Hector Abelardo González-Ocampo

National Polytechnic Institute-CIDIIR SINALOA · Sustainble aquaculture and Environmental Studies

Organochlorine pesticides (OCPs) residues were determined in fillets of Lutjanus colorado, L. argentiventris, and L. novemfasciatus. Fillet samples were collected bimonthly from February 2012 to February 2013. OCPs average concentrations do not differ significantly according to size, weight, or season, nor do they relate with the physico-chemical p...

Caesalpinia platyloba was evaluated as an alternative for the retention of atmospheric carbon and as a feasible and viable economic activity in terms of income for tropical deciduous forest (TDF) peasants in the carbon markets. A total of 110 trees of C. platyloba from plantations and a TDF in the Northwest of Mexico were sampled. Growth (increase...

Juvenile seed of the Cortés oyster Crassostrea corteziensis were exposed to Lactobacillus sp. isolated from Nodipecten subnodosus, a mix of Pseudomonas sp. and Burkholderia cepacia, a marine yeast strain, a commercial probiotic (Epicin®), and oxytetracycline to determine their effect on growth, survival, SOD activity, and protein content. Probiotic...

The effect of plants and probiotics on the survival and immune response of Litopenaeus vannamei challenged with the white spot syndrome virus (WSSV) was evaluated. A probiotic mixture (PM), plant extract (PE) or powdered plants (PP) were added to feed with the attractant Dry Oil®. An experiment was conducted with five treatments in triplicate. Shri...

Environmental diagnosis of supra-littoral and semi-intensive shrimp farm systems (SCS) in the northwestern part of Mexico had been developed for a 10-years period (1993 to 2003). The activities in the construction, operation and abandonment phases were evaluated by an environmental impact diagnosis analysis, causal diagrams, complex analysis system...

Background The gonadotropins lutropin and follitropin stimulate steroid synthesis in the gonads during gonadal maturation by promoting oogenesis and spermatogenesis. Endocrine disruptors such as lindane (γHCH) can alter the reproductive stage so and could alter puberty by interfering with lutropin and follitropin signaling. γHCH was classified by W...

Environmental contaminants endanger human health and non-target organisms such as crocodiles (Crocodylus acutus) that live in aquatic bodies surrounding agricultural areas. Due to their intrinsic characteristics, these organisms could be bioaccumulating and transmitting organochlorine pesticides (OCs) to their eggs. The objectives of this study wer...

Background: In shrimp farming, viral and bacterial diseases cause losses due to mortalities of up to 100% of the production. The use of prophylactic methods such as natural additives that do not generate bacterial resistance and environmental problems is currently being researched. Objective: This study evaluated the effect of medicinal plants (alo...

Maclura is a plant genus little known and used, species of which have been mainly used in the recovery of soils, for medicinal purposes such as dental infection treatments, and as wood for making furniture and construction. The overexploitation of this genus has placed certain species in endangered extinction status in some countries, such as Brazi...

p> Background: In protected natural areas (PNA), as units for the management and conservation of natural ecosystems, the challenge of economically valuing their environmental services sometimes makes it difficult to improve the design of their conservation plans and prevents a correct estimation of economic and social impacts on the well-being of p...

Organochlorine pesticides have been banned in Mexico since 1991, but they are still present in ecosystems, representing a health risk. The Navachiste Lagoon Complex is a RAMSAR site and a fishing area for various edible species. The objective of this study was to determine the cancer health risks posed by the consumption of crab Callinectes bellico...

The Navachiste complex (NAV) is impacted by neighbored human activities and is located in the southwestern coastal zone of the Gulf of California. The study determines the trace metal (TM) and organochlorine pesticides (OCP) health risk content in the edible tissue of Sphoeroides spp. from NAV. The daily intakes (EDI), target hazard quotient (THQ),...

The Navachiste complex (NAV) is impacted by neighbored human activities and is located in the southwestern coastal zone of the Gulf of California. The study determines the trace metal (TM) and organochlorine pesticides (OCP) health risk content in the edible tissue of Sphoeroides spp. from NAV. The daily intakes (EDI), target hazard quotient (THQ),...

The production of total phenolic content (TPC) and total flavonoid content (TFC), antioxidant (AA), and copper chelating (CACu⁺) activities of Rhizophora mangle from three coastal lagoons under different grades of anthropogenic pollution and pollutant presence were analyzed. R. mangle is a mangrove plant that inhabits tropical coastal lagoons and s...

This study was carried out in the Navachiste coastal lagoon, Mexico, surrounded by intensive agricultural and aquaculture activities that cause environmental pollution by the deposition of trace metal residues in the sediments of this coastal lagoon. The trace metals are bioaccumulated by benthic organisms such as the blue swimming warrior crab, Ca...

Protected Areas (PAs) are critical instruments in preserving biodiversity and, because of their high-quality environmental conditions, they have always been attractive for ecotourism, the natural-based element of holiday activities that minimizes the “antagonistic” impacts of tourism on the environment. However, many PAs lack a specific management...

Aim of study: The effect of microencapsulated phenolic compound extracts of Maclura tinctoria (MTBE) on growth performance and humoral immunity markers of the white leg shrimp Litopenaeus vannamei juveniles (0.5 ± 0.2 g initial weight) was studied. Area of study: M. tinctoria was collected from Hampolol, Campeche, and Arroyo del Agua, Culiacan, Si...

Background: The white spot syndrome virus (WSSV) causes high mortalities in aquaculture. The use of immunostimulants increases animal resistance. Objective: To evaluate the WSSV infection percentage and the immunostimulant effect of lactic acid bacteria and yeast (MI= microbial immunostimulants) on WSSV infected Litopenaeus vannamei. Methods: A b...

The present study was conducted to identify the antifungal activity of phenolic compounds extracted from the mangrove, Rhizophora mangle against the Fusarium verticillioides isolates DA42, F64 and PO3. The total phenolic content was calculated using the Folin-Ciocalteu method. The in vitro inhibition test was performed according to the poisoned foo...

The vaquita (Phocoena sinus) is considered the world’s most endangered marine mammal. It is the smallest member of the porpoise family endemic to the upper part of the Gulf of California. The current population is estimated at less than 30 individuals. The primary reasons for the species decline includes limited habitat and incidental mortalities a...

The effects of fulvic acid (FA) on survival and immune‐related gene expression were investigated in Litopenaeus vannamei challenged with Vibrio parahaemolyticus by immersion. Shrimp were fed with different dietary FA concentrations (1, 2, 4 and 6 g/kg feed) for 20 days (first bioassay) or 8 days (second bioassay, 2 g/kg feed of FA added every 2 day...

The objective of the current study was to determine the phenolic composition and carotenoid contents of leaves, bark, and fruits of Malpighia umbellata, assess the changes in the phenolic composition and contents of carotenoids and vitamin C of its fruits in different stages of maturity, and evaluate the antioxidant properties of its leaves, bark,...

El complejo lagunar San Ignacio-Navachiste-Macapule en una Área de Protección de Flora y Fauna Islas del Golfo de California desde 1978. Debido a su calidad paisajística y la condición natural de sus áreas, este Complejo fue declarado como Sitio RAMSAR en 2008. Se ubica en el sureste del Golfo de California y comprende 24 000 ha. Es de importancia...

The goal of this study was to identify strains of fungi, by morphological and molecular techniques, with potential to control the sugarcane borer complex Diatraea considerata (Heinrich), D. grandiosella (Dyar), and Eoreuma loftini (Dyar) (Lepidoptera: Crambidae). These species are the most important pests in sugarcane, Saccharum officinarum (L.), c...

The adverse effect of pesticides on non-target wildlife and human health is a primary concern in the world, but in Mexico, we do not know which wildlife species are at the greatest risk. The aim of this study was to determine organochlorine pesticides in mice of two agricultural fields in Sinaloa, Culiacan and Guasave. Procedures of extraction, ana...

This study is motivated by the problem of erosivity (R), exacervated in semiarid zones by intense seasonal storms. The purpose was to estimate the spatial variation of R in a coastal area covering 37500 km2 which is one of the most important agricultural areas in northwestern Mexico. Four methods were used. Rainfall data from 11 SMN-CONAGUA weather...

Con base en la experiencia en investigación para las Áreas Naturales Protegidas de México de los autores de este trabajo, investigadoras e investigadores adscritos a instituciones de educación superior y a centros de investigaciones, se analizaron las citas bibliográficas de los trabajos publicados para cada región administrativa en las que la Comi...

This study evaluated the effects of diets with fermented duckweed flour (Lemna sp.) (FDF) on growth performance and gene expression in Pacific white shrimp, Litopenaeus vannamei. Shrimp were cultured in an outdoor system during 50 days and fed diets containing 0, 5, 15, 25, and 35 % FDF replacing fishmeal (FM) (diets D0, D5, D15, D25, and D35, resp...

http://www.uaa.mx/investigacion/revista/Hemeroteca/REVISTA 60.pdf En este ensayo se ofrece un panorama general de los aspectos conceptuales de las áreas naturales protegidas de México, describiendo cuántas son, dónde están y como están sectorizadas. Se describe, asimismo, la historia de su creación en nuestro país y la evolución de su administració...

Lemna sp. flour was fermented with bacteria as a source of protein for the preparation of white leg shrimp diets. Pediococcus pentosaceus was isolated from Litopenaeus vannamei and Litopenaeus stylirostris juveniles and characterized with biochemical (Gram stain, hemolytic activity, extracellular enzymatic activity, hydrophobicity, bacterial growth...

The effect of a mixture of antiviral plants (Echinacea purpurea and Uncaria tomentosa) and microbial immunostimulants (Pediococcus parvulus and Candida parapsilosis) on growth performance, survival, white spot syndrome virus (WSSV) prevalence, and immune response of L. vannamei was evaluated under laboratory conditions. Powdered plants (PP) were in...

A 26-day bioassay was performed to evaluate the immunostimulating effect of lactic acid bacteria and yeasts (IM), added in the feed, in Litopenaeus vannamei. Bioassay treatments were performed in triplicate: I) control diet (Camaronina®); II) IM in food, daily; III) IM in food every three days and; IV) IM in food every six days. The shrimp were WSS...

Concentrations of organochlorine pesticides (OCPs) were determined in the muscle tissue of the fish commonly known as mullet (Mugil cephalus; in Mexico, lisa). Muscle tissues were collected during bimonthly samplings from March 2010 to February 2011 in the Navachiste Bay (southwestern area of the Gulf of California). The pesticides δ-HCH and dieldr...

La conservación de la vaquita marina Phocoena sinus (Norris y McFarland 1958) enfrenta una controversia ecológica, social y económica vinculada con la pesca en el Alto Golfo de California (AGC). Esta especie es el único cetáceo endémico del AGC y en crítico peligro de extinción (Rojas y Jaramillo 2001; UICN 2007). Por otra parte, la pesca es la act...

The effect of inulin and probiotic bacteria on the growth, survival, immune response and viral prevalence of white spot syndrome virus (WSSV) in white shrimp was evaluated. Presumptive bacilli and lactic acid bacteria (LAB) were characterized for hemolytic and enzymatic activity, hydrophobicity and antagonism against Vibrio. Selected isolates (Baci...

The research reported in this paper had three objectives. The first was to draw a map of the piezometric contours of the Sinaloa River Basin to enable an interpretation of the hydrodynamic behavior of the basin. The second objective was to establish a relationship between the hydrodynamics of the basin and levels of concentration of manganese (Mn),...

In this study, 8.2% of all registered fishermen in the coastal towns of Navachiste in Sinaloa, northwestern Mexico, answered a survey designed to collect data on their perceptions of the following topics: the impact of turtle meat consumption; human health; bycatch; illegal turtle fishing; the illegal sea turtle market; local economy; pollution; en...

Infectious diseases especially those caused by bacterial and viral pathogens are serious loss factors in shrimp farming. In this study, bacteria were isolated from the gut and hepatopancreas of stressed shrimps obtained from a commercial farm. The isolates were screened on Thiosulfate citrate bile salt sucrose (TCBS) agar plates for the selection o...

The objective of this study is to present an efficiency-perception impact assessment based upon the integration of fuzzy logic (FL) of the "Productive Reconversion" conservation program (PRP) instituted by the Mexican government, in the upper Gulf of California and the Colorado Delta Biosphere Reserve. This approach enables environmental analysts t...

Immune response of Lion’s paw scallop Nodipecten subnodosus to the challenge of Vibrio alginolyticus strain APSA2 was studied through the characterization of the activity of lysosomal enzymes and hemocyte size and number. Samples were obtained as hemocyte lysate supernatant (HLS) and plasma, after 6 and 24 hours, and 3, 6, and 10 days after challen...

Effect of probiotic bacteria on survival and growth of Cortez oyster larvae, Crassostrea corteziensis (Bivalvia: Ostreidae). Disease control problems have major constraints in aquaculture production, and the use of probiotics in larviculture is a valid alternative to antibiotics. This study analyzed the effect of probiotic bacteria on survival and...

Disease control problems have major constraints in aquaculture production, and the use of probiotics in larviculture is a valid alternative to antibiotics. This study analyzed the effect of probiotic bacteria on survival and final size of Cortez oyster larvae Crassostrea corteziensis. Two different probiotic concentrations were evaluated, 1 x 10(4)...

A 26-day bioassay was performed to evaluate the immunostimulating effect of lactic acid bacteria and yeasts (IM), added in the feed, in Litopenaeus vannamei. Bioassay treatments were performed in triplicate: I) control diet (Camaronina®); II) IM in food, daily; III) IM in food every three days and; IV) IM in food every six days. The shrimp were WSS...

Shrimp production in México has provided a rapid growth in the last 20 years. In Sinaloa shrimp culture presented an accelerated rise from 1984 to 1996; the production averaged was 16,000 tons since 1998 to 2002. This development has been caused negative effects on the environment, such as reduction of natural areas caused the pond construction and...

Shrimp production in México has provided a rapid growth in the last 20 years. In Sinaloa shrimp culture presented an accelerated rise from 1984 to 1996; the production averaged was 16,000 tons since 1998 to 2002. This development has been caused negative effects on the environment, such as reduction of natural areas caused the pond construction and...

Juvenile seed of the Cortés oyster Crassostrea corteziensis were exposed to Lactobacillus sp. isolated from Nodipecten subnodosus, a mix of Pseudomonas sp. and Burkholderia cepacia, a marine yeast strain, a commercial probiotic (Epicin®), and oxytetracycline to determine their effect on growth, survival, SOD activity, and protein content. Probiotic...

Even though the international trade system was originally developed without considering environmental protection, efforts are being made to join environmental and political aims. In Mexico, Baja California Sur (BCS) is the most arid state and that with the longest coastline. Efforts to insert BCS into the international market have usually reflected...

During 2003, we applied a set of 17th Sustainable Development Indicators to shrimp farms placed in a semitropical area of the Gulf of California. This set was useful to construct a Sustainability Index (SI) to evaluate their sustainable development rank between them. The set if indicators showed that climatic and marginal conditions similar between...

Even though the international trade system was originally developed without considering an environmental protection framework, efforts are being made to join environmental and political aims. In Mexico, Baja California Sur (BCS) is the most arid state and with more coastline than any other state in the country (2,200 km).

Aquaculture offers a major opportunity for the economic development of Baja California Sur (BCS), Mexico. The severely limited freshwater supply and the geographic isolation of the state place limits on other productive activities. Despite the aridity, the natural vegetation of BCS is diverse and structurally complex with a high percentage (20%) of...

During the year 2000, 12 modified and five new sustainable development indicators (SDIs) were applied and a sustainable index (SI) was developed for 21 out of the 33 semi-intensive shrimp farms in Sonora, Mexico, to measure their sustainable development. Farms 5, 7 and 19 showed the highest values in social indicators, farms 5, 7 and 19 in the econ...

Even though the international trade system was originally developed without considering environmental protection, efforts are being made to join environmental and political aims. In Mexico, Baja California Sur (BCS) is the most arid state and that with the longest coastline. Efforts to insert BCS into the international market have usually reflected...

Even though the international trade system was originally developed with- out considering an environmental protection framework, efforts are being made to join environmental and political aims. In Mexico, Baja California Sur (BCS) is the most arid state and with more coastline than any other state in the country (2,200 km). The purpose of this work...