Morphometric Analysis and Host Range of the Genus Pentalonia Coquerel (Hemiptera: Aphididae) Infesting Banana in Java

Banana aphid, Pentalonia nigronervosa Coquerel (Hemiptera: Aphididae) is known as vector of Banana bunchy top virus (BBTV) that threatening production of banana worldwide. It was reported recently that P. nigronervosa and P. caladii is “cryptic species”. A good and proper identification is necessary to verify the correct species and its status. Research was conducted to identify and to find the host range of banana aphids in Java. Aphid collection was conducted in several locations in West Java, Central Java, and East Java. Eleven morphometric characters were analyzed to assess the morphometric variations among banana aphids. Morphological identification and principle component analysis (PCA) approach were conducted for accurate identification of banana aphids. Two species of aphids were found during the survey in Java, i.e. P. nigronervosa and P. caladii. P. nigronervosa mostly infested bananas (Musa spp.), and a few was found on heliconia (Heliconia sp.) and banana traveler (Ravenala madagascariensis). In contrast, P. caladii generally infested taro (Colocasia esculenta), turmeric (Curcuma longa), costus (Costus sp.), dumbcane (Dieffenbachia sp.), but rarely on bananas.

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Banana Tree Infected with Banana Bunchy Top Virus Attracts Pentalonia nigronervosa Aphids Through Increased Volatile Organic Compounds Emission

Journal of Chemical Ecology ◽

10.1007/s10886-021-01298-3 ◽

2021 ◽

Vol 47 (8-9) ◽

pp. 755-767

Author(s):

Ignace Safari Murhububa ◽

Kévin Tougeron ◽

Claude Bragard ◽

Marie-Laure Fauconnier ◽

Espoir Bisimwa Basengere ◽

...

Keyword(s):

Volatile Organic Compounds ◽

Organic Compounds ◽

Banana Bunchy Top Virus ◽

Banana Tree ◽

Volatile Organic ◽

Pentalonia Nigronervosa

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PRIMATA BESAR DI JAWA: SPESIMEN BARU GIGANTOPITHECUS DARI SEMEDO

Berkala Arkeologi ◽

10.30883/jba.v36i2.241 ◽

2016 ◽

Vol 36 (2) ◽

pp. 141-160 ◽

Cited By ~ 2

Author(s):

Sofwan Noerwidi

Keyword(s):

Morphometric Analysis ◽

Research Problem ◽

Homo Erectus ◽

Taxonomic Position ◽

Tropical Environment ◽

High Latitudes ◽

Comparison Study ◽

Species Identity ◽

Morphometric Characters ◽

Very High

In 2014 there was found two "enigmatic" specimens of mandible, which named as Semedo 3417 and 3418. Both mandibles are morphologically similar but twice bigger than common primate’s jaw. In this research, we use morphology and morphometric analysis to determine the species identity and taxonomic position of those specimens. For comparison study we use some samples from Homo erectus (Java and China), Gigantopithecus (blacki and bilaspurensis), Australopithecines (robust and gracile). Based on morphology and morphometric characters on the mandible and teeth, it is concluded that Semedo specimen tends to be close to Gigantopithecus blacki. The discoveries of Gigantopithecus fossil in Java has implication on some research problem, especially regarding the adaptation pattern of this species which known only found at high latitudes environment. Furthermore this discovery has reinforced the perspective that tropical environment has a very high biodiversity, particularly on primate fossils.

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Problems of compensative fisheries: increasing the adaptive potential of broad whitefish Coregonus nasus (Pallas) in early ontogenesis by weak magnetic fields. 1. Morphometric analysis

Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries) ◽

10.33920/sel-09-2011-03 ◽

2020 ◽

pp. 32-46

Author(s):

Alexander Germanovich Selyukov ◽

Ekaterina Vladimirovna Efremova ◽

Svetlana Aleksandrovna Selyukova ◽

Leonid Alexandrovich Shuman

Keyword(s):

Magnetic Fields ◽

Morphometric Analysis ◽

Juvenile Fish ◽

Morphological Characters ◽

Control Treatment ◽

Physical Factors ◽

Morphometric Characters ◽

Ob River ◽

Biological Potential ◽

Organ Systems

The article presents the results of a production experiment with the embryos of Coregonus nasus, delivered at the Sobsk fish hatchery (settlement Kharp, YaNAO). The plant is taking compensatory measures to restore the number of valuable species of whitefishes in the Ob river basin. The purpose of our study was to increase the biological potential of juvenile broad whitefish for their subsequent release to the Ob river. At the last stage of the embryonic period, the embryos were treated with ultra-weak pulsed magnetic fields for several days. In the postembryonic period, the control and experimental juveniles of broad whitefish were fixed for subsequent morphometric and cytological-histological analysis. After conducting a morphometric analysis, we found that already at the early stages of the postembryonic period, the experimental larvae and fry exceeded the control ones in most parameters. Later, these differences persisted. At the same time, the juveniles of the experimental batch showed, as a rule, less variability of morphological characters. Also, the weight of the experimental fry before release to the Ob significantly exceeded the weight of the control fry. We calculated the degree of correlation of morphometric characters in juvenile broad whitefish of both parties in the process of rearing and found that during the first month the correlation of most parameters in the experimental juveniles was lower than in the control. However, with further development, the degree of relationship between the parameters in juveniles in the experiment increased and reached it in the control. Later, the allometric growth of the experimental juveniles began, which caused a decrease in the connection between some characters. We are discussing the features of the development of experimental juvenile fish; activation of its natural mechanisms of autorehabilitation by using weak physical factors. We explain the reasons for the stable, but insignificant differences between the experimental fish fry over the control treatment with an ultra-weak pulsed magnetic field at the last stages of embryogenesis, when the main organ systems are already formed. We conclude that this approach is advisable, starting with fertilization and early embryogenesis.

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RNA-seq data of banana bunchy top virus (BBTV) viruliferous and non-viruliferous banana aphid (Pentalonia nigronervosa)

Data in Brief ◽

10.1016/j.dib.2019.104860 ◽

2020 ◽

Vol 28 ◽

pp. 104860 ◽

Cited By ~ 1

Author(s):

Siti Subandiyah ◽

Ruth Feti Rahayuniati ◽

Sedyo Hartono ◽

Susamto Somowiyarjo ◽

Afiahayati ◽

...

Keyword(s):

Rna Seq ◽

Banana Bunchy Top Virus ◽

Pentalonia Nigronervosa

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A morphometric analysis of hybrid salamanders (genus Ambystoma) and their progenitors on Kelleys Island in Lake Erie

Canadian Journal of Zoology ◽

10.1139/z89-336 ◽

1989 ◽

Vol 67 (10) ◽

pp. 2376-2383 ◽

Cited By ~ 1

Author(s):

Clifford W. Zeyl ◽

Leslie A. Lowcock

Keyword(s):

Morphometric Analysis ◽

Principal Components ◽

Lake Erie ◽

Meristic Character ◽

Discriminant Functions ◽

Morphometric Characters ◽

Size And Shape ◽

Canonical Variates

Six morphometric characters and one meristic character were measured on 96 adult and 88 juvenile Ambystoma from Kelleys Island, where extensive hybridization involves three species. Canonical variates, discriminant functions, and size-constrained principal components analyses showed that A. laterale (represented only in hybrids on Kelleys Island), A. texanum, A. tigrinum, and A. laterale–texanum–tigrinum are distinguishable from each other and from a complex of hybrids involving A. texanum and A. laterale. Within the latter complex, different ploidies are not distinct morphologically. Introgression may explain isolated atypical individuals. Adults differ from juveniles in both size and shape, demonstrating allometry.

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TAXONOMIC STATUS OF THE ROCKY MOUNTAIN LOCUST: MORPHOMETRIC COMPARISONS OF MELANOPLUS SPRETUS (WALSH) WITH SOLITARY AND MIGRATORY MELANOPLUS SANGUINIPES (F.)

The Canadian Entomologist ◽

10.4039/ent1211103-12 ◽

1989 ◽

Vol 121 (12) ◽

pp. 1103-1109 ◽

Cited By ~ 3

Author(s):

Jeffrey A. Lockwood

Keyword(s):

Morphometric Analysis ◽

Rocky Mountain ◽

Taxonomic Status ◽

Environmental Variation ◽

Body Measurements ◽

Melanoplus Sanguinipes ◽

Morphometric Characters ◽

The Status ◽

Solitary Phase

AbstractMorphometric analysis of 16 body measurements of migratory and solitary Melanoplus sanguinipes (F.) and M. spretus (Walsh) was used to determine if M. spretus was, in fact, the migratory phase of M. sanguinipes. Migratory M. sanguinipes was found to be more similar to its own solitary phase than to M. spretus. Melanoplus spretus resembled migratory M. sanguinipes, but in 14 comparisons M. spretus differed significantly from both solitary and migratory M. sanguinipes. Despite the potential for environmental variation obscuring differences in morphology, the divergent morphometric characters of M. spretus and the phases of M. sanguinipes appear to justify the status of M. spretus as a true species.

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Bursaria (Pittosporaceae): a morphometric analysis and revision

Australian Systematic Botany ◽

10.1071/sb97036 ◽

1999 ◽

Vol 12 (1) ◽

pp. 117 ◽

Cited By ~ 8

Author(s):

L. W. Cayzer ◽

M. D. Crisp ◽

I. R. H. Telford

Keyword(s):

Morphometric Analysis ◽

Morphometric Characters ◽

Eastern Australia ◽

Infraspecific Taxa

Bursariais an endemic Australian genus of mostlyspinescent, scruffy shrubs and trees, found in all but the most arid or alpineareas. Previous classifications include many infraspecific taxa and haveproved unworkable in eastern Australia. This paper presents a revision of thegenus. On the basis of phenetic analyses of morphometric characters thefollowing taxa are now recognised: B. calcicolaL.Cayzer, Crisp & I.Telford, B. incana Lindl.,B. longisepala Domin,B. occidentalis E.M.Benn.,B. reevesii L.Cayzer, Crisp & I.Telford,B. spinosa Cav. subsp. lasiophylla (E.M.Benn.) L.Cayzer, Crisp & I.Telford, B. spinosasubsp. spinosa and B. tenuifoliaF.M.Bail. Two are described as new(B. calcicola, B. reevesii), and one is changed in rank:B. spinosa subsp. lasiophylla(formerly B. lasiophylla E.M.Benn.). None of the otherinfraspecific taxa recognised previously is supported by our analyses.

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Morphological identification of Nematodirus spathiger nematodes (Nematoda, Molineidae) obtained from the small intestine of sheep

Regulatory Mechanisms in Biosystems ◽

10.15421/022119 ◽

2021 ◽

Vol 12 (1) ◽

pp. 121-127

Author(s):

V. Melnychuk ◽

V. Yevstafieva ◽

M. Pishchalenko ◽

O. Reshetylo ◽

A. Antipov

Keyword(s):

Small Intestine ◽

Experimental Studies ◽

The Body ◽

Economic Losses ◽

Domestic Sheep ◽

Morphological Identification ◽

Prevention Measures ◽

Morphometric Characters ◽

Treatment And Prevention ◽

Delayed Growth

Strongyloidiases are caused by nematodes of the suborder Strongylida and are the most widely prevalent group of gastrointestinal helminthiases of sheep in many regions of the world. Among gastrointestinal strongylids, the helminths of the genus Nematodirus are represented by the largest number of species and highest infection rates in sheep. Nematodirosis causes significant economic losses in the sheep industry through decreased sheep productivity, delayed growth and development of young animals, and a reduced resistance to other diseases. Timely and accurate diagnosis of nematodirosis and identification of the pathogen will effectively prevent the disease and help to carry out treatment and prevention measures. Therefore, the aim of the work was to study the definitive morphometric characters of mature males and females of Nematodirus spathiger Railliet, 1896, obtained from the small intestine of domestic sheep. The results of experimental studies showed that nematodes of this species morphologically are characterized by a thin filiform body, a vesicle at the head end and a chitinous tooth in a short oral capsule. The differential morphological features of male nematodes of N. spathiger include specifics of the structure of spicules, their distal end and the shape and location of the rays of the caudal bursa; in females, those are the features of the structure of the vulva and tail end. In identification of male nematodes of N. spathiger, it is proposed to use 40 metric parameters, of which 11 characterize the overall size of the body, esophagus and vesicles, 24 refer to the size of the tail bursa, 5 to the size of the spicules and the enveloping membrane. To help identify the females of N. spathiger, 25 parameters are chosen, of which 14 also characterize the overall size of the body, esophagus and head vesicle, 6 refer to the size of the cuticular formations of the vulva and its location, and 5 to the size of the tail end, the location of the anus and the size of the tail spike.

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PENGARUH WAKTU INFEKSI VIRUS KERDIL PISANG TERHADAP KERENTANAN TIGA KULTIVAR

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ◽

10.23960/j.hptt.1542-49 ◽

2005 ◽

Vol 5 (1) ◽

pp. 42-49

Author(s):

Dewi Widyastuti ◽

Sri Hendrastuti Hidayat

Keyword(s):

Disease Incidence ◽

Virus Transmission ◽

Leaf Size ◽

Growth Stages ◽

Virus Concentration ◽

Adaptation Period ◽

Banana Bunchy Top Virus ◽

Time Of Infection ◽

Pentalonia Nigronervosa

Effects of time of infection of banana bunchy top virus on susceptibility of three banana cultivars. Banana Bunchy Top, caused by Banana Bunchy Top Virus (BBTV), is one of the most important banana diseases in Indonesia. Approach to reduce disease incidence involves prevention of early infection especially on susceptible cultivars. This study was conducted to evaluate the response of three banana cultivars, Ambon Kuning, Tanduk, and Kepok, to different time of infection of BBTV i.e., one week and three week after adaptation period, and one week during adaptation period. Banana plants used in the study were prepared through in vitro propagation (tissue culture) and virus transmission was done using aphid vector, Pentalonia nigronervosa. In addition to observation on symptom expression, inhibition of plant height, and reduction of leaf size, conformation of virus infection was done through indirect ELISA. Virus concentration on different part of the plant, young leaf, stem, and root, tends to decrease over the time due to the ability of BBTV to move from cell to cell before replication takes place. It is evidenced that BBTV was able to infect banana in all growth stages although the younger plant is more susceptible to BBTV. Although concentration of the virus in the tested plant is considered high, symptoms expression of BBTV infection can be differentiated from moderate to very severe. Response of banana plants to infection of BBTV can be grouped into susceptible (Ambon Kuning), moderate tolerant (Tanduk), and tolerant (Kepok).

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AN INTEGRATIVE TAXONOMY OF MOLECULAR AND TRADITIONAL APPROACHES FOR IDENTIFICATION OF A STORAGE MITE, ALEUROGLYPHUS OVATUS (ACARI: ASTIGMATA: ACARIDAE) IN MALAYSIA

JOURNAL OF ADVANCES IN BIOTECHNOLOGY ◽

10.24297/jbt.v6i2.4799 ◽

2016 ◽

Vol 6 (2) ◽

pp. 882-889

Author(s):

Ernieenor Faraliana Che Lah

Keyword(s):

Molecular Identification ◽

Dna Sequences ◽

Correct Diagnosis ◽

Morphological Characters ◽

Integrative Taxonomy ◽

Its2 Region ◽

Morphological Identification ◽

Taxonomic Identification ◽

Internal Transcribed Spacer Region ◽

Accurate Identification

A reliable and rapid taxonomic identification of a mite is the basis for a correct diagnosis of important mite associated allergies as they produce species-specific allergens. A double approach (molecular and morphological) to the taxonomic identification of Aleuroglyphus ovatus was presented. Molecular identification was performed with amplification of the internal transcribed spacer region (ITS2), whilst morphological characters were examined under light microscope. The BLAST results obtained from molecular analysis of A. ovatus was shown to be in concordance with the morphological identification with 97% genetic similarity. Thus, the molecular identification based on the ITS2 region can be applied as a reliable and efficient tool for species identification of Aleuroglyphus and probably any other astigmatid mites. Our findings suggest the need for a broad taxonomic sampling especially from closely related species for an accurate identification of local mites using both DNA sequences and morphology.

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