Marcelo García-Guerrero
Instituto Politécnico Nacional
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Marcelo García-Guerrero.
Comparative Biochemistry and Physiology A-molecular & Integrative Physiology | 2003
Marcelo García-Guerrero; Humberto Villarreal; Ilie S. Racotta
The influence of temperature on biochemical composition, survival and duration of development of Cherax quadricarinatus from egg extrusion to juvenile was analyzed. Berried females were individually subjected to each of 22, 25, 28 and 31 degrees C (n=5 per temperature). Egg samples were obtained every 3 days from egg extrusion to juvenile stage for biochemical analysis. Duration of development and survival decreased with increasing temperature. At 22 and 25 degrees C half of the initial lipid content was consumed during development. At 28 and 31 degrees C, 80% of the initial amount of lipids was consumed. For proteins, depletion rate was significantly lower at 25 degrees C (36% of the initial amount) than at 22, 28 and 31 degrees C (61-65% of the initial amount). For carbohydrates, a significant consumption was observed only at 22 degrees C. Total energy consumption was lower at 22 and 25 degrees C than at 28 and 31 degrees C. We conclude that 22-25 degrees C is the optimal temperature range for C. quadricarinatus egg incubation, although 25 degrees C might be better in terms of development duration in terms of survival, energy cost and protein consumption.
Journal of Crustacean Biology | 2003
Marcelo García-Guerrero; Ilie S. Racotta; Humberto Villarreal
Eggs of 20 females were sampled to analyze lipid, protein, and carbohydrate content during the embryonic development of Cherax quadricarinatus. Sampling was performed on recently spawned eggs to first juvenile stage. Ten eggs were sampled every 48 h during the first two weeks and every 72 h thereafter for biochemical analysis. Total proteins, lipids, and carbohydrates were measured. Proteins were the most abundant egg component (63.2%), followed by lipids (32.3%), and carbohydrates (4.4%). A steady decrease of lipid content was observed (y 5 895.38 2 9.93x, r 2 5 0.94; y 5 lipid concentration, x 5 days). For proteins, two different depletion rates were observed, with the initial rate maintained for 30 days (y1 5 1,443.0 2 4.46x1, r 2 5 0.90) and an increased depletion rate after hatching (y2 5 1,936.60 2 21.10x2, r 2 5 0.96). Carbohydrates were always present as a minor constituent, and its concentration did not change significantly. Water content increased from 52% in recently spawned egg to 85% in juveniles. Energy equivalents were calculated from each component, and the overall energy expenditure is represented by the equation y 5 13.86 2 0.11x (r 2 5 0.95). Relevant morphological features for each sample day are indicated.
Journal of Crustacean Biology | 2004
Marcelo García-Guerrero; Michel E. Hendrickx
Abstract The complete embryonic development of the mangrove crabs Goniopsis pulchra and Aratus pisonii is described based on morphological features observable in live eggs. Periods of development are defined in steps of 48 hours each and in relation to the time of embryonic development. Eight periods were described and illustrated for Aratus pisonii and nine for Goniopsis pulchra. Embryo development from recently spawned eggs to hatching lasted 14 days for Aratus pisonii and 15 for Goniopsis pulchra at 26–28°C. The embryonic development of the two species was very similar; growth was synchronous, appendages were formed during the same periods, complexity of abdominal and ocular processes were chronologically comparable. Goniopsis pulchra eggs were slightly larger, while in Aratus pisonii the digestive gland was easier to observe in later periods and the telson grew larger. Cromatophores were more evident in Aratus pisonii embryos, especially those of the telson.
Crustaceana | 2009
Marcelo García-Guerrero; Michel E. Hendrickx
The embryonic changes during the development of the freshwater prawn, Macrobrachium americanum are described from observations made on live embryos based on the percentage-staging method. Eggs were observed with a stereomicroscope to obtain descriptions of embryonic periods. This prawn has an incubation time of 18 days at 24°C. Ten periods are described and illustrated. A comparison of this developmental process with those of congeneric species is included. Se describen los caracteres externos del desarrollo embrionario del langostino dulceacuicola Macrobrachium americanum tomando como criterio el metodo de estadios fijos basado en porcentajes. Los huevecillos fueron observados en vivo con un microscopio estereoscopico y se descibe cada periodo de desarrollo. Los huevecillos tardan 18 dias en incubarse a una temperatura de 24°C. Diez periodos se describen e ilustran. Se compara el desarrollo con el de algunas especies cercanas.
North American Journal of Aquaculture | 2008
Marcelo García-Guerrero; Juan Pablo Apún-Molina
Abstract Consumer demand for aquatic animals has led to increased interest in using new species for aquaculture purposes. This study appraises the potential for aquaculture of the cauque prawn Macrobrachium americanum using wild juveniles from the west coast of Mexico. Four treatments were applied; treatments A and B consisted of 196 prawns/m2 and treatments C and D of 98 prawns/m2, with and without shelter, respectively. Growth and survival under these conditions were examined for 84 d. The combination of 98 prawns/m2 and shelter resulted in the best survival and growth, whereas the poorest performance was in the treatment with 196 prawns/m2 and no shelter.
Journal of Crustacean Biology | 2007
José A. Cuesta; Marcelo García-Guerrero; Michel E. Hendrickx
Abstract The land crab Johngarthia planatus is an eastern tropical Pacific species with a known distribution from Mexico to Colombia. Complete larval development of the species is fully described and illustrated from laboratory-reared material. The five zoeal stages and the megalopa are compared with those of Gecarcinus lateralis lateralis from the Atlantic coast. Main differences for zoeal stages are observed in the carapace and telson lateral spines while minor differences are observed in the mouthparts setation. For the megalopa stage a difference in size of the third maxilliped exopod supports the separation of Johngarthia from Gecarcinus. A brief comparison of all known zoea I and megalopa stages of species of the Gecarcinidae is made, taking into account recent new descriptions.
Journal of the Marine Biological Association of the United Kingdom | 2005
Marcelo García-Guerrero; Michel E. Hendrickx; José A. Cuesta; Antonio Rodríguez
The pilumnid crab Pilumnus limosus is known from Gonzaga Bay, Baja California, Mexico, to Zorritos, Paita, Peru. Larvae from a female collected in the intertidal rocky shore in Mazatlan, south-eastern Gulf of California, Mexico, were reared in the laboratory from Zoea I to megalopa. A complete description and illustration of larval features is provided and a comparison with closely related species showing known larval development is presented. As in most species of this genus, P. limosus larval development consists of four zoeae. All features observed in P. limosus are similar to those of P. reticulatus and P. sayi. All those larvae have lateral processes on abdominal somites 2-5 (2 or 3 in other species); posteromarginal denticles on abdominal somites 2. 6 (absent in other species of the genus).
Crustaceana | 2007
Edilmar Cortés-Jacinto; Marcelo García-Guerrero; Fernando Vega-Villasante
[Growth and moulting cycle of the crab, Callinectes arcuatus were studied. Specimens were divided into four experimental groups, depending on size. A group of eyestalk-ablated crabs was also included. The smallest crabs had the largest increase in size on a percentage basis. The average growth of the crabs after moulting, as well as the soft crab condition, are reported and discussed. El ciclo de muda y crecimiento de la jaiba Callinectes arcuatus fueron estudiados. Los especimenes fueron divididos en cuatro grupos experimentales en funcion de la talla. Se incluyo un grupo adicional de jaibas ablacionadas. En terminos de porcentaje, las jaibas de menor talla tuvieron un incremento de talla mayor. El crecimiento promedio de las jaibas despues de la muda, asi como la fase de jaiba suave o mudada son reportados y discutidos., Growth and moulting cycle of the crab, Callinectes arcuatus were studied. Specimens were divided into four experimental groups, depending on size. A group of eyestalk-ablated crabs was also included. The smallest crabs had the largest increase in size on a percentage basis. The average growth of the crabs after moulting, as well as the soft crab condition, are reported and discussed. El ciclo de muda y crecimiento de la jaiba Callinectes arcuatus fueron estudiados. Los especimenes fueron divididos en cuatro grupos experimentales en funcion de la talla. Se incluyo un grupo adicional de jaibas ablacionadas. En terminos de porcentaje, las jaibas de menor talla tuvieron un incremento de talla mayor. El crecimiento promedio de las jaibas despues de la muda, asi como la fase de jaiba suave o mudada son reportados y discutidos.]
North American Journal of Aquaculture | 2011
Marcelo García-Guerrero; Javier Orduña-Rojas; Edilmar Cortés-Jacinto
Abstract Cauque prawns Macrobrachium americanum of four different weights were tested at different temperatures to determine the differences in their oxygen consumption. The prawns were studied in a closed respirometer system in individual assays of 30 min each. Temperature (18–30°C) had a noticeable effect on oxygen consumption for all weights of prawns; weight had a less significant effect. In all cases, the mass-specific oxygen consumption rate of small prawns was higher than that of large prawns for all of the temperatures studied.
Journal of the Marine Biological Association of the United Kingdom | 2006
Marcelo García-Guerrero; Antonio Rodríguez; Michel E. Hendrickx
The two zoeal and megalopal stages of Porcellana cancrisocialis are described and illustrated from laboratory-reared larvae. At an average temperature of 25°C, Zoea I of P. cancrisocialis lasted seven days before moulting to Zoea II which, in turn, lasted eight days to reach the megalopa. Larval features of P. cancrisocialis are compared with those of other species of Porcellana. Porcellana cancrisocialis exhibits similar but distinguishable features from those observed in Porcellana sigsbeiana and Porcellana platycheles. This species resembles P. sigsbeiana more than P. platycheles in the setation and aesthetasc pattern of Zoea I and II, but the relationships of these three species are not clear.