1994-2018 All Rights Reserved. Online Journal of Veterinary Research. You may not store these pages in any form except for your own personal use. All other usage or distribution is illegal under international copyright treaties. Permission to use any of these pages in any other way besides the before mentioned must be gained in writing from the publisher. This article is exclusively copyrighted in its entirety to OJVR publications. This article may be copied once but may not be, reproduced or re-transmitted without the express permission of the editors


OJVRTM

Online Journal of Veterinary Research

 Volume 22 (2): 94-98, 2018.


Effect of season on morphology of hematopoietic tissue in carp (Cyprinus carpio) fish.

 

Amer M. Hussin

 

College of Veterinary Medicine. Baghdad University, Iraq

 

ABSTRACT

 

Hussin AM., Effect of season on morphology of hematopoietic tissue in carp (Cyprinus carpio) fish. Onl J Vet Res., 22 (2): 94-98, 2018. Kidneys were excised from carp during winter (n=8) and summer (n=8) to determine effect of season on morphology of hematopoietic tissue. Samples were fixed in 10% neutral buffered formalin for 2 days for routine histology stained by hematoxylin, Eosin and PAS. Hematopoietic tissue was mainly concentrated in the dorsal kidney but the caudal kidney had smaller areas of hematopoietic cords or cell islands with sinusoidal capillaries. A high number of mitotic figures were noticed especially in summer time indicating active hemopoiesis with several cell lines wherein nuclei appeared large, spherical, euchromatic, with 2-3 apparent nucleoli. Different sized nuclei with nucleoli were present whereas cytoplasm appeared undeveloped or incomplete. A great number of active macrophages were clearly noticed. Large Proerythroblast Rubriblast with loose, lacy chromatin, observable nucleoli, and basophilic blue stained cytoplasm was evident. Megakaryocytes with highly lobulated nucleii were also present. The presence of large number of active macrophages indicates their important role in the process of hemopoiesis. The findings suggest that proliferation of pluripotent stem cells was more evident in fish collected during summer compared with those taken at winter. However, in all tissue samples, we found little cellular differentiation.

 

Key words: Histology, Carp, Hemopoiesis. Summer, winter.


MAIN

FULL-TEXT (SUBSCRIPTION OR PURCHASE ARTICLE)