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

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MOHAMMADI ALIREZA; KABOLI MOHAMMAD; ASHRAFI SOHRAB; MOFIDI NEYESTANAK MOHSEN; YOUSEFI MASOUD

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Journal: Journal of Natural Environment Year:2016 | Volume:68 | Issue:4 Page(s): 641-652

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Title

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

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Keywords

CHARACTER DISPLACEMENTQ2

S. NEUMAYERQ2

SITTA TEPHRONOTAQ2

TROPHIC NICHE SEGREGATIONQ2

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).

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APA: Copy

MOHAMMADI, ALIREZA, KABOLI, MOHAMMAD, ASHRAFI, SOHRAB, MOFIDI NEYESTANAK, MOHSEN, & YOUSEFI, MASOUD. (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. SID. https://sid.ir/paper/194898/en

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)[Internet]. 2016;68(4):641-652. Available from: https://sid.ir/paper/194898/en

IEEE: Copy

ALIREZA MOHAMMADI, MOHAMMAD KABOLI, SOHRAB ASHRAFI, MOHSEN MOFIDI NEYESTANAK, and MASOUD YOUSEFI, “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), vol. 68, no. 4, pp. 641–652, 2016, [Online]. Available: https://sid.ir/paper/194898/en

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