Delayed gametogenesis of Mya arenaria in the Saguenay fjord (Canada): a consequence of endocrine disruptors?

Gauthier-Clerc, Sophie; Pellerin, J.; Blaise, C.; Gagné, François

doi:10.1016/s1532-0456(02)00041-8

Cited by 49 publications

(52 citation statements)

References 24 publications

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“…대부분의 패류들은 일반적으로 50-150% 해수의 범위에서 는 등장이며 (Tucker, 1970), 염분의 감소에 따라 심장 박동 수, 산소소비, 암모니아 배설 및 아미노산 등의 생리적 변화를 수반한다 (Pierce and Greenberg, 1972). 또한, 염분변화는 패류의 세포 내 수분과 염류의 유입 및 배출 균형을 파괴하며, 염분이 급격하게 변화하면 세포용적과 관련된 대사율을 줄이 기 위하여 패각을 닫는 즉각적인 행동반응을 나타낸다 (Rasmussen et al, 1983;Sunila and Lindstrom, 1985;Gauthier-Clerc et al, 2002). 이 외에도 해양환경에 의한 물 리· 화학적 스트레스는 호흡을 비롯한 다양한 생리적인 변화와 함께 기관계의 구조적 변화를 유도하여 기능적인 장애를 초래 한다는 결과가 여러 연구자에 의해 보고되고 있다 (Hinch and Stephenson, 1987;Regoli and Orlando, 1994;Quinn et al, 2004) 하였다 (Fig.…”

Section: 력이 강해 세포나 기관의 막을 공격하여 세포의 기능을 손상시unclassified

Recovery Rate and Histological Changes in the Gills of Juvenile Abalone Haliotis discus hannai by Exposure Time of Different Water Temperatures and Salinities

Park¹,

Kim²,

Lim³

et al. 2013

The Korean Journal of Malacology

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This study looked into recovery rate and histological changes in the gills of juvenile abalone Haliotis discus hannai by exposure time (3, 6, 12, 24 and 48 h) of different water temperatures (15, 20 and 25℃) and salinities (30, 25, 20 and 15 psu) to understand reasons for the death of abalone exposed by low salinity water. In each water temperature, abalone spats that were exposed to low salinity water (less than 20 psu) for over 6 hours showed decrease in survival rate during recovery and those were exposed at the salinity of 15 psu for more than 24 hours all died. Histological observation showed expansion or damage of gills of the species which were exposed at less than 20 psu for over 6 hours. In case of abalones exposed at the salinity of 15 psu for over 24 hours, most gill tissues were destroyed. This result was glaringly obvious at a higher water temperature, lower salinity and longer exposure time. Accordingly, suffocation caused by damage of gills considered one of direct causes of the death.

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Section: 력이 강해 세포나 기관의 막을 공격하여 세포의 기능을 손상시unclassified

Recovery Rate and Histological Changes in the Gills of Juvenile Abalone Haliotis discus hannai by Exposure Time of Different Water Temperatures and Salinities

Park¹,

Kim²,

Lim³

et al. 2013

The Korean Journal of Malacology

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“…해양생물을 이용하여 EDCs의 독성을 평가하는데 사용되는 생물 지표로는 사망률, 성장, 행동, 분자생물학적 지표, 생화학 적 지표, 생리학적 지표, 생식지수, intersex 및 imposex등의 생식 지표 및 조직학적 지표 등이 있다 (Alzieu and Heral, 1984;Timmermans et al, 1996;Gauthier-Clerc et al, 2002;Lee and Park, 2007). (Fig.…”

Section: 저질로부터 영양물질을 여과섭식하며 각종 산업 및 생활 오염 물질의 유입이 쉬운 연안에 서식하기 때문에 각종unclassified

Change of Reproductive and Histological Biomarkers of Ruditapes philippinarum (Bivalvia: Veneridae) Exposed to Nonylphenol

Park¹,

Lee²

2011

The Korean Journal of Malacology

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This study was investigated to find out the change of reproductive and histological biomarkers of Ruditapes philippinarum exposed to nonylphenol (NP). Experimental period was 16 weeks. Experimental groups were composed of one control condition and three NP exposure conditions (0.05, 0.1, 0.2 mg NP L -1 ). Gonad index was higher in exposure group than control in female and higher in control than exposure group in male. Intersexuality in the NP exposure group was 14.56% with male exhibiting higher ratio than female. Histological analysis of organ system illustrated expansion of hemolymph sinus, loss of striated border of inner epidermis and degeneration of mucous cell in the mantle. In the gill partially disappearance of frontal and lateral cilia, degeneration of mucous cell were observed. Also, hyperplasia of epithelium and disappearance of striated border were observed in the foot. As the concentration of NP increased, the accumulation of lipofuscin increased in the digestive gland. The results of this study suggest that NP induces reduction of survival rate, histopathology and intersex of R. philippinarum. Furthermore, it is indentified that NP functions as an estrogenic effector on the reproduction of R. philippinarum.

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“…Trace elements may interfere with the variation of physiological parameters related to the organism's wellbeing (Yatoo et al 2013). In the case of bivalves, several works have reported high consumption of glycogen, lipids and proteins in response to environmental contamination (Hamza-Chaffai 2014, Luna-Acosta et al 2015, leading to changes in the condition index (Cravo et al 2012) and eventually in the gametogenesis cycle (Breitwieser et al 2016, Gauthier-Clerc et al 2002. According to Mantel and Farmer (1983), metal exposure may alter the fluid ion level in clams, causing the decrease of Na + , Cl -and K + contents as a compensatory process in the internal osmolarity regulation.…”

Section: Introductionmentioning

confidence: 99%

Enhanced trace element concentrations in tissues of the clam <em>Ruditapes decussatus</em> transplanted to areas influenced by human activities (Ria Formosa, Portugal)

et al. 2017

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Summary:To examine the extent to which human activities near the Ria Formosa coastal lagoon influence the accumulation of trace elements (TE) in Ruditapes decussatus, individuals were transplanted from a natural bank located in the lower lagoon to three sites located in clam growth grounds under the influence of a small city (Faro), a fish farming centre (Olhão) and a site near the lagoon inlet (Lavajo). Concentrations were determined in substrate of the clam grounds and in the digestive gland, gills, mantle plus siphons, and remaining tissues of clams in four periods of the year. These measurements were accomplished with the monthly survey of the gametogenic stages, condition index, proteins, glycogen, total lipids, pH and osmolarity of hemolymph. Arsenic, Cu, Mn, V, Cr and Pb were preferentially linked to the digestive gland, while Cd was linked to the gills. TE concentrations in the digestive gland and remaining tissues were higher in winter, most likely reflecting additional inputs associated with rain. The lack of disruptions in biological parameters and the prolonged period of spawning and gonad recovery in clams suggest that the current TE availability in the lagoon has a minor influence on the reproductive cycle and hence on clam production. Keywords: trace elements; biological parameters; Ruditapes decussatus; Ria Formosa. Aumento de la concentración de elementos traza en tejidos de la almeja Ruditapes decussatus trasplantada a zonas influenciadas por actividades humanas (ría Formosa, Portugal)Resumen: Para examinar en qué medida las actividades humanas cercanas a la laguna costera ría Formosa influyen en la acumulación de elementos traza (ET) en Ruditapes decussatus, se trasplantaron individuos desde un banco natural situado en la parte baja de la laguna a tres sitios localizados en zonas de cultivo de almejas bajo la influencia de una ciudad pequeña (Faro), un centro piscícola (Olhão) y cerca de la entrada de una laguna (Lavajo). Se determinaron las concentraciones de ET en el substrato de locales y en la glándula digestiva, branquias, manto más sifones, y en los tejidos restantes de las almejas en cuatro períodos a lo largo de un año. Estas mediciones fueron realizadas con el estudio mensual de las etapas gametógenas, índice de condición, proteínas, glicóneo, lípidos totales, pH y osmolaridad de la hemolinfa. El As, Cu, Mn, V, Cr y Pb fueron relacionados preferencialmente a la glándula digestiva, mientras que el Cd fue a las branquias. La concentración de ET en la glándula digestiva y los tejidos restantes fue más elevada en invierno, probablemente reflejando los aportes adicionales asociados con la lluvia. La falta de alteraciones de los parámetros biológicos, el período prolongado de desove y la recuperación de las gónadas en las almejas sugieren que la disponibilidad actual de ET en la laguna tienen una influencia menor durante el ciclo reproductivo y, por lo tanto, en la producción de almejas.

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Delayed gametogenesis of Mya arenaria in the Saguenay fjord (Canada): a consequence of endocrine disruptors?

Cited by 49 publications

References 24 publications

Recovery Rate and Histological Changes in the Gills of Juvenile Abalone Haliotis discus hannai by Exposure Time of Different Water Temperatures and Salinities

Recovery Rate and Histological Changes in the Gills of Juvenile Abalone Haliotis discus hannai by Exposure Time of Different Water Temperatures and Salinities

Change of Reproductive and Histological Biomarkers of Ruditapes philippinarum (Bivalvia: Veneridae) Exposed to Nonylphenol

Enhanced trace element concentrations in tissues of the clam <em>Ruditapes decussatus</em> transplanted to areas influenced by human activities (Ria Formosa, Portugal)

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