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Resumen:La presencia de especies invasoras es un tema que está adquiriendo gran importancia debido al efecto en el medio ambiente que pueden generar. El objetivo del presente trabajo fue colectar información científica sobre una nueva especie invasora (Penaeus monodon) reportada en las costas mexicanas (2012), mostrando su posible origen, mecanismos de dispersión en las costas del Atlántico Americano y el riesgo potencial para el ecosistema. La información científica histórica sobre P. monodon en el Atlántico Americano señala que fue trasladado a Brasil y EUA en 1987-1988 con fines de cultivo, donde además se reportaron fugas de esta especie. Desde 1987 al 2016 se han detectado adultos silvestres de P. monodon en Brasil, Colombia, Costa Rica, Cuba, EUA, Guatemala, México, y Venezuela, lo que sugiere el establecimiento de esta especie en las aguas del Atlántico Americano. La evidencia también señala que P. monodon es un importante competidor de espacio y alimento de especies locales de camarón, posible depredador de otros crustáceos y reservorio / vehículo de diferentes agentes patógenos (virus, bacterias y parásitos). Es importante profundizar en las investigaciones sobre la dinámica poblacional que presenta esta especie en aguas del Atlántico Americano, sus mecanismos de distribución, consecuencias potenciales que puede generar su crecimiento poblacional sobre la biota nativa, además de su importancia como reservorio natural de agentes patógenos virales que afecten la producción de camarón silvestre y de cultivo.

Effect of delayed icing on the quality of Penaeus monodon iced after three hours of harvest was studied in plastic and bamboo baskets. After harvest of three hours at ambient temperature (28°-32°C), ice was added to the shrimp at a ratio of 1:1 (shrimp:ice) and stored for 21 hours in both the baskets. Quality evaluation was carried out through visual assessment, biochemical analysis and microbial analysis for 24 hours. The organoleptic evaluation and scoring was done from the time of harvest treated as 0 hour and the average score was 10. At 9th hour after iced condition quality of shrimp was found reduced to the next stage (acceptable) with a score ranged from 8.4-6.5 in both baskets. This acceptable stage was observed throughout the experiment for bamboo basket whereas in the plastic basket the quality was reduced to a small extent with a score of 6.4 (moderately acceptable). Till the end point of the experiment the quality of shrimp was acceptable in respect to biochemical analysis. The microbial load was found log sub(10) 3.99±0.12 cfu/g to log sub(10) 4.33±0.21 cfu/g and log sub(10) 4.01 ±0.12 cfu/g to log sub(10) 4.83±0.19 cfu/g in the bamboo and plastic basket respectively. The importers or buyers suggests for immediate icing to maintain good quality but results of the present experiment suggest that the quality does not vary drastically for first three hours.

This paper reports a study on the benthic faunal abundance and diversity of tiger shrimp P. monodon culture ponds in Perak, west coast of Malaysia Peninsular. Sampling was carried out at three weeks interval throughout the 116 days culture period. In addition, water temperature, dissolved oxygen, salinity, transparency, pH and organic matter of soil were also measured. Results showed that the major groups of macro-benthos comprised of gastropod, foraminifera, polychaetes, bivalve and insects; whereas the meio-benthos comprised of harpacticoid copepods, ostracods, nematodes, gastropods, foraminifera, bivalve, insects, crustacean nauplii and polychaetes. In macro-benthos, the abundance of different sizes of Gastropods increased throughout the culture duration. This consisted of 37-98.20% for 2cm length. Other macro and meio-benthic organisms decreased linearly with the culture period. The depletion symptom indicates that the culture species may have intensively preyed upon the consumable (

This is the first report of the presence of Penaeus monodon off the Guajira Peninsula in the Colombian Caribbean. Three specimens were collected near Cabo de la Vela and one in Punta Gallinas at the continental shelf, while trawling for shrimps.