Prevalence and distribution of different pathogens of wild shrimp in the tidal channels of the Region Tumbes - Peru, during March to December 2009. The tidal channels considered in this study were: Boca del Rio Tumbes, El Alcalde, Jelí, El Bendito, Envidia, Soledad and Algarrobo. We collected a total of 1926 shrimps between juvenile and pre-adults of the species Litopenaeus vannamei, L. stylirostris y Farfantepenaeus californiensis. Using the PCR technique, detected the presence of pathogens NHPB (0.62%), IHHNV (0.31%), BP (1.61%) and WSV (2.75%); no infection was found by TSV. The three species studied were positive for WSV and BP showed the highest prevalence of WSV infection (2.98%) in the species L. stylirostris and BP (2.66%) in L. vannamei. The NHPB was detected in the species L. vannamei, L. stylirostris to 0.77% and 0.43% prevalence respectively. There was a prevalence of 0.52% ...

Neoraimondia arequipensis subsp. gigantea is registered in the dry forests of Tumbes, expanding its geographical distribution in northern Peru, based on the phenotypic identification of 70 individuals and genotypic by sequencing the matK gene (Maturase K gene). The habitat of this species is characterized by the presence of stony and rocky soil, located adjacent to areas of ravines and altitudes between 20 to 60 meters above sea level. In addition, we include the record of biological interactions of this cactus with endemic fauna and flora of the department of Tumbes.

Se determinó la prevalencia y distribución de diferentes agentes patógenos en langostinos silvestres, en la zona de esteros de la Región Tumbes - Perú, entre marzo y diciembre de 2009. Los canales de marea considerados en este estudio fueron: Boca del Río Tumbes, El Alcalde, Jelí, El Bendito, Envidia, Soledad y Algarrobo. Se colectó un total de 1926 langostinos entre juveniles y pre-adultos de las especies Litopenaeus vannamei, L. stylirostris y Farfantepenaeus californiensis. Utilizando la técnica de la PCR, se detectó la presencia de los patógenos NHPB (0,62%), IHHNV (0,31%), BP (1,61%) y WSV (2,75%); no se encontró infección por TSV. Las tres especies en estudio fueron positivas a WSV y BP, presentándose la mayor prevalencia de infección por WSV (2,98%) en la especie L. stylirostris y por BP (2,66%) en L. vannamei. La NHPB fue detectada en las especies L. vannamei y L. ...

Neoraimondia arequipensis subsp. gigantea is registered in the dry forests of Tumbes, expanding its geographical distribution in northern Peru, based on the phenotypic identification of 70 individuals and genotypic by sequencing the matK gene (Maturase K gene). The habitat of this species is characterized by the presence of stony and rocky soil, located adjacent to areas of ravines and altitudes between 20 to 60 meters above sea level. In addition, we include the record of biological interactions of this cactus with endemic fauna and flora of the department of Tumbes.

La investigación realizada en el 2007, comprende la patobiología y sanidad acuícola en langostinos de cultivo y de los canales de marea de la Región Tumbes, para detectar presencia y distribución espacio-temporal del agente etiológico NHPB (Bacteria de la hepatopancreatitis necrotizante). Se analizaron 3360 langostinos de nueve empresas con cultivo intensivo para detectar la NHBP. Los resultados fueron: (1) prevalencia global de 2% en el periodo de estudio; (2) NHPB estuvo presente en el 77% de las zonas con cultivo intensivo incluidas en este estudio, distribuidas a lo largo del litoral tumbesino.

El IMARPE Tumbes programó el 2007 el monitoreo de Penaeus vannamei y P. stylirostris en los esteros de la Región, para detectar presencia y distribución del virus de la mionecrosis infecciosa (IMNV). Se colectaron 2407 especímenes, y se concluyó que las poblaciones silvestres de P. vannamei y P. stylirostris se encontraban libres del virus.

El valor comercial a nivel nacional e internacional que tienen Centropomus nigrescens “robalo” y Micropogonias altipinnis “corvina dorada”, es una alternativa potencial para desarrollar sus cultivos en Tumbes. Por ello, se realizó un estudio para identificar su fauna parasitaria, que podría poner en riesgo los potenciales cultivos de esas especies. Se examinó 92 ejemplares de M. altipinnis y 39 de C. nigrescens, detectándose los parásitos Tagia sp. (Monogenea) y Lernanthropus sp. (Copepoda) en M. altipinnis con prevalencia de 69,57% y 4,35%, respectivamente. En C. nigrescens se determinó Lernanthropus sp. (Copepoda) y Nerocila sp. (Isopoda) con prevalencias de 66,67% y 2,56%, respectivamente. Las elevadas prevalencias de algunos de los parásitos encontrados, indican que, si estos peces fueran sometidos a cultivo, podrían desarrollar índices parasitarios intensos, siendo ...

The aim of the study was to isolate and identify native lactobacillus microorganisms from the digestive tract of piglets with the possibility of using them for the improvement of the productive performance of piglets. Samples were cultured and purified on Man, Rogosa and Sharpe (MRS) agar. Molecular identification of the bacteria was done by the sequencing the 16S rRNA gene. Four species were identified: Lactobacillus johnsonii, Lactobacillus brevis, Enterococcus hirae and Pediococcus pentosaceus.

The composition and abundance of the bacterial microbiota in three portions of the gastrointestinal tract of a piglet, in the balanced feed and in biological ensilages prepared with residues of aquaculture origin were evaluated by metagenomic analysis. The DNA of the samples was extracted, and sequenced. The greatest bacterial diversity was in the balanced feed (44.7%), with the predominance of Candidatus phytoplasma surgarcane. In the biological silage predominated Lactobacillus casei and Lactococcus lactis. The existing diversity was similar between silage and the concentrate feed. Similarities were found between the bacteria of the three gastrointestinal regions (L. ultunensis, Selenomonas bovis, Prevotella copri, Enterococcus lactis y Campylobacter sp). In the stomach predominated Helicobacter rappini and Campylobacter coli, in the small intestine Selenomonas bovis and Lactobacillus ...

The aim of the study was to isolate and identify native lactobacillus microorganisms from the digestive tract of piglets with the possibility of using them for the improvement of the productive performance of piglets. Samples were cultured and purified on Man, Rogosa and Sharpe (MRS) agar. Molecular identification of the bacteria was done by the sequencing the 16S rRNA gene. Four species were identified: Lactobacillus johnsonii, Lactobacillus brevis, Enterococcus hirae and Pediococcus pentosaceus.

The composition and abundance of the bacterial microbiota in three portions of the gastrointestinal tract of a piglet, in the balanced feed and in biological ensilages prepared with residues of aquaculture origin were evaluated by metagenomic analysis. The DNA of the samples was extracted, and sequenced. The greatest bacterial diversity was in the balanced feed (44.7%), with the predominance of Candidatus phytoplasma surgarcane. In the biological silage predominated Lactobacillus casei and Lactococcus lactis. The existing diversity was similar between silage and the concentrate feed. Similarities were found between the bacteria of the three gastrointestinal regions (L. ultunensis, Selenomonas bovis, Prevotella copri, Enterococcus lactis y Campylobacter sp). In the stomach predominated Helicobacter rappini and Campylobacter coli, in the small intestine Selenomonas bovis and Lactobacillus ...