Iranian Journal of Ichthyology最新文献_第8页

Fishing-in-balance, mean trophic level, ratio of pelagic and demersal fish landings and piscivory indices of coastal fisheries landings in Iranian part of the Caspian Sea 平衡捕捞、平均营养水平、中上层和底栖鱼类上岸的比例以及里海伊朗部分沿海渔业上岸的渔业指数

Iranian Journal of Ichthyology Pub Date : 2019-06-25 DOI: 10.22034/IJI.V6I2.293

S. Hashemi, S. A. T. Motlagh, A. Hedayati, H. Fazli

引用次数: 1

A preliminary investigation of the relationship between otolith weight and age for Chondrostoma regium (Heckel, 1843) (Teleostei: Cyprinidae) 王氏软骨瘤（Heckel，1843）耳石重量与年龄关系的初步研究

Iranian Journal of Ichthyology Pub Date : 2019-06-25 DOI: 10.22034/IJI.V6I2.264

Omid Beyraghdar Kashkooli, S. Asadollah, Yaser Ahmadi

{"title":"A preliminary investigation of the relationship between otolith weight and age for Chondrostoma regium (Heckel, 1843) (Teleostei: Cyprinidae)","authors":"Omid Beyraghdar Kashkooli, S. Asadollah, Yaser Ahmadi","doi":"10.22034/IJI.V6I2.264","DOIUrl":"https://doi.org/10.22034/IJI.V6I2.264","url":null,"abstract":"To our knowledge, no study is available on the relationships between otolith mass and age as well as body weight and length of Chondrostoma regium (Heckel, 1843) in the Zayandeh River, hence the present study attempted to examine this rather simple, efficient and cost-effective approach to contribute in providing more objective information required in age-related studies of this species. During March-April 2017 random samples of C. regium were collected by a river seine in the Zayandeh River. Sampled fish ages were between 2 to 5 years and ranges of total length, body weight and otolith mass averages of samples were 82.2-161.6mm, 5.35-42.35g and 4.1-7.3mg, respectively. As the fish grow, total length, body weight and otolith mass averages showed a clear increasing trend. The results revealed significant positive relationships between variability of body length and otolith weight ( P <0.05) as well as variability of body weight and otolith mass ( P <0.05) of C. regium . Furthermore, an obvious significant increasing trend of otolith mass with age increment ( P <0.05) is found. The average weights of otoliths in the present study increased with age, length and weight which evidently confirms that the otolith mass increase in C. regium is in compliance with somatic growth through the ontogenetic processes.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"6 1","pages":"106-111"},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45982220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lagoon shrimp goby, Cryptocentrus cyanotaenia (Bleeker, 1853) (Teleostei: Gobiidae), an additional fish element for the Iranian waters 泻湖虾虎鱼，蓝带隐中央病毒（Bleeker，1853）（Teleostei：虾虎科），伊朗水域的一种额外鱼类

Iranian Journal of Ichthyology Pub Date : 2019-06-21 DOI: 10.22034/IJI.V6I2.417

R. Sadeghi, H. Esmaeili, M. Riazi, M. Taherizadeh, M. Safaie

{"title":"Lagoon shrimp goby, Cryptocentrus cyanotaenia (Bleeker, 1853) (Teleostei: Gobiidae), an additional fish element for the Iranian waters","authors":"R. Sadeghi, H. Esmaeili, M. Riazi, M. Taherizadeh, M. Safaie","doi":"10.22034/IJI.V6I2.417","DOIUrl":"https://doi.org/10.22034/IJI.V6I2.417","url":null,"abstract":"Shrimp-associated gobies are burrowing fish of small to medium size that are common inhabitants of sand and mud substrates throughout the tropical Indo-Pacific region. Due to specific habitat preference, cryptic behavior, the small size and sampling difficulties, many gobies were previously overlooked and thus the knowledge about their distribution is rather scarce. This study presents lagoon shrimp goby, Cryptocentrus cyanotaenia , as additional fish element for the Iranian waters in the coast of Hormuz Island (Strait of Hormuz). The distribution range of lagoon shrimp goby was in the Western Central Pacific and eastern Indian Ocean. This species is distinguished by the several traits such as body elongate and compressed, snout truncate, body brownish grey color with 11 vertical narrow whitish blue lines on the sides, largely greenish yellow on head and mandible, head and base of pectoral fin with numerous short blue oblique broken lines and spots with markings on the head and snout. Providing data on C. cyanotaenia which is now widely distributed in the Indo-Pacific, would offer particularly valuable information on the biogeography of species.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"6 1","pages":"98-105"},"PeriodicalIF":0.0,"publicationDate":"2019-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47624197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Review of the tenches of Iran (Family Tincidae) 回顾伊朗的tenches (Family Tincidae)

Iranian Journal of Ichthyology Pub Date : 2019-06-21 DOI: 10.22034/IJI.V6I2.324

B. Coad

引用次数: 2

Fish Species Diversity of Fars, by Esmaeili H.R & Teimori A. 2016. 288 p. Fars Environment Department, ISBN: 978-600-04-5600-9 Fars鱼类物种多样性，Esmaeili H.R & Teimori A. 2016。288 p.法尔斯环境部，ISBN: 978-600-04-5600-9

Iranian Journal of Ichthyology Pub Date : 2019-06-21 DOI: 10.22034/IJI.V6I2.424

A. Radkhah, S. Eagderi, H. Poorbagher

引用次数: 2

Impact of climate change on the distribution of brown trout, Salmo trutta Linnaeus, 1758 (Teleostei: Salmonidae) using ensemble modelling approach in Iran 气候变化对褐鳟分布的影响，Salmo trutta Linnaeus，1758（Teleostei：三文鱼科），在伊朗使用集合建模方法

Iranian Journal of Ichthyology Pub Date : 2019-03-31 DOI: 10.22034/IJI.V6I1.388

H. Mostafavi, J. Kambouzia

引用次数: 5

Reproductive biology of the invasive sharpbelly, Hemiculter leucisculus (Basilewsky, 1855), from the southern Caspian Sea basin 来自里海南部盆地的入侵性尖腹蛛——白纹半壳蛛（Basilewsky，1855）的繁殖生物学

Iranian Journal of Ichthyology Pub Date : 2019-03-30 DOI: 10.22034/IJI.V6I1.285

H. Mousavi-Sabet, A. Heidari, M. Salehi

{"title":"Reproductive biology of the invasive sharpbelly, Hemiculter leucisculus (Basilewsky, 1855), from the southern Caspian Sea basin","authors":"H. Mousavi-Sabet, A. Heidari, M. Salehi","doi":"10.22034/IJI.V6I1.285","DOIUrl":"https://doi.org/10.22034/IJI.V6I1.285","url":null,"abstract":"The sharpbelly, Hemiculter leucisculus , an invasive species, has expanded its range throughout much of Asia and into the Middle East. However, little is known of its reproductive information regarding spawning pattern and season that could possibly explain its success as an invasive species. This research is the first presentation of its reproductive characteristics, which was conducted based on 235 individuals collected monthly throughout a year from Sefid River, in the southern Caspian Sea basin. Age, sex ratio, fecundity, oocytes diameter and gonado-somatic index were calculated. Regression analyses were used to find relations among fecundity and fish size, gonad weight (Wg) and age. The mature males and females were longer than 93.0 and 99.7mm in total length, respectively (+1 in age). The average egg diameter ranged from 0.4mm (April) to 1.1mm (August). Spawning took place in August, when the water temperature was 23 to 26°C. Average gonado-somatic index values for females at the beginning of the reproduction period (March) and in ripe mature spawning females (August) were 2.90% and 16.97%, respectively. The averages of absolute and relative fecundities were 19978.6 and 607.1 eggs, respectively. The absolute fecundity was significantly related to body weight, ovary weight and age. A potentially high reproductive capacity, comparatively small eggs, short time of eggs’ development, fast sexual maturation, short life span, tolerance to a wide range of environmental conditions, all promote the invasion of this invasive sharpbelly in freshwater ecosystems of the temperate climate zone.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"6 1","pages":"31-40"},"PeriodicalIF":0.0,"publicationDate":"2019-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48106812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Length-weight and length-length relationships, sex ratio and condition factors of the Asian striped dwarf catfish Mystus tengara (Hamilton, 1822) (Siluriformes: Bagridae) in the Ganges River, Northwestern Bangladesh 孟加拉西北部恒河亚洲条纹矮鲶(Hamilton, 1822)的长重和长长关系、性别比例和条件因素

Iranian Journal of Ichthyology Pub Date : 2019-03-30 DOI: 10.22034/IJI.V6I1.334

N. R. Mitu, M. M. Alam, M. A. Hussain, M. Hasan, A. Singha

引用次数: 2

Review of the gobionids of Iran (Family Gobionidae) 伊朗虾蛄(虾蛄科)研究进展

Iranian Journal of Ichthyology Pub Date : 2019-03-30 DOI: 10.22034/IJI.V6I1.325

B. Coad

引用次数: 2

Interspecific morphological variation among members of the genus Cyprinion Heckel, 1843 (Teleostei: Cyprinidae) in Iran, using landmark-based geometric morphometric technique 使用基于地标的几何形态测量技术，伊朗Cyprinion Heckel属成员的种间形态变异，1843

Iranian Journal of Ichthyology Pub Date : 2019-03-25 DOI: 10.22034/IJI.V6I1.404

M. Nasri, S. Eagderi, H. Farahmand, Hasan Nezhadheydari

{"title":"Interspecific morphological variation among members of the genus Cyprinion Heckel, 1843 (Teleostei: Cyprinidae) in Iran, using landmark-based geometric morphometric technique","authors":"M. Nasri, S. Eagderi, H. Farahmand, Hasan Nezhadheydari","doi":"10.22034/IJI.V6I1.404","DOIUrl":"https://doi.org/10.22034/IJI.V6I1.404","url":null,"abstract":"Morphological variation among Cyprinion species in Iran was studied using landmark-based geometric morphometrics. A total of 848 specimens were caught from five basins throughout Iran during 2013-2015. A total number of 15 landmark-points were defined and digitized on 2D pictures. Despite of intraspecific differences among Cyprinion fishes, CVA divided all populations into three major groups viz. C. macrostomum , C. kais and C. tenuiradius (group X), C. watsoni and C. microphthalmum (group Y ) and C. milesi (group Z). According to the results, C. macrostomum group can be distinguished from other groups by having deeper body, least head length and depth, the longest dorsal-fin base and least caudal peduncle length. Cyprinion milesi has the longest anal-fin base, least body depth, deepest caudal peduncle and longest head. Cyprinion watsoni has the longest caudal peduncle and least dorsal-fin base and C. microphthalmum is distinguished by having the least caudal peduncle length and depth. The main reasons of observed intraspecies morphological diversity among the fishes is proposed to be some phenotypic plasticity related to climatic and zoogeographical factors. The results suggest that the most possible factor influencing morphological variations among Iranian Cyprinion species is habitat related differences.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"6 1","pages":"54-64"},"PeriodicalIF":0.0,"publicationDate":"2019-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44168730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1