استخوان‌شناسی سر نازک‌ماهی خزری Chondrostoma cyri (Kessler, 1877)

Structure and arrangement of photoreceptors in the retina of big eye kilka, Clupeonella grimmi (Kessler 1877)

The big eye kilka, Clupeonella grimmi, is a marine fish living in depth of 20 to 200 meter of the Caspian Sea. Its eye and retina were processed for histological and SEM studies. Paraffin embedded retina was cut radially and tangentially in 5 ?m thickness and stained with hematoxylin and eosin method. The unstained sections were manipulated for SEM image observations. Tangential retinal sect...

توصیف ساختار استخوانی سیاه ماهی مرکزی (1877 Kessler, Capoeta buhsei) از حوضه دریاچه نمک

گونه سیاه­ ماهی مرکزی Capoeta buhsei یکی از نه گونه جنس سیاه­ماهی در ایران و بومی حوضه دریاچه نمک می ­باشد. با توجه به این­ که در مورد این گونه اطلاعات اندکی در دسترس بوده و بسیاری از ویژگی­ های زیست­ شناختی آن ناشناخته مانده است و هم ­چنین با توجه به اهمیت نقش ساختار اسکلتی در شناخت و...

Effect of age on reproductive performance in female Caspian brown trout (Salmo trutta caspious, Kessler 1877)

Caspian brown trout (Salmo trutta caspius) is one of the economically valuable species in the Caspian Sea. Artificial propagation and production of larvae are the main problems in the early culture of this species. The purpose of this paper is to study the effect of reproductive performance of female broods on opposition reproduction efficiency in Caspian brown trout in the breeding season of 2...

Life history and other biological traits of Capoeta buhsei (Kessler,1877) in the Gharachay River, Saveh

Capoeta buhsei is native species in the Namak Lake basin and biological aspects of life history of this fish in Iranian waters is not very well known. Life history of this fish examined by collecting 92 samples in Gharachay River. Sampling done by using Electroshoker in July and January 2011 and October 2012. The maximum age was found +4 years in female. Sex Ratio (male: female) was 1:0.73, and...

بررسی ساختار جمعیت کیلکای چشم درشت Clupeonella grimmi Kessler, 1877 در سواحل استان مازندران

ساختار استخوانی کولی کورا گونۀ (Alburnus filippii (Kessler, 1877 در حوضۀ جنوبی دریای خزر

Kura bleak, Alburnus filippii, a member of the family Cyprinidae, is found in the rivers of Aras and Sefidrud, and the Anzali lagoon of Iran. The current study was conducted to provide a detailed osteological description of this sp-ecies since there was not adequate information in this regard. In order to attain this goal, 20 specimens were collected from the Ahar Chay River by electrofishing d...