Evaluation of some feeding habits of Rastrelliger kanagurta (Cuvier, 1817) in the Persian Gulf (Hormozgan Province)

Authors

  • A Vosoughi Islamic Azad University - Science and Research Branch
Abstract:

The Indian mackerel (Rastrelliger kanagurta) is one of the commercial pelagic fish in the Persian Gulf and Oman Sea. In the current research, food preference index (FP), fullness index (FI), and stomach contents of Rastrelliger kanagurta were evaluated to assess the quantity and type of food which this species consumes in the study area. The samples were collected randomly from Bandar - Abbas and Qeshm Island landing sites. A total of 573 specimens were collected during 2011-2012 of which 299 specimens were female and other 274 specimens were male. The minimum and maximum total lengths were 13.9 and 35.5cm, respectively with the highest frequency in length group of 22-24cm. Results showed that 21.3% of stomachs were full, 44.5% were semi-full and 34.2% were empty. Planktons as well as random food such as bony fish were the main food of this species. Fullness index and Vacuity index for this species were calculated 21.3 and 34.2, respectively. Stomach contents analysis revealed that phytoplankton (66%) and zooplankton (34%) form the main food of Rastrelliger kanagurta. Among the phytoplankton, Bacillariophyceae (86%) was the dominant food followed by Cyanophyceae (8%) and Dynophyceae (6%). Copepods (88%) were dominant zooplanktonic foods. Encrasicholina punctifer was the only bony fish observed. Maximum and minimum of GaSI index were 2.57 (October) and 1.12 (Februrary), correspondingly. Also, condition factor and relative length gut were calculated 1.76 and 2.38, respectively. The results indicated that this fish is a relatively frugal species which consumes plankton as the main food and there is no difference in feeding of male and female.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Food and feeding habits of Indian mackerel (Rastrelliger kanagurta) in the southern part of Qeshm Island, Persian Gulf

The study investigated the stomach contents of Indian mackerel (Rastrelliger kanagurta) from the southern part of Qeshm Island in the Persian Gulf from April 2016 through March 2017. The food and feeding behavior of R. kanagurta with a fork length of 17.8 to 22.5 cm was assessed from the analysis of gut contents. The frequency of occurrence and numeric methods were used for stomach content anal...

full text

Biology of Indian Mackerel, Rastrelliger kanagurta (Cuvier,1817) in the Western Waters of Aceh

A study of the biology of Indian mackerel, Rastrelliger kanagurta (Cuvier, 1817) in the Western Waters of Aceh, Indonesia was carried out from January to December 2014 and a total of 1343 Indian mackerels were collected randomly twice a month. The allometric coefficients (b) in the present study were between 2.625 and 3.449 with coefficient of determination (R2) values that range between 0.612 ...

full text

Biology of Indian Mackerel, Rastrelliger kanagurta (Cuvier,1817) in the Western Waters of Aceh

A study of the biology of Indian mackerel, Rastrelliger kanagurta (Cuvier, 1817) in the Western Waters of Aceh, Indonesia was carried out from January to December 2014 and a total of 1343 Indian mackerels were collected randomly twice a month. The allometric coefficients (b) in the present study were between 2.625 and 3.449 with coefficient of determination (R2) values that range between 0.612 ...

full text

پویایی جمعیت ماهی طلال (1817 Rastrelliger kanagurta, Cuvier) در آب های استان هرمزگان

به­ منظور بررسی پویایی جمعیت ماهی طلال (1817 Rastrelliger kanagurta, Cuvier) نمونه­ برداری به ­صورت ماهانه از آبان ­ماه91 الی مهرماه 92 و به­ روش تصادفی ساده در مناطق تخلیه صید شهر بندرعباس و جزیره قشم  انجام گردید. در مجموع فراوانی طول کل وچنگ...

full text

morphology, geochemistry, mineralogy, and micromorphology of soils of hormozgan province in relation to parent materials

ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...

15 صفحه اول

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 18  issue 2

pages  319- 331

publication date 2019-04-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023