Ovarian development in the Amazonian red discus, Symphysodon discus Heckel (Osteichthyes: Cichlidae)

Chellappa, Sathyabama; Câmara, M.R.; Verani, José Roberto

doi:10.1590/s1519-69842005000400007

Cited by 29 publications

(29 citation statements)

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“…Several studies have shown differences between the ovarian classification of fish with external fertilization, such as Symphysodon discus (Heckel 1840), Oligosarcus hepsetus (Cuvier 1829), and Iheringichthys labrosus (Lütken 1874) (Chellappa et al 2005, Santos et al 2005, and those presenting internal fertilization, such as P. vivipara. This finding was confirmed in the present study, since the observation of embryos and larvae at different stages of development in this fish species was an important factor in our analysis due to the occurrence of additional stages of ovarian maturation.…”

Section: Discussionmentioning

confidence: 99%

“…To describe these stages and macroscopically classify the ovarian development of P. vivipara we used the ovarian parameters described by Brandão et al (2003) and Chellappa et al (2005).…”

Section: Methodsmentioning

confidence: 99%

“…Studies on the gonadal development are important to fully understand the reproductive cycle, size at gonadal maturity of females, duration of spawning season, and fertility, as well as to evaluate the general biology of the species in association with its application in order to preserve fish biodiversity (West 1990, Santos et al 2004, Chellappa et al 2005. Moreover, these studies provide basic information to understand different reproductive strategies, systematic and phylogenetic patterns to provide support for aquaculture, and researches on ecotoxicology.…”

Section: Introductionmentioning

confidence: 99%

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Analyses of the development and glycoproteins present in the ovarian follicles of Poecilia vivipara (Cyprinodontiformes, Poeciliidae)

Rocha

Yamada

Costa³

et al. 2011

Pesq. Vet. Bras.

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RESUMO.-[Análise do desenvolvimento e das glicoproteínas presentes nos folículos ovarianos de Poecilia vivipara (Cyprinodontiformes, Poeciliidae).] Os apectos morfofuncionais da oogênese do Poecilia vivipara foram estudados nesse trabalho. Esse estudo contribuiu para o aprimoramento das informações sobre a biologia reprodutiva e do desenvolvimento de espécies com fecundação interna, em especial aquelas pertencentes à família Poecilidae. Para tanto, caracterizou-se os estágios de maturação gonadal e desenvolvimento folicular através de análises mesoscópicas, histológicas, histoquímicas e citoquímicas com lectinas. O estudo mesoscópico permitiu a classificação do desenvolvimento ovariano em seis estágios: imaturo, em maturação I, em maturação II, maturo I, maturo II e pós-desova. O exame microscópico dos ovários permitiu a identificação dos oócitos pré-vitelogênicos (OPVt) e vitelogênicos (OVt). Na fase pré-vitelogênese, verificou-se os oócitos tipo I (OI) e tipo II (OII), e na fase vitelogênese, foram encontrados oócitos tipo III (OIII), tipo IV (OIV) e os The morphofunctional aspects of oogenesis of Poecilia vivipara were studied aiming to understand the reproductive biology and development of species with internal fertilization, particularly those belonging to the family Poeciliidae. The stages of gonadal maturation and follicular development were characterized using mesoscopic, histological, histochemical, and lectin cytochemical analyses. Through mesoscopic evaluation the ovarian development was classified in six phases of development: immature, in maturation I, in maturation II, mature I, mature II, and post-spawn. Based on microscopic examination of the ovaries, we identified the presence of oocytes types I and II during the previtellogenic phase and types III, IV, and V during the vitellogenic phase. As oogenesis proceeded the oocyte cytosol increased in volume and presented increased cytoplasmic granule accumulation, characterizing vitellogenesis. The zona radiata (ZR) increased in thickness and complexity, and the follicular epithelium, which was initially thin and consisting of pavimentous cells, in type III oocytes exhibited cubic simple cells. The histochemical and cytochemical analyses revealed alterations in the composition of the molecular structures that form the ovarian follicle throughout the gonadal development. Our study demonstrated differences in the female reproductive system among fish species with internal and external fertilization and we suggest P. vivipara can be used as experimental model to test environmental toxicity. pós-fertilização (OV). Com o avanço da oogênese, o citosol dos oócitos aumentaram em volume, com crescente acúmulo de grânulos citoplasmáticos, caracterizando a vitelogênese. Além disso, a zona radiata (ZR) aumentou de espessura e alterou suas características histocitoquímicas, e o epitélio folicular (EF), inicialmente delgado e constituído por células pavimentosas, nos FOs na fase III tornaram-se cúbico simples. As análises histoquímicas e citoquímicas permitiram diag...

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Section: Discussionmentioning

confidence: 99%

“…To describe these stages and macroscopically classify the ovarian development of P. vivipara we used the ovarian parameters described by Brandão et al (2003) and Chellappa et al (2005).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analyses of the development and glycoproteins present in the ovarian follicles of Poecilia vivipara (Cyprinodontiformes, Poeciliidae)

Rocha

Yamada

Costa³

et al. 2011

Pesq. Vet. Bras.

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“…There are known to have been introductions of C. monoculus to Rio Grande do Norte (CÂMARA et al, 2002;CHELLAPPA et al, 2003), of C. kelberi, in the Lobo reservoir, in Albufeira (SOUZA et al, 2008), and C. piquiti in the Paraíba river (VIEIRA et al, 2009). Those species are highly appreciated by sport-fishing enthusiasts (GOMIERO et al, 2008), which is the main reason for these introductions.…”

mentioning

confidence: 99%

“…The few papers published about reproduction for the species were developed with peacock bass introduced into the southern, southeastern and northeastern regions in Brazil (CÂMARA et al, 2002;CHELLAPPA et al, 2003;BRAGA, 2004 Biometric data were collected for total weight (g), total length (cm) and weight of gonads (g). The fish were dissected through an incision in the abdomen for sex identification and removal of the gonads, which were fixed in 10% formaldehyde.…”

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confidence: 99%

Gonodal development of the peacock bass <i> Cichla monoculus</i> (Perciformes: Cichlidae) in the Middle Solimões

Souza¹,

Silva²,

Valladares³

et al. 2011

Uakari

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The common peacock bass, Cichla monoculus Spix; Agassiz, 1831, is a Neotropical cichlid native to the Amazon basin. Although it is highly valued for the quality of its flesh and intensely exploited by commercial fishing, representing the fourth most sold fish along the middle Solimões River in terms of landing statistics, little is known of the reproductive characteristics of this species in its natural habitat. The objective of this work was to reveal some morphological and histological aspects of gonadal development for this species. We also wanted to verify the gonadosomatic relation and allometric condition factor, and assess their use as reproductive indicators. Finally, we intended to reveal the fecundity and spawning type for some individuals of this species living in natural environments. In this study 73 females and 72 males of C. monoculus were utilized, from whom data were collected on total weight and total individual length. The gonads were later removed, weighed and macroscopically analyzed. To confirm this analysis tissue slices were taken from tissue cuts from 41 of the gonads. Based on the results of macroscopic and histological analyses five stages of development for females and four for males were identified. The ovaries were classified as immature, maturing, mature, spawned and at rest. The testicles were classified as immature, maturing, mature and spermiated. The females were found to be larger than the males, but the males were heavier. The gonadosomatic relation and the allometric condition factor were not considered good indicators of the reproductive status for this species. The spawning observed was of the total type, presenting an absolute average fecundity of 8,624 mature oocytes. Diameters of the vitellogenic oocytes varied from 1,210 μm to 3,000 μm. The total spawn, which is accompanied by oocytes with large diameters that have a large reserve of vitellus, is a factor that may favor the reproductive success of C. monoculus on the middle Solimões. RESUMOO tucunaré comum, Cichla monoculus Spix; Agassiz, 1831, é um ciclídeo neotropical originário da bacia Amazônica. Embora seja muito apreciado pela qualidade de sua carne, e intensamente explorado na pesca comercial, representando a quarta espécie mais comercializada no médio Solimões nas estatísticas de desembarque, pouco se sabe das características reprodutivas desta espécie em seu habitat natural. O objetivo deste trabalho foi revelar alguns aspectos morfológicos e histológicos do desenvolvimento gonadal desta espécie. Também objetivamos verificar a relação gonadossomática e fator de condição alométrico, e avaliar o seu uso como indicadores reprodutivos. Finalmente, também objetivamos revelar a fecundidade e o tipo de desova de alguns indivíduos desta espécie vivendo em ambientes naturais. Neste estudo foram utilizadas 73 fêmeas e 72 machos de C. monoculus dos quais foram coletados dados de peso total e comprimento total individual. As gônadas foram posteriormente removidas, pesadas e analisadas macroscopicamente. Para confi...

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Effect of Seasonality for Optimization of Germ Cell Extraction from Mature Blue Catfish

et al. 2023

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Xenogenesis is an innovative tool for hybrid catfish (female Channel Catfish Ictalurus punctatus × male Blue Catfish I. furcatus) seed production, accomplished by transplanting undifferentiated germ cells derived from a donor diploid fish into a sterile recipient, which then enables recipient fish to produce donor‐derived gametes. There is potential to collect donor‐derived germ cells from mature fish during certain times of the year depending upon seasonal temperature and serum sex steroid hormonal fluctuations. The objective of this study was to evaluate seasonal variations in germ cell counts and serum sex steroid hormonal profiles in mature Blue Catfish. Mature fish were collected monthly over the full annual cycle to quantify the number of live germ cells (spermatogonia A, oogonia), viability of germ cells, and levels of serum sex steroid hormones, including testosterone, 11‐ketotestosterone, and 17β estradiol. Extracted spermatogonia A counts were highest from April to June, whereas a significant decline was detected from July to November. Extracted live oogonia counts were highest in April and gradually decreased to zero over the months of May to August. Seasonal variations in serum testosterone, 11‐ketotestosterone, and 17β estradiol followed a similar pattern as the live spermatogonia A and oogonia counts. Even though spermatogonia A counts were relatively lower in mature than in immature Blue Catfish males, extracting spermatogonia A from mature Blue Catfish males during April to June provides an added advantage to the process of artificial fertilization, as it is required to sacrifice these fish to collect sperm.

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Ovarian development in the Amazonian red discus, Symphysodon discus Heckel (Osteichthyes: Cichlidae)

Cited by 29 publications

References 4 publications

Analyses of the development and glycoproteins present in the ovarian follicles of Poecilia vivipara (Cyprinodontiformes, Poeciliidae)

Analyses of the development and glycoproteins present in the ovarian follicles of Poecilia vivipara (Cyprinodontiformes, Poeciliidae)

Gonodal development of the peacock bass <i> Cichla monoculus</i> (Perciformes: Cichlidae) in the Middle Solimões

Effect of Seasonality for Optimization of Germ Cell Extraction from Mature Blue Catfish

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