GUILLERMO RODRIGUEZ DOMINGUEZ

• M. S.
• >Research at Autonomous University of Sinaloa

Shrimp farmed for a long period pauses its growth because of changes in environmental conditions or the achievement of the pond's carrying capacity. A modification of the von Bertalanffy model has been suggested to describe seasonal or oscillatory growth. Multiple logistic function is another alternative. This study used data from three earthen pon...

Allometric length-weight relationships are traditionally analyzed using the Huxley model, which assumes a lognormal distribution of errors. Still, other models have been successfully evaluated to describe these relationships, and it has been found that the distribution of errors is not necessarily lognormal. Two data sets of carapace width and weig...

The growth of the Pacific white shrimp, Penaeus vannamei was analysed with data from nine earthen ponds in three aquaculture farms located at the mouth of the Gulf of California in the state of Sinaloa, Mexico. Each farm has a different source of water supply: marine, estuarine-freshwater, and estuarine-hypersaline. Growth was estimated with a mult...

Using data from 1991 to 2019, we develop a method to study hyperstable fished stocks relaxing the assumption of constant catchability, hence direct dependence of catch-per-uniteffort and biomass. Information criterion was used to choose the best model including a Cobb-Douglas function for gulf corvina (Cynoscion othonopterus), a sciaenid fish endem...

Catch and fishing effort data are generally available, hence surplus production models are commonly used to conduct assessments. However, hyperstability resulting from spawning aggregations (SA) pose challenges to determine status and inform management of many fisheries resources. Using data from 1991 to 2019, we develop a method to study hyperstab...

The crab fishery of the genus Callinectes is one of the most important fisheries in Mexico. Sonora and Sinaloa are the states on the eastern coast of the Gulf of California, the mainland coast. Sinaloa encompasses the greatest production in Mexico of these species, in particular the Bahía Santa Maria La Reforma (BSMR), supplying the most important...

Modeling individual growth in marine species for aquaculture encounters many difficulties when the species pauses its growth but resumes its later after the disrupting phenomenon (environmental or physiological) has been overcome. Seasonal or oscillatory growth has been addressed by modifying existing models, such as von Bertalanffy and Gompertz, t...

Recibida: 23 de julio 2023 Aceptada: 10 de enero 2024 RESUMEN. Se analizó el crecimiento relativo de langosta espinosa Panulirus gracilis, con un enfoque de selección multimodelo y la teoría de la información de Akaike. Se realizaron muestreos en capturas comerciales de langosta espinosa del sur de Sinaloa, México entre las temporadas de pesca de 2...

The crab’s fishery of the genus Callinectes is one of the most important fisheries in Mexico. Sonora and Sinaloa are the states in the eastern coast of the Gulf of California, the mainland coast. Sinaloa encompass the greatest production in Mexico of these species, in particular the Bahía Santa Maria La Reforma (BSMR), supply the most important cat...

The totoaba (Totoaba macdonaldi) is a sciaenid (croaker) fish endemic to the Gulf of California with high commercial importance. Because it was considered at risk of extinction (since 2021 it was reclassified as vulnerable by the IUCN), and aquaculture procedures were developed for restocking and commercial purposes. The present study was conducted...

Over the past decade, the fishery of Pacific hake, Merluccius productus (Ayres, 1855), has increased in the Gulf of California, Mexico; therefore, any biological–fisheries information is highly relevant for the management of this fishery, and information on age and individual growth would be fundamental to evaluate populations. The objective of the...

In Mexico, shrimp catch is the main fishing activity, and the second important species is the blue shrimp, Penaeus stylirostris. Specimens of P. stylirostris collected in 2016-2018 from inland waters (bay) and offshore (littoral) in the Santa María la Reforma lagoon (SMLR) system were analysed. The sexes were separated, and then individuals were me...

Las condiciones climáticas y oceánicas determinan el patrón de distribución de la merluza del Pacífico (Merluccius productus). El presente trabajo tuvo como objetivo conocer la relación espaciotemporal entre la distribución y la abundancia de la merluza del Pacífico y el ambiente en el golfo de California. Se analizó la información obtenida de 6 cr...

A stock reduction analysis (SRA) of bigeye croaker Micropogonias megalops was performed based on commercial catch data. SRA solutions were restricted to a 2011 bigeye croaker stock biomass estimate of 14,412 t. The viable solution indicated a reduction in stock of 73.6% from 1983 to 2020 with an initial biomass of 22,186 t. In addition, a possible...

The relative growth of Calappa convexa can be used to identify dimorphism or morphological change related to sexual maturation. The carapace width (CW) against width and length of the propodus of the right and left cheliped were tested to obtain a coefficient of allometry. CW against total wet weight WT values were analysed for length-weight relati...

In the present study, size-at-age data (length and weight) of marine cage-reared spotted rose snapper Lutjanus guttatus were analyzed under four different variance assumptions (observed, constant, depensatory, and compensatory variances) to analyze the robustness of selecting the right standard deviation structure to parametrize the von Bertalanffy...

Growth is an important life history trait that can be related to environmental features or can be implemented to characterize populations. This study examined growth by Schnute growth models based on length data for an edible intertidal invertebrate with indeterminate growth: Chiton articulatus. The geographical distribution of this species extends...

In the present study, weight-at-age data of reared Pacific white shrimp, Penaeus vannamei Boone, 1931, were analysed under four different assumptions of variance (observed, constant, depensatory, and compensatory variance) in order to analyse the robustness for selecting the right standard deviation structure to parametrize the Von Bertalanffy, Log...

Individual growth of the brown crab (Callinectes bellicosus) is analyzed using 24-month experimental molt data, information theory and Bayes theorem to infer the best model and parameter values and their uncertainties. The von Bertalanffy model fit best experimental data than the general von Bertalanffy and Gompertz models. No evidence was found of...

En México, el recurso pesquero más importante es Penaeus stylirostris (camarón azul), siendo aprovechado a su máximo sustentable. P. stylirostris es considerada por sus tallas máximas registradas, la especie de camarón prioritaria para la alimentación humana y muy cotizada en los mercados nacional (México) e internacional. El objetivo fue determina...

The spot prawn fishery, targeting Pandalus platyceros, has failed to prove commercially viable on the Mexican Pacific coast. A survey was carried out off the northwestern coast of Baja California, at depths of 140-180 m. The objective was to describe the biological traits of the species to test the hypothesis that warmer water stimulates higher growt...

Resumen La merluza del Pacífico, Merluccius productus (Ayres 1855), es un pez demersal del orden de los gadifor-mes, que se distribuye a lo largo del oeste del Pacífico norte, desde Canadá hasta el Golfo de California. Es una especie importante en el ecosistema y en la pesca. Desde 1980, en México se ha capturado al amparo de los permisos de pesca...

Objetivo. Se analizó la proporción de sexos, hembras ovígeras, talla de primera madurez sexual y fecundidad del cangrejo roca Grapsus grapsus en islas Lobos, Venados y Pájaros (sureste del Golfo de California). Material y métodos. Los muestreos fueron mensuales entre marzo 2011 y febrero 2012, las colectas fueron nocturnas durante la bajamar, se ob...

Length-frequency data of juveniles and sub-adults of Penaeus californiensis were analyzed, collected from January 2002 to January 2003 in the Agiabampo lagoon system and adjacent marine coastal zone. Six models were parameterized with four criteria, in addition to a mixed criterion (fat-tail and depensatory), to estimate the parameters that best fi...

The yellowlegs shrimp Penaeus californiensis is an oceanic species that approaches the coastal zone for its reproduction. However, in the southern Gulf of California, this species also enters coastal lagoons to grow and reproduce. To test the hypothesis that the growth of P. californiensis differs between these two environments, monthly samplings o...

En el sureste del golfo de California, en el estado de Sinaloa, la pesquería de las jaibas Callinectes arcuatus y C. bellicosus es la segunda más importante para los pescadores ribereños, después de la pesquería del camarón. Su captura se realiza durante casi todo el año, solo se suspende en los meses de su veda y al inicio de la temporada de pesca...

The present study analysed the size composition and fecundity of Grapsus grapsus (Linnaeus, 1758) in the intertidal regions of Guasayeye, La Ventana and San Lucas islands in Navachiste Bay, Sinaloa, Mexico. Samples were collected from November 2017 to October 2018 with a bimonthly periodicity and sampling stations were established in each island. C...

Chiton articulatus exhibited growth parameters (population size, number of size groups, number of cohorts, growth rate and longevity) divergent between annual cold “La Niña” (ACE) and annual warm “El Niño” (AWE) events. We used a multi-model inference approach (Schnute models), considering the size-structure and individual growth in the absence of...

To fit a growth model to Opisthonema libertate, the most common thread herring in a small pelagic fishery in the southern Gulf of California, size data of commercial landings and age were generated from sagittal otoliths assessed during three different years, 2005, 2008 and 2015, representing Neutral, La Niña and El Niño environmental conditions, r...

Middling thread herring O. medirastre is part of a small pelagic fish catches in the southern Gulf of California, where the fishery is certified as sustainable by the Marine Stewardship Council. The growth of this species is of great interest for the assessment and management of overall fisheries. Age-size data were generated in this research work...

La clase Polyplacophora conocida comúnmente como quitones, es un grupo de moluscos que, de manera general, han sido categorizados como herbívoros debido a la abundante disponibilidad de algas presentes en el medio que habitan. Sin embargo, estudios recientes con quitones analizan la anatomía del intestino, contenido estomacal, morfología radular y...

En poliplacóforos como Chiton articulatus la gónada es tubular, única y en posición dorsal-superior a la longitud. Durante la actividad reproductiva (madurez gonádica), la gónada aumenta el volumen y ejerce presión interna en tres dimensiones: largo, ancho y alto, lo cual comprime los órganos ventrales hacia el pie y empuja el conjunto colectivo de...

This study describes biometric characteristics of the pea crab Pinnaxodes gigas , a symbiont of the geoduck clam Panopea globosa in the eastern-central Gulf of California. Differences were observed in the coefficient of allometry when length-weight relationships (LWR) were analysed under a multi-model approach. The winner model for LWR in females w...

El objetivo de éste trabajo fue determinar la densidad óptima de siembra de Penaues vannamei, cultivado en un sistema intensivo foto-heterotrófico en estanques de engorda circulares revestidos, con un mínimo reemplazo de agua. Se consideraron cinco niveles de densidad (100, 300, 500, 700, y 900 org/mt3). La calidad del agua media durante el periodo...

Growth curves of Panopea globosa were compared from four zones in northwestern Mexico, with three zones in the Gulf of California (Guaymas, Puerto Peñasco, and San Felipe) and one zone on the Pacific Coast of the southern Baja California Peninsula (Bahía Magdalena). The curves were shaped using the von Bertalanffy growth model. The lengths-at-age d...

This work aimed to determine the optimum stocking density of Penaeus vannamei, cultured in a photo-heterotrophic intensive circular system inlined grow-out ponds with minimal water replacement. Five intensive density levels (100, 300, 500, 700 and 900 ind m-3) were considered. The water quality measured for the 98 days grow-out period was within th...

Objective: Perform a bioeconomic analysis of the fishery of jumbo squid fishery Dosidicus gigas in northwestern Mexico. Methodology: The population dynamics was modeled using Schaefer´s algorithm (1954). This was with two pairs of values for the intrinsic population growth rate (r). Those represents the increase of a population in a given period. A...

Reproductive studies of an intertidal free-spawning population of Chiton articulatus (Mollusca: Polyplacophora) from Puerto Angel, Oaxaca, Mexico were undertaken during 2011. We used gonad histology and gonadal indices to assess the relative gonad expenditure of the sexes (RGES) and other reproductive traits, accounting for individual and seasonal...

We examined the length-weight relationship (LWR) in Callinectes bellicosus (Stimpson, 1859) (Brachyura: Portunidae). The power model W = aLb is practically the only model used for allometry in aquatic animals, where the allometric coefficient b is considered as constant and determined by the overall size of the animal. We tested the hypothesis that...

The population dynamics of jumbo squid Dosidicus gigas from northwest Mexico was evaluated for the period 1974-2012 using Schaefer’s model, where model parameters were estimated with the catch maximum sustainable yield method (Catch-MSY) using two prior intrinsic population increase rate (r) range values (1.0 to 2.0 and 1.5 to 2.0). Estimated param...

In Mexico, swimming crabs are considered a strategic resource because it supports artisanal fishing when the main fish resource (shrimp) is in closed season. In "Marismas Nacionales" the blue crab fishery is relatively new, and the catches have been maintained due to the national demand and the availability of the resource. Individual growth, sexua...

The Upper Gulf of California and Colorado River Delta is a zone which is immersed in an ecological, economic, political and social conflict. That is because of the Totoaba Totoaba macdonaldi illegal fishing and the Vaquita Phocoena sinus potential extinction. This issue has driven to ban all the region’s fisheries with the exception of the Gulf cor...

The Upper Gulf of California and Colorado River Delta is a zone which is immersed in an ecological, economic, political and social conflict. That is because of the Totoaba Totoaba macdonaldi illegal fishing and the Vaquita Phocoena sinus potential extinction. This issue has driven to ban all the region’s fisheries with the exception of the Gulf cor...

The main purpose of this study was to review the growth models used in fish culture and demonstrate the benefit of using the most appropriate growth model for aquaculture studies. For this reason, another part of this study was to use a dataset from spotted rose snapper (Lutjanus guttatus Steindachner, 1869) cultured in floating cages to determine...

The fishing effort of a Sinaloa crab fishery in the Gulf of California in 2014 was analysed based on fishermen’s interviews, official catches and permits, and information from a sample of fishing logbooks from five fishery cooperatives operating in four coastal lagoons that contained the daily catch from individual fishing trips. Unauthorized gear,...

The Devil Ray (Mobula thurstoni) is a species with global distribution and is an important species in conservation terms, here we present its complete mitochondrial genome assembled with Illumina sequencing data. The circular genome was 17,610 bp in length, and consists of 13 protein-coding, two ribosomal RNAs (rRNAs), and 22 transfer RNA (tRNA) ge...

La evaluación de la estructura genética de una población sujeta a explotación puede generar información pertinente para la incorporación de estrategias de manejo y conservación. Se ha observado, que especies de invertebrados costeros que presentan poblaciones estructuradas derivadas de un bajo potencial de dispersión, tienden a ser susceptibles a l...

RESUMEN La curvina golfina, Cynoscion othonopterus, es una especie endémica del Alto Golfo de California, que actualmente está bajo una alta presión por pesca debido a que es el único re-curso de escama con permiso de explotación en la región. Por ello es necesario conocer sus parámetros y patrón de creci-miento, a fin de contribuir con el manejo s...

The gulf corvina Cynoscion othonopterus, is an endemic species of the upper Gulf of California, which is under a high pressure by fishing because is the only finfish resource with permission of exploitation in the region. Therefore, it is necessary to know its growth parameters and growth pattern to contribute to the sustainable management of the r...

The gulf corvine, Cynoscion othonopterus, is an endemic species of the upper Gulf of California, which is under a high pressure by fishing because is the only finfish resource with permission of exploitation in the region. Therefore, it is necessary to know its growth parameters and growth pattern so as to contribute to the sustainable management o...

The distribution forecasting to year 2050of geoduck Panopea globosa in the Gulf of California, was done, using the maximum entropy model (MaxEnt), in which 12 environmental variables were used. The MaxEnt model predicted potential habitat suitable for P. globosa with high success rates (AUC = 0.995). The most favorable habitat of P. globosa is loca...

The rocky intertidal communities are subjected to physical and biological processes that erode them, so species require robust armor for their protection. The chitons have an articulated natural armor that provides them protection and robustness; however erosion on its plates has been observed, which can affect their fitness condition and mobility....

In the present study we explored the effect of the tidal hour on the postlarvae abundance of the penaeid white-leg shrimp (Litopenaeus vannamei (Boone, 1931)) in three Mexican Pacific coastal lagoons. Correlation analysis of tidal hour against the hourly variation of the abundance of postlarvae was conducted in three regions of the Mexican Pacific;...

Uno de los principales productores pesqueros en méxico es sinaloa, donde destaca la pesquería de camarones y jaibas; en particular, las del género Callinectes, que se encuentran en ambos litorales de méxico, aunque, en la costa del pacífico, hay otras especies, como C. toxotes, C. arcuatus y C. bellicosus; las últimas dos sostienen una importante p...

Currently the crab fishery in the state of Nayarit is under development, yet basic fishery and biological data are needed to allow a proper management. The blue crab, Callinectes arcuatus, was sampled monthly during the fishing season from June to December 2014 from commercial catches in Marismas Nacionales, Nayarit, Mexico. Carapace width (ac) and...

La pesquería de jaiba en el estado de Nayarit, México, está en desarrollo y se tiene poca información para el manejo adecuado del recurso. Durante la temporada que va de junio a diciembre de 2014 se realizaron muestreos biológicos mensuales de jaiba azul, Callinectes arcuatus, desembarcada en Marismas Naciona-les, Nayarit. Se hicieron mediciones de...

El camarón de profundidad o gamba imperial (Pandalus platyceros, Brandt 1851) se distribuye en la zona del Pacífico noreste, en la costa oeste de América del Norte desde Alaska en las Islas Aleutianas, frente a la costa de Japón y en la costa occidental del estado de Baja California; no existiendo registros de su presencia al sur de Punta Eugenia,...

In the intertidal zone availability of substrate is limited and epibiosis frequently occurs. The epibiotic community of a basibiont (substrate organism) at the intertidal rockyshore depends on the basibiont species, season and region. In mollusks, the main basibionts reported belong to the classes Gastropoda, Bivalvia and in lesser degree to Polypl...

This study describes the growth parameters of males of the blue crab Callinectes arcuatus based on samples from a coastal lagoon in the southern Gulf of California and from individuals raised under controlled conditions. The models assessed were the four variants of the Schnute growth model and a special case of the von Bertalanffy model (VBGM). Th...

This study presents results on the collection of Panulirus inflatus pueruli in seaweed (GuSi; set at the surface) and crevice (Booth: set on the bottom) collectors from April to December 1998 in waters of the southeastern Gulf of California, Mexico. The collectors were deployed at two sites in Mazatlán Bay. A total of 15 pueruli and 26 post-pueruli...

This study evaluated the effect of the density at harvest on the performance and profitability of hatchery-reared spotted rose snapper cultured in cages. The fish were stocked at harvest densities of 15, 20, and 22 kg/m3 in cages of 222 and 286m3. More than 39,000 snapper fingerlings with an initial weight of 14 g were stocked. The fish were fed an...

This study examines how the size at maturity (CW50%) of Callinectes bellicosus Stimpson, 1859 is affected by environmental variability and by the source of the data. The samples were obtained from a coastal lagoon in the eastern Gulf of California between 2000 and 2003, and in 2011. To explore for interannual variation in environmental conditions,...

This study addresses variations of mtDNA and otolith morphometrics in Scomberomorus concolor and Scomberomorus sierra collected along the Mexican Pacific Coast and Gulf of California (GC) in 2002, 2007 and 2008. The catches of GC are reported without distinguishing species, serious problem account that S. concolor is included in the red list by the...

In this study, KimuraÕs likelihood ratio test was used to compare growth curves for Panopea generosa, Panopea globosa, Panopea zelandica, and Panopea abbreviata. The curves were generated from previous studies using the von Bertalanffy growth model (VBGM). Geoducks P. generosa and P. globosa are distributed throughout the northern hemisphere; the o...

Se utilizó el enfoque multimodelo para seleccionar el que mejor describa el crecimiento de organismos juveniles de la jaiba azul Callinectes arcuatus en cultivo utilizando como candidatos cinco casos del modelo de Schnute y el modelo oscilatorio (movb) de Somers. A pesar de la naturaleza oscilante de los datos de crecimiento en ambos sexos, el movb...

The species composition and variation in density (postlarvae m(-3)) of penaeid shrimp postlarvae were surveyed every 14 days in two zones of the Mexican Pacific coast; in the north (Mazatlan, 23 degrees N 106 degrees W) and south (Gulf of Tehuantepec, 15 degrees N 95 degrees W). Sampling coincided with full moon and new moon, and they were carried...

The objective of this study was to determine the maximum sustainable yield (MSY) of the crab fishery in the Gulf of California by applying the catch-MSY method. This fishery occurs in two states-Sonora and Sinaloa, along the mainland coast of the Gulf of California-and involves two species: Callinectes bellicosus and Callinectes arcuatus. The main...

The seasonal brood size of the spiny lobster Panulirus gracilis in Mexican waters (southeastern Gulf of California) was estimated for 259 ovigerous females caught in commercial tangle nets at depths ranging from 8-25 in during spring, summer, fall, and winter between March 1993 and March 1994. The number of eggs per individual ranged from 76,727 eg...

This study describes the size (carapace width, CW) at maturity of Callinectes bellicosus (Stimpson, 1859) based on samples from a coastal lagoon in the southern Gulf of California. The study was conducted since knowledge of the species in particular and the genus in general on the Pacific coast is scarce or non-existent and size at maturity is a ke...

We describe the growth of the Cortes geoduck Panopea globosa (Dall 1898) in the Central Gulf of California using a multimodel approach. Geoducks were collected from November 2008 to February 2010 as part of an experimental fishery off Guaymas, Sonora, Mexico. Their age was established using the acetate peel method. Individual growth was estimated b...

This study describes the growth parameters of Callinectes bellicosus based on samples from a coastal lagoon in the southern Gulf of California. A multi-model inference (MMI) approach is used for both sexes. The candidate models assessed were the Von Bertalanffy (VBGM), Gompertz, Logistic, and Schnute growth models. The criterion used to select the...

Recent, fervent international dialogue concerning the existence and magnitude of impacts associated with aquaculture has had both positive and negative outcomes. Aquaculture stakeholders have become sensitized to requirements for improved environmental management of aquaculture. On the other hand, in some cases aquaculture development has been nega...

Within the buffer zone of the Upper Gulf of California and Colorado River Delta Biosphere Reserve (established June 1993), the shrimp fishery is managed as a common and rational use resource, trying to minize the impact of fishing effort on both the resource and ecosystem. An analysis was thus made of potential catch quotas of Litopenaeus stylirost...

Within the buffer zone of the Upper Gulf of California and Colorado River Delta Biosphere Reserve (established June 1993), the shrimp fishery is managed as a common and rational use resource, trying to minize the impact of fishing effort on both the resource and ecosystem. An analysis was thus made of potential catch quotas of Litopenaeus stylirost...