11167

862 دكتري

دكتري

محيط زيست

اصفهان: دانشگاه صنعتي اصفهان، دانشكده منابع طبيعي

1394

پانزده، 156ص.: مصور

محمودرضا همامي، منصوره ملكيان

حميدرضا رضايي

سعيد پورمنافي، آقافخر ميرلوحي، ابوالقاسم اسماعيلي

1395/01/25

مهندسي منابع طبيعي

ID862 دكتري

خصوصيات ريختي فيزيولوژيكي و رفتار آهو گواتردار ۴ مقدمها بر فيلوژني جنس آهو ۶ Gazella وضعيت حفاظتي و ردهبند آهو گواتردار از گذشته تا به امروز ۴ مهمترين تهديدات آهو گواتردار در جهان و ايران فصل دوم ارزيابي مقياس مكاني مناسب در مدلساز پراكنش آهو گواتردار در مركز كشور چكيده مقدمه بيان مسئله اهداف پژوهش و سابقه تحقيق ۶ معرفي روش مدلساز حداكثر نظمي ۴ مواد و روشها ۴ ثبت نقاط حضور ۴ ۴ بررسيها ميداني ۴ متغيرها وارد شده به مدل ۴ متغيرها توپوگرافيكي و پيشپردازشها انجام شده ۴ متغيرها اقليمي و پيشپردازشها انجام شده ۴ ۴ متغيرها زيستي ۶ ۴ ۴ متغيرها انساني و فاصلها ۴ ۴ تحليل هم خطي چندگانه و همبستگي بين متغيرها ۴ ۵ آماده ساز متغيرها و تعيين چهارچوب زماني مكاني مطالعه ۴ ۶ اجرا مدل مكسنت ۴ ارزيابي مدل مكسنت ۵ نتايج ۵ انتخاب متغيرها وارد شده به مدل مكسنت ۵ اجرا مدل هشت

Effect of habitat heterogeneity on genetic structure and ecology of goitered gazelle Gazella subgutturosa populations in central Iran using a landscape genetic approach Rasoul Khosravi r khosravi@na iut ac ir January 17 2016 Department of Natural Resources Isfahan University of Technology Isfahan 84156 83111 Iran Degree PhD Language Persian Dr Mahmoud Reza Hemami mrhemami@cc iut ac ir Dr Mansoureh Malekian mmalekian@cc iut ac ir Abstract The number of goitred gazelle populations had significantly decreased due to natural and anthropogenic threats over the last century Today the remaining populations of this species are confined to protected areas Lack of detailed information about genetic variation gene flow and phylogenetic relationships among populations of this threatened species has hampered conservation efforts Landscape connectivity among the mainly isolated populations of goitered gazelle is required for reducing the effects of genetic threats In this study we examined factors that influence gene flow among six goitered gazelle populations in central Iran using a landscape genetic approach and non invasive sampling method In the first step geographic distribution of goitered gazelle in Central Iran was predicted using 12 uncorrelated biogeographic variables The distribution of potential habitats was strongly influenced by bioclimatic data vegetation type and density and elevation In the next step genetic structure gene flow and taxonomic status of goitred gazelle was surveyed using 15 microsatellites markers and 400 bp of cytochrome b Low levels of haplotype diversity were seen in populations A total of five cyt b haplotypes were identified from 170 gazelle samples The microsatellite markers showed higher genetic variation than cyt b The gazelles in the Mooteh and Biduyeh protected areas showed the highest and lowest genetic and haplotype diversity respectively Individual based bayesian clustering algorithms revealed three highly admixed genetic populations including Biduyeh first group Kolah Ghazi second group Mooteh Ghamoshloo Kahyaz and Kalmand third group The effect of natural and anthropogenic factors on observed genetic structure was elucidated using isolation index isolation by distance IBD and isolation by resistance IBR IBD analysis showed a positive but insignificant correlation with geographic distance R2 0 30 P 0 026 Isolation by resistance showed that IBR has greater impact on the gazelle population genetic structure than IBD R2 0 42 Based on the obtained results we concluded that a combination of geographic distance landscape resistance and anthropogenic factors influence genetic structure and gene flow in goitered gazelle populations in central Iran The obtained results highlight the conservation importance of goitered gazelle populations in Biduyeh Kahyaz and Kolah which should be considered as separate management units The results of this study can be used in designing migration corridors Keywords Goitred gazelle Gene flow Microsatellite Genetic structure Cytochrome b Landscape genetic Central Iran

محمودرضا همامي، منصوره ملكيان

حميدرضا رضايي

سعيد پورمنافي، آقافخر ميرلوحي، ابوالقاسم اسماعيلي