scholarly journals Ovary maturation stages and oocyte features in three species of the neotropical fish Hemiodus (Müller, 1842)

2003 ◽  
Vol 46 (3) ◽  
pp. 433-441 ◽  
Author(s):  
Claudia Angelica da Silva Brandão ◽  
Maria de Fátima Moraes Valentim ◽  
Érica Pellegrini Caramaschi
Keyword(s):  
Microscopic Analysis ◽  
Oocyte Development ◽  
Ovarian Maturation ◽  
Neotropical Fish ◽  
Zona Radiata ◽  
Large Size ◽  
Maturation Stages ◽  
Ovary Maturation

Macro- and microscopic ovarian features of Hemiodus microlepis, H. ternetzi and H. unimaculatus were analyzed. Based on these features we proposed an ovarian maturation scale. The nine stages of the preliminary macroscopic fieldwork scale were reduced to five after microscopic analysis of ovaries. The microscopic analysis indicated a group-synchronous oocyte development common to the three species that were characterized as iteroparous synchronous spawners with a total spawning type. The remarkable thickness of the zona radiata layer and the large size of vitellogenic oocytes of Hemiodus ternetzi distinguished this species from the others.

scholarly journals Ovary maturation stages histology and follicles diameter of Melanotaenia boesemani rainbowfish ovary from district of North Ayamaru, Maybrat Regency, west Papua

2015 ◽  
Vol 32 (03) ◽  
pp. 157-164
Author(s):  
I. Hismayasari ◽  
S. Rahayu ◽  
A. Marhendra
Keyword(s):  
Paraffin Section ◽  
Mature Oocyte ◽  
Oocyte Development ◽  
Diameter Distribution ◽  
Maturation Stage ◽  
Multiple Spawner ◽  
West Papua ◽  
Maturation Stages ◽  
Hematoxylin Eosin ◽  
Ovary Maturation

Abstract Introduction: This research aim is to described ovary maturation stages histologically related with oocytes development in ovary of boesemani rainbowfish M. boesemani from North Ayamaru district, Maybrat Regency, West Papua. Materials and Methods: A histologycal analysis of ovari maturation stage (OMS) of the Boesemani rainbowfish Melanotaenia boesemani performed on 93 ovaries. Fresh ovaries were fixed in 10% Neutral Buffered Formalin (NBF) and embedded in paraffin. Section of about 5-6 pm thickness were cut and stained with Hematoxylin eosin (HE). Results: Histologycal analysis of rainbowfish M. boesemani ovaries based on oocyte development consist of 8 oocyte types not included atresia follicle i.e oogonia, early perinuclear oocyte, late perinuclear oocyte, cortical alveoli oocyte, early vitelogenic oocyte, mid-vitelogenic oocyte, late vitelogenic oocyte, and mature oocyte. The chorion and follicle layers begins to form at OMS II, keeps growing at OMS III, and was apparent at OMS IV. The chorion and follicle layers at OMS V ovaries were disintegrated. Conclusion: Based on ovary histology, oocyte proportion, and follicles diameter distribution can be concluded that the rainbowish M. boesemani classiied as multiple spawner.

Ovarian maturation stages of the mud crab Scylla serrata

2007 ◽  
Vol 38 (14) ◽  
pp. 1434-1441 ◽  
Author(s):  
Emilia T Quinitio ◽  
Jennette de Pedro ◽  
Fe Dolores Parado-Estepa
Keyword(s):  
Scylla Serrata ◽  
Ovarian Maturation ◽  
Mud Crab ◽  
Maturation Stages

scholarly journals Effect of Temperature on Ovarian Maturation Stages and Embryonic Development of Mud Spiny Lobster, Panulirus polyphagus

2013 ◽  
Vol 9 (1) ◽  
pp. 1-13 ◽  
Author(s):  
M. Ikhwanuddi ◽  
S.N. Fatihah ◽  
A.H. Nurfaseha ◽  
M. Fathiah ◽  
M. Effenddy ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Spiny Lobster ◽  
Effect Of Temperature ◽  
Ovarian Maturation ◽  
Maturation Stages

scholarly journals Identification of the stages of ovarian maturation of the Argentine hake Merluccius hubbsi Marini, 1933 (Teleostei: Merlucciidae): advantages and disadvantages of the use of the macroscopic and microscopic scales

2006 ◽  
Vol 4 (3) ◽  
pp. 329-337 ◽  
Author(s):  
Renato M. Honj ◽  
André M. Vaz-dos-Santos ◽  
Carmen Lúcia D. B. Rossi-Wongtschowsk
Keyword(s):  
Cross Sections ◽  
Morphological Characteristics ◽  
Oocyte Development ◽  
Ovarian Maturation ◽  
General Group ◽  
Fishery Resource ◽  
Advantages And Disadvantages ◽  
Synchronous Development ◽  
Merluccius Hubbsi ◽  
Argentine Hake

The Argentine hake Merluccius hubbsi is a demersal-pelagic species on which few studies have been undertaken, despite its importance for the fisheries of the South-Southeastern Brazilian region, . The species is the most important commercial fishery resource in Uruguay and Argentina, where several studies have permitted the proper monitoring of the species. The ovarian maturation of the Argentine hake is analysed in this study. A scale of maturation is presented in the light of the oocyte development and the use of macro and microscopic scales of ovarian maturation are compared. It was detected that the oocyte types and derived structures present in the ovaries are similar to those already described both for the species and for teleosts in general; group synchronous development and multiple spawning are typical. The identification of ovarian maturation based only on external morphological characteristics of the gonads presents many errors, mainly in the characterization of the stages of maturation, which makes imperative the parallel analysis of the oocyte development, undertaken through histological ovarian cross-sections.

scholarly journals Descrição alimentar e estágio de maturação de Crassostrea brasiliana comercializadas no mercado municipal de Paranaguá, Paraná, Brasil

2016 ◽  
Vol 19 (2) ◽  
Author(s):  
Susete Wambier Christo ◽  
Celene Silva Ivachuk ◽  
Franccielli Veroneze ◽  
Augusto Luiz Ferreira Jr ◽  
Theresinha Monteiro Absher
Keyword(s):  
Microscopic Analysis ◽  
Phytoplankton Species ◽  
Filter Feeder ◽  
Gonadal Maturation ◽  
Maturation Stages ◽  
Content Identification ◽  
Wet Weight ◽  
Macroscopic Examination ◽  
Great Portion

Crasssotrea brasiliana (Lamark, 1819) is an epibiont filter feeder bivalve of fast growth and fast gonadal restructuring that feeds by filtration of microalgae, these characteristics are mainly related to the amount and quality of the phytoplankton filtered by the animal. In Paraná coast several sites of cultivation of the species can be found in Paranaguá Estuarine Complex (PEC) and Guaratuba Bay. Therefore, this work had as objectives to evaluate the size and the phytoplankton species ingested by adults of the oyster C. brasiliana and to describe its reproductive characteristics (index of meat revenue and stages of gonadal maturation). Oysters were acquired monthly in the Municipal Market of Paranaguá from cultivation in the PEC. The oysters were measured and length values (L), height (H) and gross weight (GW) obtained. Gonadal maturation stages were evaluated through the macroscopic examination of the gonads and revenue (R) through the wet weight of meat. The digestive gland was removed for the microscopic analysis of the stomach content (identification and measurement of the phytoplankton). The highest value of the R average (12,79%) was in July 2007, when a great portion of the population presented full gonads, however the  predominance of individuals with full  gonads (partially full and full) occurred in periods of warmer waters. The main microalgae genera found were: Diatoms - Gyrosigma Hassall, 1845; Cyclotella (Kützing) Brébisson, 1838; Coscinodiscus Ratray, 1890 and Pleurosigma W. Smith, 1852; Dinoflagellates - Noctiluca  Suriray, 1836 and  Ceratium Schrank, 1793 with size of phytoplankton ingested varying from 5 to 260 µm.

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