Saúl Jaime Serrano Guzmán | Universidad del Mar (original) (raw)
Papers by Saúl Jaime Serrano Guzmán
AquaTechnica Revista Iberoamericana de Acuicultura
Se evaluó el efecto en la nutrición de la sustitución de la harina de pescado por la de cianobact... more Se evaluó el efecto en la nutrición de la sustitución de la harina de pescado por la de cianobacteria S. subsalsa en un cultivo de caracol manzana Pomacea bridgesii, donde se utilizaron 60 organismos a los cuales se les suministraron dos dietas (A y B) de alimento balanceado: una adicionada con harina de S. subsalsa (A) y la otra sin S. subsalsa con harina de pescado (B). El cultivo se realizó en un sistema de recirculación conformado por seis unidades de cultivo, durante un periodo de diez semanas. Para evaluar la eficiencia de las dietas se utilizó la tasa de crecimiento absoluta (TAC), con un valor de 0,168 ± 0,011 para A y 0,162 ± 0,009 para B, la tasa de crecimiento específica (TEC), con un valor de 1,417 ± 0,013 para A y 1,416 ± 0,065 para B, en cuanto al factor de conversión alimenticia (FCA), se obtuvo un valor de 1,52 ± 0,11 para A y 1,33 ± 0,08 para B. Se realizó un análisis de varianza para la TAC y TEC, entre los tratamientos A y B, sin encontrar diferencias significativ...
Revista de Biología Tropical, 2014
Variability in the relative abundance, size structure and sex ratio of the dolphinfish Coryphaena... more Variability in the relative abundance, size structure and sex ratio of the dolphinfish Coryphaena hippurus (Pisces: Coryphaenidae) in the Gulf of Tehuantepec, México. The dolphinfish (Coryphaena hippurus), is an oceanic epipelagic fish found worldwide in tropical and subtropical waters, with a high dispersal capability via large-scale migrations. This fast-swimming top-level predator is abundant in the Gulf of Tehuantepec, where it is caught incidentally by artisanal fisheries, and represents a target species for both recreational and commercial fisheries in Mexico, Ecuador, Peru and Central America. Nowadays, local fishery information on this species is scarce, thus our objective was to analyze the size structure by sex and the catchper-unit-effort (CPUE) tendency of dolphinfish caught in the Gulf of Tehuantepec, from 2000 to 2007. For this, fishery catches information was obtained from the artisanal fleet, at six landing sites in the Gulf, and the sex ratio, fork length (FL) and the catch per unit effort (CPUE) were estimated. From all sampling sites, a total of 3 494 females, and 3 877 males were obtained, and dolphinfish size as fork length (FL) ranged from 20.5 to 152cm. Fish size ranged from 25.5 to 148cm furcal length (FL) in males, and 20.5 to 129cm FL in females. The sex ratio (males:females) was 1:1, except in April-May (1:1.5, p<0.05) and November (1:0.5, p<0.05). The sex ratio at different size classes showed a significant bias towards females at smaller sizes (<75cm FL), whereas the males were predominant in larger size classes (>100cm FL). The size structure was bimodal, with a variation in the size average; the modes were defined as the small group (FL=50-55cm) and the large size group (FL=100-110cm). The CPUE showed seasonal changes: values were high for the November-December period, and values were lower for July-August. The seasonal and inter annual variation in the abundance of dolphinfish is probably related to a pre-spawning migration in close relation to the rain-drought regime characteristic of the region, and the associated wind upwelling season of "Tehuanos" in the Gulf of Tehuantepec. Rev. Biol. Trop. 62 (2): 611-626. Epub 2014 June 01.
Revista Ciencias Marinas y Costeras, Dec 31, 2012
resultaron afectadas por diferencias en la calidad hidrológica (temperatura superficial, salinida... more resultaron afectadas por diferencias en la calidad hidrológica (temperatura superficial, salinidad, oxígeno disuelto y turbidez) y la pérdida en la cobertura de manglar. Las mejores condiciones hidrológicas con extensas áreas de manglar fueron observadas en las lagunas Oriental y Occidental, donde el 97% de la captura artesanal de camarón fue obtenida. Las peores condiciones hidrológicas con escasas áreas de manglar fueron registradas al interior (0.35%) y en la entrada (0.85%) del Mar Tileme, donde la captura artesanal de camarón fue escasa, registrando una tasa de mortalidad natural de 0.82 mensual. El período analizado fue de 1999 al 2007, pero de acuerdo con los antecedentes bibliográficos, el reclutamiento marino de camarones juveniles en este sistema lagunar comenzó a descender en el Golfo de Tehuantepec, durante los años ochenta. La presión por pesca fue modificada por las condiciones ambientales imperantes en cada sección del cuerpo lagunar, esta fue "muy baja" en el Mar Tileme, "alta" en las lagunas Oriental y Occidental y "baja" en la Laguna Inferior.
Revista de biología …, 2002
The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Al... more The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Alotengo tropical lagoon system in Oaxaca, Mexico, were studied from February to September of 1997. An abundance analysis showed significant temporal and spatial ...
Revista de biología tropical
The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Al... more The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Alotengo tropical lagoon system in Oaxaca, Mexico, were studied from February to September of 1997. An abundance analysis showed significant temporal and spatial differences (Kruskal-Wallis, p < 0.001). Two spatial groups of abundance were found in the area, one from the mouth of the lagoon system to the middle of the Pen-shell bank, and the other between the middle of the Pen-shell bank and the head of the system. Three temporal periods of abundance were found (February-April-May; July-August; March-June-September). The distribution of population size showed that benthic recruitment of A. maura occurred from February to July. Length frequency of A. maura is commonly wide-ranging; nevertheless, in this study Pen-shell organisms with a valve length of 15 cm were frequently found. The growth rate length was 3.7 cm/month during the dry season (February to May), and 3.5 cm/month during the ...
![Research paper thumbnail of [Reproductive cycle of the mollusk Atrina maura (Pterioidea: Pinnidae) in a coastal lagoon system of the Mexican South Pacific]](https://attachments.academia-assets.com/83756244/thumbnails/1.jpg)
](Revista de biología tropical
From February 1997 to February 1998, random samples of the mollusk Atrina maura were collected on... more From February 1997 to February 1998, random samples of the mollusk Atrina maura were collected on a monthly basis from the Corralero-Alotengo lagoon system, Oaxaca, Mexico. The soft parts were separated from the valve, washed in situ, and placed in a Davison solution. The gonadosomatic index (GSI) and the muscle yield index (MYI) were measured, and the reproductive cycle was characterized by histological cuts. A. maura has two important reproductive periods, one from April to July and another from October to November; there is a resting period from August to September. The reproductive cycle has a direct relationship with the GSI and a reverse relationship with the MYI. There was evidence of a close relationship of the spawning and post-spawning periods with the water temperature (R = 0.991, p > 0.002). Females dominate numerically throughout the year, but the difference is significant (chi2: p > or = 0.05) only in November.
Analyse prospective des relations morphométriques de Pinna rugosa Sowerby, 1835 (BIVALVIA: PINNID... more Analyse prospective des relations morphométriques de Pinna rugosa Sowerby, 1835 (BIVALVIA: PINNIDAE) au Corralero-Alotengo, Oaxaca, Mexique. Trente quatre exemplaires de P. rugosa recueillie dans le système lagunaire Corralero-Alotengo, par plonge autonome, pendant 1997, ont été reconnu de manière macroscopique (mâle, femelle e indifférencié) et mesurés individuellement sur leur longitude antepostérieur (LAP), pesées intégralement a l'état frais (PFT), en distinguant la pesée fraîche du muscle abducteur (PFM), pour établir les relations morphométriques LAP-PFT, LAP-PFM et PFT-PFM, et inférer sur le type de croissance (isométrique o halométrique: positive A+, ou négative A-) et le taux intrinsèque de croissance (TIC). Quand les individus, ne sont pas encore différencié sexuellement, la 2 relation LAP-PFT est potentielle (R = 0.867) et isométrique (TIC = 3.476); 2 et va de exponentielle (R = 0.949) ]à 2 potentielle (R = 0.911) A + (TIC = 3.753) pour les femelles, sans différences significatives entre les deux groupes. La croissance entre LAP-PFM, d'indifférencié et de 2 femelles est exponentiel (R = 0.950-0.993), analogue a une croissance potentielle A + (TIC = 5.292 en indifférencié et TIC=6.462 en femelles), avec de majors TIC pour les femelles. La relation PFT-PFM de 2
Revista de biología …, 2007
Abstract: Reproductive cycle of the mollusk Atrina maura (Pterioidea: Pinnidae) in a coastal lago... more Abstract: Reproductive cycle of the mollusk Atrina maura (Pterioidea: Pinnidae) in a coastal lagoon system of the Mexican South Pacific. From February 1997 to February 1998, random samples of the mollusk Atrina maura were collected on a monthly basis from the ...
Journal of Shellfish Research, 2007
... 1986, Lutz & Kennish 1992, Nair & Appukutan 2004). Perna indica and Modiolus modiolus... more ... 1986, Lutz & Kennish 1992, Nair & Appukutan 2004). Perna indica and Modiolus modiolus are mussels with large metamorphosing pediveligersuch as M. capaxwhich also spawn relatively large eggs (Kuriakose 1980, Appukutan et al. ... 1064. Kuriakose, PS 1980. ...
AquaTechnica Revista Iberoamericana de Acuicultura
Se evaluó el efecto en la nutrición de la sustitución de la harina de pescado por la de cianobact... more Se evaluó el efecto en la nutrición de la sustitución de la harina de pescado por la de cianobacteria S. subsalsa en un cultivo de caracol manzana Pomacea bridgesii, donde se utilizaron 60 organismos a los cuales se les suministraron dos dietas (A y B) de alimento balanceado: una adicionada con harina de S. subsalsa (A) y la otra sin S. subsalsa con harina de pescado (B). El cultivo se realizó en un sistema de recirculación conformado por seis unidades de cultivo, durante un periodo de diez semanas. Para evaluar la eficiencia de las dietas se utilizó la tasa de crecimiento absoluta (TAC), con un valor de 0,168 ± 0,011 para A y 0,162 ± 0,009 para B, la tasa de crecimiento específica (TEC), con un valor de 1,417 ± 0,013 para A y 1,416 ± 0,065 para B, en cuanto al factor de conversión alimenticia (FCA), se obtuvo un valor de 1,52 ± 0,11 para A y 1,33 ± 0,08 para B. Se realizó un análisis de varianza para la TAC y TEC, entre los tratamientos A y B, sin encontrar diferencias significativ...
Revista de Biología Tropical, 2014
Variability in the relative abundance, size structure and sex ratio of the dolphinfish Coryphaena... more Variability in the relative abundance, size structure and sex ratio of the dolphinfish Coryphaena hippurus (Pisces: Coryphaenidae) in the Gulf of Tehuantepec, México. The dolphinfish (Coryphaena hippurus), is an oceanic epipelagic fish found worldwide in tropical and subtropical waters, with a high dispersal capability via large-scale migrations. This fast-swimming top-level predator is abundant in the Gulf of Tehuantepec, where it is caught incidentally by artisanal fisheries, and represents a target species for both recreational and commercial fisheries in Mexico, Ecuador, Peru and Central America. Nowadays, local fishery information on this species is scarce, thus our objective was to analyze the size structure by sex and the catchper-unit-effort (CPUE) tendency of dolphinfish caught in the Gulf of Tehuantepec, from 2000 to 2007. For this, fishery catches information was obtained from the artisanal fleet, at six landing sites in the Gulf, and the sex ratio, fork length (FL) and the catch per unit effort (CPUE) were estimated. From all sampling sites, a total of 3 494 females, and 3 877 males were obtained, and dolphinfish size as fork length (FL) ranged from 20.5 to 152cm. Fish size ranged from 25.5 to 148cm furcal length (FL) in males, and 20.5 to 129cm FL in females. The sex ratio (males:females) was 1:1, except in April-May (1:1.5, p<0.05) and November (1:0.5, p<0.05). The sex ratio at different size classes showed a significant bias towards females at smaller sizes (<75cm FL), whereas the males were predominant in larger size classes (>100cm FL). The size structure was bimodal, with a variation in the size average; the modes were defined as the small group (FL=50-55cm) and the large size group (FL=100-110cm). The CPUE showed seasonal changes: values were high for the November-December period, and values were lower for July-August. The seasonal and inter annual variation in the abundance of dolphinfish is probably related to a pre-spawning migration in close relation to the rain-drought regime characteristic of the region, and the associated wind upwelling season of "Tehuanos" in the Gulf of Tehuantepec. Rev. Biol. Trop. 62 (2): 611-626. Epub 2014 June 01.
Revista Ciencias Marinas y Costeras, Dec 31, 2012
resultaron afectadas por diferencias en la calidad hidrológica (temperatura superficial, salinida... more resultaron afectadas por diferencias en la calidad hidrológica (temperatura superficial, salinidad, oxígeno disuelto y turbidez) y la pérdida en la cobertura de manglar. Las mejores condiciones hidrológicas con extensas áreas de manglar fueron observadas en las lagunas Oriental y Occidental, donde el 97% de la captura artesanal de camarón fue obtenida. Las peores condiciones hidrológicas con escasas áreas de manglar fueron registradas al interior (0.35%) y en la entrada (0.85%) del Mar Tileme, donde la captura artesanal de camarón fue escasa, registrando una tasa de mortalidad natural de 0.82 mensual. El período analizado fue de 1999 al 2007, pero de acuerdo con los antecedentes bibliográficos, el reclutamiento marino de camarones juveniles en este sistema lagunar comenzó a descender en el Golfo de Tehuantepec, durante los años ochenta. La presión por pesca fue modificada por las condiciones ambientales imperantes en cada sección del cuerpo lagunar, esta fue "muy baja" en el Mar Tileme, "alta" en las lagunas Oriental y Occidental y "baja" en la Laguna Inferior.
Revista de biología …, 2002
The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Al... more The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Alotengo tropical lagoon system in Oaxaca, Mexico, were studied from February to September of 1997. An abundance analysis showed significant temporal and spatial ...
Revista de biología tropical
The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Al... more The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero-Alotengo tropical lagoon system in Oaxaca, Mexico, were studied from February to September of 1997. An abundance analysis showed significant temporal and spatial differences (Kruskal-Wallis, p < 0.001). Two spatial groups of abundance were found in the area, one from the mouth of the lagoon system to the middle of the Pen-shell bank, and the other between the middle of the Pen-shell bank and the head of the system. Three temporal periods of abundance were found (February-April-May; July-August; March-June-September). The distribution of population size showed that benthic recruitment of A. maura occurred from February to July. Length frequency of A. maura is commonly wide-ranging; nevertheless, in this study Pen-shell organisms with a valve length of 15 cm were frequently found. The growth rate length was 3.7 cm/month during the dry season (February to May), and 3.5 cm/month during the ...
Revista de biología tropical
From February 1997 to February 1998, random samples of the mollusk Atrina maura were collected on... more From February 1997 to February 1998, random samples of the mollusk Atrina maura were collected on a monthly basis from the Corralero-Alotengo lagoon system, Oaxaca, Mexico. The soft parts were separated from the valve, washed in situ, and placed in a Davison solution. The gonadosomatic index (GSI) and the muscle yield index (MYI) were measured, and the reproductive cycle was characterized by histological cuts. A. maura has two important reproductive periods, one from April to July and another from October to November; there is a resting period from August to September. The reproductive cycle has a direct relationship with the GSI and a reverse relationship with the MYI. There was evidence of a close relationship of the spawning and post-spawning periods with the water temperature (R = 0.991, p > 0.002). Females dominate numerically throughout the year, but the difference is significant (chi2: p > or = 0.05) only in November.
Analyse prospective des relations morphométriques de Pinna rugosa Sowerby, 1835 (BIVALVIA: PINNID... more Analyse prospective des relations morphométriques de Pinna rugosa Sowerby, 1835 (BIVALVIA: PINNIDAE) au Corralero-Alotengo, Oaxaca, Mexique. Trente quatre exemplaires de P. rugosa recueillie dans le système lagunaire Corralero-Alotengo, par plonge autonome, pendant 1997, ont été reconnu de manière macroscopique (mâle, femelle e indifférencié) et mesurés individuellement sur leur longitude antepostérieur (LAP), pesées intégralement a l'état frais (PFT), en distinguant la pesée fraîche du muscle abducteur (PFM), pour établir les relations morphométriques LAP-PFT, LAP-PFM et PFT-PFM, et inférer sur le type de croissance (isométrique o halométrique: positive A+, ou négative A-) et le taux intrinsèque de croissance (TIC). Quand les individus, ne sont pas encore différencié sexuellement, la 2 relation LAP-PFT est potentielle (R = 0.867) et isométrique (TIC = 3.476); 2 et va de exponentielle (R = 0.949) ]à 2 potentielle (R = 0.911) A + (TIC = 3.753) pour les femelles, sans différences significatives entre les deux groupes. La croissance entre LAP-PFM, d'indifférencié et de 2 femelles est exponentiel (R = 0.950-0.993), analogue a une croissance potentielle A + (TIC = 5.292 en indifférencié et TIC=6.462 en femelles), avec de majors TIC pour les femelles. La relation PFT-PFM de 2
Revista de biología …, 2007
Abstract: Reproductive cycle of the mollusk Atrina maura (Pterioidea: Pinnidae) in a coastal lago... more Abstract: Reproductive cycle of the mollusk Atrina maura (Pterioidea: Pinnidae) in a coastal lagoon system of the Mexican South Pacific. From February 1997 to February 1998, random samples of the mollusk Atrina maura were collected on a monthly basis from the ...
Journal of Shellfish Research, 2007
... 1986, Lutz & Kennish 1992, Nair & Appukutan 2004). Perna indica and Modiolus modiolus... more ... 1986, Lutz & Kennish 1992, Nair & Appukutan 2004). Perna indica and Modiolus modiolus are mussels with large metamorphosing pediveligersuch as M. capaxwhich also spawn relatively large eggs (Kuriakose 1980, Appukutan et al. ... 1064. Kuriakose, PS 1980. ...