فهرست مطالب

Ichthyology - Volume:4 Issue: 3, Sep 2017

Iranian Journal of Ichthyology
Volume:4 Issue: 3, Sep 2017

  • تاریخ انتشار: 1396/07/01
  • تعداد عناوین: 7
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  • Zohreh Moradi Pages 188-219
    Myths, legends and marvelous creatures constitute an integral part of cultural, his-torical and literary heritage of all nations. Myths and legends are the subjects of studies in various fields such as literature, psychology, linguistics, folklore, etc. yet they have not been discussed in detail in the field of ichthyology. This paper is an attempt to review available information on what is considered as fish in myths and manuscripts including a historical text, Qazwini’s book (published in 1263 A.D.), those which are available in the museums around the world and those obtained during the fieldwork carried out in 2015 in some regions of Hor-muzgan Province, Iran. It seems that aquatic creatures, especially fishes, have been at the cen-ter of human thought for thousands of years, considering them as a blessed or hated creatures having a variety of forms with different faces resembling a human, snake, owl, cat or other animals, which are oriented with human beliefs, cultures and traditions.
    Keywords: Marvelous, Myth, Human Beliefs, Blessed Creatures, Ichthyology, Iran
  • Yazdan Keivany, Mohsen Arab Pages 220-230
    A total of 136 specimens of trout barb, Capoeta trutta (Heckel, 1843) from eight rivers of the Tigris Basin were caught by seine net to compare their shape using geometric morphometrics. After anesthesia, using 1% clove oil solution, the specimens were fixed in 10% buffered formalin and transferred to the Ichthyology Museum of Isfahan University of Technology for further studies. The left sides of the specimens were photographed using a copy-stand equipped with a digital camera. To extract body shape data, 13 homologous landmark-points were digitized using tpsDig2 software. After GPA superimposing, the landmark data, were analyzed using Principal Components Analysis (PCA), Canonical Variate Analysis (CVA) and Cluster Analysis (CA) to explore the patterns of variation in their body shape. All multivariate analyses were computed using PAST software. The consensus configuration of populations was visualized using the wireframe graphs in MorphoJ to compare their shape difference. The PCA, CVA and CA showed differences among the populations, especially, between Konjancham and other populations. This result showed that geometric morphometric methods could separate trout barb populations of the Tigris River Basin from each other to a great extent. Potential factors contributing to the observed variations include differences in physicochemical parameters of rivers and geographic distance among the populations. However, for more details, molecular studies are needed.
    Keywords: Cypriniformes, Geometry, Multivariate Analysis, Procrustes, Persian Gulf
  • Halimeh Zareian, Hamid Reza Esmaeili Pages 231-269
    The members of the genus Capoeta show an abstruse taxonomic status, a complex evolutionary history with the highest diversification in the Middle East and are closely related to the genus Luciobarbus. Our molecular and morphological results confirm the existence of eight species within the Capoeta damascina group in Iran. In this paper all eight recognized species are reviewed, and diagnoses are presented for all species. Capoeta birunii is considered as new species from Zayandehrud drainage basins. This species is distinguished from other small scaled Capoeta in the C. damascina group by a combination of morphological and molecular characters.
    Keywords: Capoeta, Molecular analyses, Systematics, Distribution
  • Md. Sarower-E- Mahfuj, Ashraful Alam, Imran Parvez, Maruf Hossain Minar, Abdus Samad Pages 270-280
    The morphological variations of bata, Labeo bata (Hamilton, 1822) was studied based on morphometric and landmark analysis to know the populations status in the northern and southwestern Bangladesh. Samples were collected from six river sources viz. Mathabhanga (MR); Kirtonkhola, Barisal (KR); Nabaganga, Jhenidah (NR); Padma (PdR); Jamuna (JR) and Punorvoba, Dinajpur (PR). Univariate statistics among 22 truss measurements and 15 morphometric characters revealed a significant inter stock variation (P
    Keywords: Morphology, Landmark analysis, Stock identification, Baseline, Minor carp
  • Amir Pourshabanan, Alireza Sari, Hamed Mousavi-Sabet Pages 281-289
    Loach fishes of the genus Oxynoemacheilus, are found in Iran and adjusted countries, but their reproductive parameters are barely known. The main aim of this study was to obtain reproductive characteristics of Oxynoemacheilus bergianus (Derjavin, 1934). Sampling was carried out at monthly intervals throughout the year and 279 individuals of O. bergianus were caught from the River Jajrud in the Namak Lake basin, central Iran. Age, fecundity, oocyte diameter and Gonado-Somatic Index (GSI) were examined. Regression analyses were used to find relations between fecundity and fish size, gonad weight (Wg) and age. The average egg diameter ranged from 142.8 micrometer (August) to 513.1 micrometer (March). Spawning took place in March, when the water temperature was between 16 and 20°C. The average GSI values for females at the beginning of the reproduction period (February) and in ripe mature females (March), were 9.8% and 22.4%, respectively. The averages of absolute and relative fecundity (relative to body weight) were 2792.4 eggs (SE±692.5) and of 637.9 (SE±119.6) per gram body weight, respectively. The absolute fecundity was significantly related to body weight and ovary weight. Based on the pattern of GSI, it was concluded that this fish has a relatively prolonged active reproductive period. The present knowledge could be used in the conservation and management strategies intended to maintain the O. bergianus stock.
    Keywords: Life history, Spawning season, Reproductive indices, Nemacheilidae
  • Kaveh Amiri, Nader Shabanipour, Soheil Eagderi Pages 290-298
    During the past two decades, total catch of the Caspian Kilka have reached to a crisis point. The present study aimed to predict the Kilka Potential Fishing Zone (PFZ) across Iranian waters of southern region of the Caspian Sea. The potential fishing zones of Kilka fishes were modelled using MaxEnt and fishing points’ data in the Anzali and Babolsar ports. Two year-catch (2015 to 2016) geographical points and raster environmental images were provided to produce a map for Kilka PFZ. The selected environmental variables were, night time Sea Surface Temperature, Chlorophyll-a concentration and turbidity. According to the results, prediction could be made using the environmental factors for Kilka PFZ with high accuracy (AUC=0.96; SD=0.01) with NSST having the highest impact on the predictions.
    Keywords: Fishing, Modeling, Environmental variables, Clupeidae
  • Bijay Kalii Mahapatra, Alakesh Pradhan, Debarghya Maji, Shreya Bhattacharya Pages 299-304
    Spiny whitefin flathead is a minor or less commercially important bycatch trawl landing of India. Although it does not participate in the high commercially important category of landings of the country but has both food and ornamental value. The availability of the species can give an opportunity to utilize it as one of the important marine ornamental fish genetic resource of India. In the present study, the occurrence of Kumococius rodericensis (Cuvier, 1829), is reported from Digha Mohana, North-east coast of India based on three specimens and its detailed morphometric and meristic characteristics are provided.
    Keywords: Occurrence, Spiny whitefin flathead, Morphology, Indian Ocean