Ovarian follicular atresia in two teleost species: a histological and ultrastructural study

Miranda, Alex; Bazzoli, Nilo; Rizzo, Elizete; Sato, Yoshimi

doi:10.1054/tice.1999.0045

Cited by 105 publications

(108 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Guraya (1986) and as recorded in this study, even though atresic follicles may be formed at any stage of the reproductive cycle and are more frequent in regression ovaries, non-ovulated vitellogenic oocytes have begun the process of absorption or atresia. The morphological event occurred when atresic follicles of B. orthotaenia were being formed and are compatible with the reports from Miranda et al (1999). The wall of the seminiferous tubules of B. orthotaenia was made up of cysts of germ cells at different stages of spermatogenesis and in each cyst, delimited by cytoplasmatic elongations of Sertoli cells, germ cells were at the same development stage, a common pattern in most teleosts (Grier, 1981;Lo Nostro et al, 2003).…”

Section: Discussionsupporting

confidence: 87%

Gametogenesis and reproduction of the matrinxã Brycon orthotaenia (Günther, 1864) (Pisces: Characidae) in the São Francisco river, Minas Gerais, Brazil

2006

Self Cite

View full text Add to dashboard Cite

The gametogenesis and reproduction of the matrinxã, Brycon orthotaenia in the São Francisco river, Pirapora Region, Minas Gerais, were studied from December, 1998 to November, 1999. The matrinxã B. orthotaenia is an endemic species in the São Francisco river basin in Brazil and important for commercial fishing. The size of the 1 st gonadal maturation, indicated by the total length of the smallest spent males and spawned female, was 32.0 and 40.5 cm respectively. Reproduction occurred from October to January, when high frequencies of females and males at an advanced ripening/mature stage and spawned females were found. The short spawning period and histological characteristics of spawned ovaries containing only oocytes in stages of initial development, along with post-ovulatory and atresic follicles, indicated that Brycon orthotaenia presents total spawning.Keywords: teleost fish, oogenesis, spermatogenesis, reproductive cycle. RESUMO Gametogênese e reprodução do matrinxã Brycon orthotaenia (Günther, 1864) (Pisces: Characidae) do rio São Francisco, Minas GeraisEstudaram-se a gametogênese e a reprodução de Brycon orthotaenia do rio São Francisco, na região de Pirapora, Minas Gerais, no período de dezembro/1998 a novembro/1999. O matrinxã B. orthotaenia é uma espécie endêmica da bacia do rio São Francisco, Brasil e importante na pesca comercial. O tamanho de 1ª maturação gonadal, indicado pelo comprimento total do menor macho espermiado e da menor fêmea desovada, foi de 32,0 e 40,5 cm, respectivamente. A reprodução ocorreu de outubro a janeiro, quando observam-se altas freqüências de fêmeas e machos no estádio maturação avançada/maduro e fêmeas desovadas. O curto período de desova e as características histológicas de ovários desovados, contendo somente ovócitos nos estádios iniciais de desenvolvimento ao lado de folículos pós-ovulatórios e atrésicos, indicam que a desova de B. orthotaenia é do tipo total.Palavras-chave: peixe teleósteo, ovogênese, espermatogênese, ciclo reprodutivo.

show abstract

Section: Discussionsupporting

confidence: 87%

Gametogenesis and reproduction of the matrinxã Brycon orthotaenia (Günther, 1864) (Pisces: Characidae) in the São Francisco river, Minas Gerais, Brazil

2006

Self Cite

View full text Add to dashboard Cite

show abstract

“…Similar results were reported by Mota and Pessoa (1973) for the species in Brazilian waters. The progress of atresia in H. plumieri ovaries follows the same general pattern described by Granado (1989) for H. melanurum, and by Miranda et al (1999) and Micale et al (1999) for other teleosts. Yamamoto and Yamazaki (1961) pointed out that the presence of many atretic oocytes in the spent ovary is characteristic of fish with asynchronous spawning.…”

Section: Discussionsupporting

confidence: 82%

“…Falieva (1975, in García-Cagide, 1986a argued that rising water temperature and the lack of conditions favouring spawning are the main causes of atresia in ripe ovaries. The mechanisms which initiate and regulate oocyte atresia in teleost fish are poorly known, especially at the molecular level (Miranda et al, 1999). Some authors (Hsueh et al, 1994;Wood and Van Der Kraak, 2000) have suggested that the cell death mechanism known as apoptosis may be the "in vivo" mechanism of atresia in teleosts.…”

Section: Discussionmentioning

confidence: 99%

Reproduction of the white grunt, <i>Haemulon plumieri</i> (Lacépede, 1802) (Pisces: Haemulidae) from Margarita Island, Venezuela

Palazón-Fernández¹

2007

Sci. Mar.

View full text Add to dashboard Cite

SUMMARY: The grunts (Haemulidae) are an important component of the artisan fisheries in eastern Venezuela, but their biology is poorly known. The object of the present work was to supply basic information about the reproductive biology of H. plumieri in relation to sex ratio, size at maturity, spawning season and fecundity. Samples were collected from the northeast coast of Margarita Island between September 1994 and August 1995. A total of 469 specimens (232 females and 237 males) were examined. Sex ratio did not differ from 1:1 except in February 1995. Minimum size at maturity was 213 mm total length for females and 271 mm total length for males. Size at maturity (L 50 ) was 309 mm total length for females and 357 mm for males. The spawning season extends throughout the year, with peaks in February-April and August-October. Fecundity ranged from 19873 to 535039 eggs, and was related to body length and weight. White grunt was characterised by asynchronous oocyte development and multiple spawning. The weight-length relationship for the sexes differed and showed negative allometry. Condition factor was over 95% during the sampling period, showing minimum values prior to the reproductive peak, which can be interpreted as the result of mobilisation of somatic energy reserves for reproductive development.Keywords: reproduction, Haemulidae, white grunt, Haemulon plumieri, Venezuela. RESUMEN: REPRODUCCIÓN DEL COROCORO MARGARITEÑO, HAEMULON PLUMIERI (LACÉPEDE, 1802) (PISCES: HAEMULIDAE) EN LA ISLA DE MARGARITA, VENEZUELA. -Los corocoros (Haemulidae) representan un componente importante de las pescas artesanales en el oriente de Venezuela. A pesar de esto, su biología es poco conocida. El objetivo de la presente investigación fue aportar información básica sobre la biología reproductiva (proporción sexual, talla de madurez, época de reproducción y fecundidad) de H. plumieri. Fueron examinados 469 ejemplares (232 hembras y 237 machos), obtenidos en muestreos mensuales entre septiembre de 1994 y agosto de 1995. La proporción sexual no se alejó estadísticamente de la unidad excepto en febrero de 1995. La talla mínima de madurez sexual fue de 213 mm de longitud total para las hembras y 271 mm de longitud total para los machos. La talla de maduración (L 50 ) fue de 309 mm de longitud total para las hembras y 357 mm para los machos. La especie se reproduce durante todo el año, con picos de máxima intensidad en febrero-abril y agostooctubre. La fecundidad osciló entre 19873 y 535039 huevos, y estuvo relacionada con la longitud y peso corporal. La especie se caracteriza por presentar un desarrollo asincrónico de los ovocitos y desoves múltiples. La relación peso-longitud difirió entre los sexos y mostró una alometría negativa. El factor de condición se mantuvo por encima del 95% durante el periodo de muestreo y mostró valores mínimos en los meses previos a los picos reproductivos, lo cual es interpretado como el resultado de la movilización de la energía somática para el desarrollo gonadal.

show abstract

“…Other studies have suggested that increased events of follicular atresia are responsible for this change in the proportion of follicle stages (Van den Belt et al, 2002;Weber et al, 2003). Follicular atresia is a hormonally controlled apoptotic process that can be brought on by a number of stressors, including an imbalance of hormones (Miranda, Bazzoli, Rizzo, & Sato, 1999). The current study did examine the expression levels of pro-apoptotic genes and apoptotic genes but there was no significant change in expression with EE 2 treatment .…”

Section: Further Questionscontrasting

confidence: 56%

Inhibition of spawning in zebrafish (Danio rerio): Adverse outcome pathways of quinacrine and ethinylestradiol

Cosme

Lister

Kraak

2015

General and Comparative Endocrinology

View full text Add to dashboard Cite

INHIBITION OF SPAWNING IN ZEBRAFISH (Danio rerio): ADVERSE OUTCOME PATHWAYS OF QUINACRINE AND ETHINYLESTRADIOL Madelyne CosmeAdvisor: University of Guelph, 2014Professor. Glen Van Der KraakThis study examined the effects of estrogen receptor agonist, ethinylestradiol, and the phospholipase A 2 inhibitor, quinacrine, on the pathways controlling follicular recruitment, steroidogenesis, oocyte maturation and ovulation and spawning success in the adult zebrafish. Ethinylestradiol and quinacrine both inhibit spawning but did so through different adverse outcome pathways. Ethinylestradiol affected follicular recruitment (reduced ovarian size and reduction in the proportion of cortical alveolus, vitellogenic and mature follicle stages), steroidogenesis (reduced expression of aromatase) maturation (reduced luteinizing hormone receptor expression) and ovulation (reduced expression of cytosolic phospholipase A2 and the nuclear progesterone receptor). Quinacrine targeted ovulation via a reduction of the steroid 17α, 20β dihydroxy-4-prenen-3-one and expression of the prostaglandin metabolizing enzyme cyclooxygenase 2. Collectively, these studies suggest that a targeted assessment of reproductive endpoints can be used effectively to identify the adverse outcome pathways by which toxicants can impact reproductive fitness.iii ACKNOWLEDGEMENTS

show abstract

Ovarian follicular atresia in two teleost species: a histological and ultrastructural study

Cited by 105 publications

References 21 publications

Gametogenesis and reproduction of the matrinxã Brycon orthotaenia (Günther, 1864) (Pisces: Characidae) in the São Francisco river, Minas Gerais, Brazil

Gametogenesis and reproduction of the matrinxã Brycon orthotaenia (Günther, 1864) (Pisces: Characidae) in the São Francisco river, Minas Gerais, Brazil

Reproduction of the white grunt, <i>Haemulon plumieri</i> (Lacépede, 1802) (Pisces: Haemulidae) from Margarita Island, Venezuela

Inhibition of spawning in zebrafish (Danio rerio): Adverse outcome pathways of quinacrine and ethinylestradiol

Contact Info

Product

Resources

About