Salinity and rainfall as inducers of cell proliferation and apoptosis in mangrove oyster Crassostrea gasar spermatogenesis

Pantoja, Juliana Caroline Dias; Oliveira, Luiz F. S.; Ferreira, María Auxiliadora Pantoja; Silva, Breno Richard Monteiro; Nunes, Zélia Maria Pimentel; Mendes, Yanne A.; Oliveira, Renata S.; Rocha, Rossineide Martins da

doi:10.1016/j.rsma.2020.101411

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…Among the environmental variables with a wide range of variation in Amazon coastal waters, salinity and primary productivity are the most important in the modulation of oyster reproductive biology (Pantoja et al 2020). Salinity appears to exert a strong influence on the maturation and spawning of oysters in the Amazon (Paixão et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Reproductive cycle of the mangrove oyster, Crassostrea rhizophorae (Bivalvia: Ostreidae) cultured in a macrotidal high-salinity zone on the Amazon mangrove coast of Brazil

et al. 2021

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This study aimed to establish the reproductive cycle of the mangrove oyster, Crassostrea rhizophorae cultured in the macrotidal estuary of the Paciência River, Maranhão state, on the northeastern coast of Brazil, and its relationship with environmental factors. Oysters were collected monthly throughout 2013 for histological analysis of sex ratio, gonadal development and condition index. The sex ratio was 1:1.39 (M:F) and only 5 specimens presented hermaphroditism. The breeding process was continuous throughout the year and mature (IIIA stage) and spawning oysters (IIIB stage) were present in practically all months. Low variation in temperature seemed to be the main factor for the continuity of the reproductive cycle. Besides temperature, the relationship between rainfall, salinity and primary productivity affected the stimulus and timing of reproductive events. The rainy season, with low values of salinity and high values of chlorophyll a and particulate organic matter, appeared to be the main reproductive period, with release of gametes and production and maturation of new gamete cohorts in the short term. In the tropics, where gamete maturation and release seem to be continuous and concomitant, the condition index does not appear to be the best method to assess reserve accumulation peaks and gonadal repletion.

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Section: Introductionmentioning

confidence: 99%

Reproductive cycle of the mangrove oyster, Crassostrea rhizophorae (Bivalvia: Ostreidae) cultured in a macrotidal high-salinity zone on the Amazon mangrove coast of Brazil

et al. 2021

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“…A total of one thousand elements were counted per ovary. In each ovary, we calculated the percentage of the elements (ovarian follicles, granulosa cells, and oocytes) immunostained for cleaved Caspase-3, BCL-2, PCNA, and AMH [ 26 , 27 ].…”

Section: Methodsmentioning

confidence: 99%

Follicular Atresia, Cell Proliferation, and Anti-Mullerian Hormone in Two Neotropical Primates (Aotus nancymae and Sapajus macrocephalus)

Cardoso

Guimarães

Mayor

et al. 2023

Animals

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This study evaluated the follicular atresia, cell proliferation, and anti-Mullerian hormone action in Aotus nancymae and Sapajus macrocephalus during three sexual phases (follicular, luteal, and gestational). Follicular quantification and immunolocalization of Caspase-3 protein, B-cell lymphoma 2 (BCL-2), proliferating cell nuclear antigen (PCNA), and anti-Mullerian hormone (AMH) were performed. A significant difference in the quantification between preantral and antral follicles, with a progressive decrease in the antrals, was identified. Protein and hormonal markers varied significantly between follicle cell types (A. nancymae p = 0.001; S. macrocephalus, p = 0.002). Immunostaining in the preantral and antral follicles was present in all sexual phases; for Caspase-3, in granulosa cells, oocytes, and stroma; for BCL-2, in granulosa cells, oocytes, and theca; and for PCNA and AMH, in oocytes and granulosa cells. The immunostaining for Caspase-3 was more expressive in the preantral follicles (follicular phase, p < 0.05), while that for BCL-2 and PCNA was more expressive in the antral follicles of the follicular phase. The AMH was more expressive in the primary and antral follicles of nonpregnant females, in both the follicular and luteal phases. Our results contribute to understanding the ovarian follicular selection, recruitment, and degeneration of these species.

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Morphological approaches as tools to study the development of male germ cells of Crassostrea gasar (Mollusca, Bivalvia)

Pantoja,

Ferreira,

Viana

et al. 2024

Zoomorphology

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Salinity and rainfall as inducers of cell proliferation and apoptosis in mangrove oyster Crassostrea gasar spermatogenesis

Cited by 4 publications

References 32 publications

Reproductive cycle of the mangrove oyster, Crassostrea rhizophorae (Bivalvia: Ostreidae) cultured in a macrotidal high-salinity zone on the Amazon mangrove coast of Brazil

Reproductive cycle of the mangrove oyster, Crassostrea rhizophorae (Bivalvia: Ostreidae) cultured in a macrotidal high-salinity zone on the Amazon mangrove coast of Brazil

Follicular Atresia, Cell Proliferation, and Anti-Mullerian Hormone in Two Neotropical Primates (Aotus nancymae and Sapajus macrocephalus)

Morphological approaches as tools to study the development of male germ cells of Crassostrea gasar (Mollusca, Bivalvia)

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