Redescription of Chiropturopoda nidiphila Wiśniewski & Hirschmann (Acari: Uropodina) from a woodpecker’s tree holes, including all development stages and first notes on its ecology

2021 ◽  
Author(s):  
Błoszyk Jerzy ◽  
Hebda Grzegorz ◽  
Adamski Zbigniew ◽  
Zacharyasiewicz Michał
Keyword(s):  
Developmental Stages ◽  
Development Stages ◽  
Tree Holes

All development stages of Chiropturopoda nidiphila Wiśniewski & Hirschmann, 1983 are described, which has previously been known only from the deutonymph stage. The species is closely associated with tree holes excavated by woodpeckers. Chiropturopoda nidiphila was redescribed and the genus diagnosis was completed. The description of the species morphology is based largely on scanning (SEM) electronograms. Diagnoses differentiating all of the known species of the genus Chiropturopoda are provided, including their developmental stages.

Comparative floral development reveals novel aspects of structure and diversity of flowers in Cannabaceae

2020 ◽  
Vol 193 (1) ◽  
pp. 64-83 ◽  
Author(s):  
Flávia M Leme ◽  
Jürg Schönenberger ◽  
Yannick M Staedler ◽  
Simone P Teixeira
Keyword(s):  
Floral Development ◽  
Developmental Stages ◽  
Cannabis Sativa ◽  
Glandular Trichomes ◽  
Flower Morphology ◽  
Ovule Development ◽  
3D Reconstructions ◽  
Development Stages ◽  
Broad Base ◽  
Trema Micrantha

Abstract Species of Cannabaceae are wind pollinated, have inconspicuous and reduced flowers that are pistillate, staminate and apparently perfect on the same individual or on different individuals, with a single-whorled perianth and a pseudomonomerous gynoecium. Our objective is to understand the developmental processes that lead to such a reduced flower morphology and polygamy in Cannabis sativa, Celtis iguanaea and Trema micrantha. Floral buds and flowers were processed for surface, histological examinations and 3D reconstructions of vasculature. The single-whorled perianth is interpreted as a calyx because the organs are robust, have a broad base, an acute apex and quincuncial aestivation and are opposite the stamens. Petals are absent from inception. The dicliny is established at different development stages: stamens or carpels are absent from inception (Cannabis sativa), initiated and aborted during early (Trema micrantha, before sporo/gametogenesis) or late (Celtis iguanaea, after sporo/gametogenesis) development. Furthermore, in all species studied the carpels are congenitally united and the pseudomonomerous nature of the gynoecium is confirmed. Glandular trichomes are distributed on the bracts, sepals, anther connective and receptacle. Special floral features shared by species of Cannabaceae include precocious ovule development and sepals that are each vascularized by one bundle. The reduced flowers of Cannabaceae are the result of the absence from inception and/or abortion of organs and even of a whole whorl at different developmental stages, which were probably selected in response to pressures exerted by the similar pollination mechanism.

scholarly journals GC MS Analysis of the Volatile Constituents of Essential Oil and Aromatic Waters of Artemisia Annua L. at Different Developmental Stages

2008 ◽  
Vol 3 (12) ◽  
pp. 1934578X0800301 ◽  
Author(s):  
Anna Rita Bilia ◽  
Guido Flamini ◽  
Fabrizio Morgenni ◽  
Benedetta Isacchi ◽  
Franco FrancescoVincieri
Keyword(s):  
Essential Oil ◽  
Developmental Stages ◽  
Artemisia Annua ◽  
Volatile Oil ◽  
Flowering Stage ◽  
Development Stages ◽  
Qualitative And Quantitative ◽  
Artemisia Annua L ◽  
Germacrene D ◽  
Long Time

Artemisia annua L. (Asteraceae) still represents the only source of artemisinin, considered as one of the most important drugs for the treatment of malaria and which, more recently, has been shown to be effective against numerous types of tumors. The foliage and inflorescence of A. annua also yield an essential oil upon hydrodistillation. This oil has been evaluated at different development stages (pre-flowering and flowering) by GC/MS. The volatile oil from plants at full blooming showed numerous constituents, with germacrene D (21.2%), camphor (17.6%), β-farnesene (10.2%), β-caryophyllene (9%), and bicyclogermacrene (4.2%) among the main ones. Aromatic waters, after extraction with n-hexane, showed the presence, among others, of camphor (27.7%), 1,8-cineole (14%), artemisia ketone (10.1%), α-terpineol (6.1%), trans-pinocarveol (5.4%), and artemisia alcohol (2%). From plants at the pre-flowering stage, aromatic waters were obtained with camphor (30.7%), 1,8-cineole (12.8%), artemisia alcohol (11.4%), artemisia ketone (9.5%), alpha-terpineol (5.8%), and trans-pinocarveol (3.0%) as the main constituents. The qualitative and quantitative profiles of the two aromatic waters were similar. These results permitted the conclusion to be made that A. annua could be harvested a long time before the onset of flowering to obtain higher yields of artemisinin or could be allowed to attain maturity to obtain valuable yields of volatiles.

scholarly journals Composition at Different Development Stages of the Essential Oil of Four Achillea Species Grown in Iran

2010 ◽  
Vol 5 (2) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Majid Azizi ◽  
Remigius Chizzola ◽  
Askar Ghani ◽  
Fatemeh Oroojalian
Keyword(s):  
Essential Oil ◽  
Volatile Compounds ◽  
Developmental Stages ◽  
Small Field ◽  
Late Flowering ◽  
Main Compound ◽  
Development Stages ◽  
Full Flowering ◽  
Field Plots

Four Achillea species, A. millefolium, A. nobilis, A. eriophora and A. biebersteinii, were grown in small field plots in Iran and harvested at four developmental stages: vegetative, at the appearance of the first flower heads, at full flowering, and at late flowering. The composition of the main volatile compounds in dichloromethane extracts and the essential oil obtained by microdistillation was established by GC/MS and GC. 1,8-Cineole (27-41%) was the main compound in the oils from A. millefolium and A. biebersteinii. These two species reached the highest amount of volatile compounds at the full blooming stage. α-Thujone was the main compound in A. nobilis oil (25-64%). Fully blooming plants of this species also had a high proportion of artemisia ketone (up to 40%) in the oil. The main oil compounds of A. eriophora were camphor (about 35%) and 1,8-cineol (about 30%). This species produces only a small number of flower heads and the composition of the essential oil did not change during development.

scholarly journals Comprehensive Analysis of Jumonji Domain C Family from Citrus grandis and Expression Profilings in the Exocarps of “Huajuhong” (Citrus grandis “Tomentosa”) during Various Development Stages

Horticulturae ◽  
2021 ◽  
Vol 7 (12) ◽  
pp. 592
Author(s):  
Yuzhen Tian ◽  
Ruiyi Fan ◽  
Jiwu Zeng
Keyword(s):  
Developmental Stages ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Cis Acting ◽  
Development Stages ◽  
Domain Structures ◽  
Jmjc Domain ◽  
Responsive Element ◽  
Comprehensive Characterization

Citrus grandis “Tomentosa” (“Huajuhong”) is a famous Traditional Chinese Medicine. In this study, a total of 18 jumonji C (JMJC) domain-containing proteins were identified from C. grandis. The 18 CgJMJCs were unevenly located on six chromosomes of C. grandis. Phylogenetic analysis revealed that they could be classified into five groups, namely KDM3, KDM4, KDM5, JMJC, and JMJD6. The domain structures and motif architectures in the five groups were diversified. Cis-acting elements on the promoters of 18 CgJMJC genes were also investigated, and the abscisic acid-responsive element (ABRE) was distributed on 15 CgJMJC genes. Furthermore, the expression profiles of 18 CgJMJCs members in the exocarps of three varieties of “Huajuhong”, for different developmental stages, were examined. The results were validated by quantitative real-time PCR (qRT-PCR). The present study provides a comprehensive characterization of JMJC domain-containing proteins in C. grandis and their expression patterns in the exocarps of C. grandis “Tomentosa” for three varieties with various development stages.

scholarly journals Distribution and abundance of Euphausia mucronata: development stages and its relationship with temperature and chlorophyll-a concentration

2021 ◽  
Vol 49 (4) ◽  
pp. 640-648
Author(s):  
Pamela González ◽  
Armando Mujica ◽  
María Luisa Nava
Keyword(s):  
Low Temperature ◽  
Water Column ◽  
Chlorophyll A ◽  
Negative Correlation ◽  
Developmental Stages ◽  
Seawater Temperature ◽  
Chlorophyll A Concentration ◽  
Development Stages ◽  
Abundance And Distribution ◽  
The Relationship

Euphausia mucronata abundance and distribution of the developmental stages (calyptopis, furciliae, juveniles, and adults) was analyzed as a function of seawater temperature and chlorophyll-a concentration between Paposo (25°S) and Coquimbo (30°S), Chile. Zooplankton samples were obtained using bongo nets during February of three consecutive years (2014-2016). The Q coefficient was used to explore the relationship between the distribution and abundance of the development stages of E. mucronata with the temperature recorded throughout the water column. The adults were considerably more abundant than the rest of the ontogenetic development stages during the study period. The abundance of adults decreased from February 2014 to 2016, having a negative correlation with temperature. Relative abundance of juveniles and larvae increased positively related to the total euphausiid abundance. The Q coefficient showed a significant association of all development states concerning the low-temperature intervals recorded throughout the seawater column. Q coefficient showed no association with chlorophyll-a concentration through the recorded intervals throughout the water column and neither with the vertical abundance and distribution of E. mucronata specimens.

scholarly journals ASSESSMENT OF TIMING OF BUD DIFFERENTIATION AND DEVELOPMENT STAGES OF FLOWER INFLORESCENCE IN BLACKBERRY (Rubus spp.) CULTIVARS IN NORTHERN TURKEY

2020 ◽  
Vol 19 (5) ◽  
pp. 13-22
Author(s):  
Beril Kocaman ◽  
Hüsnü Demirsoy ◽  
Leyla Demirsoy
Keyword(s):  
Flower Development ◽  
Developmental Stages ◽  
Axillary Bud ◽  
Flower Bud ◽  
Development Stages ◽  
Terminal Flower ◽  
Flower Bud Differentiation ◽  
One Year ◽  
The One ◽  
Lateral Branches

Blackberry (Rubus spp.) production is attracting interest in Turkey’s northern part, but information on timing of bud differentiation and developmental stages of flower inflorescence on next season is limited. The objective of this study was to determine the timing of bud differentiation and development stages of flower inflorescence in 4 biennial fruiting blackberry (Rubus spp.) cultivars (‘Chester’, ‘Dirksen Thornless’, ‘Jumbo’, ‘Bursa 1’) grown in northern Turkey. Axillary bud samples were collected from the middle parts of the one year of lateral branches every 7–15 days from September 2008 to May 2010. Ten development stages were identified from the flower bud differentiation to post-bloom period. The transition from the vegetative to reproductive stage occurred during September to October, with the differentiation of the terminal flower occurring on September 18 in ‘Bursa 1’, October 4–9 in ‘Dirksen Thornless’, October 16–20 in ‘Jumbo’, and October 20–22 in ‘Chester’. In all the examined cultivars, flower development occurred between September and June and lasted for 193–215 days.

scholarly journals Corn Tassel: A New Source of Phytochemicals and Antioxidants Potential for Value-added Products Development in Agro-industry

2018 ◽  
Author(s):  
Prakasit Duangpapeng ◽  
Danupol Ketthaisong ◽  
Khomsorn Lomthaisong ◽  
Kamol Lertrat ◽  
Marvin Paul Scott ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Developmental Stages ◽  
Value Added ◽  
Food Supplement ◽  
Carotenoid Content ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Corn Seed ◽  
Development Stages ◽  
Pollen Shed

Corn tassel is a by-product from hybrid corn seed production and a new source of phytochemicals including compounds with antioxidant activity. Four tassel development stages were evaluated in eight commercial corn varieties. Corn varieties and tassel developmental stages showed significant variations (P0.01) for all parameters. Total phenolic content and antioxidant activity were highest in field corn. KGW1, a purple waxy variety, had the highest anthocyanin content and carotenoid content at tassel development stages at 50% and 75% of pollen shed, whereas the tassel developmental stages at the 1st day of pollen shed and 50% of pollen shed had the highest of anthocyanin yield and carotenoid yield. The most suitable time for tassel harvest should be between the 1st day of pollen shed to 50% of pollen shed. Phytochemicals and antioxidants that are extracted from corn tassel can be used as a functional food supplement, natural pharmaceuticals and cosmetic products.

scholarly journals Fishing Gear in the Sondu-Miriu River: Level of Use, Preference and Selectivity

2014 ◽  
Vol 15 ◽  
pp. 82-86 ◽  
Author(s):  
Brian M. Waswala-Olewe ◽  
James Okot Okuku ◽  
Richard Kennedy Oginga Abila
Keyword(s):  
Developmental Stages ◽  
Fishing Gear ◽  
Sustainable Utilization ◽  
Gill Nets ◽  
Development Stages ◽  
Fish Recruitment ◽  
Level Of Use ◽  
Negative Impacts ◽  
Riverine Fish ◽  
Spawning Biomass

Artisan fishers of Osodo beach of Sondu-Miriu River (Kenya) use both traditional and modern gear to catch riverine fish species. This study, conducted between August 2006 and July 2007, revealed that fishers most predominantly used gear were the seine nets (42%) and the gill nets (28%). Other used gear include long lines (14%); fish baskets (9%) and weirs (7%). The selectivity of this fishing gear varied with the developmental stages of the fish to be caught. Non-selective gear caught both targeted and non-targeted species irrespective of size and development stages. The ranking of selective to non-selective fishing gear was the long lines, fish baskets, weirs, gill nets and beach nets at 2%, 11%, 16%, 24% and 32%, respectively. The non-selective fishing gear may have negative impacts on the riverine fish by reducing spawning biomass and lacustrine fish recruitment. These findings underscore the need for greater appreciation, research, and adaptation of appropriate fishing gear to ensure sustainable utilization of the riverine fisheries in Sondu-Miriu RiverDOI: http://dx.doi.org/10.3126/hn.v15i0.11301HYDRO Nepal JournalJournal of Water Energy and EnvironmentVolume: 15, 2014, JulyPage: 82-86

Reproductive Cycle of the Endangered Sarpunti, Puntius sarana (Hamilton, 1822) in Bangladesh

2007 ◽  
Vol 20 (2) ◽  
Author(s):  
B.K. CHAKRABORTY ◽  
Z.A. MIRZA ◽  
M.I. MIAH ◽  
M.A.B. HABIB ◽  
A. CHAKRABORTY
Keyword(s):  
Histological Analysis ◽  
Developmental Stages ◽  
Maturation Stage ◽  
Gonad Weight ◽  
Spawning Period ◽  
Male And Female ◽  
Development Stages ◽  
Spawning Time ◽  
Puntius Sarana ◽  
Somatic Index

Successive developmental stages of both male and female gonads and estimation of gonado-somatic index (GSI) of Puntius sarana (Hamilton 1822) were investigated over a two year period (October 2002 to September 2004). From the histological analysis, four developmental stages such as spermatogonia, spermatocytes, spermatids and spermatozoa were identified in testes. Three developmental stages of oocytes such as ogenesis (oogonia, early perinucleolus stage and late early perinucleolus stage), vitellogenesis (early vitellogenic oocytes, advanced vitellogenic oocytes and maturation stage) and atretic stage were distinguished in ovaries. Maximum mean gonad weight was recorded in June for both females (8.92±0.01 g) and males (4.48±0.21 g). The testes at early development stages between October and March contained mostly spermatogonia, spermatocytes and spermatids, although a small amount of spermatozoa was also found in late March. The mature testes began to develop in early April and were prominent from May to September. Highest percentage of oogonia in the ovary was recorded in the month of November; while the highest percentages of early perinucleolus stage and late perinucleolus stage were recorded in the month of January. Vitellogenesis (matured oocytes) occupied the most areas of the ovaries which were observed from May to mid September but was prominent in June. All oocytes did not mature at the same time. Only the matured oocytes ovulated in the spawning period while immature oocytes gained maturation under way of vitellogenesis and released at the second spawning time in the months of August and September.

scholarly journals Validation of Reference Genes via qRT-PCR in Multiple Conditions in Brandt’s Voles, Lasiopodomys brandtii

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 897
Author(s):  
Lin Tian ◽  
Yan Chen ◽  
Da-Wei Wang ◽  
Xiao-Hui Liu
Keyword(s):  
Reference Gene ◽  
Reference Genes ◽  
Developmental Stages ◽  
Development Stages ◽  
Qrt Pcr ◽  
Polymerase Chain ◽  
Experimental Treatments ◽  
Different Tissues ◽  
Lasiopodomys Brandtii ◽  
Multiple Conditions

The choice of optimal reference gene is challenging owing to the varied expression of reference genes in different organs, development stages, and experimental treatments. Brandt’s vole (Lasiopodomys brandtii) is an ideal animal to explore the regulatory mechanism of seasonal breeding, and many studies on this vole involve gene expression analysis using quantitative real-time polymerase chain reaction (qRT-PCR). In this study, we used the method of the coefficient of variation and the NormFinder algorithm to evaluate the performance of nine commonly used reference genes Gapdh, Hprt1, β-actin, PPIA, Rpl13a, Tbp, Sdha, Hmbs, and B2M using qRT-PCR in eight different tissues, five developmental stages, and three different photoperiods. We found that all nine genes were not uniformly expressed among different tissues. B2M and Rpl13a were the optimal reference genes for different postnatal development stages in the hypothalamus for males and females, respectively. Under different photoperiods in the hypothalamus, none of the selected genes were suitable as reference genes at 6 weeks postnatal; β-actin and PPIA were the optimal reference genes at 12 weeks postnatal; Hprt1, β-actin, PPIA, Hmbs, and B2M were excellent reference genes at 24 weeks postnatal. The present study provides a useful basis for selecting the appropriate reference gene in Lasiopodomys brandtii.

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