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Article ; Online: Morphological analysis of the reproductive activity of Curimatella lepidura (Characiformes: Curimatidae)

Gontijo, Daniel Lopes / Marcon, Lucas / Rizzo, Elizete / Bazzoli, Nilo / dos Santos, José Enemir

Anatomia, Histologia, Embryologia. 2023 Mar., v. 52, no. 2, p. 172-179

2023 , Page(s) 172–179

Abstract: Curimatella lepidura, commonly known as the manjuba, belongs to the Curimatidae family. To assess the reproductive activity of this species, fish were collected from three sections of the São Francisco River: section 1 = the Três Marias reservoir (TMR), ... ...

Abstract	Curimatella lepidura, commonly known as the manjuba, belongs to the Curimatidae family. To assess the reproductive activity of this species, fish were collected from three sections of the São Francisco River: section 1 = the Três Marias reservoir (TMR), section 2 = the SFR immediately downstream of the TMR, and section 3 = the SFR 54 km downstream from the TMR after the confluence of the SFR with the Abaeté River. Fish were collected bimonthly from January to December 2012. From this, the gonadosomatic index (GSI), Fulton condition factor (K), gonadal maturation stages in females and males, and diameters of vitellogenic follicles were determined. That is, this study employed histological and histometrical techniques to study the ovaries and testes of collected fish. The Fulton condition factor was statistically higher in section 1 than in the other sections, indicating that C. lepidura presents better health conditions in this section. Fish in the maturation/mature gonadal stage were collected in the November/December and January/February bimesters, coinciding with high temperatures, a long photoperiod, and abundant rainfall in this region. The mean vitellogenic follicle diameter was statistically lowest for sections 2 and 3, with a better impact on reproduction than in section 1. Overall, the results show that C. lepidura has reproductive success in lentic environments, such as in section 1, the TMR.
Keywords	Curimatidae ; condition factor ; fish ; gonadosomatic index ; gonads ; histology ; lentic systems ; rain ; reproductive success ; rivers
Language	English
Dates of publication	2023-03
Size	p. 172-179
Publishing place	John Wiley & Sons, Inc.
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	537922-2
ISSN	1439-0264 ; 0340-2096 ; 0044-4294
ISSN (online)	1439-0264
ISSN	0340-2096 ; 0044-4294
DOI	10.1111/ahe.12867
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Reproductive toxicity induced by lead exposure: Effects on gametogenesis and sex steroid signaling in teleost fish.

Ferreira, Camila Stephanie / Ribeiro, Yves Moreira / Moreira, Davidson Peruci / Paschoalini, Alessandro Loureiro / Bazzoli, Nilo / Rizzo, Elizete

Chemosphere

2023 Volume 340, Page(s) 139896

Abstract: Lead (Pb) is an emerging contaminant widely distributed in aquatic environments, which has serious effects on human and animal health. In this study, we determined whether Pb exposure affects gametogenesis, sex steroids, estrogen (ERα and ERβ), and ... ...

Abstract	Lead (Pb) is an emerging contaminant widely distributed in aquatic environments, which has serious effects on human and animal health. In this study, we determined whether Pb exposure affects gametogenesis, sex steroids, estrogen (ERα and ERβ), and androgen (AR) receptors. Adult specimens of Astyanax bimaculatus were exposed in duplicate to 15, 50, and 100 μg/L of lead acetate, whereas the control group was not exposed. After 28 days of exposure, fish were euthanized and samples of the gonads, liver, and blood were collected for analysis. The results indicated a reduction in the gonadosomatic index as well as the diameters of the vitellogenic follicles and seminiferous tubules in the exposed groups. Morphometry of gametogenesis revealed inhibition of the secondary oocyte growth and a reduction in the number of spermatozoa in the 50 and 100 μg/L Pb-treated groups. In females, plasma 17β-estradiol (E2) increased following 15 and 50 μg/L Pb treatment, whereas males exhibited an increase in E2 and 11-ketotestosterone following treatment with 15 and 100 μg/L Pb, respectively. Vitellogenin was significantly reduced in females exposed to 100 μg/L Pb, but metallothionein levels were unchanged. ERα, ERβ, and AR were immunolocalized in the somatic and germ cells, with increased ovarian expression of ERα and Erβ in the 100 μg/L Pb-treated group, but no significant difference in AR among the groups. In males, only ERα increased in the 100 μg/L Pb-treated group. These results indicate that Pb exposure impairs gametogenesis, disrupts estrogen receptor signaling, and affects the expression of major reproductive biomarkers in A. bimaculatus.
MeSH term(s)	Adult ; Animals ; Female ; Humans ; Male ; Estrogen Receptor alpha ; Lead/toxicity ; Estrogen Receptor beta ; Gametogenesis ; Reproduction ; Gonadal Steroid Hormones ; Fishes ; Receptors, Estrogen
Chemical Substances	Estrogen Receptor alpha ; Lead (2P299V784P) ; Estrogen Receptor beta ; Gonadal Steroid Hormones ; Receptors, Estrogen
Language	English
Publishing date	2023-08-19
Publishing country	England
Document type	Journal Article
ZDB-ID	120089-6
ISSN	1879-1298 ; 0045-6535 ; 0366-7111
ISSN (online)	1879-1298
ISSN	0045-6535 ; 0366-7111
DOI	10.1016/j.chemosphere.2023.139896
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Article ; Online: Reproductive and morphological analysis of the trairão Hoplias intermedius in the São Francisco River, downstream from a large reservoir

Diniz, Mateus Augusto Silva / Marcon, Lucas / Ervilha, Bernardo Borges / dos Santos, José Enemir / Rizzo, Elizete / Bazzoli, Nilo

Anatomia, Histologia, Embryologia. 2023 Nov., v. 52, no. 6 p.836-842

2023

Abstract: Hoplias intermedius, of the Characiformes order and Erytrinidae family, is widely distributed across South America. This commercially interesting species can reach a length of 100 cm and a weight of 15–20 kg. To evaluate the reproductive biology of H. ... ...

Abstract	Hoplias intermedius, of the Characiformes order and Erytrinidae family, is widely distributed across South America. This commercially interesting species can reach a length of 100 cm and a weight of 15–20 kg. To evaluate the reproductive biology of H. intermedius in the São Francisco River, Brazil, 154 males and 190 females were captured bi‐monthly between September 2018 and August 2019 from the downstream regions of the Três Marias dam. Gillnets with differently sized meshes were deployed at distances of 34–54 km after the confluence with the Abaeté River (18°00′49″ S, 45°10′51″ W). Biometric data, gonadosomatic index (GSI), Fulton condition factor (K) and absolute fecundity (AF) were determined for each specimen. Gonad maturation stages and the spawning season were also established. The biometric data, GSI and K average values were relatively higher in females than in males. The reproductive peak for both sexes was reached around January/February. The mean AF was 4300.5 ± 1451.2 follicles per female. Fully developed vitellogenic follicles had a mean diameter of 1014.8 ± 250.7 μm, which is characteristic of fish with moderate fecundity. Fish of all maturation stages, from mature, spawned and spermed, occurred in all bimesters, indicating that this species reproduced throughout the year. The high frequency of spawning females throughout the year and the histological characteristics of spawned ovaries indicated that trairão H. intermedius' spawning type is partial.
Keywords	Hoplias ; biometry ; condition factor ; fecundity ; females ; fish ; gillnets ; gonadosomatic index ; histology ; rivers ; Brazil
Language	English
Dates of publication	2023-11
Size	p. 836-842.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	537922-2
ISSN	1439-0264 ; 0340-2096 ; 0044-4294
ISSN (online)	1439-0264
ISSN	0340-2096 ; 0044-4294
DOI	10.1111/ahe.12941
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Exposure to acetaminophen impairs gametogenesis and fertility in zebrafish (Danio rerio)

Moreira, Davidson Peruci / Ribeiro, Yves Moreira / Ferreira, Camila Stephanie / dos Santos Nassif Lacerda, Samyra Maria / Rizzo, Elizete

Arch Toxicol. 2023 Jan., v. 97, no. 1, p. 263-278

2023 , Page(s) 263–278

Abstract: Acetaminophen (ACE; paracetamol) is one of the most widely used nonsteroidal anti-inflammatory drugs worldwide and is often found in aquatic systems, where it can act on nontarget species and impair fish reproduction. This study aimed to investigate the ... ...

Abstract	Acetaminophen (ACE; paracetamol) is one of the most widely used nonsteroidal anti-inflammatory drugs worldwide and is often found in aquatic systems, where it can act on nontarget species and impair fish reproduction. This study aimed to investigate the effects of chronic exposure to environmentally relevant ACE concentrations (0.5, 5 and 50 µg/L) on multiple reproductive parameters in zebrafish (Danio rerio). Gametogenesis was analyzed using histology, morphometry, cell proliferation, and apoptosis. This study also evaluated sex steroids, and prostaglandin E₂ (PGE₂) levels, gene expression for sex steroids and PGE₂ receptors, fertilization rate, and semen quality. In females, exposure to 5 and 50 µg/L ACE induced larger and more abundant vitellogenic follicles and increased follicular atresia. In these treatments, males showed a lower proportion and proliferation of undifferentiated spermatogonia and a higher proportion of TUNEL-positive differentiated spermatogonia, spermatids, and spermatozoa, resulting in lower sperm production. ACE increased 17β-estradiol (E₂) and reduced 11-ketotestosterone levels in the testis, whereas only E₂ increased in the ovaries. In both sexes, gonadal PGE₂ levels were reduced. ACE at 50 µg/L induced an increase in the gene expression of androgen, estrogen, and PGE₂ receptors in the ovaries, and reduced expression in the testes. Results also showed lower egg production and fertilization rate from 28 days of exposure with reduced sperm quality. These results demonstrated that ACE impairs the reproductive performance of zebrafish, affecting multiple reproductive parameters, which may be caused by the synergistic action of the imbalance of sex steroids, with a reduction of PGE₂ and its receptors.
Keywords	Danio rerio ; acetaminophen ; androgens ; apoptosis ; cell proliferation ; chronic exposure ; egg production ; estrogens ; fish ; follicular atresia ; gene expression ; histology ; morphometry ; nontarget organisms ; prostaglandins ; reproductive performance ; semen quality ; sperm quality ; spermatids ; spermatogenesis ; spermatogonia ; synergism ; testes
Language	English
Dates of publication	2023-01
Size	p. 263-278
Publishing place	Springer Berlin Heidelberg
Document type	Article ; Online
ZDB-ID	124992-7
ISSN	1432-0738 ; 0340-5761
ISSN (online)	1432-0738
ISSN	0340-5761
DOI	10.1007/s00204-022-03390-3
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Article ; Online: Morphological analysis of the reproductive activity of Curimatella lepidura (Characiformes: Curimatidae).

Gontijo, Daniel Lopes / Marcon, Lucas / Rizzo, Elizete / Bazzoli, Nilo / Dos Santos, José Enemir

Anatomia, histologia, embryologia

2022 Volume 52, Issue 2, Page(s) 172–179

Abstract	Curimatella lepidura, commonly known as the manjuba, belongs to the Curimatidae family. To assess the reproductive activity of this species, fish were collected from three sections of the São Francisco River: section 1 = the Três Marias reservoir (TMR), section 2 = the SFR immediately downstream of the TMR, and section 3 = the SFR 54 km downstream from the TMR after the confluence of the SFR with the Abaeté River. Fish were collected bimonthly from January to December 2012. From this, the gonadosomatic index (GSI), Fulton condition factor (K), gonadal maturation stages in females and males, and diameters of vitellogenic follicles were determined. That is, this study employed histological and histometrical techniques to study the ovaries and testes of collected fish. The Fulton condition factor was statistically higher in section 1 than in the other sections, indicating that C. lepidura presents better health conditions in this section. Fish in the maturation/mature gonadal stage were collected in the November/December and January/February bimesters, coinciding with high temperatures, a long photoperiod, and abundant rainfall in this region. The mean vitellogenic follicle diameter was statistically lowest for sections 2 and 3, with a better impact on reproduction than in section 1. Overall, the results show that C. lepidura has reproductive success in lentic environments, such as in section 1, the TMR.
MeSH term(s)	Female ; Male ; Animals ; Characiformes ; Reproduction ; Ovarian Follicle ; Testis ; Ovary
Language	English
Publishing date	2022-10-12
Publishing country	Germany
Document type	Journal Article
ZDB-ID	537922-2
ISSN	1439-0264 ; 0340-2096 ; 0044-4294
ISSN (online)	1439-0264
ISSN	0340-2096 ; 0044-4294
DOI	10.1111/ahe.12867
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Article ; Online: Reproductive and morphological analysis of the trairão Hoplias intermedius in the São Francisco River, downstream from a large reservoir.

Diniz, Mateus Augusto Silva / Marcon, Lucas / Ervilha, Bernardo Borges / Dos Santos, José Enemir / Rizzo, Elizete / Bazzoli, Nilo

Anatomia, histologia, embryologia

2023 Volume 52, Issue 6, Page(s) 836–842

Abstract: Hoplias intermedius, of the Characiformes order and Erytrinidae family, is widely distributed across South America. This commercially interesting species can reach a length of 100 cm and a weight of 15-20 kg. To evaluate the reproductive biology of H. ... ...

Abstract	Hoplias intermedius, of the Characiformes order and Erytrinidae family, is widely distributed across South America. This commercially interesting species can reach a length of 100 cm and a weight of 15-20 kg. To evaluate the reproductive biology of H. intermedius in the São Francisco River, Brazil, 154 males and 190 females were captured bi-monthly between September 2018 and August 2019 from the downstream regions of the Três Marias dam. Gillnets with differently sized meshes were deployed at distances of 34-54 km after the confluence with the Abaeté River (18°00'49″ S, 45°10'51″ W). Biometric data, gonadosomatic index (GSI), Fulton condition factor (K) and absolute fecundity (AF) were determined for each specimen. Gonad maturation stages and the spawning season were also established. The biometric data, GSI and K average values were relatively higher in females than in males. The reproductive peak for both sexes was reached around January/February. The mean AF was 4300.5 ± 1451.2 follicles per female. Fully developed vitellogenic follicles had a mean diameter of 1014.8 ± 250.7 μm, which is characteristic of fish with moderate fecundity. Fish of all maturation stages, from mature, spawned and spermed, occurred in all bimesters, indicating that this species reproduced throughout the year. The high frequency of spawning females throughout the year and the histological characteristics of spawned ovaries indicated that trairão H. intermedius' spawning type is partial.
MeSH term(s)	Male ; Female ; Animals ; Reproduction ; Fertility ; Characiformes ; Ovary ; Brazil ; Seasons
Language	English
Publishing date	2023-06-26
Publishing country	Germany
Document type	Journal Article
ZDB-ID	537922-2
ISSN	1439-0264 ; 0340-2096 ; 0044-4294
ISSN (online)	1439-0264
ISSN	0340-2096 ; 0044-4294
DOI	10.1111/ahe.12941
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Article ; Online: Starvation-induced autophagy modulates spermatogenesis and sperm quality in Nile tilapia.

Sales, Camila Ferreira / Pinheiro, Ana Paula Barbosa / Ribeiro, Yves Moreira / Moreira, Davidson Peruci / Luz, Ronald Kennedy / Melo, Rafael Magno Costa / Rizzo, Elizete

Theriogenology

2023 Volume 216, Page(s) 42–52

Abstract: Spermatogenesis is a finely regulated process that involves the interaction of several cellular mechanisms to ensure the proper development and maturation of germ cells. This study assessed autophagy contribution and its relation to apoptosis in fish ... ...

Abstract	Spermatogenesis is a finely regulated process that involves the interaction of several cellular mechanisms to ensure the proper development and maturation of germ cells. This study assessed autophagy contribution and its relation to apoptosis in fish spermatogenesis during starvation. To that end, Nile tilapia males were subjected to 0 (control), 7, 14, 21, and 28 days of starvation to induce autophagy. Testes samples were obtained for analyses of spermatogenesis by histology, electron microscopy, immunohistochemistry, and western blotting. Sperm quality was assessed using a computer-assisted sperm analysis (CASA) system. Data indicated a significant reduction in gonadosomatic index, seminiferous tubule area, and spermatozoa proportion in fish subject to starvation compared to the control group. Immunoblotting revealed a reduction of Bcl2 and Beclin 1 associated with increased Bax and Caspase-3, mainly after 21 and 28 days of starvation. LC3 and P62 indicated reduced autophagic flux in these starvation times. Immunolabeling for autophagic and apoptotic proteins occurred in all development stages of the germ cells, but protein expression varied throughout starvation. Beclin 1 and Cathepsin D decreased while Bax and Caspase-3 increased in spermatocytes, spermatids, and spermatozoa after 21 and 28 days. Autophagic and lysosomal proteins colocalization indicated the fusion of autophagosomes with lysosomes and lysosomal degradation in spermatogenic cells. The CASA system indicated reduced sperm motility and velocity in animals subjected to 21 and 28 days of starvation. Altogether, the data support autophagy acting at different spermatogenesis stages in Nile tilapia, with decreased autophagy and increased apoptosis after 21 and 28 days of starvation, which results in a decrease in the spermatozoa number and sperm quality.
MeSH term(s)	Male ; Animals ; Caspase 3/metabolism ; Cichlids/metabolism ; Beclin-1/genetics ; Beclin-1/metabolism ; bcl-2-Associated X Protein/metabolism ; Sperm Motility ; Semen/metabolism ; Spermatozoa/metabolism ; Spermatogenesis ; Spermatids ; Autophagy
Chemical Substances	Caspase 3 (EC 3.4.22.-) ; Beclin-1 ; bcl-2-Associated X Protein
Language	English
Publishing date	2023-12-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	189232-0
ISSN	1879-3231 ; 0093-691X
ISSN (online)	1879-3231
ISSN	0093-691X
DOI	10.1016/j.theriogenology.2023.11.030
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Article: Insulin-like growth factors 1 and 2 are associated with testicular germ cell proliferation and apoptosis during fish reproduction.

Moreira, Davidson P / Melo, Rafael M C / Weber, André A / Rizzo, Elizete

Reproduction, fertility, and development

2020 Volume 32, Issue 11, Page(s) 988–998

Abstract: To support sperm production, fish testes undergo intense tissue remodelling, with endocrine, paracrine and autocrine signals regulating gonad physiology. The aim of this study was to investigate the testicular expression of insulin-like growth factor ( ... ...

Abstract	To support sperm production, fish testes undergo intense tissue remodelling, with endocrine, paracrine and autocrine signals regulating gonad physiology. The aim of this study was to investigate the testicular expression of insulin-like growth factor (Igf) 1 and Igf2 during spermatogenesis, and their relationship with cell proliferation and apoptosis throughout the reproductive cycle. The study was performed in male Hypostomus garmani, a catfish living in headwater rivers of the São Francisco River basin, Brazil. Spermatogenesis was analysed using histology, morphometry, immunohistochemistry and terminal deoxyribonucleotidyl transferase-mediated dUTP-digoxigenin nick end-labelling (TUNEL) analysis at different maturity stages. The results showed the proliferation of spermatogonia throughout the reproductive cycle, with a higher rate during the ripe stage. Germ and Sertoli cells expressed Igf1 at all stages of testicular maturity, Igf2 was predominant at the ripe stage and both Igf1 and Igf2 occurred at the spent stage. Caspase-3 and TUNEL analysis revealed a higher rate of apoptosis at the spent stage associated with reduced expression of Igf1 and Igf2. Sertoli cell proliferation was associated with spermatogonia and spermatocyte cysts at different stages of the reproductive cycle. Together, the data support a proliferative role for Igf1 and Igf2 in regulating testicular apoptosis in H. garmani, with cyclical variation in their expression during gonad maturation.
MeSH term(s)	Animals ; Apoptosis/physiology ; Catfishes/genetics ; Catfishes/metabolism ; Cell Proliferation/physiology ; Insulin-Like Growth Factor I/genetics ; Insulin-Like Growth Factor I/metabolism ; Insulin-Like Growth Factor II/genetics ; Insulin-Like Growth Factor II/metabolism ; Male ; Sertoli Cells/metabolism ; Spermatogenesis/physiology ; Spermatogonia/cytology ; Spermatogonia/metabolism ; Testis/metabolism
Chemical Substances	Insulin-Like Growth Factor I (67763-96-6) ; Insulin-Like Growth Factor II (67763-97-7)
Language	English
Publishing date	2020-07-20
Publishing country	Australia
Document type	Journal Article
ZDB-ID	1019913-5
ISSN	1448-5990 ; 1031-3613
ISSN (online)	1448-5990
ISSN	1031-3613
DOI	10.1071/RD20128
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Article ; Online: Reproduction of saguiru Steindachnerina elegans (Steindachner, 1874) (Pisces: Curimatidae) in the São Francisco River, downstream from a large reservoir in south-eastern Brazil.

Campos Filho, Lívio Giorgio L DE / Marcon, Lucas / Santos, José E Dos / Santiago, Kleber B / Rizzo, Elizete / Bazzoli, Nilo

Anais da Academia Brasileira de Ciencias

2022 Volume 94, Issue 2, Page(s) e20190919

Abstract: The gametogenesis and reproduction of S. elegans from the São Francisco River at Três Marias, Minas Gerais, were analyzed in this study. Steindachrina elegans is a species abundant in the São Francisco River basin and an important fish in the food chain. ...

Abstract	The gametogenesis and reproduction of S. elegans from the São Francisco River at Três Marias, Minas Gerais, were analyzed in this study. Steindachrina elegans is a species abundant in the São Francisco River basin and an important fish in the food chain. The size at first gonadal maturation (indicated by the total length of the shortest spermatid male and spawned female) was 10.5 cm and 15.0 cm, respectively. Reproduction occurred more frequently from September to April. This period had high water temperature values. A high frequency of females was observed at the mature and spawned stages and height gonadosomatic index (GSI). Meanwhile, in males, the reproductive peak was from November to February. The long spawning period and the histological characteristics of the spawned ovaries that contained oocytes at different stages of development along with post-ovulatory and atretic oocytes indicates that the spawning of S. elegans is of the partial type.
MeSH term(s)	Animals ; Brazil ; Characiformes ; Female ; Gonads ; Male ; Reproduction ; Rivers ; Seasons
Language	English
Publishing date	2022-03-25
Publishing country	Brazil
Document type	Journal Article
ZDB-ID	2046885-4
ISSN	1678-2690 ; 0001-3765
ISSN (online)	1678-2690
ISSN	0001-3765
DOI	10.1590/0001-3765202220190919
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Article ; Online: Adverse effects of herbicides in freshwater Neotropical fish: A review.

Ribeiro, Yves Moreira / Moreira, Davidson Peruci / Weber, André Alberto / Sales, Camila Ferreira / Melo, Rafael Magno Costa / Bazzoli, Nilo / Rizzo, Elizete / Paschoalini, Alessandro Loureiro

Aquatic toxicology (Amsterdam, Netherlands)

2022 Volume 252, Page(s) 106293

Abstract: Although herbicides have been developed to act on the physiological processes of plants, they are responsible for causing deleterious effects on animals. These chemical compounds are widely used throughout the world, but especially in countries that ... ...

Abstract	Although herbicides have been developed to act on the physiological processes of plants, they are responsible for causing deleterious effects on animals. These chemical compounds are widely used throughout the world, but especially in countries that export agricultural products such as Central and South America, their use has increased in recent years. Aquatic environments are natural reservoirs of herbicides, which after being applied on crops, run off through the soil reaching rivers, lakes, and oceans. Fish are among the many organisms affected by the contamination of aquatic environments caused by herbicides. These animals play an important ecological role and are a major source of food for humans. However, few studies address the effects of herbicides on fish in this region. Thus, in the present review we discuss the morphophysiological and molecular consequences of herbicide exposure in Neotropical fish systems as well as how the environmental and land use characteristics in this region can influence the toxicity of these pollutants. A toxicity pathway framework was developed summarizing the mechanisms by which herbicides act and endpoints that need to be further investigated.
MeSH term(s)	Animals ; Humans ; Herbicides/chemistry ; Water Pollutants, Chemical/toxicity ; Rivers/chemistry ; Fishes ; Lakes ; Soil
Chemical Substances	Herbicides ; Water Pollutants, Chemical ; Soil
Language	English
Publishing date	2022-09-09
Publishing country	Netherlands
Document type	Journal Article ; Review
ZDB-ID	782699-0
ISSN	1879-1514 ; 0166-445X
ISSN (online)	1879-1514
ISSN	0166-445X
DOI	10.1016/j.aquatox.2022.106293
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