Daily activity pattern of the marine shrimp Litopenaeus vannamei (Boone 1931) juveniles under laboratory conditions

Abstract

Lack of information on the daily activity patterns of Litopenaeus vannamei (Boone 1931) might result in inadequate feed management strategies in shrimp farms. In order to provide information to improve feed management in shrimp farms, the daily activity of juvenile shrimp reared in glass aquaria was studied, using L. vannamei (7.57±1.01 g), equivalent to 33 shrimp m−2. Thirty‐two shrimp were observed, half in light and half in dark phase, over 280 h in 15 min h−1 windows. Feed was provided once a day, at 10% of tank biomass. Swimming, exploration of substrate, inactivity and cleaning were recorded through instantaneous focal sampling. During the dark phase, swimming was predominant and alternated with exploration. In the light phase, inactivity was predominant, and again alternated with exploration. Cleaning occurred evenly in both the light and the dark. Substrate exploration, which characterizes the search for food, occurred in both dark and light phases, with a most intense peak 7 h after light phase onset, indicating this as the optimal feed offer.

Behavior activities of Macrobrachium rosenbergii (De Man, 1879) in monosex and mixed populations, in the laboratory

“…Similar behavior has been J Anim Behav Biometeorol (2018) 6:33-40 registered by Pontes et al (2006) and Santos et al (2013) with regards to L. vannamei. Reports on inactivity are more frequent during the dark phase, with the exception of the monosex all-female population.…”

“…Monitoring started after a 10-day adaptation period to the aquarium´s physical conditions (Pontes et al 2006) and after the establishment of the prawns´ social hierarchy (Fero et al 2007). Prawns were fed from troughs (transparent acrylic trays) on 10% biomass/day, with pellet rations containing 35% crude protein (Camaronina 35 -Agribrands do Brasil Ltda.…”

“…Ethological studies have been applied to shrimp farming Arruda 2005a, 2005b;Pontes et al 2006;Lima et al 2009;Silva et al 2012;Santos et al 2013;Silva and Arruda 2014;Santos et al 2015;Santos and Pontes 2016), particularly for freshwater shrimps of the genus Macrobrachium. In fact, several research works deal with the prawn´s morphology (Brody et al 1980;Cohen et al 1981;Ra'Anan and Cohen 1985;Ra'Anan and Sagi 1985;Kuris et al 1987;Ra'Anan et al 1991), agonism (Barki et al 1991;Sousa and Singer-Brugiolo 2001;Balasundaram et al 2004;Short 2004;Karplus 2005), zootechnical performance (Du and Niu 2003;Lan et al 2006) and animal performance in monosex cultures (Nair et al 2006;Santos et al 2015).…”

Influencia de la alimentacion sobre el ritmo circadiano de las enzimas digestivas en el cultivo de juveniles de la langosta de agua dulce Cherax quadricarinatus (Parastacidae)

“…A su vez, Pontes & Arruda (2005) demostraron que L. vannamei accede a las bandejas de alimento e inicia un consumo rápido mostrando un mayor contenido en el tracto digestivo durante las horas de luz, por lo tanto estos resultados indican que el alimento debe ser ofrecido en la fase de luz, y en mayor proporción 7 h después del amanecer (Pontes et al, 2006).…”

Efecto de la adición del rotífero Brachionus rotundiformis (Tschugunoff, 1921) sobre la calidad del agua y la producción, en cultivos super-intensivos de camarón blanco del Pacífico Litopenaeus vannamei (Boone, 1931)

“…Se considera que el insumo más costoso en la producción comercial de camarón es el alimento artificial, el cual llega a representar más del 50% de los costos operativos en granjas camaronícolas semiintensivas (Zendejas-Hernández 1994, Martínez-Córdova et al 2003, Pontes et al 2006. Los alimentos artificiales comerciales que se utilizan en la actualidad para el cultivo de camarón se formulan bajo condiciones de laboratorio con lo cual se ignora la contribución del alimento natural y el efecto de las condiciones de cultivo (Jory 2000, Tacon 2002).…”