Padrão de deslocamento do camarão marinho Litopenaeus vannamei (Boone) (Crustacea, Decapoda, Penaeidae) nas fases clara e escura ao longo de 24 horas

Pontes, Cibele Soares

doi:10.1590/s0101-81752006000100015

Cited by 8 publications

(10 citation statements)

References 21 publications

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“…Pesquisas em etologia aplicada têm como objetivo principal o entendimento e a promoção desse bem-estar, o que tem sido uma preocupação da sociedade contemporânea, confirmada pela criação da "International Society for Applied Ethology" (Isae) (Millman et al, 2004). No entanto, ainda são necessárias informações sobre o comportamento dos camarões em cativeiro, o que inclui a fase clara e escura do ciclo de 24 horas (Pontes, 2006;Lima et al, 2009).…”

Section: Introductionunclassified

Comportamento do camarão em diferentes substratos nas fases clara e escura do dia

Santos

Freire

Pontes³

2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito do tipo de substrato sobre a preferência, o enterramento e a atividade natatória de camarões (Litopenaeus vannamei). Juvenis (0,93±0,29 g) e adultos machos e fêmeas (10,05±1,18 g) foram observados durante 24 horas, por meio do método animal focal, com registros instantâneos. Foram testadas as seguintes granulometrias (tratamentos) dos substratos: I, 100% C; II, 50% C + 50% B; III, 50% A + 50% C; IV, 100% B; V, 50% B + 50% A; e VI, 100% A, em que as letras referemse ao diâmetro médio das partículas, A = 0,25-2,0 mm; B = 0,0625-0,25 mm; e C = <0,0625 mm. Foram aplicados seis tratamentos com 18 repetições para cada categoria: camarões juvenis, machos e fêmeas. Cada indivíduo foi exposto por 24 horas aos seis tipos de substrato, simultaneamente, e o seu comportamento foi observado nas fases clara e escura do dia. A natação ocorreu principalmente na fase escura e o enterramento, na fase clara, no substrato IV. Os camarões juvenis e adultos (machos ou fêmeas) preferem o substrato composto de areia fina e muito fina (0,0625-0,25 mm), tanto para permanência quanto para enterramento.Termos para indexação: Litopenaeus vannamei, bem-estar animal, carcinicultura, etologia aplicada. Shrimp behavior in different substrates in light and dark phases of the dayAbstract -The objective of this work was to evaluate the effect of substrate type on the preference, burial, and natatory activity of shrimp (Litopenaeus vannamei). Juvenile (0.93±0.29 g) and adult males and females (10.05±1.18 g) were observed during 24 hours using the focal animal method, with instantaneous recording. The following soil granulometries (treatments) were tested: I, 100% C; II, 50% C + 50% B; III, 50% A + 50% C; IV, 100% B; V, 50% B + 50% A; and VI, 100% A, in which the letters reffer to particle mean diameter, A = 0.25-2.0 mm, B = 0.0625-0.25 mm, and C = <0.0625 mm. Six treatments were applied with 18 replicates for each category: juvenile, male, and female shrimp. Each individual was simultaneously exposed for 24 hours to the six types of substrates, and its behavior was observed in the light and dark phases of the day. Swimming occurred mainly during the dark phase, and burial in the light phase in substrate IV. The juvenile and adult shrimp (male or female) prefer substrate composed of fine and very fine sand (0.0625-0.25 mm), both for residence and for burial.

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Section: Introductionunclassified

Comportamento do camarão em diferentes substratos nas fases clara e escura do dia

Santos

Freire

Pontes³

2013

Pesq. agropec. bras.

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“…According to Pontes and Arruda (2005) and Pontes (2006), who studied the behavior and displacement pattern of L. vannamei during light and dark periods, laboratory observations indicated that certain species of Penaeidae are much more active at night and thus more vulnerable to net capture. Hence, the results for P. muelleri obtained by the current study are consistent with those previously observed for members of the Penaeidae because 70% of the P. muelleri individuals were captured at night.…”

Section: Discussionmentioning

confidence: 99%

“…The collections at night constituted 66.4% of the total captures. Pontes (2006) investigated the displacement pattern of juvenile shrimp Litopenaeus vannamei (Boone, 1931) submitted to artificial photoperiodic conditions and observed that this displacement occurs primarily during the dark phase. This observation is consistent with the finding that the greatest activity of this species occurs during the dark.…”

Section: Discussionmentioning

confidence: 99%

“…This behavior provides protection against predators and also allows for a lower energy expenditure because the shrimp decrease their metabolic rate when burrowed (LAKSHMI et al, 1976;VANCE, 1992;CLARK et al, 2003). Laboratory experiments have indicated that at least certain species of Penaeidae are much more active at night and are thus more vulnerable to capture by nets (PONTES; ARRUDA, 2005;PONTES, 2006). According to Moctezuma and Blake (1981) and Simões et al (2010), the juveniles remain not burrowed for a longer period than do the adults because their food requirements are higher as a result of their high growth rate.…”

Section: Introductionmentioning

confidence: 99%

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Diel Variation in Abundance and Size of the South American Red Shrimp Pleoticus Muelleri (Spence Bate, 1888) (Decapoda, Solenoceridae) in the Ubatuba Region, Southeastern Brazil

et al. 2014

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A B S T R A C TDiel variation in the abundance and size of Pleoticus muelleri in the Ubatuba region was investigated during 2000. During each season of the year, sampling was conducted during the day and at night at 8 depths, from 5 to 40 m. The estimated number of shrimp was 955 individuals, 272 collected during the day and 683 at night. There was a difference in the abundance of P. muelleri between day and night (χ², p=2.33E-40). The abundance during the day and at night differed by season with the exception of the spring (χ², p=0.06). The abundance during both periods also differed by depth, except at 15 and 30 m, where it was not significant (χ², p=0.84 and 0.06, respectively). The shrimp caught at night were generally smaller than those caught during the day (Kolmogorov-Smirnov, p<0.01). Pleoticus muelleri juveniles were found primarily at night. This tendency could have influenced the lower mean size for this period. The sediment type and the bottom temperature appear to influence the behavior of this species and consequently the catch rate during the periods analyzed. R E S U M OA variação diuturna na abundância e no tamanho de Pleoticus muelleri foi investigada na região de Ubatuba durante o ano de 2000. Em cada estação do ano, as coletas foram realizadas no período diurno e noturno em 8 profundidades, de 5 a 40 m. O número estimado de camarões foi de 955 indivíduos, 272 coletados durante o dia e 683 à noite. Houve diferença na abundância de P. muelleri entre o dia e a noite (χ², p=2.33E-40). A abundância durante o dia e à noite diferiu por estação com exceção da primavera (χ², p=0.06). A abundância em ambos os períodos também diferiu por profundidade, exceto nos 15 e 30 metros (χ², p=0.84 e 0.06, respectivamente). Os camarões capturados à noite foram geralmente menores do que os capturados durante o dia (Kolmogorov-Smirnov, p<0.01). Os juvenis de Pleoticus muelleri foram encontrados principalmente à noite e tal tendência pode ter influenciado no menor tamanho médio obtido nesse período. O tipo de sedimento e a temperatura de fundo parecem influenciar o comportamento da espécie em questão e, consequentemente, a taxa de captura durante os períodos analisados.

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“…Previous results on behavioural and feeding activities as a function of feed offer suggest that feed must be offered in the light phase and at a greater proportion 7 h after sunrise (Pontes & Arruda 2005b; Pontes, Arruda, Menezes & Lima 2006). Substrate exploration behaviour, indicative of the search for feed, was more intense around this time (Pontes 2006).…”

Section: Discussionmentioning

confidence: 99%

Feeding responses of juvenile shrimpLitopenaeus vannamei(Boone) fed at different frequencies under laboratory conditions

Pontes

Lima

Arruda

2008

Aquaculture Research

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In shrimp farms, food partitioning during the course of the day is contradictory, ethology studies may help in determining the proper frequency. Litopenaeus vannamei juveniles were placed in 30 L aquariums (41m À 2 ), exposed to a 12:12 h light^dark cycle. Feeding was provided at 10% of biomass three, four and seven times per day, with observations made in 15 min h À 1 windows, initiated after the ration was o¡ered. Latency to access the feeding tray and to start eating was recorded using instantaneous focal sampling and digestive tract ¢lling (DTF) by the continuous focal method. Weight gain was recorded at the end of the experiment. We performed seven repetitions, with 28 individuals observed for 33 days for each treatment (490 h of observation). The threetimes o¡ering induced less latency for accessing the tray and for ingesting the feed as well as a higher DTF when compared with the other frequencies. Animals fed three and four times had similar weight gains, and were greater than those fed seven times. Our results indicate that a more spaced food o¡ering stimulates the search for and ingestion of feed. As compared with other frequencies, the three-timesper-day option assumes lower labour costs and a more e⁄cient use of the feed.

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Padrão de deslocamento do camarão marinho Litopenaeus vannamei (Boone) (Crustacea, Decapoda, Penaeidae) nas fases clara e escura ao longo de 24 horas

Cited by 8 publications

References 21 publications

Comportamento do camarão em diferentes substratos nas fases clara e escura do dia

Comportamento do camarão em diferentes substratos nas fases clara e escura do dia

Diel Variation in Abundance and Size of the South American Red Shrimp Pleoticus Muelleri (Spence Bate, 1888) (Decapoda, Solenoceridae) in the Ubatuba Region, Southeastern Brazil

Feeding responses of juvenile shrimpLitopenaeus vannamei(Boone) fed at different frequencies under laboratory conditions

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