Recursos de colección

Aquatic Commons (37.694 recursos)

The Aquatic Commons is a thematic digital repository covering the natural marine, estuarine /brackish and fresh water environments . It includes all aspects of the science, technology, management and conservation of these environments, their organisms and resources, and the economic, sociological and legal aspects.

Subject = Fisheries

Mostrando recursos 1 - 20 de 86

  1. Amino acid and fatty acid profiles of materials recovered from Prussian carp, Carassius gibelio (Bloch, 1782), using acidic and basic solubilization/ precipitation technique

    Saffar Shargh, A.; Zakipour Rahimabadi, E.; Alizadeh, E.; Gheybi, F.
    Isoelectric solubilization /precipitation (ISP) process was used to isolate protein from muscles of Prussian carp,Carassius gibelio (Bloch, 1782). Fish protein and lipid were recovered from whole gutted Prussian carp using acidic and basic isoelectric solubilization/precipitation followed by assaying amino acid and fatty acid profile. Essential amino acids content in acidic and basic pH treatment of ISP of Prussian carp were 216.6 and 218.7 mg.g-1,respectively. Results showed that identified amino acids in Prussian carp protein isolated by ISP method, could meet all needs of adults, but a supplementary protein must be used for children. Limiting amino acids in both acidic and...

  2. Effect of human chorionic gonadotropin on sexual maturation, sex steroids and thyroid hormone levels in Caspian lamprey (Caspiomyzon wagneri Kessler, 1870)

    Abedi, M.; Mojazi Amiri, B.; Abdoli, A.; Javanshir, A.; Benam, S.; Namdarian, A.
    The objective of this study was to determine the effect of human chorionic gonadotropin (hCG) on sexual maturation, plasma sex steroids [17β-estradiol, (E2) and 17α-hydroxy progesterone (17α_OHP)] and thyroid hormones (triiodothyronine, T3 and thyroxin, T4) levels in upstream - migrating Caspian lamprey. During the experiment, 36 fish (24 females and 12 males) in spring 2013 and 36 fish (24 females and 12 males) in fall 2013 were collected from the Shirud River estuary in Mazandaran Province, the Southern Caspian Sea during their upstream migration to the freshwater. All fish were injected with hCG at the doses of 1000, 1500 and...

  3. Effect of age on reproductive performance of Kutum, Rutilus frisii (Nordmann, 1840) in Shirood River, the southern coast of the Caspian Sea

    Bavand Savadkouhi, E.; Khara, H.
    In this study, we investigated the age-dependent changes in reproductive efficiency of Kutum, Rutilus frisii caught from Shirood River, the Southern Caspian Sea (Mazandaran Province, Iran). Age-dependent reproductive performance of brooders was assayed on two age and sex groups. Results revealed that there were no significant differences in sperm characteristics between age groups. All female characteristics revealed change except relative fecundity between two age groups. The higher fertilization rate (87%) and also survival rate (91%) were found when the 4 year-old males were crossed with 4 year - old females (P < 0.05). Our results confirmed the agedependent changes of...

  4. Life history traits and gonad histology of an endemic cyprinid fish, Mond spotted barb, Capoeta mandica from Southern Iran

    Esmaeili, H.R.; Choobineh, R.; Zareian, H.; Gholamhosseini, A.
    The life history traits and gonad development of an endemic cyprinid fish, the spotted barb, Capoeta mandica (Bianco & Banarescu 1982), from southern Iran was investigated by regular monthly collections from February 2006 through January 2007 and on the basis of microscopic and macroscopic analyses. No information on the spawning characteristics of the fish are available to date. A total of 335 specimens were captured using electrofishing including 253 males and 102 females, resulting in 2.5:1 (male: female) sex ratio, which is significantly different from the expected ratio. The commonly known five standard maturation stages were determined based on the...

  5. Stock assessment of juvenile sturgeons in the Iranian water of the Caspian Sea by bottom trawl survey

    Tavakoli, M.; Behrooz Khoshghalb, M.R.; Kor, D.; Ghadirnejad, H.
    The sturgeon stock assessment was performed to aim at estimation of absolute and relative abundance and determination of species composition at lower 10 m depths using the Si-Sara2 RV vessel in the Iranian coasts of the Caspian Sea in Guilan, Mazandaran and Golestan provinces during 6-30 September 2011-2012. In this study, 40 stations were selected on the basis of stratified random sampling design and then the stock estimation was performed using the swept area method. The study was carried out using bottom trawling with 9 m head rope. The time and speed of trawling in each station were 30 minutes...

  6. Reproductive biology of Mossul bleak (Alburnus mossulensis) in Bibi-Sayyedan River of Tigris basin in Iran

    Keivany, Y.; Ghorbani, M.; Paykan-Heyrati, F.
    Reproductive characteristics of Mossul bleak, Alburnus mossulensis, a native species of Cyprinidae family in Bibi-Sayyedan River of Semirom, Isfahan, were investigated by monthly sampling during December 2010 to December 2011. Five hundred and fourty three specimens (256 females, 159 males and 31 immature) were caught by a sein net (5 mm mesh size). The collected sampeles were anesthesized in 1% clove oil solution and transported to the laboratory on ice and subjected to dissection and biometric measurments. Age of males and females ranged from 0+ to 5+ years. The sex ratio was 1M: 2.2F (p < 0.05). The females outnumbered...

  7. Effects of cadmium on morphological structure of sperm in Caspiomyzon wagneri (Kessler, 1870) (Petromyzontiformes : Petromyzontidae)

    Eagderi, S.; Mojazi Amiri, B.; Poorbagher, H.; Nasrollah Pourmoghadam, M.; Nemati Mobin, N.
    The present study aimed to investigate effects of the heavy metal Cd on the sperm morphological indices of Caspimyzon wagneri. The sperm were exposed to 0.01, 0.1, 1, 10, 100 and 1000 mg.L-1 Cd for three minutes, three and 36 hours. The sperms exposed to Cd showed an increase in the length, width and surface of the head, flagella degradation and slightly flagella breakage. With increase of Cd concentration or the exposure duration, the damages found in sperms increased. But when exposure to contaminant exceeds than certain period of time,damage effects caused changes in the sperm structure as head length...

  8. Variations in fish body and scale shape among Aphanius dispar (Cyprinodontidae) populations: insights from a geometric morphometric analysis

    Khosravi, A.; Shaker Golmakan, M.; Teimori, A.
    Phenotypic variations in fish body and scale shape were investigated among the three populations of Aphanius dispar (Rüppell, 1829) in Southern Iran through the use of landmark-based geometric morphometric analyses.This species is widely distributed in the region, and therefore, considerable morphological variations exist among the geographically allopatric populations. Based on the Principle Component Analysis (PCA), variation in body shape of the females is prominently related to the dorsal fin region, while in the males it is related to the dorsal fin and caudal peduncle. Moreover, the shape variations in the scales are obviously linked to the tip of anterior portion...

  9. Changes in biochemical and physiological responses of common carp, Cyprinus carpio L. after long-term exposure to Pb (II)

    Heidary, S.; Hajimoradloo, A.; Bani, A.; Aghamaali, M.; Ghorbani, R.
    In this study, the chronic toxic effects of Pb (II) on common carp, Cyprius carpio were investigated using several biomarkers at different levels of biological functions for assessing changes in ecosystem quality. In a bioassay,common carp juveniles were individually exposed to different dose of heavy metal, Pb II (0, 0.45, 0.89, 1.34 mg.l-1) for 28 days. Morphological indices such as hepatosomatic index, condition factor and lipid peroxidation (LPO) level and also the activities of superoxide dismutase (SOD) and catalase (CAT) were measured. These results indicated that there was significant lower condition factor in fish exposed to the highest concentration of...

  10. Evaluation of electronarcosis and clove oil for short-term anesthesia in common carp, Cyprinus carpio L. 1758

    Monsef Rad, S.F.; Paighambari, S.Y.; Haji Moradlou, A.; Mashayekhi, F.; Qorbani, R.
    Anesthesia is considered to be the best way to ensure animal welfare during handling etc. Clove oil and electronarcosis are among the most popular chemical and physical anesthetics used in fisheries and biology;however there is a little information available on the effect of anesthesia using direct electric current in fish. In the present study, the impacts of clove oil (30 mg.l-1) and electro-anesthesia (constant direct current, 0.5 (DC) were assessed in common carp, Cyprinus carpio during narcotic stage in two experimental sets. Experiment 1 was conducted to quantitatively compare induction of anesthesia and recovery time. The biochemical and hematological...

  11. Spermatological parameters of wild and cultured beluga (Huso huso Linnaeus, 1758) and their effects on fertilization rate, hatching rate, larval growth and survival rates

    Madadi, Z.; Khara, H.
    To compare the reproductive performance of the wild and cultured stocks of beluga, Huso huso males, some spermatological parameters were measured including: sperm motility, sperm density, spermatocrit and also fertilization rate, hatching rate and larval growth and survival rates. The semen samples were sampled from 11 wild spawners and 12 cultured brooders. A half of each semen sample was allocated for spermatological analysis and remaining were used for artificial propagation. In wild beluga, sperm motility time was 339.09 ± 23.11 s; spermatozoa motility rate 83.64 ± 2.01%; sperm density 15.22 ± 3.46 ×109 and spermatocrit 5.88 ± 1.36% while in...

  12. Fatty acid composition of fresh and smoked Black and Caspian Sea sprat, Clupeonella cultriventris (Nordmann, 1840) treated with different salt composition

    Zakipour Rahimabadi, E.; Faralizadeh, S.; Khanipour, A.A.
    The effect of salting by different salt composition on fatty acid profile studied in hot smoked Black and Caspian Sea sprat, Clupeonella cultriventris. After initial prepare activities, samples were exposed to brining process within two salt concentrations including of 100 % NaCl (treatment 1 or T1) and 75 % NaCl- 25 % KCl (treatment 2 or T2) under 15% brine solution for 3 hrs. The smoking process included turning the samples into drying and hot smokes by slow and high rates of smoking machine (Atmoos) set and packaged. Fatty acid profiles of treated samples were compared with fresh fish samples...

  13. Bioaccumulation of copper nanoparticle in gill, liver, intestine and muscle of Siberian sturgeon (Acipenser baerii) juvenile

    Bagherzadeh Lakani, F.; Meshkini, S.; Yazdani Sadati, M.A.; Falahatkar, B.
    Copper (Cu) is an essential element required by all living organisms, since at least 30 enzymes are known to use Cu as a cofactor. Cu is also toxic in excess and liver and gills are known to be target organs for it. In the present study, 240 Siberian sturgeon juvenile (with initial weight 29.2 ± 3.1 g and initial length 21.8 ± 1.4 cm) were randomly distributed in 12 fiberglass tanks at 4 different copper nanoparticle (Cu-NPs) treatments with 3 replicates. Treatments included control (T0 = no added Cu-NPs), 50 (T50), 100 (T100), 200 (T200) µg.l -1 Cu-NPs (mean primary...

  14. Karyotype analysis of chub, Squalius cephalus (Linnaeus, 1758) (Teleostei: Cyprinidae) from Karasu River, Erzurum, Turkey

    Kilic, D.; Sisman, T.
    The karyotypic characteristics of chub, Squalius cephalus have been investigated by examining metaphase chromosomes spreads obtained from gill and kidney tissues. The fish used in the study were caught with fishing nets from Dumlu Stream, one of the main tributaries of the Karasu River. The live fish were transported to the laboratory, kept in a well aerated aquarium before analysis and then were injected intraperitoneally with doses of phytohemagglutinin, 0.01 ml.g-1 BW of 1% solution with 48-h interval to induce cell divisions. At the end of the period, the fish were injected intraperitoneally with doses of colchicine (0.01 ml.g-1 BW...

  15. Primary culture of ovarian follicular cells of Sterlet, Acipenser ruthenus to develop an in vitro system

    Nowruzfashkhami, M.R.; Sudagar, M.; Bahmani, M.; Salamat, N.; Mazandrani, M.; Yazdani Sadati, M.A.
    The aim of the present study was to develop an in vitro system for functional investigation of ovarian follicular cells in Sterlet, Acipenser ruthenus. Oocytes for the primary culture were obtained from the ovaries of a 6 years old Sterlet 729 g in weight and 47 cm in total length. The oocytes were in advanced vitellogenesis stage (PI >10). A part of the ovary (containing about 300 follicles) was removed, ovarian follicles isolated by manually removing those from the interstitial tissue and washed with sterile phosphate buffered saline (PBS) containing antibiotics and Amphotericin B. Follicular cells were separated by treating...

  16. Habitat suitability index of Barbus cyri (Heckel, 1843) in Tootkabon River, the South Caspian Sea basin, Iran

    Asadi, H.; Sattari, M.; Eagderi, S.
    Knowledge of habitat requirements of aquatic animals plays an important role in fisheries and protection programs of aquatic ecosystems. Hence, this study was conducted to investigate the suitability indexes of habitat use and habitat suitability index (HSI) of Barbus cyri in its distribution range in Tootkabon River. A number of environmental variables, including elevation, water depth, river width, river slope, velocity, substrate type, and average diameter of bed stone, riparian vegetation type and the relative abundance of B. cyri at 13 stations and three replications from the downstream to upstream were examined during November 2013. The results showed that B....

  17. Determination of heavy metal content in commercial marine fish hunted from southeast Aegean Sea (Turkey) and their potential risk for public health

    Yabanli, M.; Alparslan, Y.; Hasanhocaoglu Yapici, H.; Yapici, S.; Yozukmaz, A.
    In this study, heavy metals such as Al, Cr, Cu, Zn, Cd, Hg, Pb etc. content in liver, muscle and gill of three economical marine species [striped seabream (Lithognathus mormyrus Linneaus, 1758), two-band bream (Diplodus vulgaris Geoffroy Saint-Hilaire, 1817) and Common pandora (Pagellus erythrinus Linneaus, 1758)] obtained from 4 stations (Fethiye, Bodrum, Datça, Marmaris) in South Aegean coast were analyzed. After tissues were mineralized with wet-ashing, their heavy metal concentrations were measured with inductively coupled plasma mass spectrometry (ICP-MS). According to the findings, sediment samples had more heavy metals than water samples and none of heavy metal concentrations in the...

  18. First record of Limnodrilus claparedeianus ratzel, 1868 (Annelida: Oligochaeta: tubificidae) from Anzali wetland, Guilan Province, Iran

    Nazarhaghighi, F.; Mousavi Nadoushan, R.; Shabanipour, N.; Fatemi, M.R.; Mashinchian Moradi, A.
    Oligochaeta worms are important organisms in aquatic ecosystem. Their omnipresence makes them as an indicator of environmental changes and health of aquatic ecosystem. The members of the family Tubificidae and in particular, genus Limnodrilus are considered as the most tolerant oligochaets to aquatic pollution. Therefore identification and biological characteristics of this taxon are of great help to evaluate the ecosystem of water bodies. Limnodrilus claparedeianus were collected from Anzali Wetland with a grab of 0.04 m2 capacity at 13 stations from August 2012 through June 2013. Penis sheath was one of the main characteristics to identify them. Results showed their...

  19. Fish assemblages as influenced by environmental factors in Taleghan River (the Caspian Sea basin, Alborz Province, Iran)

    Zamani Faradonbe, M.; Eagderi, S.
    The relationship between some habitat factors and fish assemblage was analyzed in the Taleghan River, Alborz Province, Iran. Fish specimens from thirty-three sites were sampled by electrofishing device in October 2014. The habitat parameters, including elevation (m), water depth (cm), river width (m), river slope (%), current velocity (m.s -1), number of large stone (> 15 cm), average stone diameter (cm), substrate index (SI%), level of potamal cover, level of periphyton cover, pH, electrical conductivity, total dissolved solid and temperature (°C) were measured in all sampling sites. Canonical correspondence analysis was performed to study the relationship between fish assemblage and...

  20. Review of the genus Alburnoides Jeitteles, 1861 (Actinopterygii, Cyprinidae) from Iran with description of three new species from the Caspian Sea and Kavir basins

    Mousavi-Sabet, H.; Vatandoust, S.; Doadrio, I.
    The genus Alburnoides Jeitteles, 1861 in Iran is reviewed, and diagnoses are presented for all eight recognized species. Alburnoides eichwaldii, A. holciki, A. idignensis, A. namaki, A. nicolausi, A. petrubanarescui, A. qanati and A. tabarestanensis are considered valid and three new species are described: Alburnoides coadi sp. n., from Namrud River in Kavir basin, A. parhami sp. n., from Atrak River in the south-eastern Caspian Sea basin, and A. samiii sp. n., from Sefidroud River in the southern Caspian Sea basin. All species, except unstudied A. petrubanarescui are illustrated and characterized morphologically.

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