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Journal articles on the topic 'Ontogenetic development'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 April 2022

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1

Ilyina, Valetina, Tatjana Zenkina, Vadim Sagalaev, Stepan Senator, Anna Mitroshenkova, Olga Kozlovskaya, and Olga Kalmykova. "Structure of cenopopulations Clausia aprica (Stephan) Korn.-Tr. on the border of the area." BIO Web of Conferences 38 (2021): 00043. http://dx.doi.org/10.1051/bioconf/20213800043.

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The aim of this work was to identify and analyze the ontogenetic and spatial structure of steppe plant Clausia aprica (Stephan) Korn.-Tr. (Brassicaceae) cenopopulations at the border of distribution. The study of cenopopulations and their habitat conditions was conducted at 2006–2021 in Samara, Volgograd, and Orenburg Oblasts (Russian Federation). For the first time determined the polyvariance of development of individuals, the duration of ontogenetic stages and complete ontogenesis, peculiarities of spatial location and evaluation of running window methods. A table of prohibitions and resolutions of transitions between ontogenetic states was compiled for C. aprica ontogenesis. It was found that permissions of transitions between ontogenetic states are 37.8%. In natural cenopopulations, mutual transitions of individuals from one ontogenetic state to another has adaptive significance and determines the dynamics of the ontogenetic structure. At intervals of 6-8 years, a slight increase in the number of C. aprica individuals is observed in the populations, which is ensured by the efficiency of seed reproduction. Thus, self-maintenance and self-renewal of species populations is possible in case of low level of anthropogenic impact on vegetation cover of territories.

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2

Ebbesen, Denis K., and Jeppe Olsen. "Ontogenetic Development of Symbolicity." Human Arenas 2, no. 2 (June 11, 2018): 99–128. http://dx.doi.org/10.1007/s42087-018-0024-8.

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3

Greer, J. J. "Ontogenetic development of respiratory control." Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 124 (August 1999): S31. http://dx.doi.org/10.1016/s1095-6433(99)90123-x.

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4

Belyakov, E. A., and A. G. Lapirov. "Ontogenesis of the genets and ramets of some European species of the genus Sparganium subgenus Xanthosparganium." Regulatory Mechanisms in Biosystems 10, no. 1 (February 13, 2019): 136–46. http://dx.doi.org/10.15421/021921.

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Representatives of the Sparganium L. genus belong to an ecological group of short grass helophytes which live in the shoreline area of different water bodies. Despite the fact that most representatives of the genus exhibit notable polymorphism (depending on the level regime of a water body, they can form various ecological forms), characteristic of all of them is presence of only one living form – vegetative mobile clear polycentric long-rhizomatous pseudoannual polycarpic plant with racemose root system. The objective of the article was to study the ontogenesis of genets and ramets on the example of representatives of the Xanthosparganium subgenus (S. emersum Rehm., S. glomeratum (Laest. ex Beurl.) Neum., S. gramineum Georgi and S. natans L.). The research was conducted using the ontogenetic approach. In the study, we analyzed ontogenesis of genet (from generative diaspore) and ontogenesis of ramets (from vegetative diaspores – tuber-like structures and axillary buds of vegetative-generative monocarpic and vegetative rosette shoots). We demonstrated that ontogenesis of genets and ramets (on the basis of tuber-like structures) in laboratory conditions is abrupt. It was found that the model species of Sparganium are characteristic in combining of incomplete and special ontogenesis, which is related to the omission of phases of the post-generative period. Such peculiarity is conditioned by increase in tempi of ontogenetic development. On the basis of specific ontogenesis, a variant of shortened ontogenesis is possible, during which the virginile ontogenetic condition is omitted. This feature could be characterized as dynamic polyvariance of ontogenesis, whereas bud initiation and development of shoots throughout the vegetative season, characterized as heterochrony, has been formed over the process of natural selection. Heterochrony (on the basis of iterative branching without periods of rest) includes a property of formation of vegetative-generative shoots which develop on the basis of sylleptic shoots of subsequent orders of branching. The main course of ontogenesis in natural conditions corresponds to D-type which occurs in order of generations of individuals of vegetative origin.

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Ivanov, Alexandre, Gennady Cherepanov, and Ervins Luskevics. "Ontogenetic development of antiarch dermal ossifications." Geobios 28 (January 1995): 97–102. http://dx.doi.org/10.1016/s0016-6995(95)80094-8.

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6

Buddington, R. K., and J. M. Diamond. "Ontogenetic Development of Intestinal Nutrient Transporters." Annual Review of Physiology 51, no. 1 (March 1989): 601–17. http://dx.doi.org/10.1146/annurev.ph.51.030189.003125.

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7

Kriz, Wilhelm. "Ontogenetic Development of the Filtration Barrier." Nephron Experimental Nephrology 106, no. 2 (2007): e44-e50. http://dx.doi.org/10.1159/000101792.

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8

OADAL, B. "Ontogenetic development of cardiotoxicity for catecholamines." Journal of Molecular and Cellular Cardiology 24 (May 1992): S43. http://dx.doi.org/10.1016/0022-2828(92)90962-y.

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9

Volkova, R. I. "Ontogenetic development of chick cerebellar glomeruli." Neuroscience and Behavioral Physiology 19, no. 5 (September 1989): 422–28. http://dx.doi.org/10.1007/bf01197876.

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10

Talovskaya, Evgeniya, and Elizaveta Komarevtseva. "Development of the dwarf shrub Thymus mongolicus (Lamiaceae) in the conditions of Southern Siberia." BIO Web of Conferences 31 (2021): 00027. http://dx.doi.org/10.1051/bioconf/20213100027.

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The features of the development of Thymus mongolicus in the conditions of Southern Siberia was studied. The similarity of the phases of morphogenesis of individuals in all habitats was established. The duration of individual ontogenetic states, the ontogenesis, the morphogenesis and the reproduction of T. mongolicus are depending on the topography, the substrate and the total projective grass cover. The identified features of development contribute to the adaptation of T. mongolicus, survival and distribution of the species in different conditions of Southern Siberia.

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11

Araújo, Leonardo Augusto Luvison, and Aldo Mellender De Araújo. "Por que o desenvolvimento ontogenético foi tratado como uma “caixa preta” na síntese moderna da evolução?" Principia: an international journal of epistemology 19, no. 2 (August 30, 2015): 263. http://dx.doi.org/10.5007/1808-1711.2015v19n2p263.

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http://dx.doi.org/10.5007/1808-1711.2015v19n2p263The Modern Evolutionary Synthesis relegated the ontogenetic development to a “black box”. In this article, we argue that the absence of ontogenetic development in the Evolutionary Synthesis was due its strong foundation in transmission genetics. We discuss three research strategies of transmission genetics that created an incompatibility with the ontogenetic development: (i) particulate inheritance model; (ii) population as locus for genetics research; (iii) and experimental tools that have been applied to remove “non-heritable fluctuations” from ontogenetic and environmental effects. These practices have contributed to the strength of the genetic inheritance, but also excluded the ontogenetic development from the explanation of heredity and evolution. This distinction has been perpetuated in the Evolutionary Synthesis.

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12

Ryzhova, Lyudmila. "Ontogenesis and dynamics of the ontogenetic structure of the coenopopulations of green amaranth (Amaranthus retroflexus L.)." Сельское хозяйство, no. 3 (March 2021): 22–30. http://dx.doi.org/10.7256/2453-8809.2021.3.37212.

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The object of the study is green amaranth (Amaránthus retrofléxus L.) - a North American species, an invasive species for Russia, an annual weed. The aim of this work is to study the ontogeny and ontogenetic structure of the coenopopulations of the upturned squid. The research was carried out in 2014 in the vicinity of the village of Sizner, Mari-Turek region of the Republic of Mari El, in potato and beet fields. Within each field, 10-15 counting plots of 1 m2 in size were laid, where weekly observations of the development of beetle plants were carried out. To assess the density and ontogenetic structure of populations, we analyzed the R × C contingency tables using Fisher's exact test and the χ2 test (Glotov, 1984). The main conclusions of the conducted research include the following. For the first time, five ontogenetic states of the thrown-back beetle were identified (from seedlings to generative ones). The plant density of the squid in both fields does not differ and averages 6.9 ind./m2. The change in the ontogenetic structure of the coenopopulations of the upturned beetle in the studied fields occurs in different ways. The analysis showed that in the beet field, the plants undergo ontogenesis faster. In mid-July, on the beet field, all the ontogenetic states of the squid are presented, on the potato field, only virginal and generative plants.

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13

de Andrade, Rute Maria Gonçalves, Kátia Cristina De Oliveira, Adriana L. Giusti, Wilmar Dias da Silva, and Denise V. Tambourgi. "Ontogenetic development of Loxosceles intermedia spider venom." Toxicon 37, no. 4 (April 1999): 627–32. http://dx.doi.org/10.1016/s0041-0101(98)00200-1.

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14

Long, James M., and Richard A. Snow. "Ontogenetic Development of Otoliths in Alligator Gar." Transactions of the American Fisheries Society 145, no. 3 (April 19, 2016): 537–44. http://dx.doi.org/10.1080/00028487.2015.1135189.

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15

Weinert, Dietmar. "Ontogenetic Development of the Mammalian Circadian System." Chronobiology International 22, no. 2 (January 2005): 179–205. http://dx.doi.org/10.1081/cbi-200053473.

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16

BLACK, SUE, and LOUISE SCHEUER. "The Ontogenetic Development of the Cervical Rib." International Journal of Osteoarchaeology 7, no. 1 (January 1997): 2–10. http://dx.doi.org/10.1002/(sici)1099-1212(199701)7:1<2::aid-oa299>3.0.co;2-5.

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17

FREEMAN, G. "Ontogenetic Changes: Development as an Evolutionary Process." Science 237, no. 4811 (July 10, 1987): 203–4. http://dx.doi.org/10.1126/science.237.4811.203-a.

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18

Buddington, Randal K. "Nutrition and ontogenetic development of the intestine." Canadian Journal of Physiology and Pharmacology 72, no. 3 (March 1, 1994): 251–59. http://dx.doi.org/10.1139/y94-039.

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Fetal, suckling, and postweaning vertebrates have distinct dietary inputs that impose different functional demands on the developing intestine. Differences between species and life-history stages in intestinal structure and functions are set by genetic determinants that reflect evolutionary diets. Dietary inputs interacting with genetic determinants influence intestinal functions by triggering the production of new enterocyte populations and (or) by reprogramming existing enterocytes. In addition to nutrients, nonnutritive components of amniotic fluid and milk, such as growth factors and hormones, are important mediators of intestinal development and in humans can exert influences at as early as 10 weeks of gestation, when fetuses begin swallowing amniotic fluid. Changes in diet composition during suckling elicit limited and apparently nonspecific responses in intestinal structure and activities of brush-border hydrolases and transporters. The ability to adaptively modulate intestinal brush-border functions develops at weaning, when diet composition begins to vary unpredictably. Hydrolytic and transport capacities of the developing intestine are matched to age-related increases in dietary inputs, are not in great excess, and may be growth limiting. Although not as extensively studied, postnatal diet also influences development of intestinal endocrine and immune functions and has a complex, poorly understood interaction with the developing microflora.Key words: nutrition, intestine, development, diet, vertebrates.

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19

Toscano, Benjamin J., Alexandra S. Figel, and Volker H. W. Rudolf. "Ontogenetic development underlies population response to mortality." Oikos 130, no. 3 (January 27, 2021): 464–75. http://dx.doi.org/10.1111/oik.07796.

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20

Goldstein Ferber, Sari, Aron Weller, Michal Ben-Shachar, Gil Klinger, and Ronny Geva. "Development of the Ontogenetic Self-Regulation Clock." International Journal of Molecular Sciences 23, no. 2 (January 17, 2022): 993. http://dx.doi.org/10.3390/ijms23020993.

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To date, there is no overarching proposition for the ontogenetic-neurobiological basis of self-regulation. This paper suggests that the balanced self-regulatory reaction of the fetus, newborn and infant is based on a complex mechanism starting from early brainstem development and continuing to progressive control of the cortex over the brainstem. It is suggested that this balance occurs through the synchronous reactivity between the sympathetic and parasympathetic systems, both which originate from the brainstem. The paper presents an evidence-based approach in which molecular excitation-inhibition balance, interchanges between excitatory and inhibitory roles of neurotransmitters as well as cardiovascular and white matter development across gestational ages, are shown to create sympathetic-parasympathetic synchrony, including the postnatal development of electroencephalogram waves and vagal tone. These occur in developmental milestones detectable in the same time windows (sensitive periods of development) within a convergent systematic progress. This ontogenetic stepwise process is termed “the self-regulation clock” and suggest that this clock is located in the largest connection between the brainstem and the cortex, the corticospinal tract. This novel evidence-based new theory paves the way towards more accurate hypotheses and complex studies of self-regulation and its biological basis, as well as pointing to time windows for interventions in preterm infants. The paper also describes the developing indirect signaling between the suprachiasmatic nucleus and the corticospinal tract. Finally, the paper proposes novel hypotheses for molecular, structural and functional investigation of the “clock” circuitry, including its associations with other biological clocks. This complex circuitry is suggested to be responsible for the developing self-regulatory functions and their neurobehavioral correlates.

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21

Gnatiuk, А. М. "Features of Dictamnus albus (Rutaceae) in the pregenerative period of ontogeny in M. M. Gryshko National Botanical Garden in Ukraine." Regulatory Mechanisms in Biosystems 10, no. 4 (April 23, 2019): 470–76. http://dx.doi.org/10.15421/021969.

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Investigation of plant ontogenetic peculiarities and establishment of boundaries of ontogenetic states of individuals is a necessary basis for studying their populations. The minimal amount of data on morphology of plants in the pregenerative period of ontogenesis complicates plant identification in natural and cultural populations. Such information is especially important for rare species of plants. Dictamnus albus L. is a perennial rare plant listed in the Red Book of Ukraine.The objective of this research is to analyze the peculiarities of ontomorphogenesis of D. albus, to establish diagnostic signs of age stages and the sequence of their passage for identification of the multivariance of development. The results of the study on D. albus ontomorphogeny in the latent and pregenerative period at the M. M. Gryshko National Botanical Garden оf the National Academy of Sciences of Ukraine are represented in this article. Diagnostic features of age stages: seeds, seedlings, juvenile, immature, virginile are established. The study shows a multivariate development that reveals different sequences of passing ontogenesis states by individuals and, accordingly, the rate of their aging and life expectancy. To describe the variation of the passage by individuals of ontogeny stages, we divided the stages into ontomorphs, which determined the degree of development-degradation of plants. The research showed that every age stage lasts for one growing season or longer. The first bloom in plants does not come earlier than the sixth year of vegetation. Seedlings and juvenile plants vary in leaf number and phyllotaxy. The development of immature plants takes place from the third year of vegetation. Seedlings, juvenile and young immature plants have a tap-root system. In individuals older than 4 years a root system forms which becomes similar to the fibrous root system due to the presence of several thickened roots. In immature and virginile plants, we observed the formation of adventitious roots on the caudex. It has been found that D. albus is characterized by heterophylly and morphological variability of leaves, which is developed during ontogeny and shoot formation. The variety of the architecture of individuals in the early stages of ontogenesis and the multi-variation of their development indicate the variation of the reaction rate.The data may be used for evaluate age (ontogenetic) structure of D. albus populations.

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22

Guseva, Alexandra, and Vera Cheryomushkina. "Polyvariation of the development Scutellaria L. species and the structure of their populations in Siberia." BIO Web of Conferences 16 (2019): 00010. http://dx.doi.org/10.1051/bioconf/20191600010.

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Structure of coenopopulations and polyvariance of the development of species of the genus Scutellaria in Siberia were described. Species of the genus are semi-wood and grassy life forms. The formation of different life forms is confined to specific habitats. In a number of species (S. galericulata, S. grandiflora и S. supina), the life form is changing. Dimensional polyvariance of individuals of S. scordiifolia in different habitats was found. The ontogenetic structure of coenopopulations is diverse; 3 types of spectrum are formed: left-sided, centered, and right-hand. In individuals of S. supina and S. tuvensis, the duration of ontogenesis and the duration of individual ontogenetic conditions are influenced by living conditions. The polyvariance of selfmaintenance was revealed in S. supina, the transition from completely seed self-maintenance to mixed − seed reproduction in combination with vegetative. The spatial structure and density of coenopopulations vary depending on the habitat conditions. The spatial structure of the studied species is also determined by the peculiarities of self-maintenance of coenopopulations. The change in density is also associated with the mobility of the substrate on steep, rocky mountain slopes in vegetatively stationary species and with projective cover in vegetatively mobile ones.

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Faria, Cláudia, Fátima Gil, and Vítor C. Almada. "Ontogenetic development of Parablennius pilicornis (Pisces: Blenniidae) in controlled conditions." Scientia Marina 70, no. 4 (December 30, 2006): 667–71. http://dx.doi.org/10.3989/scimar.2006.70n4667.

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24

Bobokalonov, Kobil A., Vera A. Cheryomushkina, and Mariyo T. Boboev. "Ontomorphogenesis and life form of endemic the Pamiro-Alai Ziziphora Interrupts Juz. (Lamiaceae)." BIO Web of Conferences 24 (2020): 00012. http://dx.doi.org/10.1051/bioconf/20202400012.

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The results are obtained which expand understanding of the semi-woody plant structure. Ontomorphogenesis and life form of Ziziphora interrupta Juz., growing in Tajikistan, were studied. It was established that the ontogenesis of individuals is simple, incomplete, its duration is at least 14-16 years. The multivariance of ontogenesis is revealed, expressed in the rates of development and omissions of ontogenetic states. The description of the formation shoot showed that the individual is characterized by a basisympodial growth and the formation of the life form of a dwarf subshrub.

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25

ROHANOVÁ, MARKÉTA, J. E. McPHERSON, and JITKA VILÍMOVÁ. "Nymphal development of Rhopalus maculatus and Chorosoma schillingii (Hemiptera: Heteroptera: Rhopalidae: Rhopalinae) and development of trichobothrial pattern in Rhopalidae." Zootaxa 4564, no. 2 (March 6, 2019): 367. http://dx.doi.org/10.11646/zootaxa.4564.2.4.

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The nymphal morphology of the family Rhopalidae is well known for several species, most of which are pests. Ontogenetic changes in morphology are described in detail for two members from two tribes of the subfamily Rhopalinae, Rhopalini: Rhopalus (Aeschyntelus) maculatus (Fieber) and Chorosomini: Chorosoma schillingii (Schilling). Keys to the nymphal instars of both species are provided. The special types of nymphal setae and lateral abdominal processes are described in R. maculatus. The ontogenetic development of abdominal trichobothria is described, and the known trichobothrial patterns within the Rhopalidae are discussed.

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26

Paygunova, Yu V. "Tolerance Development in Ontogenesis of a Personality." Izvestiya of Saratov University. New Series. Series: Educational Acmeology. Developmental Psychology 2, no. 1 (2013): 20–26. http://dx.doi.org/10.18500/2304-9790-2013-2-1-20-26.

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The article is about the problem concerning tolerance development of a personality in ontogenesis. It presents the analysis data of psychological conceptions (conception of stage brain building, psychoanalytical conception of culture, socio-analytical theory) that form the basis for modern methodology in researching tolerance development of a personality and give an opportunity to confirm that individual tolerance development repeats the stages of its general social and historical development. The author presents his scheme of ontogenetic stages of personality development and levels of tolerance development the basis for which is the principle of phylogenesis and ontogenesis unity formulated by E. Haeckel. The article views the main stages of personality tolerance formation: latent; empirical; collectivist or conformal; maturating or crisis, egocentric; mature. It describes the main psychological barriers of tolerance formation at the stages of childhood and youth: non-formedness of cognitive sphere; weak ability to reflection; high suggestibility, behavioral conformism; low suggestibility, scepsis, and protest behavior. The author comes to the conclusion that tolerance as the feature of a personality is transformed, evolving in the process of life development, developing from its primitive up to more complex forms.

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27

Krylova, E. "Population Characteristics Erodium tataricum Willd." Bulletin of Science and Practice 6, no. 9 (September 15, 2020): 45–52. http://dx.doi.org/10.33619/2414-2948/58/04.

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Erodium tataricum is a herbaceous perennial multi-headed tap-root (caudex) plant. Hemicryptophyte. Endemic. The ontogenetic structure was studied in the shrub-herb-grass petrophytic steppe. Individuals of the species have four periods and ten ontogenetic states. It was revealed that the population is normal with an incomplete spectrum. In accordance with the classification of A. A. Uranova and O. V. Smirnova the population is definitive. According to the criterion of the absolute maximum, the population is young. The ontogenetic spectrum of the population is left-sided. A specific ontogenetic spectrum corresponds to a characteristic ontogenetic spectrum, i.e. biology of the species. According to the ontogenetic spectrum, the development of the population is characterized as sustainable. The peculiarity of Erodium tataricum is that on all aerial parts of the plant there is abundant pubescence, but in the old generative ontogenetic state, pubescence on the leaves decreases. Reproduction of the species is carried out by seed. In the subsenile ontogenetic state, senile particulation is possible.

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28

Swails, Nancy. "Primate Dental Development: Ontogenetic Processes of Pattern Formation." Dental Anthropology Journal 9, no. 2 (September 8, 2018): 3–7. http://dx.doi.org/10.26575/daj.v9i2.235.

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29

Klimenkova, E. N. "Mentalization and empathy ontogenetic development: empirical studies review." Консультативная психология и психотерапия 24, no. 4 (2016): 126–37. http://dx.doi.org/10.17759/cpp.2016240406.

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The article considers the main fields and onotogenetic development processes of men- talization and empathy. The neural measures and psychological studies results show that there is an active formation process of mentalization and empathy in adolescence. The article highlights the disputable character of the results of modern studies of social cognition in adolescence. The neural measures require further interpretation. The differences in mechanisms of empathy and mentalization are discussed, specifically the order of empathy components (cognitive or emotionally) forming in the onotogenetic development process. The various results of studies showing the proximity of these processes and prove their relative independence (including at the level of neural networks). The article contains the evidence that strong mentalization reduces the risk of emotional maladjustment and aggressive behavior, while its deficits correlate with bullying. We consider the current study of mentalization and empathy family factors. Particular attention is paid to the E.Mains study, which summarizes the research of social cognition ontogenetic development factors in building on the cultural and historical theory development of the of the psyche L.S. Vygotsky. The study was performed by a grant from the Russian Science Foundation (grant № 14- 18-03461) at the Federal Medical Research Centre of Psychiatry and Narcology under the Ministry of Public Health of the Russian Federation.

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30

Debeljak, Irena. "Ontogenetic development of dentition in the cave bear." Geologija 39 (December 30, 1996): 13–77. http://dx.doi.org/10.5474/geologija.1996.001.

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Nowak-Starz, G., M. Markowska, E. Ciesla, H. Król, and B. Zboina. "Environmental conditions of ontogenetic development—An auxological aspect." Journal of Science and Medicine in Sport 16 (December 2013): e80-e81. http://dx.doi.org/10.1016/j.jsams.2013.10.193.

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32

Mareš, Pavel, and Stanislav Trojan. "Ontogenetic development of isonicotinehydrazide-induced seizures in rats." Brain and Development 13, no. 2 (March 1991): 121–25. http://dx.doi.org/10.1016/s0387-7604(12)80119-7.

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Toloza, E. M., and J. Diamond. "Ontogenetic development of nutrient transporters in rat intestine." American Journal of Physiology-Gastrointestinal and Liver Physiology 263, no. 5 (November 1, 1992): G593—G604. http://dx.doi.org/10.1152/ajpgi.1992.263.5.g593.

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We measured intestinal brush-border uptakes of three sugars and three amino acids, plus intestinal morphometric parameters, in rats from the day of birth until adulthood. Rates of body weight gain had pronounced peaks in the suckling phase and again during weaning, separated by a dip at the onset of weaning. These two peaks coincided with peaks or plateaus in intestinal growth and in glucose (Glc) and proline (Pro) uptake capacities, which may provide the basis for high rates of body growth. Pro uptake declined relative to Glc uptake upon weaning, reflecting decreasing protein needs for growth and decreasing protein intake relative to carbohydrate intake. Fructose (Frc) and lysine uptake increased steeply on weaning, whereas galactose uptake declined relative to that of Glc. Rats prevented from normal weaning by being maintained on dry milk were generally similar to normal rats weaned onto chow. Notably, their Frc uptake still rose steeply on weaning despite low dietary Frc levels, suggesting hard-wired regulation of Frc transporter development. Our in vitro uptakes are similar to modern in vivo values in the same strain of rats. Nutrient uptake capacities exceed normal dietary intakes by only a modest safety margin.

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Buddington, R. K., and J. Diamond. "Ontogenetic development of nutrient transporters in cat intestine." American Journal of Physiology-Gastrointestinal and Liver Physiology 263, no. 5 (November 1, 1992): G605—G616. http://dx.doi.org/10.1152/ajpgi.1992.263.5.g605.

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Cats are unusual among mammals in several features of nutritional ontogeny related to their strict carnivory as adults. Hence we measured intestinal brush-border uptakes of three sugars and six amino acids, plus intestinal morphometric parameters, in cats from birth until after weaning. The ratio of amino acid to sugar uptake increases with age, in parallel with the increasing protein/carbohydrate ratio of the natural diet. At weaning, when galactose disappears from the natural diet of cats, the galactose/glucose uptake ratio declines steeply, implying a developmental sequence of multiple aldohexose transporters. Fructose uptake remains low at all ages. Uptakes of arginine (hyperessential to cats) and of lysine are notably high throughout the suckling period. The intense perinatal intestinal hyperplasia observed in many other mammal species is absent in cats. The developmental course of intestinal uptake capacities normalized to metabolic live mass parallels the course of relative body growth rates. The "safety margin" of uptake capacity over intake is greater for essential than nonessential amino acids and is greatest for the hyperessential arginine.

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Toloza, E. M., and J. M. Diamond. "Ontogenetic development of nutrient transporters in bullfrog intestine." American Journal of Physiology-Gastrointestinal and Liver Physiology 258, no. 5 (May 1, 1990): G760—G769. http://dx.doi.org/10.1152/ajpgi.1990.258.5.g760.

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The ratio of intestinal glucose (Glc) to amino acid (AA) transporter activity rises with age in animals of species in which the ratio of dietary carbohydrate to protein also rises. Does this shift function to match transporter activity to current dietary substrate levels or to the high AA requirements of young growing animals? We compared intestinal brush-border uptake of Glc and the AA proline (Pro) in adult and tadpole bullfrogs, since with age this species changes from an herbivore to a carnivore and hence its dietary carbohydrate-to-protein ratio decreases rather than increases. Like typical adult herbivores, tadpoles have a long, highly coiled, narrow-bore, thin-walled intestine with a long, heavy colon, whereas adult bullfrogs have a short, wide-bore, thick-walled intestine typical of carnivores. The ratio of Glc to Pro uptake capacity is essentially the same in adults as in larval tadpoles and is typical of carnivores but unprecedently low for herbivores. This suggests that both functions proposed for developmental shifts of Glc and AA transport in other species are significant and that their effects cancel each other in bullfrogs. Transporter kinetic constants vary predictably with developmental stage. Intestinal daily uptake capacity is comparable to actual daily intake for Glc in adults and for Pro in both tadpoles and adults but is much lower than intake for Glc in tadpoles, probably because most carbohydrate ingested by tadpoles is in the form of high molecular weight polymers that are not utilized.

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Toloza, E. M., and J. M. Diamond. "Ontogenetic development of transporter regulation in bullfrog intestine." American Journal of Physiology-Gastrointestinal and Liver Physiology 258, no. 5 (May 1, 1990): G770—G773. http://dx.doi.org/10.1152/ajpgi.1990.258.5.g770.

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Intestinal nutrient transporter activity is adapted to dietary substrate levels on three time scales: reversibly, within an adult individual, to rapid dietary changes; developmentally, to normal ontogenetic changes in diet; and evolutionarily, among carnivores, omnivores, and herbivores, to a species' natural diet. Does the capacity for rapid reversible adaptation itself vary adaptively during development? Substrate-dependent regulation would make functional sense in herbivorous/omnivorous tadpoles in which dietary substrate levels fluctuate unpredictably, but would serve no purpose in strictly carnivorous adult bullfrogs in which dietary protein is always high and carbohydrate is low. Hence, we fed premetamorphosis bullfrog tadpoles either boiled lettuce (high in carbohydrate, low in protein) or ground beef (high in protein, low in carbohydrate). Gut weight relative to body weight was higher in lettuce-fed tadpoles. Glucose uptake was greater and proline uptake slightly less in lettuce-fed than in beef-fed tadpoles. The resultant ratio of glucose uptake capacity to proline uptake capacity was nearly twice as high in lettuce-fed as in beef-fed tadpoles, corresponding to a much higher ratio of dietary carbohydrate to protein. Adult frogs have been shown to lack such regulation. Therefore, the regulatory capacity seen in tadpoles must become lost during amphibian metamorphosis.

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Naito, Makoto, Fumie Yamamura, and Kiyoshi Takahashi. "Ontogenetic development and differentiation of monocytic cell series." Journal of the Japan Society of the Reticuloendothelial System 28, no. 3 (1988): 257–68. http://dx.doi.org/10.3960/jslrt1961.28.257.

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Ohira, Yoshinobu, Takato Tanaka, Tomoo Yoshinaga, Fuminori Kawano, Takeshi Nomura, Ikuya Nonaka, David L. Allen, Roland R. Roy, and V. Reggie Edgerton. "Ontogenetic, gravity-dependent development of rat soleus muscle." American Journal of Physiology-Cell Physiology 280, no. 4 (April 1, 2001): C1008—C1016. http://dx.doi.org/10.1152/ajpcell.2001.280.4.c1008.

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We tested the hypothesis that rat soleus muscle fiber growth and changes in myosin phenotype during the postnatal, preweaning period would be largely independent of weight bearing. The hindlimbs of one group of pups were unloaded intermittently from postnatal day 4 to day 21: the pups were isolated from the dam for 5 h during unloading and returned for nursing for 1 h. Control pups were either maintained with the dam as normal or put on an alternating feeding schedule as described above. The enlargement of mass (∼3 times), increase in myonuclear number (∼1.6 times) and myonuclear domain (∼2.6 times), and transformation toward a slow fiber phenotype (from 56 to 70% fibers expressing type I myosin heavy chain) observed in controls were inhibited by hindlimb unloading. These properties were normalized to control levels or higher within 1 mo of reambulation beginning immediately after the unloading period. Therefore, chronic unloading essentially stopped the ontogenetic developmental processes of 1) net increase in DNA available for transcription, 2) increase in amount of cytoplasm sustained by that DNA pool, and 3) normal transition of myosin isoforms that occur in some fibers from birth to weaning. It is concluded that normal ontogenetic development of a postural muscle is highly dependent on the gravitational environment even during the early postnatal period, when full weight-bearing activity is not routine.

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Horv�th, S�ndor, K�lm�n Szab�, M�rta Guly�s, and Mikl�s Palkovits. "Ontogenetic development of septal nuclei in the rat." Anatomy and Embryology 177, no. 3 (January 1988): 267–75. http://dx.doi.org/10.1007/bf00321137.

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Zidorn, T. "Classification of the suprapatellar septum considering ontogenetic development." Arthroscopy: The Journal of Arthroscopic & Related Surgery 8, no. 4 (December 1992): 459–64. http://dx.doi.org/10.1016/0749-8063(92)90008-y.

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Weller, Aron, and David I. Mostogsky. "Ontogenetic development and pentylenetetrazol seizure thresholds in rats." Physiology & Behavior 57, no. 4 (April 1995): 629–31. http://dx.doi.org/10.1016/0031-9384(94)00347-5.

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Alm, P., L. M. Lundberg, J. Wharton, and J. M. Polak. "Ontogenetic development of the guinea pig uterine innervation." Histochemistry 90, no. 1 (1988): 19–24. http://dx.doi.org/10.1007/bf00495701.

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Vanderka, Marián, and Tomáš Kampmiller. "Ontogenetic Development of Kinematic Parameters of the Running Stride." Sport Science Review 20, no. 3-4 (August 1, 2011): 5–24. http://dx.doi.org/10.2478/v10237-011-0052-5.

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Ontogenetic Development of Kinematic Parameters of the Running Stride Authors of the research deal with cross-section analysis of ontogenetic characteristics of basic kinematic parameters of the running stride in terms of age and gender from 7 to 18 years of age. There were monitored: average velocity, stride frequency and length, duration of support and flying phase, as well as other derived indicators at 10 m with 15 m flying start. Sample consisted of 1299 male and 1288 female students of elementary and high schools in Bratislava. Authors determined high age dependency of running speed and stride length on age. On the other hand, there was high ontogenetic stability of the indicators (stride frequency, duration of support and flying phase) in the population of 7 to 18 year-old youth. Ontogenetically stable parameters deteriorated partially in prepubescent and at the beginning of the pubescent period in the age 11 - 15. This relates to rapid growth of body height and weight and deterioration of biomechanical and coordination conditions of an organism. Those finding lead the authors to the conclusion, that ontogenetically stable indicators comprise so called dispositional factors in evaluating the rate of talent for running speed.

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Bielova, Olena. "The Paradigm of Speech Ontogenesis as a Methodological Basis of Speech Development." Bulletin of Luhansk Taras Shevchenko National University 1, no. 6 (344) (2021): 207–23. http://dx.doi.org/10.12958/2227-2844-2021-6(344)-1-207-223.

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The research provides a theoretical analysis of the problem of studying the ontogenesis of speech from birth to school age. The purpose of the research is to provide a theoretical justification for the ontogenesis of speech as the methodological basis for speech development. Research methods: analysis of scientific sources. Research objectives: theoretical analysis of scientific theories on the knowledge of the terms «language» and «speech»; substantiation of the term «ontogenesis» and terms such as «speech ontogenesis», «children’s speech ontogenesis», «speech development»; study of psycholinguistic concepts of speech ontogenesis; to reveal the phenomenology of the theory of speech activity in the scientific space; coverage, based on scientific theories, of stages of a child’s ontogenetic development from birth to school age; consider scientific teachings on the relationship of speech to other mental processes. Based on scientific and theoretical research, the meaning of the concepts «language» and «speech» was revealed; understanding of the term «ontogenesis» and terms such as «speech ontogenesis», «child speech ontogenesis», «speech development»; the search can help to acquaint with various scientific positions that shed light on the ontogenesis of speech development: nativism (genetic programming of speech development), activity speech theory (speech acquires a kind of activity, motivation, heuristics and it is socially and objectively conditioned) and cognitive development (the relationship of speech with cognitive mental processes); it was described the phenomenology of the theory of speech activity, which includes the leading elements: motive, purpose, tasks, conditions, actions, operations, means of execution; the stages of ontogenesis of children’s speech are revealed (infant, early, preschool and school-age); the close relationship of speech with mental processes are determined. Studying the conceptual foundations of speech ontogenesis will allow us to further understand the problem of speech readiness for the schooling of children with speech pathology.

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Wermke, Kathleen, and Angela D. Friederici. "Developmental changes of infant cries – the evolution of complex vocalizations." Behavioral and Brain Sciences 27, no. 4 (August 2004): 474–75. http://dx.doi.org/10.1017/s0140525x04390102.

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The signal functions of infant crying cannot be understood properly without due attention to their ontogenetic development. Based on our own research on the development of infant cries, we argue that the controversies in cry literature will not be solved by static models, but that progress will made only when considering ontogenetic changes in interpreting cry data.

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Gorbunov, Aleksandr, Dmitry Nikiforov-Nikishin, and Oleg Gorbunov. "CHANGES IN ONTOGENETIC PARAMETERS IN DAPHNIA MAGNA INFLUENCED BY SOLUTIONS OF BENZENE COMPOUNDS." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2021, no. 2 (June 30, 2021): 125–33. http://dx.doi.org/10.24143/2073-5529-2021-2-125-133.

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The article presents the research results of biological parameters of Daphnia magna development at the critical stages of ontogenesis influenced by the aqueous solutions of ecotoxicants: nitrobenzene and trichlorobenzene. The periods of reproduction and development in Daphnia magna are stated to be decisive, among other parameters (physiological, biochemical). In fact, the entire period of embryogenesis in Daphnia is quite vulnerable, compared to the further stages of development. Under the action of solutions of ecotoxicants taken for the research Daphnias have a decreased fertility and a delayed oogenesis. The next stage of sensitivity is the number of cast carapaces. The least sensitive parameter is the survival rate of adults. Increasing the remote toxic effect in three generations of Daphnias was not detected in the course of research. The Daphnia magna test object showed high sensitivity to nitrobenzene and trichlorobenzene acting as water environment pollutants in all the experiments. For the main ontogenetic parameters in the assessment of water quality it is preferable to take fecundity and violation of development processes at the pre-natal stages of Daphnia magna. According to the survival parameter, the maximum permissible concentration of the studied benzene compounds was 0.01 mg/l, which was determined by the most sensitive parameters and critical stages of ontogenesis

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Hasselman, D. J., J. Whitelaw, and R. G. Bradford. "Ontogenetic development of the endangered Atlantic whitefish (Coregonus huntsmani Scott, 1987) eggs, embryos, larvae, and juveniles." Canadian Journal of Zoology 85, no. 11 (November 2007): 1157–68. http://dx.doi.org/10.1139/z07-073.

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Atlantic whitefish ( Coregonus huntsmani Scott, 1987 ) are an endangered species endemic to Canada and are known only from Nova Scotia. Information concerning their early life-history stages — not previously described — is required to support several recovery actions under the federal Species at Risk Act (SARA). We describe the ontogenetic development of Atlantic whitefish eggs, larvae, and juveniles acquired through captive-mating of wild-caught adults, following criteria established for fishes in general and for other North American coregonine species where possible. We then conduct interspecific comparisons between Atlantic whitefish and the two most closely phylogenetically related species (i.e., lake whitefish ( Coregonus clupeaformis (Mitchill, 1818)) and cisco ( Coregonus artedii Lesueur, 1818)) to (i) identify ontogenetic differences that may facilitate field identification, (ii) determine whether differences at common ontogenetic milestones reinforce the recognition of Atlantic whitefish at the species level, and (iii) comment on whether these differences are consistent with the putative ancestral status of Atlantic whitefish. Interspecific differences were observed at all ontogenetic stages, several of which may serve as field identification criteria. Evidence for heterochrony during embryogenesis, as well as interspecific differences in egg size, myomere counts, and pigmentation patterns, substantiate the recognition of Atlantic whitefish as a valid species and support its putative ancestral status.

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Poli, Letícia Peres, Lívia Godinho Temponi, and Alessandra Ike Coan. "Gynoecial ontogeny of Anthurium: contributions for floral developmental studies in Araceae (Alismatales)." Botany 93, no. 1 (January 2015): 47–56. http://dx.doi.org/10.1139/cjb-2014-0136.

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Studies on floral development have widened the knowledge on the floral morphology of Araceae, particularly in genera delimited through classical taxonomic treatments. In Pothoideae, floral ontogenetic studies are limited to some representatives of Pothoidium Schott and Pothos L. and only one species of Anthurium Schott, with no focus on gynoecium. This background reveals a lack of ontogenetic data on the largest genus in the clade. This paper presents gynoecial ontogeny of species circumscribed in different sections of Anthurium, describes gynoecial developmental patterns, and evaluates the relevance of ontogenetic characteristics in the taxonomy of the sections studied. New data for the Araceae include the recognition of four floral developmental phases, the carpellary nature of the ovarian septum, and the development of the symplicate and synascidiate zones of the gynoecium. The apical septum described in Anthurium scandens (Aubl.) Engl. is first reported for the genus in this study. We also highlight the importance of these ontogenetic data as new information for the Pothoideae within Araceae and to understand the notable phases of floral development in the reproductive biology of Anthurium.

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Schoch, Rainer R. "Heterochrony: the interplay between development and ecology exemplified by a Paleozoic amphibian clade." Paleobiology 36, no. 2 (2010): 318–34. http://dx.doi.org/10.1666/09011.1.

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Recent studies have provided detailed insight into life cycles of early amphibians. These ontogenies were diverse and their evolution involved numerous kinds of change, which can now be addressed by comparison of ontogenetic trajectories. The plesiomorphic trajectory included (1) an early period in which a larval, aquatic predator was established, (2) an intermediate period in which the axial skeleton was strengthened, and (3) a final period during which the jaw joint, braincase, and limbs were ossified, producing an adult capable of terrestrial locomotion if completed. Heterochrony, among other factors, enabled the fine-tuning of the ontogenetic formation of ecologically important features (feeding, respiration, locomotion). Most common was a simple truncation of the trajectory that produced aquatic taxa of various kinds, while changes in the ontogenetic sequence often had a deeper impact on morphology. The most fundamental changes were accompanied by multiple heterochronies, resulting in the condensation or unpacking (stretch-out) of developmental events: metamorphosis evolved by an ever closer packing, whereas a novel larval feeding mechanism was established by a pull-apart of numerous critical events.

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Georgoulas, Nikolaos. "Ontogenetic Phases of Emotional Development in the Childhood Period." Open Journal for Psychological Research 3, no. 2 (December 29, 2019): 69–74. http://dx.doi.org/10.32591/coas.ojpr.0302.04069g.

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