blood
sampling, centrifugation and serum separation. The brooders were then biometrically analyzed and dissected.
The ovarian sections were prepared by the classical method of histology with hematoxylin-eosin staining, and
microscopically evaluation was done for quantitative and qualitative examination. The GSI, HSI and the mean
level of GTH II in treatment group 2 was significantly higher than control group and treatment 1. No brooders of
treatment 2 spawned. The number of atresia in treatment 2 was higher than that of other groups. In the males,
GSI was lower in treatments 1 and 2 than control group. However, The HSI of control group was less than
treatments 1 and 2. The mean GTH II level in male breeders of treatment 1 and 2 was significantly higher than
those in control group. Also, abnormality and extensive destruction in the sections of the spermatozoa tubes of
testis tissue were present in treatment 1 and 2. The results show that electromagnetic waves of mobile phones
affect the reproductive indices of male and female angel fish and reduce the reproductive capacity of both sexes.
It is therefore advisable to observe the principle of the proliferation of angel fish (including the selection of
healthy breeders, providing a place in the aquarium to hang eggs to it, using water at a maximum of 10 dGH and
pH between 6 and 7 and providing a temperature of 29 Up to 30 ° C for spawning induction), it should be avoid
to use of electromagnetic devises, especially mobile phones, in the fish breeding farm and they should be
establish even as far away as possible from BTS. |
|---|