Chondrostoma esmaeilii Eagderi, Jouladeh-Roudbar, Birecikligil, Cicek & Coad 2017
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2025
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| author | Freyhof, Jörg Yoğurtçuoğlu, Baran Jouladeh-Roudbar, Arash Kaya, Cüneyt |
| author_facet | Freyhof, Jörg Yoğurtçuoğlu, Baran Jouladeh-Roudbar, Arash Kaya, Cüneyt |
| contents | <p><b><i>Chondrostoma esmaeilii</i></b></p><p><b>Common name.</b> Ravansar nase.</p><p><b>Diagnosis.</b> Distinguished from other species of <i>Chondrostoma</i> in Caspian, Persian Gulf, and Kor endorheic basins in Iran by: ● no cornified sheath covering lower lip / ○ mouth markedly arched both in juveniles and adults / ○ 8−9½, usually 8½, branched dorsal rays / ○ 10½ branched anal rays / ○ 51−58 total lateral-line scales / ● 15−17 gill rakers / ○ 6–6 pharyngeal teeth. Size up to 120 mm SL.</p><p><b>Distribution.</b> Iran: Sarab-e Ravansar, a headwater of Seymareh, a tributary of Karkheh.</p><p><b>Habitat.</b> Slow to moderate-flowing streams with muddy and sandy bottoms and dense riparian vegetation.</p><p><b>Biology.</b> Feeds on periphyton scraped from hard substrate. No data.</p><p><b>Conservation status.</b> CR; known only from a small population in a very small area. Desiccation of the river is a major threat, and the species may be at the edge of extinction.</p><p><b>Remarks.</b> Mitochondrial DNA analysis places this species in <i>C. regium</i>, which is widespread in the region. The general morphology suggests that <i>C. esmaeilii</i> may be a hybrid between <i>C. regium</i> and <i>Squalius verepi</i>. As these two species have not been found in the range of <i>C. esmaeilii</i> (despite several attempts), this species is likely a stabilised species of hybrid origin that reproduces independently of its parental species. More research is needed to clarify the situation.</p><p><b>Further reading.</b> Eagderi et al. 2017c (description).</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17969166 |
| institution | Zenodo |
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| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Chondrostoma esmaeilii Eagderi, Jouladeh-Roudbar, Birecikligil, Cicek & Coad 2017 Freyhof, Jörg Yoğurtçuoğlu, Baran Jouladeh-Roudbar, Arash Kaya, Cüneyt Biodiversity Taxonomy Animalia Chordata Cypriniformes Cyprinidae Chondrostoma Chondrostoma esmaeilii <p><b><i>Chondrostoma esmaeilii</i></b></p><p><b>Common name.</b> Ravansar nase.</p><p><b>Diagnosis.</b> Distinguished from other species of <i>Chondrostoma</i> in Caspian, Persian Gulf, and Kor endorheic basins in Iran by: ● no cornified sheath covering lower lip / ○ mouth markedly arched both in juveniles and adults / ○ 8−9½, usually 8½, branched dorsal rays / ○ 10½ branched anal rays / ○ 51−58 total lateral-line scales / ● 15−17 gill rakers / ○ 6–6 pharyngeal teeth. Size up to 120 mm SL.</p><p><b>Distribution.</b> Iran: Sarab-e Ravansar, a headwater of Seymareh, a tributary of Karkheh.</p><p><b>Habitat.</b> Slow to moderate-flowing streams with muddy and sandy bottoms and dense riparian vegetation.</p><p><b>Biology.</b> Feeds on periphyton scraped from hard substrate. No data.</p><p><b>Conservation status.</b> CR; known only from a small population in a very small area. Desiccation of the river is a major threat, and the species may be at the edge of extinction.</p><p><b>Remarks.</b> Mitochondrial DNA analysis places this species in <i>C. regium</i>, which is widespread in the region. The general morphology suggests that <i>C. esmaeilii</i> may be a hybrid between <i>C. regium</i> and <i>Squalius verepi</i>. As these two species have not been found in the range of <i>C. esmaeilii</i> (despite several attempts), this species is likely a stabilised species of hybrid origin that reproduces independently of its parental species. More research is needed to clarify the situation.</p><p><b>Further reading.</b> Eagderi et al. 2017c (description).</p> |
| title | Chondrostoma esmaeilii Eagderi, Jouladeh-Roudbar, Birecikligil, Cicek & Coad 2017 |
| topic | Biodiversity Taxonomy Animalia Chordata Cypriniformes Cyprinidae Chondrostoma Chondrostoma esmaeilii |
| url | https://doi.org/10.5281/zenodo.17969166 |