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Paper Information

Journal:   JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES)   WINTER 2016 , Volume 68 , Number 4; Page(s) 641 To 652.
 
Paper: 

TROPHIC NICHE SEGREGATION BETWEEN TWO CLOSELY RELATED SYMPATRIC ROCK NUTHATCH (SITTA TEPHRONOTA AND S.NEUMAYER) IN ZAGROUS MOUNTAIN RANGE

 
 
Author(s):  MOHAMMADI ALIREZA, KABOLI MOHAMMAD*, ASHRAFI SOHRAB, MOFIDI NEYESTANAK MOHSEN, YOUSEFI MASOUD
 
* FACULTY OF NATURAL RESOURCES, UNIVERSITY OF TEHRAN, IRAN
 
Abstract: 

Eastern Rock Nuthatch (Sitta tephronota) and Western Rock Nuthatch (S. neumayer) are two closely related and sympatric species in Iran, which have been known as the classical case of character displacement since 1950. Nevertheless, some questions related their niche partitioning is still unanswered. This study was conducted to determine the diet differentiation, as an important niche dimension, between the two species in their sympatric zone along the Zagros Mountains. The dietary composition of the two species was studied by analyzing stomach contents, using a stereo-microscope. The result showed that the most diet of the two species in spring was insects. Eastern Rock Nuthatch fed predominantly on beetles (Coleoptera), bugs (Hemiptera), and grasshoppers (Orthoptera) whereas Western Rock Nuthatch fed mostly on bugs (Hemiptera), beetles (Coleoptera), and butterfly’s (Lepidoptera).We used analysis of covariance for finding differences in two measurement traits (length of head in bugs and length of mandible in beetles) .Covariance analysis revealed that the relationships between body and prey size differ between the two species only in one measurement (length of head in bugs), so that Eastern Rock Nuthatch captured larger prey size. Furthermore our result showed that the Niche breath of these species is almost equal but their niche overlap is high. Result of this study showed the relative importance of body size of consumed prey as an important factor to trophic niche partitioning and stable coexistence of two closely sympatric species (Sitta tephronota and S. neumayer).

 
Keyword(s): CHARACTER DISPLACEMENT, S. NEUMAYER, SITTA TEPHRONOTA, TROPHIC NICHE SEGREGATION
 
 
References: 
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Click to Cite.
APA: Copy

MOHAMMADI, A., & KABOLI, M., & ASHRAFI, S., & MOFIDI NEYESTANAK, M., & YOUSEFI, M. (2016). TROPHIC NICHE SEGREGATION BETWEEN TWO CLOSELY RELATED SYMPATRIC ROCK NUTHATCH (SITTA TEPHRONOTA AND S.NEUMAYER) IN ZAGROUS MOUNTAIN RANGE. JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), 68(4), 641-652. https://www.sid.ir/en/journal/ViewPaper.aspx?id=508356



Vancouver: Copy

MOHAMMADI ALIREZA, KABOLI MOHAMMAD, ASHRAFI SOHRAB, MOFIDI NEYESTANAK MOHSEN, YOUSEFI MASOUD. TROPHIC NICHE SEGREGATION BETWEEN TWO CLOSELY RELATED SYMPATRIC ROCK NUTHATCH (SITTA TEPHRONOTA AND S.NEUMAYER) IN ZAGROUS MOUNTAIN RANGE. JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES). 2016 [cited 2021May10];68(4):641-652. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=508356



IEEE: Copy

MOHAMMADI, A., KABOLI, M., ASHRAFI, S., MOFIDI NEYESTANAK, M., YOUSEFI, M., 2016. TROPHIC NICHE SEGREGATION BETWEEN TWO CLOSELY RELATED SYMPATRIC ROCK NUTHATCH (SITTA TEPHRONOTA AND S.NEUMAYER) IN ZAGROUS MOUNTAIN RANGE. JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), [online] 68(4), pp.641-652. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=508356.



 
 
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