Abstract
Ability for hematopoiesis of spleen, intestinal mucosa, and liver is investigated for early ontogenesis of common bream Abramis brama L., a species of bony fish widespread in the Russian waters, including Astrakhan region. The samples (24 ind.) were collected in the fish farm in Kamyzyaksky district of the region in middle May 2018, after hatching. Histological analysis was made by conventional methods. Both spleen, liver, and intestinal mucosa were formed in the first days after hatching. In the spleen, such signs of hematopoiesis as dispersed new developing blood particles were found just in the first day. In the intestinal mucosa, the first foci of hematopoiesis appeared in the nineteenth day. These organs were formed completely by the end of larval development, and the most intense level of hematopoiesis was observed in that time, with forming of blood cells of all rows of hematopoiesis. On the contrary, no signs of hematopoiesis were found in the liver throughout the larval and juvenile periods.
Highlights
Ability for hematopoiesis of spleen, intestinal mucosa, and liver is investigated for early ontogenesis of common bream Abramis brama L., a species of bony fish widespread in the Russian waters, including Astrakhan region
Liver, and intestinal mucosa were formed in the first days after hatching
The first foci of hematopoiesis appeared in the nineteenth day
Summary
ФОРМИРОВАНИЕ НЕКОТОРЫХ ОРГАНОВ КРОВЕТВОРЕНИЯ ПРЕДЛИЧИНОК, ЛИЧИНОК И МАЛЬКОВ ЛЕЩА ОБЫКНОВЕННОГО (ABRAMIS BRAMA L.). К числу органов кроветворения рыб относят селезенку, слизистую оболочку кишечника и печень. Установлено, что селезенка, печень и слизистая оболочка кишечника леща формируются с первых дней после вылупления из икринки. Селезенка и слизистая оболочка кишечника являются универсальными органами кроветворения. Ключевые слова: кроветворение, эритроциты, гранулоциты, агранулоциты, селезенка, печень, слизистая оболочка кишечника. Histological analysis was made by conventional methods Both spleen, liver, and intestinal mucosa were formed in the first days after hatching. Liver, and intestinal mucosa were formed in the first days after hatching In the spleen, such signs of hematopoiesis as dispersed new developing blood particles were found just in the first day. Цель работы — описать формирование и функционирование органов, осуществляющих кроветворную, пищеварительную и другие функции в раннем онтогенезе на примере личинок и мальков леща обыкновенного, поэтапно изученных на разных стадиях развития
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