Histological and ultrastructural study of Zona Radiata in oocyte of common carp Cyprinus carpio (Linnaeus 1758)

Shabanipour, Nader; Hossayni, S.N.

doi:10.1016/j.micron.2010.04.012

Cited by 10 publications

(5 citation statements)

References 23 publications

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“…The beginning of zona radiata formation at the end of primary growth, as well as its aspects throughout development, follows a similar pattern to that observed in other fish species (França et al , 2010; Shabanipour & Hossayni, 2010; Ma et al , 2012). In L. araguaiae , the zona radiata was also observed as a single layer of electron-dense material and, posteriorly in vitellogenesis, as a tri-laminar structure with pores and microvilli presence, responsible for substances transport.…”

Section: Discussionsupporting

confidence: 81%

Oogenesis inLaetacara araguaiae(Ottoni and Costa, 2009) (Labriformes: Cichlidae)

Santos-Silva

Siqueira‐Silva

Ninhaus‐Silveira

et al. 2015

Zygote

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We aimed to analyze the oogenesis of adult females of the cichlid fish Laetacara araguaiae. The specimens' gonads were removed and processed for light and transmission electron microscopy. Oogenesis in L. araguaiae showed the following characteristics: a germinal epithelium with three types of oogonia (A-undifferentiated, A-differentiated and B-oogonia), oocytes at meiotic prophase stage and ovarian follicle formation. Oocytes showing primary growth with pre-vitellogenic and cortical alveolus were observed. Similar to data for other cichlids, oocytes in secondary growth or vitellogenesis were characterized by the initial deposition of yolk microgranules. The event that characterizes the maturation stage is nucleolus migration, also called the germinal vesicle, to the oocyte periphery in the direction of the micropyle. The follicular complex undergoes several changes throughout the oocyte stages. To the best of our knowledge this study is the first to describe L. araguaiae oogenesis. Moreover, this study is the first step to better understand the reproductive biology of this species, which shows great potential for use as an ornamental fish.

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Section: Discussionsupporting

confidence: 81%

Oogenesis inLaetacara araguaiae(Ottoni and Costa, 2009) (Labriformes: Cichlidae)

Santos-Silva

Siqueira‐Silva

Ninhaus‐Silveira

et al. 2015

Zygote

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“…The canals are engaged in the transportation of vitellogenins to the oocyte. After the completion of vitellogenesis, in large secondary growth oocytes they become blind-ended in order to protect the oocyte from contamination in water (Shabanipour & Hossayni, 2010).…”

Section: Discussionmentioning

confidence: 99%

Asymmetry in the cytoplasm of oocytes of largescale yellowfish Labeobarbus marequensis Smith 1841 (Teleostei: Cypriniformes: Cyprinidae)

Żelazowska

Halajian

2020

Journal of Morphology

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The ovaries of the largescale yellowfish, Labeobarbus marequensis (Teleostei: Cypriniformes: Cyprinidae), are made up of the germinal epithelium, nests of late chromatin nucleolus stage oocytes, and ovarian follicles. Each follicle is composed of a single oocyte, which is surrounded by somatic follicular cells and a basal lamina covered by thecal cells. We describe polarization and ultrastructure of oocytes during the primary growth stage. The oocyte nucleus contains lampbrush chromosomes, nuclear bodies and fibrillar material in which multiple nucleoli arise. Nuage aggregations composed of material of a nuclear origin are present in the perinuclear cytoplasm. The Balbiani body (Bb) contains aggregations of nuage, rough endoplasmic reticulum, individual mitochondria and complexes of mitochondria with nuage (cement). Some mitochondria in the Bb come into close contact with endoplasmic reticulum cisternae and vesicles that contain granular material. At the start of primary growth, the Bb is present in the cytoplasm close to the nucleus. Next, it expands towards the oocyte plasma membrane. In these oocytes, a spherical structure, the so-called yolk nucleus, arises in the Bb. It consists of granular nuage in which mitochondria and vesicles containing granular material are immersed. Later, the Bb becomes fragmented and a fully grown yolk nucleus is present in the vegetal region. It contains numerous threads composed of granular nuage, mitochondria, lysosomelike organelles and autophagosomes. We discuss the formation of autophagosomes in the cytoplasm of primary growth oocytes. During the final step of primary growth, the cortical alveoli arise in the cytoplasm and are distributed evenly. The eggshell is deposited on the external surface of the oocyte plasma membrane and is made up of two egg envelopes that are pierced by numerous pore canals. The external egg envelope is covered in protuberances. During primary growth no lipid droplets are synthesized or stored in the oocytes.

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“…3c). These oocytes, which were designated as stage III, also contained a granular acidophilic yolk containing many yolk granules (Morris Jr. et al 2011, Quintana et al 2004) at the nuclear periphery and had a thick zona radiata (i.e., surrounding layers of oocytes), which is generally observed during vitellogenesis (Jiang et al 2010, Shabanipour andHossayni 2010). The stage III oocytes ranged from 769.4 to 2315.3 µm in diameter, averaging 1271.8 14.7 µm.…”

Section: Histological Features Of Kumgang Fat Minnow Oocytes By Seasomentioning

confidence: 99%

Effects of Water Temperature on Gonad Development in the Cold-Water Fish, Kumgang Fat Minnow <i>Rhynchocypris kumgangensis</i>

Kong

Ghil

2016

CYTOLOGIA

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Summary Water temperature is one of the most important factors in the survival of aquatic organisms. We investigated the effects of increased water temperature on the physiology of Kumgang fat minnow Rhynchocypris kumgangensis, a small cold-water species of freshwater fish that is endemic to Korea. We examined how organ indices and oocyte histology differed by season and exposure to high water temperatures. Fish were collected from streams in Korea during three different seasons, maintained at the same temperatures at which they were collected for three weeks, and then exposed to either control temperatures reflecting the same conditions from which they were collected (15.0 C, August; 7.8 C, November; and 12.3 C, April) or experimental temperatures that were increased a total of 7 C over seven days (to 22.0 C, August; 14.8 C, November; and 19.3 C, April) and maintained at the final temperature for an additional three days. Among the studied organ indices, the gonadosomatic indexes (GSI) in both sexes differed by season, and were significantly decreased by exposure to increased water temperatures during the germ-cell-developing season. The histological features of oocytes also differed by season, and exposure to increased water temperatures during the relevant season markedly attenuated oocyte development. These findings highlight sensitivity of both GSI and oocyte histology on water temperature change, and the possible negative effects of high water temperature on reproduction in Kumgang fat minnow.

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Histological and ultrastructural study of Zona Radiata in oocyte of common carp Cyprinus carpio (Linnaeus 1758)

Cited by 10 publications

References 23 publications

Oogenesis inLaetacara araguaiae(Ottoni and Costa, 2009) (Labriformes: Cichlidae)

Oogenesis inLaetacara araguaiae(Ottoni and Costa, 2009) (Labriformes: Cichlidae)

Asymmetry in the cytoplasm of oocytes of largescale yellowfish Labeobarbus marequensis Smith 1841 (Teleostei: Cypriniformes: Cyprinidae)

Effects of Water Temperature on Gonad Development in the Cold-Water Fish, Kumgang Fat Minnow <i>Rhynchocypris kumgangensis</i>

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