ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles  (5)
  • Biology  (5)
  • 1
    facet.materialart.
    Unknown
    Imprinting of white fish (Rutilus frisii kutum) with morpholine (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25233 | 18721 | 2018-09-06 06:08:51 | 25233 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: During last two decades 200 million of kutum fingerlings were released into the Caspian Sea Rivers annually. Morpholine as retrieving agent were used by many researchers for homing of fishes. To understand the effects of morpholine on fisheries return of kutum fishes a project with use of tagging method was approved in2004 and its first phase started in 2005. Brooders were selected from Khoshkrud River and breeding were done in shahid ansari hatchery, Rasht. Totally 15930 fishes were subjected for this study. 5480 fingerlings (4-5g.) were used for determining the dose effects of morpholine (3 treatments 5x10^*-2, 5x10^*-5 , 5x10^*-7 mg/lit) in return rate and homing of fishes. Results revealed that there were significant differences between kutum return rate exposed with 5x10^*-5 mg/lit (0.62 %) with other treatments i.e. : 5x10^*-7 ، (0.15%) and 5x10^*-2 (0.37%) during the experimented period(P〈0.001). To determine the critical period for imprinting of morpholine 10450 kutum fishes were exposed to 5x10^*-5 mg/lit of morpholine in different growth stages(yolk sac fry ,active fry, 2-3-g. fingerlings , 4-5 g. fingerling ).Results showed significant difference between kutum return rate in active fry stage(1 %) compare to other stages i.e. , yolk sac fry (0.23%) , 2-3- g. fingerling(0.23%) , 4-5 g. fingerling (0.26%) and control(0.13) during the tree years of experiment(P〈0.001). There were significant difference in sex ratio [M(1.42): F(1)] in recaptured kutums in khoshkrud river (x_2=6.4 α= 0.05 df= 1).Recapturing rate were 6.7 % compare to recapture rate during last 5 year(5%) revealed that morpholine can be used for return rate enhancing of kutum.
    Keywords: Biology ; Iran ; Caspian Sea ; Kutum ; Tagging ; Return rate ; Morpholine ; Rutilus frisii kutum ; Fingerlings ; Imprinting
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 80
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Evaluation of nitrogenous compounds, microbial changes and electrophoresis pattern during fermentation of Mahyaveh, the Iranian traditional fish sauce (2021)
    In:  http://aquaticcommons.org/id/eprint/21971 | 18721 | 2018-01-19 10:59:25 | 21971 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-05
    Description: Mahyaveh, the Iranian traditional fish sauce is a product with distinct flavor that is produced by fermentation of small and underutilized fish species in the presence of high salt concentration. Fish sauce is mainly used as food flavoring and seasoning in the southern provinces of Iran such as Hormozgan and Fars. In this research, the process of Mahyaveh preparation from the Persian Gulf anchovies was performed in the lab. Fish sauce was prepared by incubating mixtures of anchovies and saturate brine in the pottery containers at 37 C during 54 days of fermentation. The total changes in bacterial count and nitrogenous compounds were investigated in all of six stages of fermentation. The results showed that the total nitrogenous compounds including formaldehyde nitrogen, amino acid and volatile nitrogen increased sharply during the periods of fermentation but trimethylamine contents dramatically reduced in the final stage after increasing moderately in the early stages of fermentation. High Pearson correlation (r=0.8) between total bacterial count and trimethylamine confirmed the existence of relationship between these variables in the process of fish sauce fermentation. The results of SDS-PAGE pattern showed that the number and intensity of protein bands were reduced during fermentation time.
    Keywords: Biology ; Fisheries ; Mahyaveh ; Fish sauce ; Nitrogenous compounds ; Total aerobic bacterial count ; SDS-PAGE ; Evaluation ; microbial ; electrophoresis ; Iranian traditional ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 147-162
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Composition and functional properties of isolated protein from Myctophid (Benthosema pterotum) using pH shift method (2021)
    In:  http://aquaticcommons.org/id/eprint/22036 | 18721 | 2018-01-25 07:57:25 | 22036 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-06
    Description: This study investigated the composition and functional properties of isolated fish protein from Lanternfish (Benthosema pterotum). The proteins were isolated by using pH shift method. Basic pHs (10 and 12) were used to produce fish protein isolate. Fat contents of samples revealed that alkaline had a significant effect on reduction of fat in fish protein isolate. The lipid content decreased significantly by increasing the pH. Furthermore, the results showed that the functional properties including water holding capacity, oil holding capacity, emulsifying capacity, foaming and solubility were improved with increasing the pH and the fish protein produced at pH 12 had higher functional properties than the protein isolated at pH 10. Investigation and comparison of the color characteristics (L, a and b) attributed to the samples demonstrated that fish protein isolated at pH 12 was lighter (higher L) than that isolated at pH 10. In addition, redness (a) and yellowness (b) of protein isolates declined with increasing the pH. As a result, fish protein isolate from Lanternfish produced using alkaline pH showed appropriate functional properties and alkaline led to improvement of the functionality and color characteristics of the protein isolate.
    Keywords: Biology ; Fisheries ; Lantern fish ; Benthosema pterotum ; Fish protein isolate ; Alkaline ; pH ; Functional Properties ; Composition ; protein ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 25-36
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    Comparative study on some physiologic, biometrics, nutritional value and molecular characteristics of Mighan Lake’s Artemia (Arak) (2021)
    In:  http://aquaticcommons.org/id/eprint/22070 | 18721 | 2018-02-01 09:11:05 | 22070 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-07
    Description: Due to the importance of identifying the major characteristics of Artemia populations, in this study some physiologic, biometric, nutritional and genetic characteristics of one Artemia population from Iran named Arak’s Artemia (Mighan Lake) was studied. The hatched larvae of Artemia were reared in the saline water of 80 g/l with standards method in which percentage of survival and growth were evaluated on days 3, 7, 11 and 15 of culture period. In order to study the morphometric characteristics of Artemia, diameter of full cysts as well as 11 more morphological parameters of adult Artemia were measured. The fatty acid profile was analyzed by gas chromatography. The Genetic characteristics were compared with other Artemia populations by sequencing after PCR amplification of Hsp 26 gene. According to the results, the diameter of cysts and nauplii instar were 276.28 and 544.66 micron, respectively. The growth and survival of brine shrimp Artemia, in comparison with other populations, reflected good growth and survival of this population. The results of fatty acids profile also showed higher amounts of polyunsaturated fatty acids in this Artemia compared to other populations cultured under identical conditions. The morphometric characteristics and genetic study of Hsp 26 gene showed great affinity of this population with the parthenogenetic brine shrimp Artemia. However, individual differences could be used to characterize this population.
    Keywords: Biology ; Chemistry ; Artemia ; Morphometry ; Survival ; Mighan Lake ; Artemia Phylogeny ; biometrics ; molecular ; Arak ; growth ; survival ; population ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 93-106
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 5
    facet.materialart.
    Unknown
    Effects of short-term starvation on biochemical carcass composition, liver glycogen and fat in silver seabream fingerlings, Sparidentex hasta (2021)
    In:  http://aquaticcommons.org/id/eprint/24903 | 18721 | 2018-11-20 12:31:42 | 24903 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Both in nature and in aquaculture, fishes coulde xperience periods of food deprivation or starvation. The present study was investigated the effect of starvation on biochemical body composition, glycogen and fat of liver in Sobaity fingerling. In this study, 300 fingerlings of Sparidentex hasta studied with mean weight 28.47±0.24 g that included four treatments each with three replicates (25 fish per replicate) in a 300-liter polyethylene tanks. Fish of control treatment were fed to saturation twice daily and other treatments of were starved 2, 4 and 8 days. Biochemical composition of liver and carcass were performed at the beginning and end of the period of starvation and samples were transported to the laboratory for analysis. The results of this study showed that 2 days of food deprivation did not affect any of the factors studied (P〉0.05), also 4 days of food deprivation was significantly affected on liver glycogen only (P〈0.05), but 8 days of food deprivation was significantly effected on liver glycogen, fat and protein of body composition (P〈0.05). According to the results of this study it can be stated that; in Sobaity fish, the first priority was the use of liver glycogen stores in food deprivation times; this shows the key role of the liver as the provider of fish body's energy needs, and the next priority was the use of fat and protein stores.
    Keywords: Biology ; Food deprivation ; Biochemical carcass composition ; Liver glycogen ; Liver fat ; Sparidentex hasta ; Fingerlings ; Silver seabream ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 60-70
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...