Acesso ao alimento artificial e enchimento do trato digestivo de juvenis do camarão marinho Litopenaeus vannamei (Boone) (Crustacea, Decapoda, Penaeidae) durante as fases clara e escura do período de 24 horas

Pontes, Cibele Soares; Arruda, Maria de F.

doi:10.1590/s0101-81752005000400032

Cited by 13 publications

(17 citation statements)

References 14 publications

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“…Although substrate exploration occurs in both phases, and considering it the main behaviour involved in procuring feed, it is feasible to affirm that the optimal moment for acquiring feed occurs 7 h after light onset and, to a lesser degree, 7 h after dark onset. Additional data (Pontes & Arruda 2005) demonstrated that L. vannamei access the feeding trays and start consumption faster, displaying higher digestive tract filling during the light phase hours. Thus, the results indicate that feed must be offered in the light phase, and at a greater proportion 7 h after sunrise.…”

Section: Discussionmentioning

confidence: 98%

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

et al. 2006

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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.

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Section: Discussionmentioning

confidence: 98%

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

et al. 2006

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“…Another f actor that must be considered in the dietary management of s h rimps is the gastric ingestion and evacuation times that can influ e nce the return of appetite time. For L. vannamei, food intake occurs rapidly during the day, mainly in the half hour after feed offer (Pontes & Arruda, 2005). Gastric evacuation time varies among species and studies with juvenile shrimps estimated that the food ingested by F. paulensis (Soares, Wasielesky, Peixoto, & D'incao, 2005) and Farf a ntepenaeus subtilis (Nunes & Parsons, 2000) is completely evacuated within 4 hr.…”

Section: Discussionmentioning

confidence: 99%

Effect of feeding frequency on growth and enzymatic activity ofLitopenaeus vannameiduring nursery phase in biofloc system

et al. 2017

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This study evaluated the zootechnical performance and enzymatic activity of Litopenaeus vannamei reared at different feeding frequencies during the nursery phase in biofloc system. The experiment consisted of four treatments, corresponding to the feeding frequencies of one, two, three and four times a day. Twelve-day postlarvae (PL12) were stocked in 12 circular tanks at a density of 3,000/m 2 for 35 days. These tanks were connected to a recirculation system supplied by a matrix tank where biofloc management was carried out. Water quality remained within acceptable limits for the species over the experiment. Food frequencies had no influence on survival (88.5-92.7%) and feed conversion ratio (1.5-1.7), but the final mean weight (0.43-0.56 g) was significantly higher in shrimp fed three times a day. This fact is probably associated with amylase (14.58 U/mg) and trypsin (23.84 U/mg) activities, as well as the significant increase of chymotrypsin (11.74 U/mg) and lipase (1.27 U/mg) in shrimp of this treatment at the end of culture period. Feeding three times a day provided the highest enzymatic activity and the best zootechnical performance of L. vannamei during the nursery phase in biofloc system. K E Y W O R D Sbiofloc, enzyme, feeding, growth, shrimp

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“…The response to feed in the afternoon was not significant. A study of juvenile L. vannamei conducted by Pontes and Arruda (2005b) established that consumption was faster in the early morning and early afternoon. Lima et al (2009) recorded higher food ingestion in the early afternoon, between 12:00 and 14:00.…”

Section: Discussionmentioning

confidence: 99%

A study of feeding in the shrimpFarfantepenaeus subtilisindicates the value of species level behavioral data for optimizing culture management

Silva

Medeiros

Silva

et al. 2012

Marine and Freshwater Behaviour and Physiology

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This study characterized a number of the behaviors of Farfantepenaeus subtilis in response to the offer of feed at different times during a 24 h cycle. Shrimp were observed under laboratory conditions during 12 h light-12 h dark cycles, before and immediately after feeding. The behaviors recorded were: burrowing, substrate exploration, vertical exploration, ingestion, swimming, inactivity, and crawling. The frequencies of all these behaviors increased in the presence of food, independent of time or light phase. The consumption of feed was more frequent in the morning. The results showed that the rhythm of activity is influenced by the light-dark cycle and the availability of food. The results are different from those reported for other shrimp species and indicate the potential value of understanding the behavioral details of each species for optimizing their management.

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Acesso ao alimento artificial e enchimento do trato digestivo de juvenis do camarão marinho Litopenaeus vannamei (Boone) (Crustacea, Decapoda, Penaeidae) durante as fases clara e escura do período de 24 horas

Cited by 13 publications

References 14 publications

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

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

Effect of feeding frequency on growth and enzymatic activity ofLitopenaeus vannameiduring nursery phase in biofloc system

A study of feeding in the shrimpFarfantepenaeus subtilisindicates the value of species level behavioral data for optimizing culture management

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