Abstract The canned Amazon River prawn with sauce (tucupi and jambu) was thermally prepared (121 ºC) at three different times (T1: 15 T2: 20 and T3: 25 minutes) in glass bottles. The product obtained 20.86% crude protein, with good acceptance by consumers (global acceptance >7) measured through centesimal and sensory analysis of the hedonic scale. Increased exposure caused obvious changes in the sensorial characteristics of the product, which were not evidenced by consumers in the sensorial analysis, and for this reason, texture profile analysis (TPA) and color (CIELAB) were carried out, in addition to analyses of concentration of Total Volatile Basic Nitrogen (TVB-N), hydrogen potential (pH) and microbiological performed during 12 months, in addition to yield and weight loss by cooking. The sensory analysis did not show a significant difference between the treatments, however, the yield reduced with the application of heat, with the best yield being in treatment T1 (58.76 ± 0.49 a). The centesimal analysis showed excellent values of protein content of 20.86% and lipid content of 0.33%. The treatments followed the variation in color and texture according to the application of heat, mainly concerning the increase in the b* value (10.84 ± 0.70 to 13.50±0.24) and reduction in cohesiveness (0.56 ± 0.05 to 0.50 ± 0.04), gumminess (368.81± 109.23 to 262.09 ± 63.78 g) and chewiness (999.30 ± 356.92 to 633.71 ± 221.56 g). Despite this, the product proved to be safe during the analyzed period without the development of the remaining bacteria, even with an increase in pH (4.2 to 5.9) and TVB-N (20.22 to 28.46 mg/100 g), despite this, there was no development of the bacteria analyzed, proving to be a product suitable for industrial implementation. tucupi jambu 121 (12 ºC T (T1 1 T2 2 T3 minutes bottles 2086 86 20.86 global >7 7 scale reason TPA (TPA CIELAB (CIELAB out TVBN, TVBN TVB N , (TVB-N) (pH months cooking however heat 58.76 5876 58 76 (58.7 049 0 49 0.4 a. . a) 033 33 0.33% b 10.84 1084 10 84 (10.8 070 70 0.7 13.50±0.24 1350024 13 50 24 0.56 056 56 (0.5 005 05 0.0 050 0.5 0.04, 004 0.04 04 0.04) 368.81± 36881 368 81 (368.81 10923 109 23 109.2 26209 262 09 262.0 6378 63 78 63.7 g 999.30 99930 999 30 (999.3 35692 356 92 356.9 63371 633 71 633.7 22156 221 221.5 g. 4.2 42 4 (4. 5.9 59 5 9 20.22 2022 22 (20.2 2846 28 46 28.4 mg100 mg 100 mg/10 g, implementation (1 (T 208 8 20.8 > (TVB-N 58.7 587 (58. 0. 03 3 0.33 10.8 108 (10. 07 13.50±0.2 135002 (0. 00 368.81 3688 36 (368.8 1092 109. 2620 26 262. 637 6 63. 999.3 9993 99 (999. 3569 35 356. 6337 633. 2215 221. 4. (4 5. 20.2 202 (20. 284 28. mg10 mg/1 ( 20. 58. (58 0.3 10. (10 13.50±0. 13500 (0 368.8 (368. 999. (999 (20 mg1 mg/ (5 13.50±0 1350 368. (368 (99 (2 13.50± 135 (36 (9 13.50 (3 13.5 13.

Considerando a importância dos percevejos predadores como agentes de controle biológico e a necessidade de se otimizar sua produção massal, realizou-se o presente trabalho para avaliar a influência do peso corporal sobre a sobrevivência e a reprodução de fêmeas de Podisus rostralis (Stål) (Hemiptera: Pentatomidae). Os tratamentos foram constituídos por fêmeas desse predador com peso médio de: 39,5 mg, 45,5 mg, 51,5 mg, 57,5 mg e 63,5 mg. O período de preoviposição foi menor nas fêmeas mais pesadas, enquanto o número de ovos e de ninfas por dia apresentou relação linear positiva com o peso das fêmeas de P. rostralis. A longevidade das fêmeas desse predador foi semelhante entre tratamentos, porém não apresentou tendência de variação em razão do seu peso corporal. Como o objetivo de uma criação massal é produzir o maior número possível de ninfas por dia, recomenda-se o uso de fêmeas de P. rostralis com peso acima de 60,0 mg.

Considering the importance of predatory Pentatomidae as biological control agents it is necessary to optimize mass production facilities of these species. The objective of this research was to evaluate the influence of body weight on survival and reproductive parameters of females of Podisus rostralis (Stål) (Hemiptera: Pentatomidae). Treatments were represented by females of this predator with the following mean weight: 39.5 mg, 45.5 mg, 51.5 mg, 57.5 mg and 63.5 mg. Heavier females of P. rostralis showed shorter preoviposition period while the number of eggs and of nymphs per day presented a positive linear relationship with female weight of this predator. Longevity of females of P. rostralis was similar between treatments with no tendency of variations as a function of body weight of these females. Since the objective of mass rearing facilities of predatory bugs is to produce the maximum possible number of nymphs per day it is recommended to use females of P. rostralis with weight above 60.0 mg.

Este trabalho estudou o desenvolvimento ninfal, a reprodução e a taxa de predação de Podisus nigrispinus (Dallas) alimentados ou não com lagartas de Alabama argillacea (Huebner) em plantas de algodão no campo. Ninfas e adultos do predador foram confinadas em folhas de algodão sem alimentação ou alimentadas com duas lagartas de 70±10 mg oferecidas em intervalos de 1, 3 e 6 dias. O desenvolvimento ninfal de P. nigrispinus, exceto no terceiro ínstar, aumentou com o intervalo de alimentação. Ninfas sem alimento atingiram o terceiro ínstar com sobrevivência de 16,7% e 100% de mortalidade posteriormente. Com alimentação diária e a cada três dias, a sobrevivência de ninfas de P. nigrispinus foi maior que 60% e superior àquelas com alimentação a cada seis dias. A predação de lagartas por ninfas alimentadas diariamente foi 12,7 e 13,2 lagartas predadas por indivíduos que originaram machos e fêmeas, respectivamente, e de 54,7 lagartas por fêmea na fase adulta. Fêmeas, com alimentação diária, apresentaram maior fecundidade, porém com períodos de pré-oviposição, de reprodução e de longevidade semelhantes entre todos os intervalos de alimentação. O fornecimento diário de duas lagartas excedeu a taxa diária de predação de ninfas e adultos, que foi de 0,7 e 1,1 lagartas por dia, respectivamente. Intervalos de alimentação de três e seis dias afetaram o desenvolvimento e reprodução de P. nigrispinus.

Nymphal development, reproduction and predation rate of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) deprived of prey or preying upon Alabama argillacea (Huebner) (Lepidoptera: Noctuidae) were studied on cotton plants in field. Nymph and adult bugs were isolated by an organdie bag attached on cotton leaf and were deprived of prey or fed with two caterpillars of 70±10 mg every 1, 3 and 6 days. After the third instar the developmental time was delayed with food intervals. Nymphs deprived of prey reached the third instar with 16.7% survivorship, but 100% died at this stage. Nymphs feeding either daily or every three days showed survivorship superior to 60% and higher than those fed every six days. Predation of A. argillacea available daily was 12.7 and 13.2 caterpillars per nymphs when originated males and females, respectively. Additionally, females of P. nigrispinus preyed in mean 54.7 caterpillars. Females fed daily showed higher fecundity but pre-oviposition, reproductive and longevity periods were similar to the other feeding intervals. The dairy predation rate for nymphs and adults was 0.7 and 1.1 caterpillars per day; thus the availability of two caterpillars per day was in excess. The nymphal development and reproduction of P. nigrispinus were affected by food availability at three and six day's intervals.