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  1. Article ; Online: Formal Assessment of Agreement and Similarity between an Open-Source and a Reference Industrial Device with an Application to a Low-Cost pH Logger.

    Bataka, Evmorfia P / Maletsika, Persefoni / Nakas, Christos T

    Sensors (Basel, Switzerland)

    2024  Volume 24, Issue 2

    Abstract: Open-source devices are nowadays used in a vast number of research fields like medicine, education, agriculture, and sports, among others. In this work, an open-source, portable, low-cost pH logger, appropriate for in situ measurements, was designed and ... ...

    Abstract Open-source devices are nowadays used in a vast number of research fields like medicine, education, agriculture, and sports, among others. In this work, an open-source, portable, low-cost pH logger, appropriate for in situ measurements, was designed and developed to assist in experiments on agricultural produce manufacturing. Τhe device was calibrated manually using pH buffers for values of 4.01 and 7.01. Then, it was tested by manually measuring the pH from the juice of citrus fruits. A waterproof temperature sensor was added to the device for temperature compensation when measuring the pH. A formal method comparison process between the open-source device and a Hanna HI9024 Waterproof pH Meter was designed to assess their agreement. We derived indices of agreement and graphical assessment tools using mixed-effects models. The advantages and disadvantages of interpreting agreement through the proposed procedure are discussed. In our illustration, the indices reported mediocre agreement and the subsequent similarity analysis revealed a fixed bias of 0.22 pH units. After recalibration, agreement between the devices improved to excellent levels. The process can be followed in general to avoid misleading or over-simplistic results of studies reporting solely correlation coefficients for formal comparison purposes.
    Language English
    Publishing date 2024-01-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s24020490
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Optimization of Brewer's Yeast Quantity in Liquid and Gel Larval Diets for the Mediterranean Fruit Fly.

    Prekas, Paraschos N / Rodovitis, Vasilis G / Bataka, Evmorfia P / Nestel, David / Nakas, Christos T / Papadopoulos, Nikos T

    Insects

    2023  Volume 14, Issue 10

    Abstract: Several artificial larval diets have been developed, evaluated and used for mass-rearing of the Mediterranean fruit fly (medfly), ...

    Abstract Several artificial larval diets have been developed, evaluated and used for mass-rearing of the Mediterranean fruit fly (medfly),
    Language English
    Publishing date 2023-10-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects14100828
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Adaptation of an Invasive Pest to Novel Environments: Life History Traits of Drosophila suzukii in Coastal and Mainland Areas of Greece during Overwintering

    Papanastasiou, Stella A. / Rodovitis, Vasilis G. / Verykouki, Eleni / Bataka, Evmorfia P. / Papadopoulos, Nikos T.

    Biology. 2021 July 29, v. 10, no. 8

    2021  

    Abstract: Drosophila suzukii is a polyphagous pest of small and soft fruit, originating from Asia, which has spread and established in Europe and the USA. Adults exhibit seasonal phenotypes, i.e., summer morphs (SM) and winter morphs (WM) to cope with fluctuating ... ...

    Abstract Drosophila suzukii is a polyphagous pest of small and soft fruit, originating from Asia, which has spread and established in Europe and the USA. Adults exhibit seasonal phenotypes, i.e., summer morphs (SM) and winter morphs (WM) to cope with fluctuating environmental conditions. WM have a darker cuticle and larger wings compared to SM, while WM females experience reproductive dormancy. We studied the life history traits (lifespan, female reproductive status and number of produced offspring) of WM and SM that were exposed to winter field conditions of a coastal and a mainland agricultural area, with mild and cold winter climates, respectively. Mated adults of each phenotype were individually placed in vials bearing nutritional/oviposition substrate, and transferred to the field from November 2019 to May 2020, when the death of the last individual was recorded. Almost all SM females (90%) and no WM female carried mature ovarioles before being transferred to the field. WM exhibited a longer lifespan than SM adjusting for location and sex. Differences in survival between the two phenotypes were more pronounced for adults kept in the mainland area. The majority of SM females produced offspring during overwintering in the mild coastal area, but only a few SM were reproductively active in the cold mainland area. Some WM females produced progeny during overwintering in the mild conditions of the coastal area, but all WM females were in reproductive arrest in the mainland area. Overwintering females in the coastal area had a shorter lifespan and produced more progeny than those kept in the mainland area. High survival rates of WM provide indications of the successful performance of this phenotype in the adverse conditions of the cold climates. Additionally, the continuous reproductive activity of SM females and the onset of progeny production by WM females during overwintering in the coastal area indicate that the insect remains reproductively active throughout the year in areas with mild climatic conditions. Our findings support the successful adaptation of D. suzukii in both areas tested and can be used for the development of area-specific population models, based on the prevailing climatic conditions.
    Keywords Drosophila suzukii ; coasts ; cold ; death ; dormancy ; females ; fruits ; insects ; longevity ; ovarioles ; overwintering ; oviposition ; pests ; phenotype ; progeny ; summer ; Asia ; Greece
    Language English
    Dates of publication 2021-0729
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2661517-4
    ISSN 2079-7737
    ISSN 2079-7737
    DOI 10.3390/biology10080727
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Adaptation of an Invasive Pest to Novel Environments: Life History Traits of

    Papanastasiou, Stella A / Rodovitis, Vasilis G / Verykouki, Eleni / Bataka, Evmorfia P / Papadopoulos, Nikos T

    Biology

    2021  Volume 10, Issue 8

    Abstract: Drosophila ... ...

    Abstract Drosophila suzukii
    Language English
    Publishing date 2021-07-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661517-4
    ISSN 2079-7737
    ISSN 2079-7737
    DOI 10.3390/biology10080727
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Population Dynamics of Drosophila suzukii in Coastal and Mainland Sweet Cherry Orchards of Greece

    Papanastasiou, Stella A / Rodovitis, Vasilis G / Bataka, Evmorfia P / Verykouki, Eleni / Papadopoulos, Nikos T

    Insects. 2020 Sept. 10, v. 11, no. 9

    2020  

    Abstract: Despite the recent invasion and wide spread of Drosophila suzukii Matsumura (Diptera: Drosophilidae) in Europe, little is known regarding its population trends in coastal areas of the southern Mediterranean countries. Using adult trapping and fruit ... ...

    Abstract Despite the recent invasion and wide spread of Drosophila suzukii Matsumura (Diptera: Drosophilidae) in Europe, little is known regarding its population trends in coastal areas of the southern Mediterranean countries. Using adult trapping and fruit sampling, we studied the population dynamics of D. suzukii in coastal and mainland (semi-highland) cherry orchards of Greece, from 2018 to 2020. Adults were captured in traps baited with apple cider vinegar, placed in conventional and unmanaged sweet-cherry orchards, and in neighbouring wild growing hosts. Sampling of sweet-cherry fruit to assess infestation levels was conducted from early and late-ripening cherry cultivars in both areas. Adults were captured throughout the year in the coastal area with two peaks registered in spring and late-autumn. Captures were nearly zero during the hot summer months. Flight activity exhibited only one peak in autumn at the mainland area, and ceased during winter and spring. Captures in wild hosts were lower during the sweet-cherry ripening period than later in the season. Higher sweet-cherry infestation levels were recorded in the coastal than in the mainland area and in unmanaged than in commercial orchards. Both early and late-ripening cultivars were highly susceptible to D. suzukii infestation in the coastal area. Infestation rates were higher in late-ripening cultivars than in early-ripening ones in the mainland area. We conclude that D. suzukii has well adapted to the Mediterranean climate of Greece, and is able to progressively exploit several crops and wild hosts of mainland and coastal areas.
    Keywords Drosophila suzukii ; Mediterranean climate ; Prunus avium ; adults ; apple cider ; autumn ; bait traps ; cherries ; cider vinegar ; coasts ; crops ; cultivars ; flight ; fruits ; hosts ; insect infestations ; orchards ; population dynamics ; ripening ; spring ; summer ; winter ; Greece ; Mediterranean region
    Language English
    Dates of publication 2020-0910
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ISSN 2075-4450
    DOI 10.3390/insects11090621
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Electronic recording of lifetime locomotory activity patterns of adult medflies.

    Rodovitis, Vasilis G / Papanastasiou, Stella A / Bataka, Evmorfia P / Nakas, Christos T / Koulousis, Nikos A / Carey, James R / Papadopoulos, Nikos T

    PloS one

    2022  Volume 17, Issue 7, Page(s) e0269940

    Abstract: Age-specific and diurnal patterns of locomotory activity, can be considered as biomarkers of aging in model organisms and vary across the lifetime of individuals. Τhe Mediterranean fruit fly (medfly), Ceratitis capitata, is a commonly used model-species ... ...

    Abstract Age-specific and diurnal patterns of locomotory activity, can be considered as biomarkers of aging in model organisms and vary across the lifetime of individuals. Τhe Mediterranean fruit fly (medfly), Ceratitis capitata, is a commonly used model-species in studies regarding demography and aging. In the present study, we introduce a modification of the automated locomotory activity electronic device LAM25system (Locomotory Activity Monitor)-Trikinetics, commonly used in short time studies, to record the daily locomotory activity patterns of adult medflies throughout the life. Additionally, fecundity rates and survival of adult medflies were recorded. Male and female medflies were kept in the system tubes and had access to an agar-based gel diet, which provided water and nutrients. The locomotory activity was recorded at every minute by three monitors in the electronic device. The locomotory activity of females was higher than that of males across the different ages. For both sexes locomotory rates were high during the first 20 days of the adult life and decreased in older ages. The activity of males was high in the morning and late afternoon hours, while that of females was constantly high throughout the photophase. Negligible locomotory activity was recorded for both sexes during the nighttime. Males outlived females. Fecundity of females was higher in younger ages. Our results support the adoption of LAM25system in studies addressing aging of insects using medfly as a model organism.
    MeSH term(s) Aging ; Animals ; Ceratitis capitata ; Diet ; Electronics ; Female ; Fertility ; Male
    Language English
    Publishing date 2022-07-25
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0269940
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Population Dynamics of

    Papanastasiou, Stella A / Rodovitis, Vasilis G / Bataka, Evmorfia P / Verykouki, Eleni / Papadopoulos, Nikos T

    Insects

    2020  Volume 11, Issue 9

    Abstract: Despite the recent invasion and wide spread ... ...

    Abstract Despite the recent invasion and wide spread of
    Language English
    Publishing date 2020-09-10
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects11090621
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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