Morphological characteristics for sexing living adults of Chaetoptelius vestitus (Coleoptera, Curculionidae)

2019 ◽  
Vol 69 (2) ◽  
pp. 173-181
Author(s):  
Ibtihel Ghrissi ◽  
Mohamed Braham ◽  
Imen Said ◽  
James R. LaBonte ◽  
Thomas Shahan
Keyword(s):  
Sex Determination ◽  
Bark Beetle ◽  
Morphological Characteristics ◽  
External Morphology ◽  
Specific Character ◽  
Morphological Criteria ◽  
Non Destructive ◽  
Gender Specific ◽  
Pistachio Trees

Abstract The pistachio bark beetle, Chaetoptelius vestitus (Mulsant & Rey, 1861) is a serious pest of pistachio trees. Despite its phytosanitary importance, some aspects of its biology are still unclear. For example, determining the sex of this beetle is usually complicated by the lack of a discrete, externally visible gender-specific character. Here, the morphological characteristics of C. vestitus were studied in order to detect discriminative features for sexing living beetles. The shape of the seventh visible tergite effectively enabled the separation of the sexes. This method can be quickly learned, is non-destructive and permits sex determination of living C. vestitus adults with 100% accuracy and without damaging the insects. Sex determination using external morphology was confirmed by dissection under a stereomicroscope and by rearing experiments. These morphological criteria were further successfully verified on insects collected on seven other sites in Tunisia.

scholarly journals Microplastic Fibers Released by Textile Laundry: A New Analytical Approach for the Determination of Fibers in Effluents

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2088 ◽  
Author(s):  
Haap ◽  
Classen ◽  
Beringer ◽  
Mecheels ◽  
Gutmann
Keyword(s):  
Image Analysis ◽  
Morphological Characteristics ◽  
Microscopic Analysis ◽  
Dynamic Image ◽  
Fiber Analysis ◽  
Pre Treatment ◽  
Dynamic Image Analysis ◽  
Set Up ◽  
Non Destructive

The detection of shedded fibers in effluents from textile washing has attracted much attention due to its reported contribution to microplastic pollution. Commonly used analytical methods for fiber detection in liquids are based on filtration with subsequent microscopic analysis and/or gravimetric weighing. These approaches are time-consuming and prone to errors. In this study, an approach based on dynamic image analysis was applied in order to set up an efficient method to analyze fibers in effluents from washing processes. In an initial validation step, reliable information on the counts of fibers and the morphological characteristics were confirmed. For wastewaters from polyester-cotton blends, the chemical nature of the fiber debris (natural vs. synthetic origin) was determined by combining the dynamic image analysis with a chemical pre-treatment. In this study, dynamic image analysis was revealed as a rapid, non-destructive, precise, and reliable technology for the characterization and quantification of the fiber debris, offering a promising approach for fiber analysis in liquids.

Sex Determination of Yellow Perch by External Morphology

2011 ◽  
Vol 73 (3) ◽  
pp. 285-287 ◽  
Author(s):  
Jeffrey A. Malison ◽  
James A. Held ◽  
Sarah E. Kaatz
Keyword(s):  
Sex Determination ◽  
Yellow Perch ◽  
External Morphology

SEX DETERMINATION OF FETUS PRENATAL FROM MATERNAL PLASMA BY USING DUPLEX PCR TECHNIQUE IN GOAT

2014 ◽  
Vol 13 (1) ◽  
pp. 50-59
Author(s):  
A NisreenYasirJasim ◽  
Tahir A. Fahid ◽  
Talib Ahmed Jaayid
Keyword(s):  
Sex Determination ◽  
Maternal Plasma ◽  
Duplex Pcr

Study of Significance of Pelvic Brim Chord and Pelvic Brim Depth in Sex Determination of Human Hip Bone

2012 ◽  
Vol 3 (1) ◽  
pp. 384-386
Author(s):  
Dr. Sudarshan Gupta ◽  
◽  
Dr. Bhadresh Vaghela ◽  
Dr. Deepak Howale ◽  
Dr. Mehul Tandel
Keyword(s):  
Sex Determination ◽  
Pelvic Brim

Stoichiometric Determination of Graphite Intercalation Compounds Using Rutherford Backscatiering Spectrometry

1983 ◽  
Vol 27 ◽  
Author(s):  
L. Salamanca-Riba ◽  
B.S. Elman ◽  
M.S. Dresselhaus ◽  
T. Venkatesan
Keyword(s):  
Experimental Error ◽  
Rutherford Backscattering Spectrometry ◽  
Rutherford Backscattering ◽  
Intercalation Compounds ◽  
Graphite Intercalation Compounds ◽  
X Ray ◽  
Donor And Acceptor ◽  
Graphite Intercalation ◽  
Non Destructive

ABSTRACTRutherford backscattering spectrometry (RBS) is used to characterize the stoichiometry of graphite intercalation compounds (GIC). Specific application is made to several stages of different donor and acceptor compounds and to commensurate and incommensurate intercalants. A deviation from the theoretical stoichiometry is measured for most of the compounds using this non-destructive method. Within experimental error, the RBS results agree with those obtained from analysis of the (00ℓ) x-ray diffractograms and weight uptake measurements on the same samples.

Application of EDS Technique for OSP Film Thickness Measurement

2006 ◽  
Author(s):  
Prong Kongsubto ◽  
Sirarat Kongwudthiti
Keyword(s):  
Thin Film ◽  
Quantitative Analysis ◽  
Joint Strength ◽  
Critical Factor ◽  
Thickness Measurement ◽  
Ic Manufacturing ◽  
And Control ◽  
Film Thickness Measurement ◽  
Non Destructive

Abstract Organic solderability preservatives (OSPs) pad is one of the pad finishing technologies where Cu pad is coated with a thin film of an organic material to protect Cu from oxidation during storage and many processes in IC manufacturing. Thickness of OSP film is a critical factor that we have to consider and control in order to achieve desirable joint strength. Until now, no non-destructive technique has been proposed to measure OSP thickness on substrate. This paper reports about the development of EDS technique for estimating OSP thickness, starting with determination of the EDS parameter followed by establishing the correlation between C/Cu ratio and OSP thickness and, finally, evaluating the accuracy of the EDS technique for OSP thickness measurement. EDS quantitative analysis was proved that it can be utilized for OSP thickness estimation.

AVALIAÇÃO DO CONHECIMENTO TRADICIONAL DOS PESCADORES DA RDSM APLICADO À IDENTIFICAÇÃO DO SEXO DE PIRARUCUS

2010 ◽  
Vol 5 (2) ◽  
pp. 59-66
Author(s):  
Kelven Lopes ◽  
Helder Lima de Queiroz
Keyword(s):  
Sex Determination ◽  
Traditional Knowledge ◽  
Structured Interviews ◽  
Sustainable Fisheries ◽  
Arapaima Gigas ◽  
Males And Females

This study examined the traditional knowledge of fishermen at Mamirauá Reserve about sex determination of pirarucus, Arapaima gigas Schinz 1822. We evaluated the criteria used for by fishermen in the sector Jarauá at Mamirauá Reserve for this determination, during the fisheries season, from October to November 2004. We analyzed responses of a group of about 15 fishermen collected in structured interviews regarding 109 individual pirarucus, 65 males and 44 females. From this sample, only 64 fish have their sex correctly predicted by the fishermen. Although the traditional knowledge of local fishermen is a key component of the sustainable fisheries of this species, this knowledge is not functional in all ranges and aspects, as in sex distinction. We found that the local fishermen evaluated are not able to recognize the sex of pirarucus, although some criteria applied for this purpose are consistent with their biology. The rates of correct forecasts for recognition of males and females were similar to those obtained by chance, even when the criteria applied were consistent, as the criterion “coloration”, which was significantly consistent for identification of males. Yet the group of fishermen interviewed in this study apparently did not apply this criterion correctly.

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