Author: César Augusto Salinas Zavala

New records of Lolliguncula (Lolliguncula) argus Brakoniecki

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Roper, 1985 (Myopsida: Loliginidae) in northwestern Mexico

Nuevos registros de Lolliguncula (Lolliguncula) argus Brakoniecki

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Roper, 1985 (Myopsida: Loliginidae) en el noroeste de México

JASMIN GRANADOS AMORES CESAR AUGUSTO SALINAS ZAVALA (2013)

"Seven specimens of Lolliguncula (Lolliguncula) argus, were collected in the shrimp fisheries of the Gulf of California and five specimens from the western coast of Baja California Peninsula, deposited in the Santa Barbara Museum of Natural History (USA), are examined and reported. These records expand species geographic distribution range for approximately 950 km and report the maximum size of mantle length 38.8 mm for males and 60.8 mm for females. Morphometric data of the 12 collected specimens are presented, and species funnel organ and statoliths are described."

"Se reportan y examinan siete ejemplares de Lolliguncula (Lolliguncula) argus, recolectados en la pesquería de camarón del golfo de California y cinco ejemplares depositados en el Museo de Historia Natural de Santa Bárbara (USA), provenientes de la costa occidental de la península de Baja California Sur. Estos registros amplían la distribución geográfica de la especie aproximadamente 950 km y la máxima longitud de manto de 38.8 mm en machos y 60.8 mm en hembras. Se presentan datos morfométricos de los 12 ejemplares colectados y se describe el órgano del sifón y los estatolitos de la especie."

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Loliginidae, squid, statoliths, funnel organ, Gulf of California, Mexico calamar, estatolitos, órgano del sifón, golfo de California CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PECES Y FAUNA SILVESTRE DINÁMICA DE LAS POBLACIONES DINÁMICA DE LAS POBLACIONES

Valoración económica del servicio ecosistémico recreativo de playa en Los Cabos, Baja California Sur (BCS), México: Una aplicación del Método de Costo de Viaje

Economic valuation of recreational beach ecosystem service at Los Cabos, Baja California Sur (BCS), Mexico: An application of Travel Cost Method

MARIA VERONICA MORALES ZARATE Marco Antonio Almendárez Hernández Ismael Sánchez Brito César Augusto Salinas Zavala (2019)

"En Baja California Sur, la mayor derrama económica proviene del sector turístico, particularmente del ofrecido en el municipio de Los Cabos. Sin embargo, a pesar de que el servicio ecosistémico recreativo de playa es uno de los más conspicuos en el sistema, a la fecha se desconocen trabajos relacionados con la valoración de este servicio, así como del segmento de población que permita estimar el excedente al consumidor (EC). Con este objetivo, en el presente trabajo se consideraron los métodos de preferencias revelados (Costo de Viaje) aplicados a los visitantes y se calculó el excedente del consumidor de recreación de playa de Los Cabos como destino turístico. Para ello, se aplicó una encuesta bilingüe cerrada cara a cara a turistas que se hospedaron en hoteles con categorías de tres, cuatro y cinco estrellas en las localidades de San José del Cabo, Cabo San Lucas y el Corredor Turístico de Los Cabos. La muestra obtenida fue de 139 encuestas. Se estimó una función de demanda recreativa con el tratamiento econométrico de un modelo Poisson y reveló un resultado del EC de USD $588.24 por día en promedio y por estadía por visitante se calculó en USD$ 4,941.22 con un promedio de 8.4 días. El destino turístico de Los Cabos desde que se creó como polo de desarrollo ha funcionado para la diversificación de otros productos turísticos, como por ejemplo localidades cercanas, áreas naturales protegidas, “pueblos mágicos”, pesca deportiva, buceo. La implementación de políticas públicas alineadas a la sustentabilidad de los servicios recreativos en las diferentes zonas permitirá canalizar beneficios económicos e impactar en las esferas social, económica y ambiental de las comunidades locales."

"In Baja California Sur, the biggest economic spill comes from the tourism sector, particularly from the offered in Los Cabos. Despite the fact that the recreational beach ecosystem service is one of the most conspicuous in the system, to date, there are no studies related to the valuation of this service as well as the segment of population that allows estimating the consumer surplus (CS). The present study considered the methods of revealed preferences (Travel Cost) applied to the visitors and calculated the (CS) of Los Cabos beach recreation as a tourist destination. A closed face-to-face bilingual survey was applied to tourists who stayed in hotels with three, four and five star categories in the towns of San José del Cabo, Cabo San Lucas and el Corredor Turístico de Los Cabos. The sample obtained was 139 surveys. A recreational demand function was estimated with the econometric treatment of a Poisson model and revealed a CS result of USD $ 588.24 per day on average and per stay per visitor was calculated in USD $ 4,941.22 with an average of 8.4 days. This was estimated at USD $ 588.24 per day on average and per stay per visitor was estimated at USD $ 4,941.22 with an average of 8.4 days. Since Los Cabos created as a development pole has worked for the diversification of other tourist products, such as nearby localities, protected natural areas, “magic towns”, sport fishing, diving. The implementation of public policies aligned to the sustainability of recreational services in the different zones will allow channeling economic benefits and impact in the social, economic and environmental spheres of local communities."

Article

Excedente del consumidor, Costo de viaje, Preferencias reveladas, Servicios recreativos, Cabo San Lucas Consumer surplus, Travel cost method, Revealed preference method, Recreational services CIENCIAS SOCIALES CIENCIAS ECONÓMICAS ECONOMÍA SECTORIAL ECONOMÍA SECTORIAL. TURISMO ECONOMÍA SECTORIAL. TURISMO

HISTORIC DEVELOPMENT OF WINTER-WHEAT YIELDS IN FIVE IRRIGATION DISTRICTS IN THE SONORA DESERT, MEXICO

César Augusto Salinas Zavala SALVADOR EMILIO LLUCH COTA Ira Lee Fogel Popilsky (2006)

"The history of development of winter wheat cultivation in five irrigation districts in northwestern Mexico is analyzed. The accelerated growth of winter wheat yields in northwestern Mexico can be described by adjustment of the parameters of the logistic model. A common variation in the analyzed series exists, which is determined by the positive tendency of the series, a producto of the Green Revolution. This event explains 80% of the observed variation. Nevertheless, social and economic conditions, and regional geography, suggest differential development. Four agricultural developments are defined: Borders (Mexicali-San Luis-Río Colorado), Indigenous Agriculture (Ejidales Colonias Yaquis), Private Agriculture (Valle del Yaqui and Mayo), and Pioneers (Valle de Santo Domingo in Baja California Sur). The development of each group is compared with the national efficiency curve. The purpose is to compare wheat yields in the main irrigated valleys of northwestern Mexico during the Green Revolution and the following stabilization, based on social and historic events. The possibility of increasing productivity as a function of the historic maximum reached at regional and national levels is discussed."

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Irrigation, Winter Wheat, Yield CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS AGRONOMÍA CULTIVOS FORRAJEROS CULTIVOS FORRAJEROS

Periodo reproductivo del camarón café Farfantepenaeus californiensis (Holmes, 1900) en la laguna costera de Agiabampo, Sonora/Sinaloa, México

Reproductive period of the brown shrimp Farfantepenaeus californiensis (Holmes, 1900) in the Agiabampo coastal lagoon system, Sonora/Sinaloa, Mexico

EUGENIO ALBERTO ARAGON NORIEGA MERCEDES MARLENNE MANZANO SARABIA César Augusto Salinas Zavala ALMA ROSA GARCIA JUAREZ (2004)

"Los aspectos biológicos del camarón café Farfantepenaeus californiensis en las lagunas costeras son desconocidos ya que se ha clasificado como especie oceánica que puede o no penetrar a esos ecosistemas y, si lo hace, los abandona a tallas máximas de 35 mm de longitud total (LT). En años recientes se ha capturado camarón café en la laguna costera de Agiabampo, Sonora/ Sinaloa. El objetivo de este estudio fue describir el periodo reproductivo del camarón café en ese sistema lagunar costero. Se realizaron muestreos mensuales de enero a diciembre de 2002, durante cinco días continuos en los periodos de luna llena. Se hicieron lances con red de arrastre (15 m de relinga superior) durante el flujo y reflujo de marea en 24 estaciones georreferenciadas del interior de la laguna. Se capturaron 27,694 organismos con una relación macho:hembra de 4:3. De acuerdo con la proporción de hembras maduras se identificaron dos periodos reproductivos en el año: uno de junio a julio (verano) y el otro de octubre a noviembre (otoño). Sin embargo, la abundancia media de hembras maduras por hectárea fue 20 org ha–1 en verano y 2 org ha–1 en otoño. La talla media de las hembras maduras en verano (129.9 mm LT) fue significativamente menor (P < 0.05) que en otoño (134.5 mm LT). La talla de primera madurez fue igual en ambos periodos: 145 mm LT. Un resultado relevante obtenido sobre la biología de F. californiensis es la evidencia de que una fracción de la población madura dentro del sistema lagunar y presenta un solo desove importante al año."

"Knowledge of the biological role of the brown shrimp, Farfantepenaeus californiensis, in coastal lagoons is lacking. This species has been classified as oceanic that may or may not enter coastal lagoons in early stages and if it does, it migrates back to the ocean when it attains a size of 35 mm total length (TL). Recently, the brown shrimp has been caught in the Agiabampo coastal lagoon system, in Sonora/Sinaloa (Mexico), and the objective of this study is to describe the reproductive period of this species in that system. Monthly sampling campaigns were carried out from January to December 2002, during five consecutive days. Tows in 24 geopositioned stations were done during high and low tide using 15-m-wide trawl nets. A total of 27,694 organisms were analyzed, with a male:female ratio of 4:3. Based on the proportion of mature females, we determined two reproductive periods: one from June to July (summer) and another from October to November (autumn); however, the average abundance was 20 org ha–1 in summer and 2 org ha–1 in autumn. The average size of mature females was significantly smaller (P < 0.05) in summer (129.9 mm TL) than in autumn (134.5 mm TL). Size at first maturity was 145 mm TL in both periods. An important result that contributes to the biological knowledge of F. californiensis is evidence that part of the population matures inside this coastal lagoon and presents one important spawn deposition per year."

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reproducción, camarón café, Farfantepenaeus californiensis, Agiabampo reproduction, brown shrimp BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) DESARROLLO ANIMAL DESARROLLO ANIMAL

Morfología de la membrana coriónica de los huevos de Octopus bimaculoides y Octopus hubbsorum (Cephalopoda: Octopodidae)

Chorionic membrane morphology of the eggs of Octopus bimaculoides and Octopus hubbsorum (Cephalopoda: Octopodidae)

PABLO MONSALVO SPENCER CESAR AUGUSTO SALINAS ZAVALA TEODORO REYNOSO GRANADOS (2013)

"Los huevos recién desovados de Octopus bimaculoides y de O. hubbsorum son de forma ovocilíndrica, miden 10.1±1.4 y 2.1±0.1 mm de longitud, respectivamente. La envoltura del huevo consta de dos partes principales: la membrana coriónica (corion) y el pedúnculo coriónico. El corion del huevo de O. bimaculoides presenta una sola capa, de un grosor de 8 µm, con poros menores a 1 µm de diámetro y una arquitectura interna en conexión con el pedúnculo coriónico. El corion del huevo de O. hubbsorum tiene un grosor de 4 µm, sin poros y una arquitectura interna sin interconexión con el pedúnculo coriónico. El pedúnculo coriónico del huevo de O. hubbsorum presenta un ensanchamiento anular a 300 µm de la unión con el cuerpo principal del corion. El huevo de O. hubbsorum tiene un micrópilo en forma de cavidad circular profunda de 15 µm de diámetro, en el centro del polo mayor del corion. En este estudio se describe por primera vez que la microestructura morfológica del corion es distinta en los huevos de O. bimaculoides y O. hubbsorum."

"Recently spawned eggs of Octopus bimaculoides and O. hubbsorum are ovo-cylindrical in shape and have an average of 10.1±1.4 and 2.1±0.1 mm in length, respectively. The egg envelope consists of two main parts: the chorionic membrane (Chorion) and the chorionic peduncle. The chorion of O. bimaculoides eggs shows a single layer of 8 µm in thickness, with pores smaller than 1 µm in diameter, and the internal architecture of the chorion connects to the chorionic peduncle. The chorion of O. hubbsorum eggs has a thickness of 4 µm without pores, and the internal architecture of the chorion does not interconnect with the chorionic peduncle. The chorionic peduncle of O. hubbsorum eggs shows an annular width of 300 µm in the junction with the main body of the chorion. O. hubbsorum eggs have a micropyle shaped as a deep circular cavity, 15 µm in diameter in the center of the pole of the chorion. The micro-structure morphology of O. bimaculoides and O. hubbsorum eggs shows a differentiation between the chorion membranes, which is described in this study for the first time."

Article

Corion, morfología, Octopus bimaculoides, Octopus hubbsorum, ultraestructura. Chorion, morphology, Octopus bimaculoides, Octopus hubbsorum, ultraestructure. BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) EMBRIOLOGÍA ANIMAL

Taxonomic assessment of species of the genus Octopus from the northeastern Pacific via morphological, molecular and morphometric analyses

MARIANA DIAZ SANTANA ITURRIOS César Augusto Salinas Zavala Francisco J. García-Rodríguez Jasmín Granados Amores (2019)

"Species of the genus Octopus from the northeastern Pacific are ecologically and economically important; however, their taxonomy is confusing and has not been comprehensively assessed. In this study, we performed a taxonomic evaluation of these species considering the morphological characteristics of the original descriptions, a molecular analysis of partial COI-gene sequences, and a traditional morphometry analysis of nine body measurements. Several interesting findings were obtained with our results: for instance, we updated the diagnoses of some species by including characters such as the number of lamellae per demibranch and the presence of chromatophores in the visceral sac; we deposited partial COI-gene sequences of species that had not been incorporated into the GenBank repository; and according to the morphometric analysis, we confirmed that the lengths of arms I–IV are relevant to discriminate the species under study. The taxa evaluated were morphologically, molecularly and morphometrically well-delimited; however, features such as funnel organ shape and arm length proportions in regard to dorsal mantle length are either not included in the diagnosis of the genus Octopus or overlap with other genera. Hence, this information, combined with the results obtained from the molecular analysis, supports the generic re-assignation of two of the species evaluated."

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Aquaculture, Fisheries and Fish Science, Biodiversity, Marine Biology, Taxonomy, Zoology Octopod, Taxonomy, Species discrimination, Octopodidae, Taxonomic problems, Octopuses, Taxonomic tools BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) TAXONOMÍA ANIMAL TAXONOMÍA ANIMAL

Predatory flying squids are detritivores during their early planktonic life

Fernando Ángel Fernández-Álvarez Annie Machordom César Augusto Salinas Zavala Roger Villanueva (2018)

"Cephalopods are primarily active predators throughout life. Flying squids (family Ommastrephidae) represents the most widely distributed and ecologically important family of cephalopods. While the diets of adult flying squids have been extensively studied, the first feeding diet of early paralarvae remains a mystery. The morphology of this ontogenetic stage notably differs from other cephalopod paralarvae, suggesting a different feeding strategy. Here, a combination of Laser Capture Microdissection (LCM) and DNA metabarcoding of wild-collected paralarvae gut contents for eukaryotic 18S v9 and prokaryotic 16S rRNA was applied, covering almost every life domain. The gut contents were mainly composed by fungus, plants, algae and animals of marine and terrestrial origin, as well as eukaryotic and prokaryotic microorganisms commonly found in fecal pellets and particulate organic matter. This assemblage of gut contents is consistent with a diet based on detritus. The ontogenetic shift of diet from detritivore suspension feeding to active predation represents a unique life strategy among cephalopods and allows ommastrephid squids to take advantage of an almost ubiquitous and accessible food resource during their early stages. LCM was successfully applied for the first time to tiny, wild-collected marine organisms, proving its utility in combination with DNA metabarcoding for dietary studies."

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squids, early planktonic life BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) DESARROLLO ANIMAL DESARROLLO ANIMAL

New record and contribution to the knowledge of Neastacilla californica (Boone, 1918) (Isopoda, Arcturidae) on the west coast of Baja California, Mexico

ARMINDA MEJIA REBOLLO JUAN ALFREDO ZAYAS ALVAREZ MARIA VERONICA MORALES ZARATE César Augusto Salinas Zavala (2018)

"Information concerning Neastacilla californica is currently scarce. In fact, its distribution range is not yet well defined; this species is currently reported from Point Conception to Point Loma along the California coast, USA, and also in the Gulf of California, Mexico. In this note, we present a new zoogeographical record of N. californica with information derived from a sample of taken in July 2012 during a monitoring expedition in the area inside of the Guerrero Negro Lagoon, at Peninsula de Baja California, Mexico, at 4.3 latitudinal degrees from the southernmost point reported on the Pacific coast. Additionally, we present a comparative summary of the main diagnostic features of this species and a series of photographs that allow observing characteristics of N. californica, contributing to the knowledge of the species."

Article

Neastacilla californica, new record, Guerrero Negro Lagoon, Baja California, Mexico. BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) ECOLOGÍA ANIMAL ECOLOGÍA ANIMAL

An empirical relationship between sea surface temperature and massive stranding of the loggerhead turtle (Caretta caretta) in the Gulf of Ulloa, Mexico

César Augusto Salinas Zavala MARIA VERONICA MORALES ZARATE Raúl Octavio Martínez Rincón (2020)

"Two mass stranding events of loggerhead sea turtles (Caretta caretta) in the vicinity of the Gulf of Ulloa, Baja California Sur, Mexico, were analyzed during 2003-2006 and 2012-2014. Stranding events were related to the accumulation of consecutive days with lower sea surface temperature (SST) series for the corresponding periods using Pearson correlations. Our results showed that in both periods, a significant cross-correlation was observed between mass stranding and accumulation of consecutive days with temperatures below 18, 17, and 16°C, with a time lag of three to five months. Numerical evidence supports the hypothesis that although the loggerhead turtle mortality is caused by multiple factors under extreme cold events, the environment turns markedly unfavorable for these organisms. Side-effects on health and swimming behavior of the species C. caretta, compromise their ability to avoid obstacles or flee from predators, thus increasing their vulnerability to sickness or lethargy, and possibly leading to the massive stranding of weakened individuals or dead bodies to the beaches of the Gulf of Ulloa. Hence, while SST may not be the direct cause of turtle mortality, it can be a determining factor for the survival of this species."

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sea turtle, massive stranding, cold stunning, Pearson correlation, southern California CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PECES Y FAUNA SILVESTRE DINÁMICA DE LAS POBLACIONES DINÁMICA DE LAS POBLACIONES

ANNUAL PERMANENCY OF THE AMERICAN WHITE PELICAN Pelecanus erythrorhynchos IN ENSENADA DE ARIPES, BAJA CALIFORNIA SUR, MEXICO

Permanencia anual del pelícano blanco Pelecanus erythrorhynchos en la Ensenada de Aripes, Baja California Sur, México

César Augusto Salinas Zavala Eduardo Palacios Castro Renato Arturo Mendoza Salgado Edgar Santiago Amador Silva (2011)

"This is the first report of the American White Pelican (Pelecanus erythrorhynchos) residing over a three year and three month period at Ensenada de Aripes, Baja California Sur. The pelicans remained in the study area throughout the year. Some non-breeding individuals stay in the region, suggesting that the adults migrate to their nesting areas."

"Se documenta el primer reporte de la permanencia del pelícano blanco (Pelecanus erythrorhynchos) durante un periodo de tres años y tres meses en la Ensenada de Aripes, Baja California Sur, permaneciendo en los sitios de estudio todo el año. Algunos individuos no reproductivos permanecen en la región, esto sugiere que los adultos migran a sus sitios de crianza."

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Baja California Sur, migration, Pelecanus erythrorhynchos Baja California, migración, pelícano blanco BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) ORNITOLOGÍA ORNITOLOGÍA