Arturo George Zamora | Instituto Nacional de Pesca y Acuacultura (original) (raw)
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Papers by Arturo George Zamora
Acta Ichthyologica et Piscatoria, May 20, 2024
Aquaculture, 2011
Octopus maya is an endemic cephalopod from the Yucatán Peninsula in Mexico, with interest to deve... more Octopus maya is an endemic cephalopod from the Yucatán Peninsula in Mexico, with interest to develop their commercial culture. Like all cephalopods, protein is an important nutrient both for growing and energetic metabolism. This condition results in a high demand for protein and specifically for certain amino acids (AAs). In this study it is examined the effects of inanition and re-feeding on growth and AA content in soft tissue to detect the amino acid (AA) mobilization to identify the principal metabolic reserves in juvenile O. maya. After 25 days re-feeding of all starved groups, the octopuses were unable to reach the similar weight as the control group. However, SGR of some groups were greater than that of the controls, although the differences were not significant due to variability in the data. Therefore, it is assumed that the juveniles of O. maya would need a longer period of time to reach the control group. It is therefore demonstrated that juveniles of O. maya have a wide plasticity to tolerate, at least 10 days of food deprivation without any apparently physiological damage. Moreover, during inanition the juveniles of O. maya used preferentially Thr, Phe, Ile, Ala, Glu and Ser, suggesting a strong mobilization of both essential and non essential AA to maintain the homeostasis. Prove of that is that survival of the animals during fasting and re-feeding period was not affected by treatments.
Aquaculture Research, 2004
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![Research paper thumbnail of [Gonadic cycle of the American oyster Crassostrea virginica (Lamellibranchia: Ostreidae) in Mecoacán, Tabasco, México]](https://attachments.academia-assets.com/78149802/thumbnails/1.jpg)
](Revista de biologia tropical, 2003
The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource repres... more The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource represents a job source and incomes for fishermen. In Mexico the production is supported by Tabasco state, the first producer. However, the mexican landings of this bivalve had been dropped about 40% last ten years. By 1999, Tabasco presents a unique ban season fishery of oysters. This season was based in evaluation of gonadal development by visual observations of color and texture, larvae and seeds abundance. In 2000, the government set up two ban seasons in terms of evaluation of populations every year, without gonadal analysis. In general, exists different spawning seasons for American oyster, in accordance with the environmental conditions. It is necessary to establish a ban season according to reproductive cycle. This study presents the gonadic cycle for an oyster population of Mecoacin lagoon along a year. It was defined five phases of the gonad development: resting, gametogenesis, matur...
Revista De Biologia Tropical, 2017
The Mexican oyster fishery, 90% supported by the coastal lagoons of the Gulf of Mexico, has decre... more The Mexican oyster fishery, 90% supported by the coastal lagoons of the Gulf of Mexico, has decreased drastically in the last six years as a result of anthropogenic pollution and improper management. The mussel Ischadium recurvum has proliferated and competes with oysters for space and probably food. Crassostrea virginica and Ischadium recurvum were studied to evaluate somatic production with biometry and physiological condition indices (PCI's) during an annual cycle. A random sample of 200 organisms was taken montly for each species. Condition indices wet flesh weigth: wet shell weight ratio (WFW/WSW), dry flesh weight: wet flesh weight ratio (DFW/WFW), dry flesh wet: dry shell weight ratio (DFW/DSW), an d ash free dry weight: tissue dry weight (AFDW/TDW) were calculated. In order to stablish physiological condition and temporal variability, these indices were compared between species and months. The somatic production of mussels was higher than in oysters. This enhancement in ...
The american oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource repres... more The american oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource represents a job source and incomes for fishermen. In Mexico the production is supported by Tabasco state, the first producer. However, the mexican landings of this bivalve had been dropped about 40% last ten years. By 1999, Tabasco presents a unique ban season fishery of oysters. This season was based in evaluation of gonadal development by visual observations of color and texture, larvae and seeds abundance. In 2000, the government set up two ban seasons in terms of evaluation of populations every year, without gonadal analysis. In general, exists different spawning seasons for american oyster, in accordance with the environmental conditions. It is necessary to establish a ban season according to reproductive cycle. This study presents the gonadic cycle for an oyster population of Mecoacan lagoon along a year. It was defined five phases of the gonad development: resting, gametogenesis, matur...
![Research paper thumbnail of [Gonadic cycle of the American oyster Crassostrea virginica (Lamellibranchia: Ostreidae) in Mecoacán, Tabasco, México]](https://attachments.academia-assets.com/78149803/thumbnails/1.jpg)
](Revista de biología tropical, 2003
The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource repres... more The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource represents a job source and incomes for fishermen. In Mexico the production is supported by Tabasco state, the first producer. However, the mexican landings of this bivalve had been dropped about 40% last ten years. By 1999, Tabasco presents a unique ban season fishery of oysters. This season was based in evaluation of gonadal development by visual observations of color and texture, larvae and seeds abundance. In 2000, the government set up two ban seasons in terms of evaluation of populations every year, without gonadal analysis. In general, exists different spawning seasons for American oyster, in accordance with the environmental conditions. It is necessary to establish a ban season according to reproductive cycle. This study presents the gonadic cycle for an oyster population of Mecoacin lagoon along a year. It was defined five phases of the gonad development: resting, gametogenesis, matur...
Acta Ichthyologica et Piscatoria, May 20, 2024
Aquaculture, 2011
Octopus maya is an endemic cephalopod from the Yucatán Peninsula in Mexico, with interest to deve... more Octopus maya is an endemic cephalopod from the Yucatán Peninsula in Mexico, with interest to develop their commercial culture. Like all cephalopods, protein is an important nutrient both for growing and energetic metabolism. This condition results in a high demand for protein and specifically for certain amino acids (AAs). In this study it is examined the effects of inanition and re-feeding on growth and AA content in soft tissue to detect the amino acid (AA) mobilization to identify the principal metabolic reserves in juvenile O. maya. After 25 days re-feeding of all starved groups, the octopuses were unable to reach the similar weight as the control group. However, SGR of some groups were greater than that of the controls, although the differences were not significant due to variability in the data. Therefore, it is assumed that the juveniles of O. maya would need a longer period of time to reach the control group. It is therefore demonstrated that juveniles of O. maya have a wide plasticity to tolerate, at least 10 days of food deprivation without any apparently physiological damage. Moreover, during inanition the juveniles of O. maya used preferentially Thr, Phe, Ile, Ala, Glu and Ser, suggesting a strong mobilization of both essential and non essential AA to maintain the homeostasis. Prove of that is that survival of the animals during fasting and re-feeding period was not affected by treatments.
Aquaculture Research, 2004
Skip to Main Content. ...
Revista de biologia tropical, 2003
The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource repres... more The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource represents a job source and incomes for fishermen. In Mexico the production is supported by Tabasco state, the first producer. However, the mexican landings of this bivalve had been dropped about 40% last ten years. By 1999, Tabasco presents a unique ban season fishery of oysters. This season was based in evaluation of gonadal development by visual observations of color and texture, larvae and seeds abundance. In 2000, the government set up two ban seasons in terms of evaluation of populations every year, without gonadal analysis. In general, exists different spawning seasons for American oyster, in accordance with the environmental conditions. It is necessary to establish a ban season according to reproductive cycle. This study presents the gonadic cycle for an oyster population of Mecoacin lagoon along a year. It was defined five phases of the gonad development: resting, gametogenesis, matur...
Revista De Biologia Tropical, 2017
The Mexican oyster fishery, 90% supported by the coastal lagoons of the Gulf of Mexico, has decre... more The Mexican oyster fishery, 90% supported by the coastal lagoons of the Gulf of Mexico, has decreased drastically in the last six years as a result of anthropogenic pollution and improper management. The mussel Ischadium recurvum has proliferated and competes with oysters for space and probably food. Crassostrea virginica and Ischadium recurvum were studied to evaluate somatic production with biometry and physiological condition indices (PCI's) during an annual cycle. A random sample of 200 organisms was taken montly for each species. Condition indices wet flesh weigth: wet shell weight ratio (WFW/WSW), dry flesh weight: wet flesh weight ratio (DFW/WFW), dry flesh wet: dry shell weight ratio (DFW/DSW), an d ash free dry weight: tissue dry weight (AFDW/TDW) were calculated. In order to stablish physiological condition and temporal variability, these indices were compared between species and months. The somatic production of mussels was higher than in oysters. This enhancement in ...
The american oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource repres... more The american oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource represents a job source and incomes for fishermen. In Mexico the production is supported by Tabasco state, the first producer. However, the mexican landings of this bivalve had been dropped about 40% last ten years. By 1999, Tabasco presents a unique ban season fishery of oysters. This season was based in evaluation of gonadal development by visual observations of color and texture, larvae and seeds abundance. In 2000, the government set up two ban seasons in terms of evaluation of populations every year, without gonadal analysis. In general, exists different spawning seasons for american oyster, in accordance with the environmental conditions. It is necessary to establish a ban season according to reproductive cycle. This study presents the gonadic cycle for an oyster population of Mecoacan lagoon along a year. It was defined five phases of the gonad development: resting, gametogenesis, matur...
Revista de biología tropical, 2003
The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource repres... more The American oyster Crassostrea virginica is exploited along Gulf of Mexico. This resource represents a job source and incomes for fishermen. In Mexico the production is supported by Tabasco state, the first producer. However, the mexican landings of this bivalve had been dropped about 40% last ten years. By 1999, Tabasco presents a unique ban season fishery of oysters. This season was based in evaluation of gonadal development by visual observations of color and texture, larvae and seeds abundance. In 2000, the government set up two ban seasons in terms of evaluation of populations every year, without gonadal analysis. In general, exists different spawning seasons for American oyster, in accordance with the environmental conditions. It is necessary to establish a ban season according to reproductive cycle. This study presents the gonadic cycle for an oyster population of Mecoacin lagoon along a year. It was defined five phases of the gonad development: resting, gametogenesis, matur...