مطالعه بيوسيستماتيك قورباغه مردابي(Pelophylax ridibundus (Pallas, 177 در زيستگاههاي تالابي الشتر( استان لرستان )

Biosystematic study of marsh Frog (Pelophylax ridibundus) (Pallas, 1771) In wetland habitats of Aleshtar (Lorestan province

ﻗﻮرﺑﺎﻏﻪ ﻣﺮداﺑﯽ )pelophylax ridibundus( ﺗﻨﻬﺎ ﮔﻮﻧﻪ از ﺟﻨﺲ Pelophylax اﺳﺖ ﮐﻪ ﺗﻘﺮﯾﺒﺎ درﻫﻤﻪ ﻧﻮاﺣﯽ اﯾﺮان ﭘﺮاﮐﻨﺶ دارد. ﻣﻄﺎﻟﻌﻪ ﺣﺎﺿﺮ در 3 اﯾﺴﺘﮕﺎه ﺗﺎﻻﺑﯽ ﺷﻬﺮﺳﺘﺎن اﻟﺸﺘﺮ در اﺳﺘﺎن ﻟﺮﺳﺘﺎن و ﺑﺎ ﻫﺪف ﻣﻄﺎﻟﻌﻪ رﯾﺨﺖ ﺷﻨﺎﺳﯽ، رﯾﺨﺖ ﺳﻨﺠﯽ وﯾﮋﮔﯽ ﻫﺎي ﺗﻮﻟﯿﺪ ﻣﺜﻠﯽ، ﮐﺎرﯾﻮﻟﻮژي و ﻣﻄﺎﻟﻌﻪ ﺑﺎﻓﺘﯽ ﭘﻮﺳﺖ اﻧﺠﺎم ﺷﺪ و ﺗﻌﺪاد 160 ﻧﻤﻮﻧﻪ ﻣﻮرد ﺑﺮرﺳﯽ ﻗﺮار ﮔﺮﻓﺖ . در ﻣﺠﻤﻮع 3 رﯾﺨﺖ در ﺳﻄﺢ ﺗﺎﻻبﻫﺎي ﻣﻮرد ﺑﺮرﺳﯽ ﺷﻨﺎﺳﺎﯾﯽ ﮔﺮدﯾﺪ . در ﺑﺨﺶ ﺗﺤﻠﯿﻞ ﺻﻔﺎت ﮐﻤﯽ ، دو ﺟﻨﺲ از ﻧﻈﺮ وزن و ﻗﻄﺮ ران ﺗﻔﺎوت ﻣﻌﻨﯽ داري ﻧﺪاﺷﺘﻨﺪ در ﺣﺎﻟﯿﮑﻪ در ﺻﻔﺖ ﻃﻮل ﮐﻞ ﻣﺘﻔﺎوت ﺑﻮدﻧﺪ . ﺑﯿﺸﺘﺮﯾﻦ ﺷﺎﺧﺺ ﺗﻮﻟﯿﺪ ﻣﺜﻠﯽ در ﻫﺮ دو ﺟﻨﺲ در ﻓﺼﻞ ﺑﻬﺎر اﻧﺪازه ﮔﯿﺮي ﺷﺪ ﺑﻌﻼوه وزن ﺣﺪاﮐﺜﺮ رﺳﯿﺪﮔﯽ ﺑﺮاي ﻧﺮﻫﺎ ﺑﻪ ﻣﯿﺰان 64/12 و ﺑﺮاي ﻣﺎده ﻫﺎ 83/9 ﮔﺮم ﻣﺤﺎﺳﺒﻪ ﮔﺮدﯾﺪ . ﻋﺪد ﮐﺮوﻣﻮزوﻣﯽ ﮔﻮﻧﻪ در ﻣﻨﺎﻃﻖ ﻣﻮرد ﻣﻄﺎﻟﻌﻪ 26 =2n ﺑﻮد ﺑﻌﻼوه ﮐﺮوﻣﻮزوﻣﻬﺎي ﻫﺘﺮوﻣﻮرف ﺟﻨﺴﯽ ﻣﺸﺎﻫﺪه ﮔﺮدﯾﺪ . ﺳﺎﺧﺘﺎر ﭘﻮﺳﺖ در ﺗﻤﺎﻣﯽ اﯾﺴﺘﮕﺎﻫﻬﺎ ﻣﺸﺎﺑﻪ و ﺷﺎﻣﻞ دو ﻻﯾﻪ اﭘﯿﺪرم و درم ﺑﻮد ، در ﻻﯾﻪ اﺳﻔﻨﺠﯽ درم در ﻫﺮ دو ﺟﻨﺲ ﻏﺪد ﻣﻮﮐﻮﺳﯽ و ﮔﺮاﻧﻮﻻر ﻣﺸﺎﻫﺪه ﮔﺮدﯾﺪ و ﭘﻮﺳﺖ ﺳﻄﺢ ﺷﮑﻤﯽ ﺑﻪ ﻋﻠﺖ ﻧﺎزﮐﺘﺮ ﺑﻮدن رﺷﺘﻪ ﻫﺎي ﮐﻼژﻧﯽ از ﭘﻮﺳﺖ ﺳﻄﺢ ﭘﺸﺘﯽ ﻣﺘﻤﺎﯾﺰ ﺑﻮد

Pelophylax ridibundus is the only species of Pelophylax, distributed in almost all parts of Iran. The present study was carried out in 3 wetland stations of Aleshtar ( Lorestan province) with the aim of studying morphology, morphometric , characteristics of reproductive, karyology and histology of skin, 160 samples were studied. A total of 3 morph were identified. In the analysis of traits, the two sexes did not differ significantly in terms of weight and thigh diameter, while they differed in total length traits. The highest reproductive index was measured in both sexes in spring. In addition the maximal weight for males was 64.12 gr and for females it was 92.9 gr. The chromosomal number of the species was 2n= 26 in the studied regions, in addition to the sex heteromorphy chromosomes. The structure of the skin at all stations was similar and consisted of two layers of epidermis and dermal, in the dermal sponge layer in both sexes, the mucus and granular glands were observed, and the abdominal skin was distinguished by the thinning of collagen fibers from the dorsal skin.