scholarly journals Effects of Diet Quality and Temperature on Stable Fly (Diptera: Muscidae) Development

Insects ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 207 ◽  
Author(s):  
Melina Florez-Cuadros ◽  
Dennis Berkebile ◽  
Gary Brewer ◽  
David B. Taylor
Keyword(s):  
Adult Development ◽  
Diet Quality ◽  
Development Time ◽  
Adult Survival ◽  
Thermal Constant ◽  
Stable Fly ◽  
Thermal Threshold ◽  
Stable Flies ◽  
Adult Fitness ◽  
Quality Diet

The effects of diet quality and temperature on the development time and size of stable flies, Stomoxys calcitrans (L.), was evaluated. Both development time and size varied relative to diet quality and temperature, and their effects were additive. Diet quality and temperature made similar contributions to the variance in size whereas temperature was responsible for >97% of the variance in development time. Regression analysis predicted the shortest development time, egg to adult, to be 12.7 days at 32 °C and 70% nutrients. Egg to adult development varied curvilinearly relative to diet quality and temperature on the degree day 10 (DD10) scale taking 261 DD10 at 30 °C and 50% nutrients. The thermal threshold was 11.5 °C with a thermal constant of 248. Very few stable flies developed to adult on the poorest diet (12.5% nutrients) and adults emerged from fewer than 1% of the puparia at 35 °C. The heaviest pupae (15.4 mg) were produced with the 100% diet at 15 °C and adults had a higher probability of emerging successfully from heavier puparia. The length of the discal-medial cell of adult wings had a cubic relationship with puparia weight and peaked at 21 °C. Egg to pupariation survival was predicted to peak at 27 °C and 71% diet whereas puparia to adult survival peaked at 24 °C and 100% diet. Diet quality and temperature had no effect on sex ratio and the rate of development did not differ between the sexes. Female stable flies were ≈5% larger than males. Composite metrics for egg to pupariation and egg to adult fitness were developed. The optimum for puparia fitness was 29 °C and 78% diet quality and for adult fitness 25 °C and 83% diet quality. Diet accounted for 31% of the variance in pupal fitness and 24% of the variance in adult fitness whereas temperature accounted for 17% and 20%, respectively.

Diet Quality, a Term Subject to Change over Time

2012 ◽  
Vol 82 (3) ◽  
pp. 144-147 ◽  
Author(s):  
Ibrahim Elmadfa ◽  
Alexa L. Meyer
Keyword(s):  
Diet Quality ◽  
Functional Foods ◽  
Disease Risk ◽  
Well Being ◽  
Industrialized Countries ◽  
Quality Factors ◽  
Long Time ◽  
Quality Diet ◽  
Important Quality ◽  
Health And Well Being

A high-quality diet is one of the foundations of health and well-being. For a long time in human history, diet was chiefly a source of energy and macronutrients meant to still hunger and give the strength for work and activities that were in general much harder than nowadays. Only few persons could afford to emphasize enjoyment. In the assessment of quality, organoleptic properties were major criteria to detect spoilage and oxidative deterioration of food. Today, food hygiene is a quality aspect that is often taken for granted by consumers, despite its lack being at the origin of most food-borne diseases. The discovery of micronutrients entailed fundamental changes of the concept of diet quality. However, non-essential food components with additional health functions were still barely known or not considered important until recently. With the high burden of obesity and its associated diseases on the rise, affluent, industrialized countries have developed an increased interest in these substances, which has led to the development of functional foods to optimize special body functions, reduce disease risk, or even contribute to therapeutic approaches. Indeed, nowadays, high contents of energy, fat, and sugar are factors associated with a lower quality of food, and products with reduced amounts of these components are valued by many consumers. At the same time, enjoyment and convenience are important quality factors, presenting food manufacturers with the dilemma of reconciling low fat content and applicability with good taste and appealing appearance. Functional foods offer an approach to address this challenge. Deeper insights into nutrient-gene interactions may enable personalized nutrition adapted to the special needs of individuals. However, so far, a varied healthy diet remains the best basis for health and well-being.

scholarly journals Diet Quality Is Associated with a High Newborn Size and Reduction in the Risk of Low Birth Weight and Small for Gestational Age in a Group of Mexican Pregnant Women: An Observational Study

Nutrients ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1853
Author(s):  
María A. Reyes-López. ◽  
Carla P. González-Leyva ◽  
Ameyalli M. Rodríguez-Cano ◽  
Carolina Rodríguez-Hernández ◽  
Eloisa Colin-Ramírez ◽  
...  
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Nutritional Status ◽  
Diet Quality ◽  
Gestational Age ◽  
Small For Gestational Age ◽  
Mexican Women ◽  
High Quality ◽  
Quality Diet ◽  
Newborn Size

A high-quality diet during pregnancy may have positive effects on fetal growth and nutritional status at birth, and it may modify the risk of developing chronic diseases later in life. The aim of this study was to evaluate the association between diet quality and newborn nutritional status in a group of pregnant Mexican women. As part of the ongoing Mexican prospective cohort study, OBESO, we studied 226 healthy pregnant women. We adapted the Alternated Healthy Eating Index-2010 for pregnancy (AHEI-10P). The association between maternal diet and newborn nutritional status was investigated by multiple linear regression and logistic regression models. We applied three 24-h recalls during the second half of gestation. As the AHEI-10P score improved by 5 units, the birth weight and length increased (β = 74.8 ± 35.0 g and β = 0.3 ± 0.4 cm, respectively, p < 0.05). Similarly, the risk of low birth weight (LBW) and small for gestational age (SGA) decreased (OR: 0.47, 95%CI: 0.27–0.82 and OR: 0.55, 95%CI: 0.36–0.85, respectively). In women without preeclampsia and/or GDM, the risk of stunting decreased as the diet quality score increased (+5 units) (OR: 0.62, 95%IC: 0.40–0.96). A high-quality diet during pregnancy was associated with a higher newborn size and a reduced risk of LBW and SGA in this group of pregnant Mexican women.

Isolation of Enterobacter sakazakii from Stable Flies, Stomoxys calcitrans L. (Diptera: Muscidae)†

2006 ◽  
Vol 69 (3) ◽  
pp. 671-673 ◽  
Author(s):  
F. MRAMBA ◽  
A. BROCE ◽  
L. ZUREK
Keyword(s):  
16S Rdna ◽  
Foodborne Pathogen ◽  
Animal Manure ◽  
Stomoxys Calcitrans ◽  
Fecal Coliforms ◽  
Stable Fly ◽  
Enterobacter Sakazakii ◽  
Stable Flies ◽  
16S Rdna Pcr ◽  
Glucose Agar

Enterobacter sakazakii is an opportunistic foodborne pathogen that causes meningitis, enterocolitis, and sepsis, primarily in immunocompromised infants. Previously, it was suggested that stable flies, Stomoxys calcitrans, were a vector or reservoir of this pathogen. In our study, by means of a culturing approach combined with 16S rDNA PCR–restriction fragment length polymorphism genotyping and sequencing, we screened 928 individual stable flies collected in Kansas and Florida. Two stable flies (0.2%) were positive for E. sakazakii. In addition, 411 (44%) stable flies carried bacteria-forming red colonies (presumably enterics) on a violet red bile glucose agar (mean count = 6.4 × 104 CFU per fly), and 120 (13%) stable flies carried fecal coliforms (mean count = 8.7 × 103 CFU per fly). Sequencing of 16S rDNA showed that enterics from violet red bile glucose agar were represented by several genera, including Escherichia, Shigella, Providencia, Enterobacter, Pantoea, Proteus, Serratia, and Morganella. Our study shows that stable flies carry bacteria typically present in animal manure (a developmental site of stable fly larvae), which indicates that the natural reservoir of E. sakazakii is the digestive tract or manure of domestic animals. The low prevalence of E. sakazakii associated with stable flies suggests that stable flies do not play a major role as a reservoir or vector of this pathogen.

scholarly journals Does exposure of maleDrosophila melanogasterto acute gamma radiation influence egg to adult development time and longevity of F1-F3offspring?

2014 ◽  
Vol 18 (3) ◽  
pp. 368-376 ◽  
Author(s):  
P. Mohamed Shameer ◽  
K. Sowmithra ◽  
B. P. Harini ◽  
R. C. Chaubey ◽  
S. K. Jha ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Adult Development ◽  
Development Time

Association of food quality index with subclinical inflammation in middle-aged obese men

2021 ◽  
pp. 1-9
Author(s):  
M.L. Bellotto ◽  
A. Castro ◽  
I.L.P. Bonfante ◽  
D.T. Brunelli ◽  
M.P.T. Chacon-Mikahil ◽  
...  
Keyword(s):  
Food Quality ◽  
Diet Quality ◽  
Quality Index ◽  
Inflammatory Responses ◽  
Pearson Correlation ◽  
Food Groups ◽  
Positive Correlation ◽  
Inflammatory Status ◽  
Quality Diet ◽  
Anti Inflammatory

BACKGROUND: High visceral fat storage unbalance secretion inflammatory peptides, however diet plays an important role-protecting metabolism against chronic diseases inherent to this condition. OBJECTIVE: To assess obese diet quality and find association with inflammatory biomarkers. METHODS: aMED, a Food Quality Index, classified the inflammatory power of 26 obese men’s diet (aged: 48.1±5.1; BMI: 31.1±2.45). Pearson correlation coefficient associated diet quality in tertiles (1st as low, 2nd as average and 3 rd as high quality diet) with inflammatory variables (cytokines and waist circumference). RESULTS: The intake of anti-inflammatory food groups was significantly higher among tertiles (3rd >  2nd >  1st; P <  0.001). Adiponectin was lower in the 2nd tertile than in the 1st (P <  0.05). Whole cereal presented a positive correlation with TNF-alpha (p = 0.049), and a negative correlation with IL–15 (p = 0.002). Fish presented a positive correlation with IL–10 (p = 0.024), Resistin (p = 0.039) and PGE–2 (p = 0.001). These findings pointed to pro and anti-inflammatory responses. CONCLUSIONS: The method may need adjustments when used to assess obese food intake, since they don't usually meet the daily-recommended intake. Other lifestyles variables should be considered, which may affect the inflammatory status.

scholarly journals Thermal requirements and estimated number of generations of Neopamera bilobata (Say) in strawberry-producing regions of Brazil

2017 ◽  
Vol 48 (1) ◽  
Author(s):  
Taciana Melissa de Azevedo Kuhn ◽  
Alci Enimar Loeck ◽  
Marcos Botton
Keyword(s):  
Adult Stage ◽  
Thermal Constant ◽  
Rio Grande Do Sul ◽  
Degree Days ◽  
Climate Chamber ◽  
Thermal Threshold ◽  
Developmental Threshold ◽  
Thermal Requirements ◽  
Developmental Thresholds ◽  
The Mean

ABSTRACT: The thermal threshold and thermal requirements of Neopamera bilobata were determined, and the number of generations that this species may produce in the main strawberry-producing regions of Brazil was estimated. In a climate chamber (70±10% RH and 12h photophase) at 16, 19, 22, 25, 28, or 30±1°C, the development of 120 eggs was monitored until the adult stage, at each temperature. Nymphs were maintained in individual cages and fed on strawberry fruits of the cultivar Aromas. The mean duration and viability of the egg and nymph stages were calculated by estimating the lower and upper developmental thresholds and the thermal constant, and this information was used to estimate the number of generations per year in different strawberry-producing regions of Brazil. The egg-to-adult duration decreased as temperatures increased, up to 28°C (93.4, 83.2, 43.9, and 31.4 days at 19, 22, 25, and 28°C, respectively). Viability of nymphs was highest between 22 and 28°C. At 30°C, the egg-to-adult duration increased (36 days), while the viability decreased (11.11%). The lower egg-to-adult developmental threshold was 15.2°C and the thermal constant was 418.4 degree-days. Calculating the number of generations indicated that the largest number (5.1 generations yr-1) was obtained for the municipality of Jaboti, Paraná, and the smallest for Caxias do Sul, Rio Grande do Sul (1.9 generations yr-1). Our findings demonstrated that important strawberry-producing regions in Brazil are suitable for the development of N. bilobata.

DENSITY ESTIMATES AND DAILY MORTALITY RATE EVALUATIONS OF STABLE FLY (STOMOXYS CALCITRANS (DIPTERA: MUSCIDAE)) POPULATIONS IN FIELD CAGES

1975 ◽  
Vol 107 (6) ◽  
pp. 597-600 ◽  
Author(s):  
G. C. LaBrecque ◽  
Donald L. Bailey ◽  
D. W. Meifert ◽  
D. E. Weidhaas
Keyword(s):  
Mortality Rate ◽  
Sampling Technique ◽  
Late Summer ◽  
Stomoxys Calcitrans ◽  
Stable Fly ◽  
Daily Mortality ◽  
Density Estimates ◽  
Stable Flies ◽  
Normal Individuals ◽  
Gamma Irradiated

AbstractIn outdoor cage studies undertaken in the late summer of 1973, a method of estimating the absolute density of a stable fly (Stomoxys calcitrans (L.)) population was developed by correlating the average number of insects feeding or resting on a calf to the total number in the cage. Under the same cage conditions, where emigration, immigration, and to some extent, predation have been excluded, the daily mortality rate of normal stable flies marked with a fluorescent dye ranged from 25.3% to 27.3% dependent upon the sampling technique. Marker dyes have a deleterious effect on survival but surprisingly gamma irradiated flies succumbed at a lower rate than normal individuals.

scholarly journals New records, a completed list and identification key of mites (Acari) associated with the stable fly, Stomoxys calcitrans (L.) (Diptera: Muscidae)

Acarologia ◽  
2018 ◽  
Vol 59 (1) ◽  
pp. 3-11
Author(s):  
Jenő Kontschán ◽  
Sándor Hornok
Keyword(s):  
First Record ◽  
Mite Species ◽  
Identification Key ◽  
Stomoxys Calcitrans ◽  
Stable Fly ◽  
Stable Flies ◽  
Worldwide Distribution ◽  
Blood Sucking ◽  
The Family ◽  
Medical Importance

The stable fly, Stomoxys calcitrans (L.) is a blood-sucking muscid fly species, with a worldwide distribution and high veterinary-medical importance. In this study, four mite species were collected from stable flies in Hungary. One mite species (Trichotrombidium muscarum (Riley, 1878)) from the family Microtrombidiidae was parasitic on the flies, collected in high numbers from their bodies. The other three species were found in small numbers on the flies, which they use only for transportation. The latter included the phoretic female of Pediculaster mesembrinae (Canestrini, 1881) (Acari: Siteroptidae), the phoretic deutonymph of the Halolaelaps sexclavatus (Oudemans, 1902) (Acari: Halolaelapidae) and Macrocheles subbadius (Berlese, 1904) (Acari: Macrochelidae). This is the first record of an association between the stable fly and two mite species (Trichotrombidium muscarum and Halolaelaps sexclavatus). A new, completed list and identification key of known stable fly associated mites are also provided.

The molecular through ecological genetics of abnormal abdomen in Drosophila mercatorum. VI. The non-neutrality of the Y chromosome rDNA polymorphism.

Genetics ◽  
1994 ◽  
Vol 136 (4) ◽  
pp. 1373-1384
Author(s):  
H Hollocher ◽  
A R Templeton
Keyword(s):  
Y Chromosome ◽  
Adult Development ◽  
Sexual Maturation ◽  
Development Time ◽  
Ecological Genetics ◽  
Pleiotropic Effects ◽  
Naturally Occurring ◽  
Drosophila Mercatorum ◽  
Rdna Polymorphism ◽  
Male Expression

Abstract An association between quantitative variation of rDNA on the Y chromosome and male expression of the juvenilized, adult cuticle of the abnormal abdomen syndrome has been found for Drosophila mercatorum. Many pleiotropic effects of this syndrome have been described previously for females, but little was known about possible pleiotropic effects in males. The effects on males open up new avenues for the action of natural selection operating on the system. In females, the syndrome causes an increase in egg-to-adult development time, precocious sexual maturation, increased fecundity and decreased longevity. In addition to the cuticle phenotype, in males abnormal abdomen causes delayed sexual maturation, increased longevity, and decreased mating success, yet no change in egg-to-adult development time. Thus the syndrome has opposing fitness effects in the two sexes, which may help explain the genetic polymorphism observed in this system. Although investigated intensively, associations between naturally occurring Y-linked polymorphism and fitness phenotypes have not been found in Drosophila melanogaster.

Life-History Data of a Mexican Population of Triatoma nitida (Hemiptera: Reduviidae)

2019 ◽  
Vol 57 (1) ◽  
pp. 33-38 ◽  
Author(s):  
J Alejandro Martínez-Ibarra ◽  
Tzintli Meraz-Medina ◽  
Benjamin Nogueda-Torres ◽  
María E Villagrán-Herrera ◽  
Jose A de Diego-Cabrera
Keyword(s):  
Adult Development ◽  
Development Time ◽  
Onset Time ◽  
Vectorial Capacity ◽  
Feeding Time ◽  
Life History Data ◽  
First Instar ◽  
Surveillance Programs ◽  
Blood Meals ◽  
Observation Period

Abstract This study reports the third collection of Triatoma nitida Usinger in Mexico, with a brief description of the collection area and an investigation of parameters related to its vectorial capacity. Whether a triatomine (Hemiptera: Reduviidae) species is a primary or secondary vector is determined by factors that include vectorial capacity, anthropophilic habits, geographic distribution, and capacity to invade and colonize human dwellings. However, when the primary vectors are removed, secondary vectors, such as T. nitida, can become important transmitters of Trypanosoma cruzi Chagas to humans. To estimate the vectorial capacity of T. nitida, the egg-to-adult development time, number of blood meals required to molt to the adult stage, accumulative mortality, onset time for feeding, and feeding and defecation times were examined. Triatoma nitida (n = 100) required a median of 590 d to complete its development time, with a median of 31 blood meals. Almost half (46.5%) of the nymphs died during the cycle. The onset of feeding time exceeded 5 min in all nymphal instars (except on fourth-instar) and adults and feeding times exceeded 22 min in all instars, except on first-instar nymphs. No defecation was observed for 65.6% (n = 383) of the triatomines during a 30-min observation period. Based on the six parameters, the vectorial capacity of T. nitida should be considered as low. However, surveillance programs should include this species because the potential importance of T. nitida as a vector has been demonstrated in other countries.

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