Fish testes histology
WebHistology offers a powerful tool in the study of reproductive health of fishes. It is routinely used for sex verification, identifying stage of development, documenting presence of intersex, tumors, parasites and other abnormalities and quantifying atresia. It can also be used for more subtle changes such as thickness of the vitelline envelope at various … WebHistology of fish testis. The testis of fish is sac-like and folded. Like the oocyte, male gametes (sperm cells) develop and mature through a series of stages. Various types of germ cells can be seen within a testis during its maturity cycle and they are: male germ cells (resting or primary spermatogonium), secondary spermatogonium ...
Fish testes histology
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WebHistology and Cytology Department. The males were distinguished from the females by the examination of the ... Fish body weight RESULTS I- THE TESTES The testis of the catfish was surrounded by tunica albuginea which consisted of dense collagenous connective tissue (Fig. 1) with few fine elastic fibers (Fig. 2) and also contained smooth muscle ...
WebApr 12, 2024 · Scrotum and coverings of the testes Scrotum is a cutaneous (skin) sac that protects the testes. It consists of two layers: most superficially is the skin, and deeper is the dartos fascia.The dartos fascia contains muscle fibers that contract when it is cold, which results in wrinkling of the scrotal skin and brings the testes closer to the body. The result … Webindicate a favourable condition for the fish as it was greater than 2. Histological analysis had no difference in testicular structure between the treatments as compared with the control. Keywords: Testis histology and haematology, Clarias gariepinus, phytochemicals, Moringa oleifera Introduction
Fluorescence in situ hybridization (FISH) is a test that \"maps\" the genetic material in human cells, including specific genes or portions of genes. See more Because a FISH test can detect genetic abnormalities associated with cancer, it's useful for diagnosing some types of the disease. When the type of cancer has previously been diagnosed, a FISH test also may provide … See more During a FISH test using a sample of the patient's tissue, special colored dyes are attached to specific parts of certain chromosomes in order to visualize and count them under a … See more In breast cancer patients, for example, a FISH test on breast cancer tissue removed during a biopsy can show whether the cells have extra copies of the HER2 gene. Cells with extra … See more Because FISH testing is expensive and not widely available, it's not as commonly used as another breast cancer test: ImmunoHistoChemistry … See more WebOct 8, 2024 · The Histology of Fishes. The book is a multi-authored book of 18 chapters comprising the state of the art work of all relevant topics on modern fish histology from 28 authors from ten countries. The topics include Introduction to Histological Techniques, Integument, Fish Skeletal Tissues, Muscular System, Structure and Function of Electric ...
Webnature caused the metal can damage the structure of the seminiferous tubule gonads (testes). The mechanisms by which heavy metals contaminants can affect fish reproduction are several. Some pollutants are known to influence directly the reproductive cycle of the adult fish. Pollutants accumulated in adult fish
WebJul 10, 2024 · Therefore, we developed an ex vivo testis cultivation system which allows evaluating the occurring changes in histology and gene expression. The experimental circulatory flow-through setup described in this work provides the possibility to study the function of the male tilapia gonads on a cellular and transcriptional level for at least 7 days. grand lake st marys state park campingWebJan 1, 2002 · Histology of the gonads is one of the tools used in reproductive studies in fish and its importance has been widely … chinese food in marmora njWebFeb 21, 1995 · The morphology and histology of the catfish testes were studied during the spawning period, finding the seasonal reproductivity in this catfish is less pronounced than in other species and the testes histological structure resembles that of other teleosts. The morphology and histology of the catfish (Parasilurus aristotelis) testes were studied … chinese food in marlboroughWebAbstract. Vertebrate reproduction depends on the function of 2 distinct gametes, sperm and eggs, which develop in 2 different organs, the testis and the ovary. Testes and ovaries are composed of germ cells, supporting cells and interstitial cells. In this review, we describe the origin and the fate of these cell lineages and how they interact ... chinese food in marshfieldWebA proper understanding of tissue and cell structure is of great importance for correct biological inferences, and particularly so in organisms used as research models. Nothobranchius spp. are short-lived freshwater fish species which are promising model organisms for toxicology, evolutionary ecology, aging and regeneration research. … grand lake stream campsWebJul 1, 2009 · Histological and stereological investigations are adequate approaches to a better understanding of the spermatogenic process and testis function in fish [18, 19]. Such an evaluation allows the determination of the dynamics in the numbers of germ cells and Sertoli cells for each type of spermatogenic cyst, and it provides information on the ... chinese food in marlborough mahttp://ecoursesonline.iasri.res.in/mod/page/view.php?id=40337 grand lake st marys ohio real estate for sale