Gonadal Development and Histochemistry of the Tropical Oyster, Crassostrea corteziensis (Hertlein, 1951) during an Annual Reproductive Cycle

Rodrı́guez-Jaramillo, Cármen; Hurtado, Miguel; Romero-Vivas, Eduardo; Ramı́rez, José Luis; Manzano, Margaret; Palacios, Elena

doi:10.2983/0730-8000-27.5.1129

Cited by 85 publications

(75 citation statements)

References 19 publications

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“…This finding is similar to that reported by several authors in oysters of the genus Crassostrea (Rodríguez-Jaramillo et al, 2008;Lenz & Boehs, 2011). The age and size of the (Vélez, 1991).…”

Section: __________________supporting

confidence: 81%

“…In this work, a negative correlation between gonadal development and Chl-a concentration was observed which coincides with the lowest temperature recorded. Similar results are reported by Rodríguez-Jaramillo et al (2008) and Chávez-Villalba et al (2008) for C. corteziensis and by Chávez-Villalba et al (2002) for C. gigas. Higher levels of Chl-a and particulate organic matter corresponded to a period of gonadal rest in winter, during which the oyster increased its nutrient and energy reserves, which can be employed to start the gametogenic cycle.…”

Section: __________________supporting

confidence: 78%

“…Development stages is predominant in March, April, and July, and a resting period occurs from December to February. This is similar to that found for this species both in Nayarit and in other localities of the Mexican Pacific (Cuevas-Guevara & Martínez-Guerrero, 1979;Chávez-Villalba et al, 2008;Rodríguez-Jaramillo et al, 2008;Mazón-Suástegui et al, 2011). The occurrence of development stage and spawning during these months is attributable to the increase in water temperature, which is the environmental factor that exerts most control over the physiology of oysters (Chávez-Villalba et al, 2005).…”

Section: __________________supporting

confidence: 66%

“…Temperature has been proved to be the main environmental factor regulating reproduction in marine bivalves (Thompson et al, 1996). For C. corteziensis, several authors have reported a temperature-related pattern in different parts of the Mexican Pacific; partial spawning occurs during temperature descents and steep increases, while mass spawning takes place at the maximal annual temperatures reported (Rodríguez-Jaramillo et al, 2008;Mazón-Suástegui et al, 2011). In this study, spawning was observed from March to November, but was more important in May and October, when abrupt temperature increases were recorded.…”

Section: __________________mentioning

confidence: 63%

“…The reproductive cycle and the influence of abiotic variables have been characterized on the reproduction of C. corteziensis in many coastal lagoons of Mexico (Cuevas-Guevara & Martínez-Guerrero, 1979;Chávez-Villalba et al, 2008;Rodríguez-Jaramillo et al, 2008;Mazón-Suástegui et al, 2011). For example, in Las Guasimas Lagoon, Sonora State, Mexico, temperature has been reported as the main exogenous factor affecting the reproductive cycle (Chávez-Villalba et al, 2008).…”

Section: __________________mentioning

confidence: 99%

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Reproduction of Cortez oyster, Crassostrea corteziensis (Hertlein, 1951) in a growing area in the central Mexican Pacific coast

Mena-Alcántar

Zavala‐Leal

Romero-Bañuelos

et al. 2017

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ABSTRACT. The state of Nayarit is the main oyster producer in the Mexican Pacific, this derived from artisanal crops of Crassostrea corteziensis and collecting of wild seeds. Despite its importance, there are no studies on the reproduction of this species in Boca de Camichín, Nayarit, Mexico, which is the area with the highest production (around 90%). The aim of this study was to evaluate sex ratio, condition index (CI), reproductive cycle, and recruitment size for reproduction and its relationship with environmental factors. Sixty oysters were sampled monthly at La Palicienta Lagoon for one year. The organisms were weighed and measured, then fixed with 10% formalin for histological analyses. Subsequently, the gonads were processed by histology. Sex ratio was different from 1:1, with a predominance of females. The condition index (CI) was higher from March to July. Oyster spawning was most prevalent in May, August, and October. The temperature had a positive relationship with reproduction. Recruitment size at reproduction was 57.1 mm. The results of this study could supply useful information about reproduction of the species at La Palicienta and seed collection in Boca de Camichín, Nayarit.

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Section: __________________supporting

confidence: 81%

Section: __________________supporting

confidence: 78%

Section: __________________supporting

confidence: 66%

Section: __________________mentioning

confidence: 63%

Section: __________________mentioning

confidence: 99%

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Reproduction of Cortez oyster, Crassostrea corteziensis (Hertlein, 1951) in a growing area in the central Mexican Pacific coast

Mena-Alcántar

Zavala‐Leal

Romero-Bañuelos

et al. 2017

lajar

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Effect of temperature, food availability, and estradiol injection on gametogenesis and gender in the pearl oyster Pinctada margaritifera

et al. 2015

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The black-lip pearl oyster Pinctada margaritifera is a protandrous hermaphrodite species. Its economic value has led to the development of controlled hatchery reproduction techniques, although many aspects remain to be optimized. In order to understand reproductive mechanisms and their controlling factors, two independent experiments were designed to test hypotheses of gametogenesis and sex ratio control by environmental and hormonal factors. In one, pearl oysters were exposed under controlled conditions at different combinations of temperature (24 and 28°C) and food level (10,000 and 40,000 cells mL(-1) ); whereas in the other, pearl oysters were conditioned under natural conditions into the lagoon and subjected to successive 17β-estradiol injections (100 μg per injection). Gametogenesis and sex ratio were assessed by histology for each treatment. In parallel, mRNA expressions of nine marker genes of the sexual pathway (pmarg-foxl2, pmarg-c43476, pmarg-c45042, pmarg-c19309, pmarg-c54338, pmarg-vit6, pmarg-zglp1, pmarg-dmrt, and pmarg-fem1-like) were investigated. Maximum maturation was observed in the treatment combining the highest temperature (28°C) and the highest microalgae concentration (40,000 cells mL(-1) ), where the female sex tended to be maintained. Injection of 17β-estradiol induced a significant increase of undetermined stage proportion 2 weeks after the final injection. These results suggest that gametogenesis and gender in adult pearl oysters can be controlled by environmental factors and estrogens. While there were no significant effects on relative gene expression, the 3-gene-pair expression ratio model of the sexual pathway of P. margaritifera, suggest a probable dominance of genetic sex determinism without excluding a mixed sex determination mode (genetic + environmental). J. Exp. Zool. 325A:13-24, 2016. © 2015 Wiley Periodicals, Inc.

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Sex-Determining Mechanisms in Bivalves

Breton

Capt

Guerra

et al. 2018

Transitions Between Sexual Systems

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Gonadal Development and Histochemistry of the Tropical Oyster, Crassostrea corteziensis (Hertlein, 1951) during an Annual Reproductive Cycle

Cited by 85 publications

References 19 publications

Reproduction of Cortez oyster, Crassostrea corteziensis (Hertlein, 1951) in a growing area in the central Mexican Pacific coast

Reproduction of Cortez oyster, Crassostrea corteziensis (Hertlein, 1951) in a growing area in the central Mexican Pacific coast

Effect of temperature, food availability, and estradiol injection on gametogenesis and gender in the pearl oyster Pinctada margaritifera

Sex-Determining Mechanisms in Bivalves

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