Invasion and escalation of Aleurodicus rugioperculatus (Hemiptera: Aleyrodidae): An alarming pest in east coast region of India

2021 ◽  
Author(s):  
SATYAPRIYA SINGH ◽  
Deepa Samant ◽  
Manas Ranjan Sahoo ◽  
Kundan Kishore ◽  
Gobinda Chandra Acharya
Keyword(s):  
Crop Production ◽  
Host Plants ◽  
East Coast ◽  
Cocos Nucifera ◽  
Morphological Characteristics ◽  
Natural Ecosystem ◽  
Dissimilarity Index ◽  
Solanum Torvum ◽  
New Host ◽  
Coast Region

Abstract Invasive species causes serious threat to the natural ecosystem. Severe and up surging phenomenon of exotic rugose spiraling whitefly (RSW), Aleurodicus rugioperculatus Martin became a major concern in global crop production. The present study aimed to document and assesses the host range, nature, and intensity of damage caused by this cryptic species. The roving survey was conducted to study the occurrence of RSW in the fruit orchards, vegetable gardens, ornamental crops, and avenues trees plantation in the east-coast region of India. Hierarchical clustering was performed based on its incidence on different host plants and correlated with the dissimilarity index. The RSW was identified based on morphological characteristics and the nature of the damage. RSW infested a total of twenty-seven crops was noticed. Four host plants viz., Cocos nucifera L., Musa sp., Psidium guajava L., and Syzygium cumini L. Skeels showed severe levels of infestation. An important implication from the current study is the occurrence of its incidence on the two new host crops viz., Amaranthus tricolor L. and Solanum torvum that was envisaged firstly to the scientific world. This study provides baseline information about RSW among various stakeholders and helps to develop a sustainable management strategy for timely mitigation of RSW menace.

2. Biologically Important Areas for Cetaceans Within U.S. Waters – East Coast Region

2015 ◽  
Vol 41 (1) ◽  
pp. 17-29 ◽  
Author(s):  
Erin LaBrecque ◽  
Corrie Curtice ◽  
Jolie Harrison ◽  
Sofie M. Van Parijs ◽  
Patrick N. Halpin
Keyword(s):  
East Coast ◽  
Coast Region

New species of leaf-mining Nepticulidae (Lepidoptera) from the Neotropical and Ando-Patagonian regions, with new data on host plants

Zootaxa ◽  
2017 ◽  
Vol 4272 (1) ◽  
pp. 1 ◽  
Author(s):  
JONAS R. STONIS ◽  
ANDRIUS REMEIKIS ◽  
ARŪNAS DIŠKUS ◽  
NICK MEGORAN
Keyword(s):  
New Species ◽  
Host Plants ◽  
Virgin Islands ◽  
Distribution Map ◽  
Leaf Miners ◽  
New Host ◽  
British Virgin Islands ◽  
Leaf Mining ◽  
Plant Data ◽  
First Time

The paper treats fifteen species of leaf-mining pygmy moths (Insecta, Lepidoptera, Nepticulidae) discovered in the Neotropics (British Virgin Islands, Belize, Costa Rica, Venezuela, and Ecuador), and Ando-Patagonian region (Argentina and Chile). Except for two species, all belong to Stigmella Schrank. Twelve species are new, and are named and described in the current paper: Stigmella apicibrunella Diškus & Stonis, sp. nov.; S. decora Diškus & Stonis, sp. nov.; S. unicaudata Remeikis & Stonis, sp. nov.; S. sanmartini Remeikis & Stonis, sp. nov.; S. patula Remeikis & Stonis, sp. nov.; S. torosa Remeikis & Stonis, sp. nov.; S. monstrata Remeikis & Stonis, sp. nov.; S. huahumi Remeikis & Stonis, sp. nov.; S. venezuelica Remeikis & Stonis, sp. nov.; S. virginica Remeikis & Stonis, sp. nov.; Fomoria miranda Diškus & Stonis, sp. nov.; and Hesperolyra robinsoni Stonis, sp. n. Newly discovered variation of male genitalia of the Andean Stigmella rudis Puplesis & Robinson, 2000 is briefly discussed, and the formerly poorly understood Stigmella hylomaga (Meyrick, 1931) is redescribed and documented with photographs for the first time. We also present more photographs and add some addtional information on Stigmella gallicola van Nieukerken & Nishida, a recently described gall-maker from Costa Rica.The paper also provides new host-plant data: some of the described (or redescribed) species are reported for the first time as leaf-miners on plants belonging to Euphorbiaceae (Acalypha padifolia Kunth), Salicaceae (Azara microphylla Hook. f.), Fabaceae (Inga spectabilis (Vahl) Willd. or I. edulis Mart.), Rhamnaceae (Colletia spinosissima J. F. Gmel.), Geraniaceae or Vivianiaceae (Rhynchotheca spinosa Ruiz & Pav.), and Asteraceae (Mutisia decurrens Cav.). All species treated in the paper are illustrated with photographs of the adults and genitalia, a distribution map, and also photographs of the leaf-mines and host plants when available.

scholarly journals New records of Agromyzidae (Diptera) from Portugal, with an updated checklist

2018 ◽  
Vol 67 (1) ◽  
pp. 7-57 ◽  
Author(s):  
Miloš Černý ◽  
Rui Andrade ◽  
Ana Rita Gonçalves ◽  
Michael von Tschirnhaus
Keyword(s):  
Host Plants ◽  
New Records ◽  
Distribution Data ◽  
New Host ◽  
Old World ◽  
Plant Pest ◽  
First Time ◽  
New Distribution

Abstract New records of 110 species of the acalyptrate Diptera family Agromyzidae are given from Portugal, including Madeira, Porto Santo and the Azores. A quarantine plant pest, Nemorimyza maculosa (Malloch, 1913), was detected in the Old World for the first time. Details on Phytobia xylem- miners and a parthenogenetic Phytomyza species are recorded together with new distribution data. For certain species morphological and taxonomic notes and discussions on known or new host plants are added. A complete checklist of Agromyzidae of Portugal is presented.

scholarly journals Ampelomyces strains isolated from diverse powdery mildew hosts in Japan: Their phylogeny and mycoparasitic activity, including timing and quantifying mycoparasitism of Pseudoidium neolycopersici on tomato

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0251444
Author(s):  
Márk Z. Németh ◽  
Yuusaku Mizuno ◽  
Hiroki Kobayashi ◽  
Diána Seress ◽  
Naruki Shishido ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Host Plants ◽  
Morphological Characteristics ◽  
Post Inoculation ◽  
Powdery Mildew Fungus ◽  
Rdna Its ◽  
Pseudoidium Neolycopersici ◽  
Tomato Powdery Mildew ◽  
Internal Transcribed Spacer Rdna ◽  
Complete Collapse

A total of 26 Ampelomyces strains were isolated from mycelia of six different powdery mildew species that naturally infected their host plants in Japan. These were characterized based on morphological characteristics and sequences of ribosomal DNA internal transcribed spacer (rDNA-ITS) regions and actin gene (ACT) fragments. Collected strains represented six different genotypes and were accommodated in three different clades of the genus Ampelomyces. Morphology of the strains agreed with that of other Ampelomyces strains, but none of the examined characters were associated with any groups identified in the genetic analysis. Five powdery mildew species were inoculated with eight selected Ampelomyces strains to study their mycoparasitic activity. In the inoculation experiments, all Ampelomyces strains successfully infected all tested powdery mildew species, and showed no significant differences in their mycoparasitic activity as determined by the number of Ampelomyces pycnidia developed in powdery mildew colonies. The mycoparasitic interaction between the eight selected Ampelomyces strains and the tomato powdery mildew fungus (Pseudoidium neolycopersici strain KTP-03) was studied experimentally in the laboratory using digital microscopic technologies. It was documented that the spores of the mycoparasites germinated on tomato leaves and their hyphae penetrated the hyphae of Ps. neolycopersici. Ampelomyces hyphae continued their growth internally, which initiated the atrophy of the powdery mildew conidiophores 5 days post inoculation (dpi); caused atrophy 6 dpi; and complete collapse of the parasitized conidiphores 7 dpi. Ampelomyces strains produced new intracellular pycnidia in Ps. neolycopersici conidiophores ca. 8–10 dpi, when Ps. neolycopersici hyphae were successfully destroyed by the mycoparasitic strain. Mature pycnidia released spores ca. 10–14 dpi, which became the sources of subsequent infections of the intact powdery mildew hyphae. Mature pycnidia contained each ca. 200 to 1,500 spores depending on the mycohost species and Ampelomyces strain. This is the first detailed analysis of Ampelomyces strains isolated in Japan, and the first timing and quantification of mycoparasitism of Ps. neolycopersici on tomato by phylogenetically diverse Ampelomyces strains using digital microscopic technologies. The developed model system is useful for future biocontrol and ecological studies on Ampelomyces mycoparasites.

scholarly journals PROCESS AND MORPHOLOGY CHARACTERISTICS OF TWO BARRIER BEACHES IN THE MAGDALEN ISLANDS, GULF OF ST. LAWRENCE, CANADA

1976 ◽  
Vol 1 (15) ◽  
pp. 114
Author(s):  
E.H. Owens
Keyword(s):  
Wave Energy ◽  
East Coast ◽  
Energy Levels ◽  
Morphological Characteristics ◽  
Dispersal Patterns ◽  
Barrier Beach ◽  
Sediment Dispersal ◽  
Sediment Redistribution ◽  
Barrier Beaches ◽  
Magdalen Islands

Detailed field investigations of barrier beach morphology and processes at adjacent sites in the Magdalen Islands, Gulf of St. Lawrence, show that the two beaches are in distinctly different morphodynamic environments. The differences are expressed in terms of wave energy levels, sediment dispersal patterns, and nearshore, littoral, and dune geomorphology. The exposed west-facing coast has a steeper offshore gradient, is a zone of sediment bypassing, and has a complex sequence of three nearshore bars. Wave energy levels are lower on the sheltered east coast, and this is a zone of sediment redistribution and deposition with a single, linear nearshore bar. The different morphological characteristics of the two barriers are attributed to the spatial variation in energy levels and to the differences in offshore gradients on the two coasts. Computed wave energy values, derived from data monitored during two study periods (August and November, 1974), indicate that the mean wave energy levels were greater on the west coast as compared to the east coast by factors of 2.25 in summer and 2.95 in winter. This is due primarily to the dominance of winds out of the westerly quadrant throughout the year. 1975

scholarly journals The most significant fungi: Agents of wood decay in oak forests of Serbia

2007 ◽  
pp. 95-107
Author(s):  
Tanja Milijasevic ◽  
Dragan Karadzic
Keyword(s):  
Quercus Robur ◽  
Host Plants ◽  
Morphological Characteristics ◽  
Wood Decay ◽  
Oak Forests ◽  
Lignicolous Fungi ◽  
Fomes Fomentarius ◽  
Turkey Oak ◽  
Common Oak ◽  
Eleven Species

The most widely distributed oak species in Serbia are Q. petrea (sessile oak), Q. cerris (Turkey oak) and Q. frainetto (Hungarian oak) and Quercus robur (common oak), and lignicolous fungi are the major agents of wood decay in natural and coppice oak forests. In this research, 33 species of fungi were identified. Eleven species were described, among which the most significant are: Armillaria mellea, Fomes fomentarius, Hypoxylon deustum Laetiporus sulphureus, Lenzites quercina and Phellinus robustus. This paper presents the morphological characteristics of the most significant identified fungi, their distribution, host plants and significance.

New host plants ofHeliothis armigerain India

1989 ◽  
Vol 35 (2) ◽  
pp. 213-213 ◽  
Author(s):  
G. S. Judal ◽  
V. R. Upadhyay
Keyword(s):  
Host Plants ◽  
New Host

New host plants of Xiphinema basiri and X. indicum

Nematologica ◽  
1967 ◽  
Vol 13 (3) ◽  
pp. 469 ◽  
Author(s):  
B.S. Yadav ◽  
M.K. Varma
Keyword(s):  
Host Plants ◽  
New Host

scholarly journals Nematodes of Cithariniella (Pharyngodonidae) from freshwater fishes in Senegal, with a key to species

2010 ◽  
Vol 47 (2) ◽  
pp. 105-114 ◽  
Author(s):  
B. Koubková ◽  
V. Baruš ◽  
I. Hodová
Keyword(s):  
Species Differences ◽  
Morphological Characteristics ◽  
Host Record ◽  
Nematode Species ◽  
Generic Diagnosis ◽  
Key To Species ◽  
New Host ◽  
Oral Aperture ◽  
New Host Record ◽  
First Time

AbstractThree nematode species of Cithariniella (Pharyngodonidae), C. citharini, C. khalili, and C. gonzalesi, were recorded from the recta of squeaker (Mochokidae: Siluriformes) and citharinid (Citharinidae: Characiformes) fishes from Senegal, West Africa. Morphological characteristics obtained by scanning electron microscopy (form of oral aperture and cephalic papillae, presence of lateral alae, distribution and form of cloacal papillae, simple or paired papillae on tail of males, eggs with numerous long filaments on each pole in females) correspond well to the generic diagnosis and represent species differences. The shape and size of the cephalic papillae and lips were identified as a new determination feature. C. gonzalesi is reported for the first time from Senegal and its host, Paradistichodus dimidiatus, represents a new host record. A tentative simple key for differentiating C. citharini, C. khalili, C. gonzalesi and C. petterae is provided based upon these results.

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