Manuel Uribe-Alcocer

Universidad Nacional Autónoma de México | UNAM · Institute of Ocean Sciences and Limnology

• Sharks are a priority for conservation because numerous species, including small‐sized coastal species, are being heavily exploited by commercial and recreational fisheries. Understanding the genetic population structure of sharks is key to effective management, maximizing their evolutionary potential in a rapidly changing environment and prevent...

The Smooth Hammerhead Shark Sphyrna zygaena is a species with anti-tropical distribution in the eastern Pacific from California USA, to southern Chile with a remarkably gap in abundance in equatorial areas between southern Mexico and Central America. For temperate species, warm waters can represent oceanographic barriers limiting the gene flow betw...

Nursery areas are critical for the reproductive cycle and biological requirements of Bull Sharks (Carcharhinus leucas) as they increase the survival of populations. Females tend to be philopatric to these areas as documented in estuaries from Australia, and inferred in the northern Gulf of Mexico and western North Atlantic Ocean, but not yet confir...

The genus Rhinoptera is composed of eight species widely distributed in tropical, subtropical and temperate coastal waters, which inhabit bays, estuaries and river mouths. Cownose ray Rhinoptera bonasus has been reported to inhabit the Western Atlantic including the Gulf of Mexico and the Caribbean, whereas the Brazilian cownose ray R. brasiliensis...

The genus Thunnus is composed of eight species, which are separated into two groups, the temperate subgenus Thunnus (bluefin tunas group) and the tropical subgenus Neothunnus (yellowfin tunas group). We obtained the mitochondrial genome for two species from the yellowfin group, Thunnus albacares and Thunnus atlanticus, and compared to those from ex...

Spanish mackerels are a highly diverse group consisting of 18 species distributed worldwide, most of them targeted by fisheries across its distribution range. We report the complete mitochondrial genome sequences of two mackerel species, Monterey Spanish mackerel, Scomberomorus concolor, and Pacific sierra mackerel, Scomberomorus sierra. A total le...

The genetic homogeneity of the Monterey Spanish mackerel Scomberomorus concolor population in the Gulf of California was confirmed using nine nuclear microsatellite loci in combination with mitochondrial cytochrome b gene sequences. Samples were collected from the upper and central Gulf areas, representing the two main biogeographical regions of th...

We report for the first time, the complete mitochondrial genome sequence of the porbeagle shark, Lamna nasus, from a specimen collected from offshore waters of New England, USA in the western North Atlantic Ocean. The genome structure of this species is similar to the other reported shark mitogenomes. The genome sequence has a total length of 16,69...

Elasmobranchs are one of the most diverse groups in the marine realm represented by 18 orders, 55 families and about 1200 species reported, but also one of the most vulnerable to exploitation and to climate change. Phylogenetic relationships among main orders have been controversial since the emergence of the Hypnosqualean hypothesis by Shirai (199...

The structure of the mitochondrial genome for the Pacific red snapper, Lutjanus peru, and the spotted rose snapper, Lutjanus gutattus, of specimens collected in the eastern Pacific is similar to the reported for other teleosts and shares the same configuration with other members of the family Lutjanidae. It has a total length of 16 502 and 16 508 b...

The population genetic structure of 251 bonnethead sharks, Sphyrna tiburo, from estuarine and nearshore ocean waters of the Western North Atlantic Ocean (WNA), was assessed using sequences of the mitochondrial DNA-control region. Highly significant genetic differences were observed among bonnetheads from 3 WNA regions; Atlantic coast of Florida, Gu...

Abstract The hammerhead shark (Sphyrna zygaena) is listed as a "Vulnerable" species for the International Union for Conservation of Nature (IUCN). Here we report the complete sequence for the mitochondrial genome of the hammerhead shark of a specimen collected from the eastern Pacific Ocean. The genome structure is quite similar to other reported m...

Coryphaena hippurus is an economically relevant fish species that is highly exploited by commercial and sport fisheries throughout its geographical range. We tested a set of 30 primers derived from next generation sequencing and optimized conditions for amplification of sixteen polymorphic microsatellite loci. These were also tested for cross ampl...

Abstract The bull shark mitochondrial structure is similar to that of other elasmobranchs; it has a total length of 16,100 bp, the base composition of the genomes was as follows: A (31.35%), T (31.35%), C (24.38%) and G (12.90%). It contains 13 protein-coding genes and 23 tRNA genes. The tRNA genes range from 70-72 bp. Gene order is the same as in...

Abstract The complete mitochondrial genome of the dolphinfish (GeneBank accession number KF719178) structure is similar to that of other teleosts, has a total length of 15,733 bp, the base composition was as follows: A (28.78%), T (29.25%), C (25.45%) and G (16.50%), which demonstrated an A + T (58.04%) rich feature. It contains 13 protein-coding g...

Due to the current status of the scalloped hammerhead shark (Sphyrna lewini) as a threatened species, the asseSSMent of genetic diversity, divergence, and demographic parameters of populations in the eastern Pacific Ocean may assist in developing appropriate strategies for sustainable fisheries and species conservation. We analyzed samples collecte...

Multivariate analyses of morphometric data have been widely used to define independent fishing units for exploited species. In this study we analyzed the morphometric variability of 4 brown shrimp Farfantepenaeus californiensis (Holmes, 1900) locations from the Mexican Pacific to assess whether differentiation agrees with the geographical subdivisi...

Multivariate analyses of morphometry data have been widely used to define independent fishing units for exploited species. In this study we analyzed the morphometry variability of 4 brown shrimp Farfantepenaeus californiensis (Holmes, 1900) locations from the Mexican Pacific to assess whether differentiation agrees with the geographical subdivision...

The systematics of the marine catfish of the family Ariidae is controversial because at the present time the number of species and genera in the family, or their relationships, remain uncertain. Phylogenetic relationships among five representative species of marine catfish of the family Ariidae from both the Pacific and the Atlantic coasts of Mexic...

Testing connectivity among populations of exploited marine fish is a main concern for the development of conservation strategies. Even though marine species are often considered to display low levels of population structure, barriers to dispersal found in the marine realm may restrict gene flow and cause genetic divergence of populations. The Pacif...

The Humboldt squid is the source of supply for the largest cephalopod fishery of the world. Essential knowledge for the management of this mollusc must include information about the genetic structure and evolutionary history of populations because it presents a complex population structure and atypical features compared with other ommastrephins. Se...

The population structure of the jumbo squid (Dosidicus gigas) is complex, containing several cohorts and three groups defined by their size (small, medium, and large) and by differences in maturation, growth, and life span. Several authors have indicated the possibility of such groups representing discrete genetic units even at level subspecies or...

The systematics of the marine catfish of the family Ariidae is controversial because at the present time the number of species and genera in the family, or their relationships, remain uncertain. Phylogenetic relationships among five representative species of marine catfish of the family Ariidae from both the Pacific and the Atlantic coasts of Mexic...

The population structure of the jumbo squid (Dosidicus gigas) is complex, containing several cohorts and three groups defined by their size (small, medium, and large) and by differences in maturation, growth, and life span. Several authors have indicated the possibility of such groups representing discrete genetic units even at level subspecies or...

The widespread Mexican apple snail Pomacea flagellata (Say 1827) and the strictly endemic "tegogolo" P. patula catemacensis (Baker 1922) (restricted to Lake Catemaco), are the only known American Ampullariidae that have haploid complements n=13. Pomacea patula catemacensis has suffered a critical reduction in abundance due to immoderate fishing for...

Three snook species, Centropomus viridis, Centropomus medius, and Centropomus robalito, from the eastern central Pacific, representing three of the four proposed phyletic lineages in the genus, were analyzed for genetic variability by means of allozyme and RAPD to evaluate the divergence between populations at different levels of dispersal ability...

Significance probabilities values for overall multilocus and pairwise sample comparisons of allele frequency homogeneity tests (P) and population subdivision F ST , estimates (P FST ) for Centropomus species Overall loci population subdivision estimates (Weir and Cockerham, 1984) for allozymes and RAPDs, with their respective values of probability

The jumbo squid (Dosidicus gigas) supports important fisheries, with the maximum landings being recorded in Mexico, Peru and Chile.To evaluate genetic structure and to measure the impact of temporal variation, randomly amplified polymorphic DNA (RAPD) data were generated and analysed from 210 samples from eight eastern Pacific sites and on two samp...

Dolphinfish (Coryphaena hippurus) samples were collected over four consecutive years from four locations in the eastern central Pacific to evaluate the genetic variation in a 751bp segment of the mitochondrial NADH subunit 1 (ND1) to test for the presence of genetic population structure. Sequence analyses revealed no significant differences among c...

Five eastern Pacific yellowfin tuna samples (four northern: 10–25°N, 95–130°W, and one southern: 16–18°S, 95–97°W), collected from fishing vessels between 1994 and 2002 were analyzed for variation at seven microsatellite loci to evaluate their spatial genetic homogeneity. Single-locus homogeneity exact tests revealed significant genetic differentia...

Genetic structure and variability of representative populations of the species Centropomus viridis, C. medius and C. robalito, were assayed. Samples from locations with similar characteristics were pooled into one of the next zones: Sinaloa, Nayarit and Guerrero. Electrophoresis of isozymes in starch gels resolved 15 loci, 9 of which showed polymor...

A dinoflagellate bloom ("red tide" event) dominated by the toxic Gymnodinium catenatum Graham (Gymnodiniales, Dinophyceae; 99.7%) and the noxious Noctiluca scintillans (Mcartney) Kofoid (Noctilucaceae, Dinophyceae; 0.3%) was observed in Bahia de Mazatlán Bay, México, on 24-26 January 2000. Photographic and microscopic analysis of samples during suc...

Stock structure of eastern Pacific yellowfin tuna was investigated by analyzing allozymes and random amplified polymorphic DNAs (RAPDs) from 10 samples of 20-30 individuals each, collected between 1994 and 1996 from fishing vessels operating in the Inter-American Tropical Tuna Commission (IATTC) yellowfin regulatory area (CYRA). Allozyme analysis r...

The karyotypes of four gerreids of the western Atlantic Ocean are documented. A diploid chromosome complement of 48 telocentric chromosomes was found in the four species (2N=48t, fundamental number FN=48). No differences were detected either in the number of chromosomes of the standard karyotype, in their karyotype size, or between the karyotypes d...

The phylogeny of three gerreid species was evaluated through allozymes and mtDNA analyses. Genetic similarities were estimated with data from 18 protein-coding loci and from mtDNA fragments produced by 3 restriction enzymes. The allozyme and mtDNA dendograms had identical topology. Genetic distance, genetic similarity, and mtDNA sequence divergence...

Karyotype analyses of three Chirostoma species, C. estor, C. patzcuaro, and C. jordani from Mexico, are presented. C. estor and C. jordani have both a diploid number of 2N = 48 and a fundamental number of NF = 68, but different karyotype formulae. The co-occurrence of these karyotypes with morphometric and allozymatic primitive features so far repo...

Aquatic systems are essential for life. Human subsistence and health are linked to these systems, as they are indispensable for food production through agriculture, livestock raising and fisheries and to industrial processes to satisfy society’s needs. However, these systems have often been converted, as negative by-products of progress, into reser...

Cichlasoma istlanum (Jordan & Snyder, 1900) is a freshwater cichlid from the Balsas river province in the Pacific Basin. Two subspecies: C. istlana istlana, from the Ixtla river in the state of Morelos, Mexico, and C. istlana fusca, from the Huámito river near the town of La Huacana, in the state of Michoacán, were named half a century ago on the b...

Distinctive genetic markers of the central and southern populations of the northern anchovy Engraulis mordax were sought by electrophoretic techniques. Three samples of the central population were collected in Ensenada, Baja California, and one of the southern population in Puerto San Carlos, Baja California Sur. Although the electrophoretic separa...

Distinctive genetic markers of the central and southern populations of the northern anchovy Engraulis mordax were sought by electrophoretic techniques. Three samples of the central population were collected in Ensenada, Baja California, and one of the southern population in Puerto San Carlos, Baja California Sur. Although the electrophoretic separa...

The northern anchovy Engraulis mordax is an important fishery resource. The karyotypes of the central and southern populations of the northern anchovy, as well as their C-banding patterns were studied as potential genetic markers. The karyotype of both populations has 48 acrocentric chromosomes and agrees with the one reported by Ohno et al. (1968)...

The karyotype of Gobionellus microdon has a diploid number of 2N = 56 and a fundamental number of FN = 66 with a chromosome formula of 4M + 6sm+46st,a. Eleotris picta has 52

The species Gobiomorus dormitor (Lacépède 1800) and Dormitator maculatus (Bloch 1790) have an uncertain taxonomic position within the Gobiidae family since some authors as Gosline (1971) and Walls (1975) place them in a separate family, the Eleotridae. Some other authors as Greenfield (1971) consider the eleotrids as a part of the Gobiidae family,...

The Giemsa-banded karyotype of Romerolagus diazi is described. The animal has 48 chromosomes, which can be divided into five groups. Group 1 has 5 chromosome pairs, of which Nos. 1, 2 and 5 are metacentric, and 3 and 4 submetacentric. Group 2 consists of 5 pairs of submetacentric chromosomes, group 3 of 4 submetacentric (11–13, 15) and 2 acrocentri...

The northern anchovy Engraulis mordax is an important fishery resource. The karyotypes of the central and southern populations of the northern anchovy, as well as their C-banding patterns were studied as potential genetic markers. The karyotype of both populations has 48 acrocentric chromo- somes and agrees with the one reported by Ohno et al. (196...