Analysis on the Dispersal Pattern of Newly IntroducedLatrodectus hasseltii(Araneae: Theridiadae) in Japan by Spider Diagram

2004 ◽  
Vol 41 (3) ◽  
pp. 269-276 ◽  
Author(s):  
Naoko Nihei ◽  
Masahiro Yoshida ◽  
Hiroyuki Kaneta ◽  
Ryota Shimamura ◽  
Mutsuo Kobayashi
Keyword(s):  
Dispersal Pattern ◽  
Spider Diagram

A STUDY OF THE MORPHOLOGY OF PLACENTA IN TERTIARY CARE HOSPITAL OF CENTRAL KARNATAKA, INDIA

2021 ◽  
pp. 51-53
Author(s):  
Saryu Sain ◽  
Tupakula Sharmila ◽  
Uttam Kumar ◽  
Anita Anita
Keyword(s):  
Tap Water ◽  
Tertiary Care ◽  
Adverse Outcomes ◽  
Careful Examination ◽  
Minimum Length ◽  
Care Hospital ◽  
Dispersal Pattern ◽  
Medical College ◽  
Foetal Membranes ◽  
Morphology And Morphometry

Introduction: Placenta is a temporary structure, developed during Pregnancy and discarded at Parturition. Human Placenta is of Discoid and Haemo-Chorial type. It connects the foetus with the mother's womb. It is formed by the contribution of two Individuals - both Mother and Baby. At 1 term four- fth of Placenta is of foetal origin and one- fth is of maternal. Along with Amnion, Chorion, Allantois and Yolk sac, Placenta can also be considered as one of the foetal membranes, which acts as Nutritive and Protective to the developing Embryo. Method: - The present study was done on morphology and morphometry of 150 placentae carried at the Department of Anatomy, Basaveshwara Medical College & Hospital (BMCH), Chitradurga. The placentae were collected with prior ethical clearance and proper consent. Soon after the delivery the placental surface was washed thoroughly under running tap water which were then weighed, tagged and brought to the department of Anatomy, BMCH. The parameters like size, shape and attachment of umbilical cord were noted down. Gross examination was carried out according to the proforma. Result: - The maximum number of placentae belong to the range of 501-600 gms (38.7%). Least placental weight is recorded as 205 gms, showing dispersal pattern. The maximum recorded weight is 835 gms and the average being 491.4 gms. The majority of the placentae are discoid (63.3%). The minimum length recorded is 8.9 cms, maximum as 23.80 cms and the average being 18.3 cms. Conclusion: - Careful examination of Placenta can help in explaining adverse outcomes, their management in subsequent pregnancies and assessment of new born risk.

scholarly journals Dispersal Pattern and Dispersion of Adult and Nymph Stink Bugs (Hemiptera: Pentatomidae) in Wheat and Corn

2013 ◽  
Vol 42 (6) ◽  
pp. 1184-1192 ◽  
Author(s):  
Dominic D. Reisig ◽  
M. Roe ◽  
A. Dhammi
Keyword(s):  
Stink Bugs ◽  
Dispersal Pattern

scholarly journals The effects of connectivity on metapopulation persistence: network symmetry and degree correlations

2015 ◽  
Vol 282 (1806) ◽  
pp. 20150203 ◽  
Author(s):  
Elad Shtilerman ◽  
Lewi Stone
Keyword(s):  
Degree Distribution ◽  
Minor Effect ◽  
Dispersal Pattern ◽  
The Past ◽  
Degree Correlation ◽  
Degree Correlations ◽  
Dispersal Routes ◽  
Metapopulation Persistence ◽  
New Perspective ◽  
A Minor

A spatial metapopulation is a mosaic of interconnected patch populations. The complex routes of colonization between the patches are governed by the metapopulation's dispersal network. Over the past two decades, there has been considerable interest in uncovering the effects of dispersal network topology and its symmetry on metapopulation persistence. While most studies find that the level of symmetry in dispersal pattern enhances persistence, some have reached the conclusion that symmetry has at most a minor effect. In this work, we present a new perspective on the debate. We study properties of the in- and out-degree distribution of patches in the metapopulation which define the number of dispersal routes into and out of a particular patch, respectively. By analysing the spectral radius of the dispersal matrices, we confirm that a higher level of symmetry has only a marginal impact on persistence. We continue to analyse different properties of the in–out degree distribution, namely the ‘in–out degree correlation’ (IODC) and degree heterogeneity, and find their relationship to metapopulation persistence. Our analysis shows that, in contrast to symmetry, the in–out degree distribution and particularly, the IODC are dominant factors controlling persistence.

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