Perkinsus marinus in Crassostrea gigas in the Gulf of California

Enríquez-Espinoza, TL; Chon, Jinhyung; Castro‐Longoria, Reina; Ramos-Paredes, Josefina

doi:10.3354/dao02199

Cited by 43 publications

(43 citation statements)

References 17 publications

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“…On other hand, the higher mortality values for all groups were observed in the same time period. It is well documented that summer mortality of Pacific oyster are associated to water temperature exceeding 20°C (Costil et al, 2005;Gagnaire et al, 2006) that in many cases, promote favorable conditions for pathogens as well (Enríquez-Espinoza et al, 2010). Therefore, it is possible assume that BW and survival of diploid and triploid oyster were strongly affected for the high water temperature during the first five cultivation months (summer).…”

Section: Discussionmentioning

confidence: 99%

Growth and economic performance of diploid and triploid Pacific oysters Crassostrea gigas cultivated in three lagoons of the Gulf of California

Villanueva-Fonseca

Góngora-Gómez

Domínguez-Orozco

et al. 2017

lajar

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ABSTRACT. Diploid and triploid Crassostrea gigas oysters were cultivated at three farms (Guasave, Navolato and Ahome) in Sinaloa, Mexico, to evaluate their growth and economic performances. Growth rate and survival of oysters were compared in long-line cultivation and were mostly affected by water parameters rather than ploidy or their interaction. The highest growth rates for shell length (8.01 mm month ) were obtained for the Ahome/triploid group. Survival differed significantly from 98.6% for the Guasave/triploids to 76.7% for the Ahome/diploids. After the first production cycle, more than 80% of production costs represent the purchase of cultivation equipment and salaries contributed with around 9%. The Guasave farm produced the highest profits (US$8,053.71 diploids, US$8,182.19 triploids). Use of diploids starting the production cycle on October-November to avoid mortality and improve final profit is recommended.

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Section: Discussionmentioning

confidence: 99%

Growth and economic performance of diploid and triploid Pacific oysters Crassostrea gigas cultivated in three lagoons of the Gulf of California

Villanueva-Fonseca

Góngora-Gómez

Domínguez-Orozco

et al. 2017

lajar

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“…Las mortalidades presentadas se atribuyen principalmente a una afección en los ostiones conocida como 'síndrome de mortalidad de verano' cuyo origen permanece aún desconocido. Algunas teorías basadas en la combinación e interacción de factores extrínsecos (bióticos y abióticos) e intrínsecos (genéticos, inmunológicos y fisiológicos), son usadas frecuentemente para explicar la drástica reducción de bivalvos en cultivo (Royer et al 2007, Enríquez-Espinoza et al 2010. Derivado de esfuerzos coordinados del gobierno con los productores y centros de investigación para tratar de conocer las causas de mortalidad en C. gigas, se ha concluido que la presencia de patógenos (Enríquez-Espinoza et al 2010, Vázquez-Yeomans et al 2010, Enríquez-Espinoza et al 2015 y/o la combinación de parámetros ambientales (Chávez-Villalba et al 2007, Castillo-Durán et al 2010 pueden estar asociados a la reducción del cultivo.…”

Section: Introductionunclassified

“…Algunas teorías basadas en la combinación e interacción de factores extrínsecos (bióticos y abióticos) e intrínsecos (genéticos, inmunológicos y fisiológicos), son usadas frecuentemente para explicar la drástica reducción de bivalvos en cultivo (Royer et al 2007, Enríquez-Espinoza et al 2010. Derivado de esfuerzos coordinados del gobierno con los productores y centros de investigación para tratar de conocer las causas de mortalidad en C. gigas, se ha concluido que la presencia de patógenos (Enríquez-Espinoza et al 2010, Vázquez-Yeomans et al 2010, Enríquez-Espinoza et al 2015 y/o la combinación de parámetros ambientales (Chávez-Villalba et al 2007, Castillo-Durán et al 2010 pueden estar asociados a la reducción del cultivo. No obstante, la erradicación de los patógenos y el control de las condiciones del medio ambiente son tareas imposibles, por lo que la única opción para los productores parece ser el seguimiento de buenas prácticas de cultivo para minimizar el impacto de las mortalidades (Enríquez-Espinoza et al 2010).…”

Section: Introductionunclassified

Relación del crecimiento, condición y supervivencia del ostión del Pacífico Crassostrea gigas y las variables ambientales, cultivado en suspensión en el sistema lagunar Navachiste-Macapule, Sinaloa, México

Rodríguez-Quiroz

García-Ulloa

Domínguez-Orozco

et al. 2016

Rev. biol. mar. oceanogr.

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ARTÍCULORelación del crecimiento, condición y supervivencia del ostión del Pacífico Crassostrea gigas y las variables ambientales, cultivado en suspensión en el sistema lagunar Navachiste-Macapule, Sinaloa, México Abstract.-Evaluation of potential culture sites represents a 'good practice' alternative to support the development of oyster industry at the northeast of Mexico. The relationship of growth, condition and survival of Crassostrea gigas with the environmental parameters was studied at the Navachiste-Macapule lagoon system (Sinaloa, Mexico) from November 2011 to November 2012. The culture was carried out using 2,520 small oysters (3.5 ± 0.5 mm shell height) in a suspended longline system. The environmental parameters and oyster biometrics were sampled each 15 days. The mean values were: temperature= 25.01 ± 5.29°C, dissolved oxygen= 6.10 ± 1.93 mg L , respectively. After 13 culture months, the shell height reached 95.05 ± 9.21 mm, length 85.64 ± 20.01 mm, width 28.76 ± 10.91 mm, and the total weight 83.58 ± 17.18 g. The daily growth rate for the shell height and total weight were 0.25 mm day -1 and 0.23 g day -1, respectively. Significant differences were found for the total weight and the shell metric values throughout the culture. The final survival and mean condition index were 94.72% and 34.65 ± 4.46, respectively. Water temperature exerted a positive stronger effect on shell height and total weight. Results show that C. gigas reached the commercial size (80 mm SH) after 8 months of culture under the environmental conditions of the Navachiste-Macapule lagoon system, Sinaloa, Mexico. Obtained data contribute with basic information on further studies and commercial production cycles of this species in the region.Key words: Culture, suspended plastic trays, growth rate, Crassostrea gigas, mortality, MexicoResumen.-La evaluación de nuevos lugares con potencial de cultivo en la industria ostrícola representa una 'buena práctica' que contribuye con el desarrollo de esta actividad en el noroeste de México. Se realizó un cultivo en suspensión (long-line) con el ostión Crassostrea gigas para estudiar la relación de su crecimiento, condición y supervivencia con las variables ambientales en el sistema lagunar Navachiste-Macapule (Sinaloa, México), de noviembre 2011 a noviembre 2012. Se utilizaron 2.520 semillas (3,5 ± 0,5 mm de altura de valvas). Las variables físicas y químicas del agua, y biométricas del ostión fueron registradas cada 15 días obteniendo los siguientes valores promedio: temperatura= 25,01 ± 5,29°C; oxígeno disuelto= 6,10 ± 1,93 mg L -1 ; salinidad= 32,88 ± 2.15; pH= 7,82 ± 0,39 y profundidad= 1,66 ± 0,55 m. Las concentraciones de sólidos suspendidos totales, materia orgánica particulada y clorofila a variaron de 41,94 a 125,22 mg L -1

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“…Enríquez-Espinoza et al [31] in Gulf of California estimated prevalence of 100% in Crassostrea gigas through RTFM assays. The estimated prevalence by Cáceres-Martínez et al [32] varied from 1 to 6% in Crassostrea corteziensis on the Pacific coast of Mexico.…”

Section: Discussionmentioning

confidence: 99%

“…Mollusc species have different responses to a pathogenic protozoan infection, and environmental factors such as temperature and salinity are involved in the infective process [31,35]. Perkinsosis is an illness associated with warm waters which is a characteristic of the northeastern region of Brazil.…”

Section: Discussionmentioning

confidence: 99%

Protozoan Parasite Perkinsus sp. Infecting Crassostrea rhizophorae From the Coast of Rio Grande do Norte (Northeast of Brazil)

Silva¹

2017

JAMB

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The aquatic environment facilitates the horizontal transmission of pathogenic agents. The protozoa parasites of the genus Perkinsus cause an epidemic disease of marine bivalves throughout the world, often causing mortality in populations of molluscs. This study reports for the first time the presence of Perkinsus sp. infecting Crassostrea rhizophorae from the coast of the state Rio Grande do Norte. The samples of mangrove oysters (Crassostrea rhizophorae) occurred in summer, in December (N = 10) of 2016, January (N = 40) and February (N = 40) of 2017 from the estuary Porto do Mangue. Two fragments of the gills were incubated in Ray's Fluid Thioglycollate Medium -RFTM. The ecological parameters parasitological were calculated. Were found parasitized five of the ninety oysters collected in porto do mangue estuary, which corresponded to a mean prevalence of perkinsose of 5.56%. The intensity of infection by perkinsose ranged from very light the mild.

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Perkinsus marinus in Crassostrea gigas in the Gulf of California

Cited by 43 publications

References 17 publications

Growth and economic performance of diploid and triploid Pacific oysters Crassostrea gigas cultivated in three lagoons of the Gulf of California

Growth and economic performance of diploid and triploid Pacific oysters Crassostrea gigas cultivated in three lagoons of the Gulf of California

Relación del crecimiento, condición y supervivencia del ostión del Pacífico Crassostrea gigas y las variables ambientales, cultivado en suspensión en el sistema lagunar Navachiste-Macapule, Sinaloa, México

Protozoan Parasite Perkinsus sp. Infecting Crassostrea rhizophorae From the Coast of Rio Grande do Norte (Northeast of Brazil)

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