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Visible Light and Its Influence on the embryonic viability of the Cricket Acheta domesticus

Advances in Entomology 2023年第4期11卷 309-324页

作者： Matthew J. Ferenz Daniel Boone Area High School Birdsboro PA USA

During in vitro fertilization, human embryos are incubated without light, and these conditions do not ensure embryo survival. This study explored whether environmental conditions can influence the embryo viability rates of the house cricket, Acheta domesticus. In particular, the experiment tested what colors of visible light provide the best incubation conditions to ensure cricket embryo viability. The concept was to use house cricket embryos to represent human embryos. Cricket embryos were chosen as their eggs have soft outer membrane casings and resemble human embryos during the first few days after fertilization. During the experiment, the adult crickets laid their eggs into one of six soil-filled boxes called substrates. Each substrate was placed into one of six storage containers filled with adult crickets and lit with a different colored visible light (red, yellow, green, blue, white, or no light). After two days of breeding, the egg-filled substrates were removed from the adult crickets and placed in another storage container of the same color light. After incubation under heat-emitting lamps and under one of six light colors, nymphs were counted after hatching to determine embryo viability. After three trials, the red light provided the significantly highest viability rate, with yellow and no light being comparable seconds. The green, blue, and white lights showed significantly lower viability rates than no visible light. My results raise the speculation that exposing fertilized mammal eggs to visible light colors might have the same effects during the in vitro fertilization process.

关键词： embryology embryo embryo viability embryonic viability viability viability Rate Incubation In Vitro fertilization In Vitro Fertilization Visible Light Cricket Acheta domesticus

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Evaluating chromosomal segregation in a family where both spouses carry an autosomal translocation

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Reproductive and Developmental Medicine 2023年第3期7卷 189-192页

作者： Irina L.Puppo Ziravard N.Tonyan Alsu F.Saifitdinova Julia A.Loginova Anna A.Kinunen Alisa N.Panina Julia R.Pastuhova Olga A.Leonteva Olga G.Chiryaeva Olga V.Malysheva Oleg S.Glotov Irina V.Poliakova Andrey V.Tikhonove Tatyana V.Vavilova Irina L.Menshikova Elvira V.Isakova Andrey S.Glotov Natalya K.Bichevaya International Centre for Reproductive Medicine Saint-Petersburg 197350Russia Department of Laboratory Medicine and Genetics Almazov National Medical Research CentreSaint-Petersburg197341Russia Department of Genomic Medicine D.O.Ott's Institute of ObstetricsGynecologyand ReproductologySaint-Petersburg 199034Russia Department of Biology.Herzen State Pedagogical University of Russia Saint-Petersburg 191186Russia DiaCarta Inc.2600 Hilltop DriveRichmondCA 94806 St.Petersburg Centre for Medical Genetics Saint Petersburg194044Russia Department of ExperimentalMedical Virology MolecularGenetics and Biobankingof Pediatric Researchand Clinical Center for Infectious DiseasesSaint-Petersburg 197022Russia Medical institute of Surgut State University Surgut 628403 Russia CerbaLab Ltd. Saint-Petersburg 199106Russia

Autosomal reciprocal translocations represent exchanges of chromatin fragments between non-homologous *** are facilitated by the creation of quadrivalent structures during the first meiotic division,which are characterized by the length of the translocated and centric segments,asymmetry,and the presence of terminal breakpoints,all of which may impact segregation ***,we report a rare case of multiple reciprocal translocations within a single *** includes the evaluation of the translocations in each of the spouses and an analysis of their chromosome segregation patterns as determined by the constellation of universal characteristics in each of their *** obtained results will be of interest to fundamental biology,as they will expand the understanding of the factors affecting chromosome segregation during meiosis.

关键词： embryo viability Genetic counseling Pre-implantation genetic testing Quadrivalent characteristics

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