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J. Fernando Márquez-Farías

J. Fernando Márquez-Farías
Facultad de Ciencias del Mar. Universidad Autonoma de Sinaloa.

PhD.

About

85
Publications
28,153
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1,454
Citations
Citations since 2016
30 Research Items
840 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Additional affiliations
February 2010 - June 2015
Universidad Autónoma de Sinaloa
Position
  • Professor (Full)

Publications

Publications (85)
Article
La raya mariposa Gymnura micrura es capturada directa e indirectamente en el golfo de México. Para conocer su historia de vida, se determinó la edad y se estimaron los parámetros de crecimiento en 96 hembras capturadas durante octubre 2015 a septiembre 2016. La edad se asignó siguiendo protocolos convencionales comparando los conteos entre lectores...
Article
Full-text available
Life-history studies of species discarded in fisheries are a low priority, particularly those of age and growth estimation. Consequently, almost everything is unknown about such species despite their having been caught as bycatch over the long term. In this study, age estimates were obtained by using the vertebrae of round stingrays (Urobatis halle...
Article
Full-text available
This study aimed to establish the distribution of As, Cd, Cu, Pb, and Zn, in the muscle and liver of the spotted ratfish Hydrolagus colliei from the northern Gulf of California to establish the bioaccumulation background data in this species. The individuals (n = 110) were obtained by bycatch from the Gulf of California hake fisheries, and the meta...
Article
Full-text available
This study aimed to establish the distribution of As, Cd, Pb, Cu, and Zn in the main tissues (muscle, liver, gonads, and gills) of the Pacific hake (Merluccius productus) from the northern Gulf of California to establish baseline bioavailability levels in the northern stock. The results for Pb and Cd were the lowest in the studied tissues (Pb < 0.0...
Article
Full-text available
We report the reproductive strategy of the speckled guitarfish, Pseudobatos glaucostigmus, a poorly studied elasmobranch caught in the south-eastern Gulf of California. Of 2068 specimens collected from the artisanal and industrial shrimp trawl fisheries, 1073 were females and 995 males. The sex ratio of adults and embryos did not deviate significan...
Article
Full-text available
Distribution of arsenic (As) in tissues and gonads of the Indo-Pacific sailfish Istiophorus platypterus and the dolphinfish Coryphaena hippurus from the SE Gulf of California was evaluated. The bioaccumulation patterns of As were the same in the two species. In I. platypterus, As levels (mg kg-1, wet weight) were gonads (7.4 ± 1.1) > liver (3.1 ± 0...
Article
Full-text available
The Straits of Florida comprise an important migratory route for apex predators moving among the Gulf of Mexico, Atlantic Ocean, and Caribbean Sea. Off Cuba’s northwestern coast, various gear types are used by Cuban fishers, including small‐scale pelagic longlines. We report here the results of a 2011–2019 monitoring program for the longline fleet...
Article
Full-text available
The bioaccumulation of arsenic (As) in the muscle, liver, kidneys, and brain of the shark Sphyrna lewini was measured in 40 juvenile specimens from southeast Gulf of California. Additionally, the biomagnification factor was calculated through prey items from stomach contents of the analyzed specimens. The concentrations of As (mg kg⁻¹, wet weight)...
Article
Full-text available
The aim of this study was to use a Bayesian approach to estimate age and growth parameters for the golden cownose ray (Rhinoptera steindachneri) in the southern Gulf of California in Mexico. Age estimates were obtained through analysis of vertebrae of 249 individuals. The von Bertalanffy growth function (VBGF) and Gompertz growth model (GM) were fi...
Article
The purpose of this work was to use the deep-water chimaera Hydrolagus colliei to examine the bioaccumulation and availability of Hg and Se in its deep-water habitat; the Se:Hg molar ratio was calculated to establish baseline information of the species and its associated ecosystem. The organisms were collected from northern Gulf of California. Hg l...
Article
Full-text available
Many shark species show regional structure and seasonal movements, complicating the gathering of life history data needed for fisheries management. Length-at-maturity is a relatively straightforward trait to quantify through the sampling of fisheries landings and is of great value for stock assessment. We report here on the median size at maturity...
Article
Full-text available
The fishery for Pacific hake (Merluccius productus) was established in the northern Gulf of California (NGC) in Mexico in 2000. To describe relevant features of the fishery and biology of Pacific hake, we analyzed 5 years of data from an on board observers program. Using generalized additive models, we standardized catch per unit of effort (CPUE),...
Article
Full-text available
Characterization of essential habitat for sharks is a key requirement for effective conservation of shark populations. In Cuba, shark essential habitat is largely undocumented. Here we present the first study of a shark nursery area in Cuban waters, for the lemon shark. Nursery areas for lemon sharks are typically surrounded by mangroves and contai...
Article
Full-text available
In the present study, we confirm the presence of the Chimaera cubana (Howell Rivero 1936) in Matanzas Bay, north Cuba. Condition of the reproductive tract suggests the specimen was sexually mature female of 82.5 cm total length. Systematic monitoring of these deep-sea fishes is necessary to understand the life history of this primitive fish.
Conference Paper
Full-text available
Los Condrictios son un amplio grupo de peces cartilaginosos que engloba a tiburones, rayas, quimeras (Carrier et al. 2012) los cuales se caracterizan por tener un bajo crecimiento poblacional y atributos biológicos que los hacen vulnerables a la sobrepesca provocando la disminución de sus poblaciones (Bonf il, 1995; Musick et al. 2000). En el Golfo...
Article
Full-text available
Biodiversity of marine-coastal ecosystems of Cuba sustains high levels of fishing activity. Due in part to heavy fishing pressure, managers and scientists recognize signs of overfishing for many stocks, intensified by increasing rates of tourism and coastal development. These factors threaten the health of those ecosystems and jeopardize the econom...
Conference Paper
Full-text available
La Totoaba Totoaba macdonaldi, es una especie endémica del Alto Golfo de California, la más grande de la familia Sciaenidae que puede alcanzar 2 m de LT y 135 kg. En la década de 1940 se desarrolló una pesquería sobre esta especie dada la demanda de su vejiga natatoria por el mercado asiático. La falta de regulación en las capturas aunado a la redu...
Conference Paper
Full-text available
Introducción: En el norte del golfo de California se desarrolla la pesquería industrial de merluza (M. productus). Esta pesquería se desarrolló durante al menos 20 años al amparo de un permiso de pesca comercial de escama marina y recientemente fue integrada a la carta nacional pesquera (D.O.F. 2018). A la fecha se desconocen sus parámetros poblaci...
Article
Full-text available
Records of white sharks (Carcharodon carcharias) sightings or captures from the southern Gulf of California have been poorly documented and anecdotal evidence is limited. Even rarer is the event of a juvenile in subtropical waters. In the present paper, we report the capture of a juvenile female white shark taken in the lower Gulf of California, wh...
Article
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In 2007, three rays identified as Rhinoptera brasiliensis based on tooth series counts were captured in the northern Gulf of Mexico, a region far outside their accepted range of the coastal waters of southern Brazil. Genetic analyses confirmed that these individuals were distinct from R. bonasus, the only recognized indigenous rhinopterid in the Gu...
Article
Full-text available
Cadmium, lead, copper, and zinc were analyzed in the dorsal muscle, liver, gonad, and stomach contents of 67 sailfish, Istiophorus platypterus, from the Eastern Pacific. Muscle exhibited the following pattern (μg/g wet weight): Zn (15.05 ± 1.24) > Cu (0.461 ± 0.026) > Cd (0.434 ± 0.099) > Pb (0.025 ± 0.001); liver Zn (119.1 ± 7.6) > Cd (95.1 ± 11.0...
Article
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A systematic list of the elasmobranches caught in two fishing trips made during May and June of 2013, on board of a bony-fish trawler ship in the central-east side of the Gulf of California is reported. Fifty nine tows within 45-320 m depth were made. The list recorded 11 species of elasmobranchs (4 sharks and 7 rays) grouped in 8 orders and 9 fami...
Article
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Nerocila acuminata (Crustacea: Isopoda: Cymothoidae), ectoparasite of speckled guitarfish Pseudobatos glaucostigma (Elasmobranchii) from southeastern Gulf of California, Mexico The ectoparasite isopod, Nerocila acuminata attaches to the skin of a variety of marine fish species; however , there is not much literature that mentions it infesting elasm...
Article
Full-text available
Distinguishing individual natal origins of highly dispersive species is essential for quantifying the extent of connectivity among spatially separated groups. Variation in the chemical composition of calcified structures has been used to determine natal origins of many organisms but the utility of this approach to sharks and rays has only recently...
Article
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Isurus oxyrinchus is a species mostly caught on pelagic longline fisheries. In this study, the occurrence of I. oxyrinchus pregnant female caught to northwest of Cuba is reported; we describe for the firsttime the development stage of the embryos for this region and compare its development phase with previoussurveys carried out in other regions. Th...
Chapter
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The Pacific hagfish (Eptatretus stoutii) and the dark hagfish (E. deani) occur in the North-Eastern Pacific. These two species in the Myxinidae Family, are primitive fish that have a cartilaginous skeleton and lack eyes, jaws, scales and paired fins (Clark & Summers 2007). The Pacific hagfish is the most abundant species, supporting a fishery in th...
Article
Full-text available
Mercury and selenium were assessed in the sailfish, Istiophorus platypterus, from the Eastern Pacific. Sixty-seven individuals were sampled, muscle, liver, kidney, gonads and the prey found in the stomach contents were isolated during fishing 2011-2013 tournaments. Hg exhibited the following pattern (μgg(-1) wet weight): liver (0.57±0.07)>muscle (0...
Conference Paper
Full-text available
The industrial shrimp fishery is one of the most important fisheries in Mexico, however, the lack of selectivity of the trawling nets produces the bycatch of until 241 species of fishes, molluscs and crustaceans (López-Martínez et al., 2010), what is translated in to an important ecological impact. The monthly variation of the bycatch: shrimp catch...
Article
Full-text available
Selenium and mercury were evaluated in muscle, liver, kidney, brain, and the stomach contents of juvenile scalloped hammerhead shark Sphyrna lewini. Se:Hg molar ratios were calculated. The average Hg levels in muscle ranged from 0.12 to 1.17 μg/g (wet weight); Hg was <0.39 μg/g in liver and kidneys and <0.19 μg/g in brain. The lowest value of Se wa...
Article
Full-text available
The stomachs of 464 speckled guitarfish Rhinobatos glaucostigma were sampled from the south-eastern Gulf of California (GC) to determine diet composition. Numerical indices and prey-specific index of relative importance (%IPSIR ) were used to determine the feeding strategy of the species. An analysis of similarity (ANOSIM) was used to determine dif...
Article
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We determined the Hg content of blood, placenta and umbilical cord of 20 pregnant females of the viviparous Pacific sharpnose shark, Rhizoprionodon longurio and of the livers of the embryos contained in their right and left uterus, aiming to provide information on the amount of this metal offloaded during pregnancy by the mother to the embryos. Hg...
Article
Full-text available
The catch of clam Panopea spp. in Mexico is very recent and there is a growing demand for its commercial exploitation, causing a strong pressure on the resource. The sedentary condition and natural history of these species coupled with the lack of surveillance can lead to overfishing of the stock, so identifying vulnerable stages of their populatio...
Technical Report
Full-text available
Given the high degree of uncertainty on key parameters associated with age and growth of shortfin mako and other pelagic sharks, the Shark Working Group (SHARKWG) of the International Scientific Committee for Tuna and Tuna-like Species in the North Pacific Ocean (ISC), have highlighted the need to take action to standardize protocols for sampling c...
Conference Paper
Full-text available
Demographic analysis was used to estimate the trend of population growth of the Rhinobatidae family in the southeastern of Brazil. Different scenarios were evaluated and results showed that without fishing, population can increase to a maximum of 10% per year as observed for Rhinobatos horkelli. In another scenarios considering the presence of fish...
Article
Full-text available
We analyzed the size structure and weight-length relationship of Rhinobatos glaucostigma in the continental shelf of Sinaloa, Mexico. A total of 1129 specimens were examined, of which 491 were female and 638 were males. The sizes for females were 7.4 to 87 cm of total length (LT) with mean of 39.7 cm and males ranged 8.3 and 71.9 cm with mean of 40...
Article
Full-text available
In this study we describe for the first time the reproductive tract morphology and we provide meristic data of the chi-mera Hydrolagus melanophasma from three specimens caught (two females and one male) on the west coast of Baja California. The three specimens were adults. The two females measured 112.6 cm TL and 117 cm TL, and weighed 5555 g and 6...
Article
Full-text available
In this work we compared the cadmium (Cd), copper (Cu), lead (Pb), and zinc (Zn) contents of muscle, liver and placenta of gestating females of the viviparous shark Rhizoprionodon longurio and of muscle, liver and umbilical cord of their respective embryos. The higher values of the essential Cu and Zn were in embryonic or embryo-related tissues (pl...
Article
Full-text available
Size at first maturity was determined for females and males of smooth hammerhead shark, Sphyrna zygaena captured in the Gulf of California during 1995-2000. A total of 1,041 organisms (461 females and 580 males) were analyzed. The size of females ranged 46.0-286.3 cm of total length (TL) whereas the size of males ranged 49.5-278.0 cm TL. The most r...
Article
Full-text available
Size at first maturity was determined for females and males of smooth hammerhead shark, Sphyrna zygaena captured in the Gulf of California during 1995-2000. A total of 1,041 organisms (461 females and 580 males) were analyzed. The size of females ranged 46.0-286.3 cm of total length (TL) whereas the size of males ranged 49.5-278.0 cm TL. The most r...
Article
Full-text available
We analyzed the size structure and weight-length relationship of Rhinobatos glaucostigma in the continental shelf of Sinaloa, Mexico. A total of 1129 specimens were examined, of which 491 were female and 638 were males. The sizes for females were 7.4 to 87 cm of total length (LT) with mean of 39.7 cm and males ranged 8.3 and 71.9 cm with mean of 40...
Article
Full-text available
ABSTRACT. The feeding habits of the sharpnose shark Rhizoprionodon longurio of the SE Gulf of California are described using the stomach contents of 250 specimens (135 males and 115 females) obtained weekly from December 2007 to March 2008 in the two main landing sites of the artisanal fishing fleet of Mazatlan. The mean total length (TL) was 77.7...
Article
Full-text available
The feeding habits of the sharpnose shark Rhizoprionodon longurio of the SE Gulf of California are described using the stomach contents of 250 specimens (135 males and 115 females) obtained weekly from December 2007 to March 2008 in the two main landing sites of the artisanal fishing fleet of Mazatlan. The mean total length (TL) was 77.7 ± 12.8 cm...
Article
Full-text available
The lipid content and fatty acid composition of the liver oil from the ray fish species Urotrygon chilensis, Urobatis halleri, Rhinobatos glaucostigma, Rhinoptera steindachneri and Dasyatis dipterura, rajiforms captured in the State of Sinaloa, México, was examined, and the variation in the fatty acid composition determined by multivariate analysis...
Technical Report
Full-text available
El trabajo presenta un breve resumen cualtitativo de las especies más importantes capturadas en un crucero exploratorio de las aguas profundas del centro del Golfo de California, realizado en mayo de 2013.
Conference Paper
Full-text available
INTRODUCCIÓN. Las rayas, tiburones y especies relativas conocidos en general como elasmobranquios engloban aproximadamente mil especies mayoritariamente marinas que habitan un amplio rango de profundidades. Su pesca ha aumentado aceleradamente durante las tres últimas décadas. Mediante estudios previos se sabe que los elasmobranquios son particular...
Article
Intrinsic rebound potential of the endangered (Totoaba macdonaldi) population, endemic to the Gulf of California, México a b s t r a c t The population of totoaba, Totoaba macdonaldi, an endangered, endemic, large sciaenid in the Gulf of California collapsed from over exploitation and habitat degradation. The fishery stopped in 1975 and the current...
Article
Full-text available
En 2008 el Pacífico mexicano contribuyó a la producción de almeja con 88% y el Golfo de México y Mar Caribe con 12%. En el Pacífico destacan Baja California Sur y Sinaloa mientras que Veracruz y Tabasco sobresalen en la zona del Golfo y el Caribe. bcs es el principal productor nacional. La captura de almeja Panopea globosa y P. generosa en México i...
Article
Full-text available
Total mercury (THg) in liver and muscle of three costal sharks from Mexico were evaluated. The highest concentrations of THg in muscle tissue of juveniles were found in Sphyrna lewini (0.82 ± 0.33 mg kg(-1) wet basis). Rhizoprionodon longurio adults had the highest concentrations (0.92 ± 1.03 mg kg(-1)). THg concentrations in liver were low compare...
Article
Full-text available
The feeding ecology and trophic level of the banded guitarfish, Zapteryx exasperata, from the Gulf of California, were assessed using stable isotope analysis (SIA) of carbon and nitrogen in muscle samples, and stomach contents analysis (SCA). Males and females showed similar diet preferences with a high diet overlap (Cλ = 0.99) and similar values o...
Article
Full-text available
The shovelnose guitarfish Rhinobatos productus is the most abundant species in the artisanal ray fishery of the Gulf of California. This ray is captured when it approaches the coast for reproductive purposes and is highly vulnerable to gillnets used in the fishery. Despite the high production of elasmobranchs in the Gulf of California, studies on r...
Article
Full-text available
The shovelnose guitarfish Rhinobatos productus is the most abundant species in the artisanal ray fishery of the Gulf of California. This ray is captured when it approaches the coast for reproductive purposes and is highly vulnerable to gillnets used in the fishery. Despite the high production of elasmobranchs in the Gulf of California, studies on r...
Article
Full-text available
We report on the proportion of maturity stages as a function of size of the Pacific sharpnose shark Rhizoprionodon longurio. Based on the development of internal and external organs, males and females were classified as immature or mature. A logistic model was fitted to develop a maturity curve to estímate the length at which 50% of the individuals...
Article
Full-text available
The white shark is known to inhabit the Gulf of California, but few published records exist for the most frequent localities of captures or sightings of this protected and relatively uncommon shark in Gulf waters. We have compiled and here report 38 records of white shark captures and reliable sightings for the Gulf. Records include individuals cau...
Article
The effect of storage time on the quality of liver oil from two commercial rajiform species (Rhinoptera bonasus and Aetobatus narinari) captured in the Gulf of Mexico (State of Campeche coast line) was evaluated. Oil characterisation was conducted by physical (specific gravity, saponification index and water content) and chemical analyses (fatty ac...