scholarly journals First Karyological Analysis of an Endemic Fish, Isfahan Tooth-carp,Aphanius isfahanensis(Actinopterygii: Cyprinodontidae) from Iran

2008 ◽  
Vol 33 (1) ◽  
pp. 73-76
Author(s):  
H. R. Esmaeili ◽  
M. Ebrahimi ◽  
A. Teimory ◽  
T. H. Ansary
Keyword(s):  
Karyological Analysis ◽  
Endemic Fish

scholarly journals Karyological analysis of bitter gourd (Momordica charantia L., Cucurbitaceae) from Southeast Asian countries

2020 ◽  
Vol 18 (3) ◽  
pp. 200-200
Author(s):  
Nadia Kausar ◽  
Zubaida Yousaf ◽  
Afifa Younas ◽  
Hafiza Sadia Ahmed ◽  
Madiha Rashid ◽  
...  
Keyword(s):  
Southeast Asian ◽  
Momordica Charantia ◽  
Bitter Gourd ◽  
Asian Countries ◽  
Karyological Analysis ◽  
Southeast Asian Countries

On the role of germ cells in planarian regeneration

Development ◽  
1980 ◽  
Vol 55 (1) ◽  
pp. 53-63
Author(s):  
V. Gremigni ◽  
C. Miceli ◽  
I. Puccinelli
Keyword(s):  
Chromosome Number ◽  
Germ Cells ◽  
Primordial Germ Cells ◽  
Karyological Analysis ◽  
Blastema Formation ◽  
Planarian Regeneration ◽  
Somatic Tissues ◽  
Caudal Area ◽  
Complete Regeneration

Specimens from a polyploid biotype of Dugesia lugubris s.l. were used to clarify the role and fate of germ cells during planarian regeneration. These specimens provide a useful karyological marker because embryonic and somatic cells (3n = 12) can be easily distinguished from male (2n = 8) and female (6n = 24) germ cells by their chromosome number. We succeed in demonstrating how primordial germ cells participate in blastema formation and take part in rebuilding somatic tissues. This evidence was obtained by cutting each planarian specimen twice at appropriate levels. The first aimed to induce primordial germ cells to migrate to the wound. The second cut was performed after complete regeneration and aimed to obtain a blastema from a cephalic or caudal area devoid of gonads. A karyological analysis of mitotic cells present in each blastema obtained after the second cut provided evidence that cells, originally belonging to the germ lines, are still present in somatic tissues even months after complete regeneration. The role of primordial germ cells in planarian regeneration was finally discussed in relation to the phenomenon of metaplasia or transdifferentiation.

EFFECTIVENESS Daphnia sp. WHICH IS PELET FEEDING TO THE GROWTH OF SEMAH’S LARVAE Tor douronensis (Valenciennes, 1842)

2020 ◽  
Vol 5 (2) ◽  
pp. 23-27
Author(s):  
Dina Tri Madya Ningsih ◽  
Siti Hudaidah ◽  
Mas Tri Djoko Sunarno
Keyword(s):  
Survival Rate ◽  
Fish Larvae ◽  
Weight Growth ◽  
Randomized Design ◽  
Test Parameters ◽  
Absolute Growth ◽  
Absolute Length ◽  
Effective Doses ◽  
Endemic Fish ◽  
Completely Randomized Design

The semah fish (Tor douronensis) is an Indonesian endemic fish that has a long growth, which takes 4 years to grow from larvae to broodstock. This study aims know of Daphnia sp. pelet fed with effective doses to increase the growth of semah’s fish larvae. The study was conducted from March 25 to April 13, 2020 at the Instalasi Riset Plasma Nutfah, Cijeruk, Bogor, West Java. The experimental design used completely randomized design (CRD) 4 treatments and 3 replications, namely treatment A (Daphnia sp.+pelet feed 0 gr/ L), treatment B (Daphnia sp.+ pelet feed 1 gr / L), treatment C (Daphnia sp. + pelet feed 2 gr / L), treatment D (Daphnia sp. + pelet feed 3 gr / L). The larvae of 9 days in age were randomly stocked into 12 aquariums measuring 60x30x35 cm with a density of 50 fish/aquarium and fed in the form of Daphnia sp. enriched pelet feed according to the treatment of 50 ind/larvae by giving 3 times a day which is maintained for 20 days. The test parameters measured are absolute growth in length and weight, survival rate, and water quality. Based on the results of statistical analysis (Anova), the results showed that the treatment D gave the highest influence on the growth of semah’s fish larvae (P <0.05) with an absolute weight growth value of 85,3 mg, absolute length growth of 10.6 mm, and survival rate 99.33%.

Karyological analysis of the sea cicada Blepharipoda liberate Shen from the Rizhao intertidal zone, China

2018 ◽  
Vol 37 (1) ◽  
pp. 169-175
Author(s):  
Liqing Zhou ◽  
Xuemei Wang ◽  
Biao Wu ◽  
Xiujun Sun ◽  
Qing Zhao ◽  
...  
Keyword(s):  
Intertidal Zone ◽  
Karyological Analysis

scholarly journals Karyological Analysis of Endemic Five Muscari Taxa

CYTOLOGIA ◽  
2020 ◽  
Vol 85 (4) ◽  
pp. 289-294
Author(s):  
Meryem Bozkurt
Keyword(s):  
Karyological Analysis

scholarly journals New Transbaikalian finds of the Muja Valley vole (Rodentia: Cricetidae: Alexandromys mujanensis)

2018 ◽  
Vol 322 (3) ◽  
pp. 357-384 ◽  
Keyword(s):  
Detailed Analysis ◽  
Shape Analysis ◽  
Nature Reserve ◽  
Molecular Genetic ◽  
Gene Tree ◽  
Cytb Gene ◽  
Experimental Hybridization ◽  
Karyological Analysis ◽  
Far Eastern ◽  
Different Parts

The Muja vole, Alexandromys mujanensis Orlov et Kovalskaya, 1975, was described in the result of the karyological analysis and experimental hybridization. Since the first description the Muja vole has been considered to inhabit only the Muja Valley. Some Far Eastern voles were collected in 2013 and 2014 from the Dzherginsky Nature Reserve of the Barguzin Valley (Dzhirga sample), and the Baunt Lake vicinity (Baunt sample) (Transbaikalia, Buryatia). The species from these geographic localities were identified by use of karyotypic and cytb-gene analyses. On the cytb-gene tree these voles are in the same clade with Muja voles from the type locality (the Muja Valley). The karyotype of the vole from Barguzin Valley corresponds to that previously described for the Muja voles (Meyer et al. 1996). According to the result of the shape analysis of m1 occlusal surface the sample from the Baunt Valley includes two species – A. mujanensis and A. maximowiczii. Unless more detailed analysis of the material from the different parts of the Baunt Valley is carried out, we suppose it to be inhabited by three species – A. maximowiczii, A. mujanensis, and according to the data from literature – A. oeconomus. So far as some molecular-genetic differences between Muja voles from the Dzhirga and Baunt Lake vicinity were found, the experiments on hybridization between them were set. The F1 hybridization between them were fertile. A. mujanensis taxonomic position and terms of its origination are discussed.

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