XƏZƏR ŞİRBİTİNİN EMBRİONAL İNKİŞAF DÖVRÜNÜN SƏCİYYƏVİ XÜSUSİYYƏTLƏRİ
Journal Title: Nature & Science - Year 2021, Vol 3, Issue 1
Abstract
A positive effect in the development of biotechnology for industrial fish breeding is possible only on the basis of knowledge of their biological characteristics at various stages of ontogenesis, among which embryonic development takes the most important place. It is on the results of the incubation of eggs that the further population size of the species in nature and the number of fish farmed in artificial conditions depend. It is known that the temperature regime is a very important ecological factor regulating the spawning of coregonids. However, if the temperature value during the spawning period does not take optimal values, as is often the case when Aral barbel are kept outside their natural range, then the influence of other environmental factors increases. In our opinion, the most significant of these factors is the photoperiod, under the influence of which the nelma producers are able to mature normally at a temperature higher than in the parent reservoir. The study of the embryonic development of nelma was carried out on living material by lateral microscopy.
Authors and Affiliations
Jalə Hidayət qızı Ələsgərova
Keywords
Related Articles
- EP ID EP759437
- DOI 10.36719/2707-1146/06/75-80
- Views 5
- Downloads 0
DƏMİR MÜBADİLƏSİNİN POZULMASI QARACİYƏR SİRROZUNUN YARANMA SƏBƏBLƏRİNDƏN BİRİ KİMİ
Xülasə Qaraciyər sirrozu sağlam qaraciyər toxumasının tədricən funksiyasının pozulması ilə xarakterizə olunan xroniki qaraciyər xəstəliyidir. Bir neçə amil qaraciyər sirrozunun inkişafına səbəb olsa da, dəmir mübadilə...
CHRONIC DISEASES OF THE VENOUS SYSTEM – AS MORPHOLOGICAL AND FUNCTIONAL DISTURBANCE OF THE VENOUS SYSTEM
Abstract Our goal in this study is to provide quantitative and qualitative data for proper treatment planning in patients with multiple cutaneous computerized tomographic angiography with peripheral artery disease, to...
Evaluation of the Antioxidant Activity of Rosa canina Plant Fruit
Three types of Rosa canina plant extracts were prepared. The antioxidant activity of the first prepared solution was measured using a UV spectrophotometer in the bioengineering laboratory. The resulting graph shows that...
ORAL HEALTH CONDITIONS OF WOMEN DURING PREGNANCY
Abstract Pregnancy is a period in which many hormonal changes occur in the woman's body and, accordingly, many local and systemic changes occur. Increased hormonal secretion and growth of the fetus trigger some system...
Plasma Chemical Synthesis Research
Abstract When using uranium - 238, thorium - 232 and plutonium - 239 isotopes, there is no need for expensive isotopic enrichment, and the use cycle of such nuclear fuel can be extended to 10-15 years. At the same tim...