[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
Search in website

Advanced Search
..
Receive site information
Enter your Email in the following box to receive the site news and information.
..
Indexing:
..
RSS

AWT IMAGE

..
:: Volume 20, Issue 1 (4-2011) ::
isfj 2011, 20(1): 147-160 Back to browse issues page
Growth pattern and daily growth increment in lanternfish (Benthosema pterotum) of the Oman Sea
T. Valinassab * , P. Hosseini Shekarabi
Abstract:   (17465 Views)
Lanternfish (Benthosema pterptum) is one of the most important fish species in the Oman Sea. We randomly sampled 300 myctophids from different depths in spring and winter 2009 in the Oman Sea using mid-water trawls. Male to female sex ratio was 0.36:0.64. The thin sections (60-80μm) of sagitta otoliths of the fish were prepared using polishing method. These sections showed that increment growth rings of lanternfish otolith are formed daily and the age condition is distinguishable on a daily basis. We found the life span of the species to be short (with a maximum of 349 micro-increments counted) and probably less than a year. The relationship between standard length (SL) and daily growth increment (D) was expressed as the linear equation: SL=0.87D+12.37 (R2=0.97). The relationship between lanternfish weight (W) and daily growth increment (D) was expressed as power equation: W=0.00003D1.754 (R2=0.95). Furthermore, morphometrical characteristics of otolith including otolith weight and length and daily growth increment relationships were expressed as linear equation (R2=0.96 and R2=0.83). The results showed that lanternfish growth rate were in the range 0.241mm/d-1 to 0.138mm/d-1 and decreased by body size and age in this range. *Corresponding author
Keywords: Lanternfish, Benthosema pterotum, Otolith, Morphometric, Oman Sea
Full-Text [PDF 2363 kb]   (5851 Downloads)    
Type of Study: Research | Subject: ارزيابي ذخاير و پويايي جمعيت
Received: 2011/09/21 | Accepted: 2015/07/11 | Published: 2015/07/11
Add your comments about this article
Your username or Email:

CAPTCHA
User comments
Comment sent by نرنرنیبنذرک on 2012/11/24
55د1ائدا4تلائ4دذ5ئد1ئو2ئ



XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Valinassab T, Hosseini Shekarabi P. Growth pattern and daily growth increment in lanternfish (Benthosema pterotum) of the Oman Sea . isfj 2011; 20 (1) :147-160
URL: http://isfj.ir/article-1-223-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 20, Issue 1 (4-2011) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

Persian site map - English site map - Created in 0.06 seconds with 41 queries by YEKTAWEB 4645