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Journal Article

Journal article

From:
Iranian Society of Ichthyology

Early body shape changes of beluga sturgeon were studied using landmark-based geometric morphometric approach to recognize its allometric growth pattern. Sampling was done from hatching up to 50 days post hatching (DPH). Left side of specimens were photographed using digital camera and nine landmark points were digitized on two-dimensional images. Total length (TI) was measured using the softw ...

SUBJECT: body shape; acipenseridae; ontogeny; morphometrics; ontogeny

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

Journal article

From:
Iranian Society of Ichthyology

Common carp, Cyprinus carpio (L.) were blood-sampled after 0, 2, 6, 12, 24, 48 and 72 h fasting to find serum baseline levels. There was a significant difference in serum glucose, lactate, triglyceride and total protein but not cholesterol, albumin and calcium levels among the treatments. Glucose levels increased with fasting tine and reached to a peak after 6 h. Then, the glucose level decrea ...

SUBJECT: biochemistry, cyprinus carpio (l.), fasting, metabolite, sampling, feeding

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

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From:
Iranian Society of Ichthyology

Goldfish Carassius auratus were subjected to either formalin (250 ppm) or NaCl (10 ppt), over a 0.5-h period followed by 24-h freshwater exposure. Serum biochemistry was monitored before exposure (0), immediately after (0.5) plus 3 and 24 h after exposure. Results showed that both formalin and NaCl treatments caused rapid increase in cortisol with a peak at 3 h, which did not recover until 24 ...

SUBJECT: therapeutic, goldfish, stress, biochemistry

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

Journal article

From:
Iranian Society of Ichthyology

Common carp (Cyprinus carpio) population has been declined in the Caspian Sea in the recent years, mainly due to human manipulation. This valuable species needs to be protected in the Caspian Sea. Considering the commercial value of common carp, its rehabilitation program has been established. In the present study, 8 microsatellite loci were used to assess genetic variation and population stru ...

SUBJECT: population, gorganroud river, gomishan bay, microsatellite, genetic structure

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

Journal article

From:
Iranian Society of Ichthyology

Sulfuric acid treatment for Artemia cyst decapsulation

Seyyed Morteza Hoseini et al. [2013-04-05]

In the present study, sulfuric acid was used for Artemia cysts decapsulation. Cysts of Artemia franciscana were hatched out in regular manner or following hypochlorite or acid decapsulation. Two acid concentrations (1 and 5%), three acid immersion times (10, 30 and 50 min) were used and hatching rates were recorded after 15, 18 and 24 h incubation. Hatching rates increased but hatching time de ...

SUBJECT: decapsulation, artemia, sulfuric acid, hypochlorite solution

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

Journal article

From:
Iranian Society of Ichthyology

Concentration of heavy metals in aquatic ecosystems is considered as an important environmantal issue. In this study, the Namrood River located in Firoozkooh (Tehran province, Iran) was assessed for the existence of heavy metals. The Namrood river is situated by the main road being by pollutants from tourism and recreational centers, gas stations, sewage of villages, agricultural wastewater an ...

SUBJECT: warm season; copper; sediment; heavy metals, gammarus pluex , chironomidae , namrood river

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

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From:
Iranian Society of Ichthyology

Effect of different photoperiodic regimes was evaluated on growth performance and survival rate of the Beluga (Huso huso) prelarvae and larvae. Newly hatched prelarvae were stored in 5 round fiberglass 500‑L tank with different photoperiod (24L:00D, 18L:06D, 12L:12D, 06L:18 D, 00L:24D) till 50 days post hatch with three replicates. Light intensity was 200 lux during the experiment. Feeding was ...

SUBJECT: acipenseridae, beluga, photoperiod, morphometrics

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

Journal article

From:
Iranian Society of Ichthyology

Effect of dietary free L-Lysine on growth, food intake, and muscle composition of beluga juveniles were investigated over 6 weeks. Control diet lysine content was 2.1% of dry matter (4.4% of dietary protein). Three experimental diets were prepared by adding lysine (0.5, 1 and 1.5%) to control diet to obtain diets containing 2.6, 3.1 and 3.6% of dry matter lysine (corresponding to 5.5, 6.6 and ...

SUBJECT: l-lysine, huso, food intake, muscle composition

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

Journal article

From:
Iranian Society of Ichthyology

This study aimed to investigate the spawning season, length at first maturity (LM50) and sex ratio of Metapenaeus affinis in the shrimp fishing grounds of Hormozgan Province, west of the Persian Gulf, Iran. Samples were taken by the swept area method and Trawl net with 2 cm mesh size in the cod end from January 2010 to February 2011. Results showed that the sex ratio deviated from 1:1 and fema ...

SUBJECT: reproductive biology, metapenaeus affinrst maturity, persian gulfis, length at first maturity

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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Journal Article

Journal article

From:
Iranian Society of Ichthyology

Widespread use of nanosilver can be led the contamination of aquatic environment and impact on living organisms such as fishes. We investigated histopathological changes in the gills tissue of Caspian roach fingerlings after two weeks exposure to sublethal concentrations of nanosilver. Following one and two weeks exposure, necrosis, shortening of secondary lamellae, edema, destruction of epith ...

SUBJECT: aquatic ecosystem, fish, nanosilver, gill histopathology; tissue

POSTED TO: International Journal of Aquatic Biology [2383-0956]

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