Efecto de Vibrio harveyi en la sobrevivencia de larvas de Litopenaeus vannamei
DOI:
https://doi.org/10.17268/sci.agropecu.2013.02.05Palavras-chave:
Litopenaeus vannamei, camarón, infección, sobrevivencia, Vibrio harveyiResumo
Los cultivos acuícolas son de gran relevancia en la alimentación humana, pero crean un medio ambiente artificial que promueve el crecimiento de diferentes especies de bacterias. Las especies del género Vibrio son bacterias de la microflora normal de los camarones peneidos y son también agentes patógenos oportunistas que pueden tomar ventaja de éstos cambios ecológicos generados en los cultivos acuícolas causando diferentes enfermedades, sobrevivencias bajas y pérdidas económicas en la producción de camarón. El objetivo de la presente investigación fue determinar la variación en la sensibilidad, de diferentes subestadios larvarios (nauplio, zoea I-III, misis I-III) y en el de postlarva 1, del camarón blanco del Pacifico Litopenaeus vannamei al ser expuestos a tres dosis [103 , 105 , y 107 unidades formadoras de colonias (UFC) ml-1 ] de V. harveyi, mediante infecciones por inmersión (30 min). Esta especie generó una sobrevivencia baja significativa en las larvas (p < 0,05) solamente en las dosis más altas (105 y 107 UFC ml-1 ), siendo la última dosis la que presentó los valores más bajos de sobrevivencia. Además, se observó que los subestadios larvales y en el de postlarva 1 fueron más resistentes a V. harveyi al aumentar la edad de los mismos. Esta información tiene gran significado para la industria acuícola, ya que les permite generar estrategias que disminuyan los efectos de V. harveyi y que les permita mejorar el crecimiento y sobrevivencia de las larvas y de postlarva 1 del camarón.Referências
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Received: 30/04/13
Accepted: 2905/13
Corresponding author: E-mail: gabaguirre@uat.edu.mx (G. Aguirre-Guzmán)
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