Centro Regional Of Investigacion Pesquera

Manzanillo, Mexico

Centro Regional Of Investigacion Pesquera

Manzanillo, Mexico
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Velez-Arellano N.,National Polytechnic Institute of Mexico | Garcia-Dominguez F.A.,National Polytechnic Institute of Mexico | Lluch-Cota D.B.,National Polytechnic Institute of Mexico | Gutierrez-Gonzalez J.L.,Centro Regional Of Investigacion Pesquera | And 2 more authors.
Turkish Journal of Fisheries and Aquatic Sciences | Year: 2017

The monitoring on abalone banks has been intensified since the declining of wild global production due to overfishing, disease, environmental changes and poaching. This is to support timely decisions to execute actions for mitigation, prevention, conservation and fisheries production benefits. Eight morphophysiological indices for green abalone, Haliotis fulgens Philippi, 1845 from the Pacific coast of Mexico were evaluated and their performance were elucidated due to their potential as monitoring tools. The Boolootian’s gonadic index (GIB) and gonadic area index (GAIA) were informative of complete reproductive cycle, thus are reliable for reproductive patterns monitoring. While gonadic index (GI) and gonadic index of calculated mass (MGI) were suitable indicators only of spawning. The condition index of calculated mass (MCI), foot index of calculated mass (MFI), condition index (CI) and foot index (FI) proved temporal changes of soft tissues condition. The MFI clearly defined the best nutritional status of the green abalone foot between March to August, indicating the time when fishing organizations can get the best yields and highest foot quality at Baja California Peninsula, Mexico. Therefore MFI can be used as cheap and quick information to make decisions on the start-up of fishing operations and abalone condition monitoring. © Published by Central Fisheries Research Institute (CFRI) Trabzon, Turkey.

Ramos-Santiago E.,Centro Regional Of Investigacion Pesquera | Tapia-Garcia M.,Metropolitan Autonomous University
Boletin de Investigaciones Marinas y Costeras | Year: 2017

The ecological studies on the fish community in La Entrega Bay about its composition, diversity, distribution, and abundance are insufficient, although it has one of the largest structured coral reef, with a variety of environments, habitats, and aquatic organisms poorly studied. Five samples were made in November 2002, March and April 2003, which correspond to the dry season; and June and August 2003 during the rainy season, through visual censuses with band transects of 10 m long and parallel to coastline. Each census was conducted by two divers and considering a field of view of 5 m. Ten transects were distributed in the following way: five in the coral reef, three in the rocky reef, and two in the sandy bottom in front of the commercial area of the Bay. A total of 65 species, 49 genus and 28 families were identified. The most representative families were Labridae, with nine species and five genera, Pomacentridae with eight species and four genera and Tetraodontidae with five species and three genera. The greatest abundance of fish was characteristic of the coral reef, mainly during the rainy season. The greatest diversity and specific richness occurred on the rocky reef during the rainy season. The classification analysis indicates a different community structure for coral reef, rocky, and sandy environments. Thalassoma lucasanum, Stegastes acapulcoensis, Prionurus punctatus, Chromis atrilobata, Haemulon maculicauda and Chaetodon humeralis were dominant species on the coral reef. Stegastes acapulcoensis, Microspathodon dorsalis, C. atrilobata, Apogon pacificus and Halichoeres notospilus were dominant species on the rocky reef. Haemulon maculicauda, Haemulon steindachneri, Mugil curema and Mulloidichthys dentatus were dominant species on the sandy environment. The specific richness has a direct relationship with temperature. The abundance variations during the five months of sampling were statistically different.

De Jesus Suarez-Moo P.,CICESE | Calderon-Aguilera L.E.,CICESE | Reyes-Bonilla H.,Autonomous University of Baja California Sur | Diaz-Erales G.,Autonomous University of Baja California Sur | And 2 more authors.
Journal of the Marine Biological Association of the United Kingdom | Year: 2013

The Cortes geoduck (Panopea globosa) has been considered a Gulf of California (GC) endemic but anecdotal and unpublished evidence has suggested its presence in Bahía Magdalena (BM), on the Pacific coast of southern Baja California. Establishing the identity of geoduck clams and their distribution limits is not only of clear biological significance to understand their structural and functional variation, but is also of consequence for their conservation and management, given the multi-million dollar fishery they support in north-west Mexico. We analysed Panopea clams from Mexican populations, including BM, using an integrative approach including genetics, morphometrics, and an ecological niche model. Our genetic results (restriction fragment length polymorphisms of nuclear ribosomal DNA and mtDNA cytochrome c oxidase subunit I sequences) clearly identify BM geoducks as P. globosa, implying a significant geographical range expansion outside of the GC and refuting its status as endemic to the Gulf. On the other hand, clams from BM were phenotypically different (shell significantly higher) from other Mexican P. globosa and Panopea generosa specimens, which may account for the confusion in their morphological identification. The ecological niche model for P. globosa, integrating ecological and distributional data from the GC, revealed a very low probability (<10%) that this species could successfully occupy BM. Our results and those of others suggest that the Cortes geoduck population in BM may be adapted to specific environmental conditions differing from those experienced by conspecifics inside the Gulf and is likely isolated. This is highly relevant for the management plans of Mexican geoducks. © 2012 Marine Biological Association of the United Kingdom.

Rabago-Quiroz C.H.,University of Sonora | Valdez-Holguin J.E.,University of Sonora | Nevarez-Martinez M.O.,Centro Regional Of Investigacion Pesquera | Acevedo-Cervantes A.,Technological Institute of Guaymas
Marine Biology Research | Year: 2012

The assemblage of the fish species obtained as bycatch in trawl nets on the Gulf of California in 2004, 2005 and 2007 was studied. Sampling was carried out during July and August at a series of stations along the coast of Sonora. The criteria for the most important fish species caught were drawn from abundance and frequency of occurrence and weight, using various ecological indices (index of relative abundance, biological value index and index of relative importance). After identification, these species and their abundances were used to define study groups based on similarity matrices and Ward's clustering method. We analysed 125 fish hauls containing&19,000 organisms, representing 243 species (fish, crustaceans, molluscs and echinoderms). There were 28 dominant species, most notably Urobatis halleri, Synodus scituliceps, Eucinostomus argenteus, Diplectrum pacificum and Haemulopsis nitidus. Cluster analysis, based on latitude, and bathymetry showed three station groupings. The first was characterized by species from the northern region of the Gulf with a bathymetric distribution&25 m. The second was dominated by species from the central to southern region from depths<25 m. The third was a transitional group with species found between the central and southern Gulf from depths of 10 to 45 m. Most fish assemblages consist of species with wide distribution within distinct biogeographic provinces, which showed a major change in the association, frequency and absence of species from north to south, indicating a variety of habitats in the Gulf of California. © 2012 Copyright Taylor and Francis Group, LLC.

Lizarraga-Cubedo H.A.,Centro Regional Of Investigacion Pesquera | Lizarraga-Cubedo H.A.,Marine Scotland - Marine Laboratory | Lizarraga-Cubedo H.A.,University of Aberdeen | Tuck I.,Marine Scotland - Marine Laboratory | And 7 more authors.
ICES Journal of Marine Science | Year: 2015

Variability in the fluctuations of two Scottish lobster populations, the Hebrides and Southeast, was investigated from available long dataseries of fishery and environmental variables. In a multivariate context, relationships between selected environmental variables and the fishery data were studied at different spatial and temporal (annual, spring, and autumn) scales and from individual and overall sampled fleet. Multivariate techniques such as cross-correlation function, principal components analysis, and redundancy analysis confirmed that the capture of lobsters was strongly influenced by sea surface temperature, windspeed, and sea level pressure throughout the year, and this dependence affected the duration of the fishery. There were evident differences in the patterns of environmental variables for both regions. In the Hebrides, the total variation (42%) of the interaction fishery-environmental variables for spring and autumn fisheries could be attributed to the environmental variables in an 89%. For the Southeast, spring fishery was more affected by changes in the environment, with a total variation of 34%, from which 85% could be explained by the environmental variables tested, than autumn fishery where catches and catch rates may be more affected by the way individual vessel and sampled fleet operate. Two elements were identified, Hebrides and Southeast spring and autumn fisheries. The Hebrides lobster population is strongly influenced by density-independence processes at all spatial scales. The Southeast fishery is also driven by environmental processes, with higher correlations for recruits with differences at small and large spatial scales. © 2015 International Council for the Exploration of the Sea 2015. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Skarbnik Lopez J.,Autonomous University of Baja California Sur | Herrero Perezrul D.,Centro Interdisciplinario Of Ciencias Marinas Ipn | Reyes Bonilla H.,Autonomous University of Baja California Sur | Garcia Dominguez F.,Centro Interdisciplinario Of Ciencias Marinas Ipn | Turrubiates Morales J.,Centro Regional Of Investigacion Pesquera
Echinoderms: Durham - Proceedings of the 12th International Echinoderm Conference | Year: 2010

The reproductive cycle of Holothuria (Selenkothuria) lubrica was monitored from November 2003 to November 2004. A total of 1438 specimens were weighted and measured and the gonad of 390 individuals were preserved for the reproduction analysis. The mean length and weight were 9.69±0.070cm and 18.25 ± 0.271 g respectively. The result showed that the species grows allometrically (b = 2.072) at the study site. Five gonadal stages were described according to cell types present in the gonad: undetermined, gametogenesis, maturity, spawning and spent. Gonad index was estimated monthly and compared to gonadal stages and sea-surface temperature in order to determine if there was a relationship between these parameters. This holothurian is dioecious and sex ratio was not different from 1:1. The reproduction showed an annual pattern with a single spawning period during summer. The gonad index showed the highest values during summer, coinciding with mature gonads and when the sea-surface temperature reached its maximum. The calculated weight at first maturity was 27.3 g. © 2010 Taylor & Francis Group.

Cisneros-Montemayor A.M.,University of British Columbia | Cisneros-Mata M.A.,Centro Regional Of Investigacion Pesquera | Harper S.,University of British Columbia | Pauly D.,University of British Columbia
Marine Policy | Year: 2013

It is well recognized that not all fisheries catches are reported or recorded properly by either government or non-government agencies. These unreported catches can be illegal, of unregulated species, or simply not monitored due to logistical barriers. In Mexico, these barriers are an extensive and often not easily accessible coastline, mostly de facto open access fisheries, poor administrative practices and generalized corruption in the fishing sector as a whole. These conditions were likely promoted early in the last century through the government's largely successful policies to increase fisheries catches and stimulate employment and economic growth. Many years later and amid declines in fish stocks and subsequent economic benefits, most notably at local scales, it is evidently time for a fundamental change in strategy away from expansion of fishing effort and toward ecological and economic sustainability. An important step in this endeavor is to provide a quantitative pre- mortem analysis of Mexico's total marine fisheries catches during the last half-century. Results suggest that from 1950 to 2010, total catches were nearly twice as high as the official reports, with an average annual catch of 1.5 million tonnes (t) compared to 796. thousand. t in official statistics. In the last year of available data, 2010, official and total estimated catches were 1.5. million and 2.2. million. t, respectively. While these results may be perceived as a criticism of the status quo and ante, this study actually does not single out a responsible party, but is, rather, a call to the many sectors of society who contribute to a lack of control, to help overcome these conditions, and increase and sustain the benefits from Mexico's marine fisheries. © 2012 Elsevier Ltd.

Schneller A.J.,Skidmore College | Fernandez De Lara V.C.,Centro Regional Of Investigacion Pesquera | Zavala C.A.S.,National Polytechnic Institute of Mexico | Rebollo A.M.,National Polytechnic Institute of Mexico
Hidrobiologica | Year: 2014

Between January and August of 2010 the southwestern side of the Baja California peninsula in Baja California Sur, Mexico experienced a temporary intense growth of jumbo squid (Dosidicus gigas). We documented the resulting fishery phenomenon by conducting interviews with 110 artisanal fishermen in the community of Puerto San Carlos using a structured paper interview instrument that employed qualitative research methods to better understand the economic, demographic, and geographical catch and fleet characteristics of this fishery. We also conducted six semi-structured interviews with seafood buyer-exporters. Data show that squid fisherman temporarily migrated to Puerto San Carlos from Santa Rosalia, B. C. S., Sonora, and Sinaloa where the artisanal jumbo squid fishery is rooted. Fishermen from Puerto San Carlos, Adolfo López Mateos, and various inland B. C. S. communities found economic opportunity in the abundance of squid near Magdalena Bay. The Catch Per Unit Effort was 0.57 (+/-0.29) t of squid per day, limited only by the size of boats. Product exporters paid as much as 6 mexican pesos/kilo ($0.50 USD) at the onset of the fishery in January and February, and prices lowered to 2.5-3.0 mexican pesos/kilo ($0.25 USD) during summer months. This research also identified the shipping routes of squid from Mexico to Asian markets. Official fisheries data gathered by SAGARPA showed that Puerto San Carlos' artisanal squid fleet caught and exported 19,208 metric t of squid in 2010, representing $4.8 million USD.

Velez-Arellano N.,National Polytechnic Institute of Mexico | Garcia-Dominguez F.A.,National Polytechnic Institute of Mexico | Lluch-Cota D.B.,National Polytechnic Institute of Mexico | Gutierrez-Gonzalez J.L.,Centro Regional Of Investigacion Pesquera | And 2 more authors.
Journal of Shellfish Research | Year: 2016

This article describes the changes in the concentration of lipids, proteins, and carbohydrates in the gonad, digestive gland, foot and mantle of Haliotis fulgens over a reproductive cycle. An average of 30 specimens was collected each month between September 2011 and August 2013 from La Bocana, Baja California Sur, Mexico. The biometrics of each specimen were recorded, and gonads were processed using a standard histological method. Additionally, from February 2012 to February 2013, portions of nonfixed organs were frozen at -54°C for use in proximal analyses. This species showed gonadal development and spawning throughout the study period, with a peak in spawning from September through February, coinciding with sea surface temperatures near 20°C and the beginning of the decline in daylight. This study demonstrates that this species utilizes proteins, lipids, and carbohydrates stored in the foot during gonadal development and that lipid levels decrease in both the digestive gland and the gonad during spawning.

Gonzalez-Acosta A.F.,National Polytechnic Institute of Mexico | Castro-Aguirre J.L.,National Polytechnic Institute of Mexico | Didier D.A.,Millersville University of Pennsylvania | Velez-Marin R.,Centro Regional Of Investigacion Pesquera | Burnes-Romo L.A.,National Polytechnic Institute of Mexico
Revista Mexicana de Biodiversidad | Year: 2010

The southeastern Pacific chimaeroid Hydrolagus macrophthalmus De Buen, 1959, is reported for the first time in the northeastern Pacific on the basis of 1 male specimen (945 mm TL) caught on 13 April 1995 off Manzanillo, Colima (Mexico: 18° 30′N, 104° 15′W) at the surface above deep water (2 000 m). The first occurrence of this species increases the number of chimaeroid species known in the northeastern Pacific and expands their known range.

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