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Morteza Naderi

Morteza Naderi

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0002-7578-4159
Education: PhD.
ScopusId:
Faculty: Agriculture and Environment
Address: Arak University
Phone:

Research

Title
Food Habits of Stellate Sturgeon, Acipenser stellatus Pallas, 1771, in South-Eastern Parts of the Caspian Sea, Iran
Type
JournalPaper
Keywords
Food Habits of Stellate Sturgeon, Acipenser stellatus Pallas, 1771, in South-Eastern Parts of the Caspian Sea, Iran
Year
2016
Journal ACTA ZOOL BULGAR
DOI
Researchers Morteza Naderi ، Afsaneh Asgharzadeh ، Abdolmajid Haji Moradlo ، Rasool Ghorbani

Abstract

One hundred and thirty-five specimens of Acipenser stellatus were collected from the fishery stations of Babolsar, Farahabad and Bandar-e-Torkaman, south-eastern Caspian Sea between the winter of 2001 and spring 2003. The content of the alimentary canal was studied fresh, prey items were separated and then fixed in 10% formalin for identification. The probability percentage and frequency of various prey items, the percentage of empty stomachs along with prey dominance were calculated. Nine of the registered food items were considered to be the principle and dominant food items and had very high importance as demonstrated by the dominance index. The percentage of alimentary canal emptiness in spring was lower than that in other seasons. Seasonal changes in food composition were observed. ANOVA analysis showed no significant difference of prey preference among sampling sites while we found significant differences among seasons.