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Cadmium and lead levels were evaluated in water and sediment along the estuarine ecosystem of Tigre River-San Andres Lagoon (Gulf of Mexico) during September to December 2009. Significant highest metal concentration in water (0.45 mg L Cd and 3.94 mg L Pb) and sediment (2.83 mg kg Cd and 6.61 mg kg Pb) were found at the mouth of the Tigre River, where the fishing town of El Moron is located. Cadmium levels in sediment were above limits associated with adverse biological effects on aquatic fauna, so negative impacts on natural populations of aquatic organisms would be expected to occur. This in turn could affect the fishery resources inhabiting this ecosystem. [ABSTRACT FROM AUTHOR]

A 3-year-old male Bloodhound dog was presented to a private veterinary hospital at Ciudad Victoria, Tamaulipas, Mexico, with a 2-week history of weight loss, generalized weakness, anorexia and ptyalism. Results of a hemogram revealed moderate anemia with a chronic inflammatory leukogram. Also, various neutrophlis (approximately 10%) containing elongated pale blue staining intracytoplasmic inclusions, compatible with gametocytes of Hepatozoon spp were observed. Up until now, this is the first case report of canine hepatozoonosis detected in Tamaulipas. [ABSTRACT FROM AUTHOR]

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The article discusses the detection of channel catfish virus (CCV) associated with mortality of cultured channel catfish in Mexico. The good quality of channel catfish' flesh and flavor has resulted the increase catfish consumption and growing fish farming industry. However, the detection of Herpesvirus ictaluri CCV was first isolated in the U.S. in 1960 that led the high mortality rates with significant economic losses of catfish industry. The histophathological examination has revealed multifocal necrotic areas and hemorrhage in the internal organs with viral infection.The CCV's infection is the most severe of the fish herpesvirus which proliferation was caused by stressful environmental conditions such as high temperature, low water quality, low oxygen level and poor feeding.