Induction of Intersex and Masculinization of the Equilateral Venus,<i>Gomphina veneriformis</i>(Bivalvia: Veneridae) by Zinc

Ju, Sun Mi; Park, Jung Jun; Lee, Jung Sick

doi:10.1080/19768354.2009.9647227

Cited by 17 publications

(6 citation statements)

References 23 publications

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“…In the case of Pomacea canaliculata, C. gigas and Mytilus sp., an oligogenic sex determination method was used, which is a mechanism that results in highly diversified sex ratio and sex determination by small number of genes ( Guo et al, 1998 ; Yusa, 2007 ). Changes in sex ratio due to exposure to pollutants, such as EDCs (endocrine disrupting chemicals) during the inactive season, have also been reported in Mya arenaria ( Gagné et al, 2003 ), Gomphina veneriformis ( Lee & Park, 2007 ; Ju et al, 2009 ) and Scapharca broughtonii ( Lee et al, 2009 ).…”

mentioning

confidence: 96%

Sex Ratio and Sex Reversal in Two-year-old Class of Oyster, Crassostrea gigas (Bivalvia: Ostreidae)

Park¹,

Kim²,

Kang³

et al. 2012

Development &Amp; Reproduciton

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The sex ratio (F:M) in the same population of oyster, Crassostrea gigas at the commencement of the study (2007) was 1:1.0, but changed to 1:2.8 by the end of the study (2008). The sex reversal rate in two-year-old oysters was 40.2%. Specifically, female to male sex reversal rate was 66.1%, which is higher than the male to female sex reversal rate of 21.1%. The sex reversal pattern of C. gigas appears to go from male⇒female⇒male, and as such is determined to be rhythmical hermaphroditism.

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mentioning

confidence: 96%

Sex Ratio and Sex Reversal in Two-year-old Class of Oyster, Crassostrea gigas (Bivalvia: Ostreidae)

Park¹,

Kim²,

Kang³

et al. 2012

Development &Amp; Reproduciton

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“…Factors such as temperature, food availability and day length are involved in environmental sex determination of bivalves (Yusa, 2007). Changes in sex ratio due to exposure to pollutants, such as EDCs and heavy metals during the inactive season, have also been reported in Mya arenaria (Gagné et al, 2005), G. veneriformis (Lee & Park, 2007; Ju et al, 2009) and Scapharca broughtonii (Lee et al, 2009). …”

Section: Discussionmentioning

confidence: 91%

Indirect Evidence on Sex Reversal of Sinonovacula constricta (Bivalvia: Euheterodonta) and Gomphina veneriformis (Bivalvia: Veneridae)

Shin

Park

Choi

et al. 2014

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This study attempts to propose the possibility of the sex reversal in Sinonovacula constricta and Gomphina veneriformis by confirming the changes in the sex ratio with the shell length in the same population level. For analysis of sex ratio, 100 individuals of S. constricta (SL 26.5-95.0 mm) and 2385 individuals of G. veneriformis (SL 15.1-60.1 mm) were used. Sex was analyzed histologically. Both species displayed the tendency of increase in the female proportion with increase in shell length. In this study, changes in the sex ratio in accordance with the growth of S. constricta and G. veneriformis are determined to be indirect evidence that signifies their sex reversal.

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“…Metal with androgenic activity have been also described. Ju et al (2009) showed that exposure to zinc could skew the sex ratio towards predominance of males in Gomphina veneriformis (Bivalvia, Veneridae) and promote male maturity compared to female.…”

Section: Discussionmentioning

confidence: 98%

The endocrine-disrupting effect and other physiological responses of municipal effluent on the clam Ruditapes decussatus

Mezghani-Chaari

Machreki-Ajmi

Trémolet

et al. 2015

Environ Sci Pollut Res

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In order to document the potential endocrine disrupting and toxic effect of the municipal wastewater effluents discharged into the Sfax coastal area (South of Tunisia), specimens of clam R. decussatus were collected from a reference site and were in vivo exposed to treated sewage effluent for 30 days. To this end, estrogenic and androgenic activities were measured in the gills to assess potential accumulation and regulation of active compounds. After effluent exposure androgenic activity in organic extracts increased up to fivefold compared to controls and remained elevated, while estrogenic activity was not significantly affected by exposure. As a consequence, remarkable disruptions in the gametogenesis activity, glycogen content, and Vitellogenin-like protein levels in male clams were observed. A parallel analysis of heavy metals in clam tissues was determined. A significant uptake of Ni, Zn, and Pb in soft tissues of exposed clams was observed. The significant increase of malondialdehyde (MDA) concentrations as a function of exposure time implies that clams have been exposed to an oxidative stress probably due to the presence of high metal concentrations in sewage effluent. Correlation analysis has revealed a statistically significant and positive relationship between MDA levels and metal concentrations in clams' tissues. The acetylcholinesterase activity was not significantly affected by exposure. Altogether, these results showed that a short-term exposure to a mixture of chemical compounds released by the Sfax wastewater treatment plant induce adverse physiological and reproductive effects in R. decussatus. Further studies are underway in order to evaluate its long-term impacts on aquatic wildlife in the gulf of Gabes area.

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Induction of Intersex and Masculinization of the Equilateral Venus,Gomphina veneriformis(Bivalvia: Veneridae) by Zinc

Cited by 17 publications

References 23 publications

Sex Ratio and Sex Reversal in Two-year-old Class of Oyster, Crassostrea gigas (Bivalvia: Ostreidae)

Sex Ratio and Sex Reversal in Two-year-old Class of Oyster, Crassostrea gigas (Bivalvia: Ostreidae)

Indirect Evidence on Sex Reversal of Sinonovacula constricta (Bivalvia: Euheterodonta) and Gomphina veneriformis (Bivalvia: Veneridae)

The endocrine-disrupting effect and other physiological responses of municipal effluent on the clam Ruditapes decussatus

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