Identification, geographical distribution and host plants of Bemisia tabaci (Genn.) biotypes (Homoptera: Aleyrodidae) in the State of Paraná, Brazil

This work was carried out in order to identify Bemisia tabaci (Genn.) biotypes present in the state of Paraná and to determine their geographical distribution and host plants. About 50 adults were collected in several host crops, weeds and ornamental plants in North, Northwest, Northeast, West and Central areas of the state, from January to May, 1998 and 1999. The species were identified by means of RAPD-PCR, using the primer Operon H-16. Whitefly populations were detected mainly from February on, in both years, seldom achieving more than one adult per leaf. The insect was found in only 66% of the sampled areas. Bean golden mosaic was almost never observed during the period. Both biotype A and biotype B of B. tabaci were found in the State of Paraná, the last one being more restricted to the north region. Although biotype B was found colonising a wider range of host plants, it has not spread out in all the state and most of the whitefly specimens found are still the biotype A. A banding pattern distinct of those obtained for A and biotype B of B. tabaci was obtained exclusively with the populations collected from cassava, thus indicating the possible presence of a biotype specific for this crop.

Download Full-text

TANAMAN INDIKATOR DAN TEKNIK RAPD-PCR UNTUK PENENTUAN BIOTIPE BEMISIA TABACI GENNADIUS (HEMIPTERA: ALEYRODIDAE)

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ◽

10.23960/j.hptt.181-7 ◽

2011 ◽

Vol 8 (1) ◽

pp. 1-7

Author(s):

Purnama Hidayat ◽

Noor Aidawati ◽

Sri Hendrastuti Hidayat ◽

Dewi Sartiami

Keyword(s):

Genetic Diversity ◽

Bemisia Tabaci ◽

Virus Vector ◽

Indicator Plant ◽

Chilli Pepper ◽

Genetic Types ◽

Rapd Pcr ◽

Major Pest ◽

Biotype B

Indicator Plant and PCR-RAPD for Biotype Determination of Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae).B. tabaci has been known world wide as a major pest and virus vector of horticulture. In Indonesia the presence of B.tabaci was reported since 1980 and its role as virus vector in tomato and chilli pepper has becoming more importantrecently. Genetic diversity of B. tabaci has been well recognized, but very little information available for diversity of B.tabaci in Indonesia. This research was conducted in Bogor, West Java from May 2004 to June 2005. The aim of thisresearch was to initiate basic information regarding genetic diversity of B. tabaci in Indonesia, particularly in Java Island.Whiteflies population collected from different crops, i.e. tomato, broccoli, chill pepper, eggplant, cucumber, soybean, andedamame, was evaluated using silverleaf-induction test, and RAPD-PCR. It was evidenced that only B. tabaci populationfrom broccoli was able to induce silverleaf. Two genetic types of B. tabaci, i.e. biotype B and non B, were identified basedon polymorphism character of DNA. Population from broccoli was belong to biotype B, whereas other populations fromtomato, chill pepper, eggplant, cucumber, soybean, and edamame were belong to biotype non B.

Download Full-text

Post-release evaluation of Eretmocerus hayati Zolnerowich and Rose in Australia

Bulletin of Entomological Research ◽

10.1017/s0007485308006445 ◽

2008 ◽

Vol 99 (2) ◽

pp. 193-206 ◽

Cited By ~ 32

Author(s):

P.J. De Barro ◽

M.T. Coombs

Keyword(s):

Bemisia Tabaci ◽

Host Plants ◽

World Wide ◽

Order Of Magnitude ◽

Biotype B ◽

Magnitude Increase ◽

B Biotype

AbstractBemisia tabaci biotype B is a significant pest of agriculture world-wide. It was first detected in Australia in 1994. Assessments of the potential of parasitoids already present in Australia to control this pest indicated that two species of Eretmocerus and 11 species of Encarsia were present, but they did not exert sufficient control with a combined average of 5.0±0.3% apparent parasitism of 4th instars. Further, only 25% of samples containing biotype B had parasitised individuals present. The surveys also identified that fewer B biotype were being parasitised compared with the Australian indigenous biotype. Overall, Er. mundus was the most abundant parasitoid prior to the introduction. Previous research indicated that Er. hayati offered the best prospects for Australia and, in October 2004, the first releases were made. Since then, levels of apparent parasitism have averaged 29.3±0.1% of 4th instars with only 24% of collections having no parasitism present. Eretmocerus hayati contributed 85% of the overall apparent parasitism. In addition, host plants of the whitefly with low or no parasitism prior to the release have had an order of magnitude increase in levels of parasitism. This study covers the establishment of the case to introduce Er. hayati and the post-release establishment period November 2004–March 2008.

Download Full-text

New record and geographic distribution map of Enyalius bibronii Boulenger, 1885 (Squamata: Leiosauridae)

Check List ◽

10.15560/9.3.666 ◽

2013 ◽

Vol 9 (3) ◽

pp. 666

Author(s):

Adilson De Oliveira Silva ◽

Geraldo Jorge Barbosa de Moura

Keyword(s):

Geographical Distribution ◽

Geographic Distribution ◽

New Record ◽

First Record ◽

The State ◽

Distribution Map ◽

Sao Francisco River ◽

The North ◽

São Francisco River

Enyalius bibronii Boulenger, 1885 is a Neotropical lizard registered in seven northeastern Brazilian states; in this paper we present the first record of Enyalius bibronii for the state of Alagoas, Brazil, and a distribution map for this species. These records fill the gaps of the geographical distribution of E. bibronii, in the north region of the São Francisco River in Brazil.

Download Full-text

Development of silverleaf assay, protein and nucleic acid-based diagnostic techniques for the quick and reliable detection and monitoring of biotype B of the whitefly, Bemisia tabaci (Gennadius)

Bulletin of Entomological Research ◽

10.1017/s0007485307005251 ◽

2007 ◽

Vol 97 (5) ◽

pp. 503-513 ◽

Cited By ~ 13

Author(s):

K.S. Shankarappa ◽

K.T. Rangaswamy ◽

D.S. Aswatha Narayana ◽

A.R. Rekha ◽

N. Raghavendra ◽

...

Keyword(s):

Bemisia Tabaci ◽

Scar Marker ◽

Cost Effective ◽

Diagnostic Techniques ◽

Detection Methods ◽

Agricultural Pests ◽

Sequence Characterized Amplified Region ◽

The North ◽

Biotype B ◽

B Biotype

AbstractThe aim of this study was to develop and optimize silverleaf bioassay, esterase analysis and PCR-based techniques to distinguish quickly and reliably biotype B of the whitefly, Bemisia tabaci (Gennadius), from Indian indigenous biotypes. Zucchini and squash readily develop silverleaf symptoms upon feeding by the B biotype, but they are not readily available in Indian markets. A local pumpkin variety ‘Big’ was, therefore, used in silverleaf assay, which developed symptoms similar to those on zucchini and squash and can be used reliably to detect B biotype. Analysis of non-specific esterases of B and the indigenous biotypes indicated both quantitative and qualitative differences in esterase patterns. Two high molecular weight bands were unique to B biotype and they occurred in abundance. These esterases were used to develop quick and field-based novel detection methods for differentiating B from the indigenous biotypes. Development of these simple and cost-effective protocols has wider application as they can be potentially used to identify other agricultural pests. Mitochondrial cytochrome oxidase I gene sequences and randomly amplified polymorphic DNA (RAPD) polymorphisms, generated using the primer OpB11, were also found useful for detecting B. tabaci biotypes. A B biotype-specific RAPD band of 800 bp was sequenced, which was used to a develop sequence characterized amplified region (SCAR) marker. The SCAR marker involved the development of B biotype-specific primers that amplified 550 bp PCR products only from B biotype genomic DNA. Silverleaf assay, esterases, RAPDs or a SCAR marker were used in combination to analyse whitefly samples collected from selected locations in India, and it was found that any of these techniques can be used singly or in combination to detect B biotype reliably. The B biotype was found in southern parts of India but not in the north in 2004–06.

Download Full-text

Spinocerebellar ataxia type 7 (SCA7): family princeps’ history, genealogy and geographical distribution

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x2006000200010 ◽

2006 ◽

Vol 64 (2a) ◽

pp. 222-227 ◽

Cited By ~ 8

Author(s):

Salomão da Cunha Linhares ◽

Wagner Goes Horta ◽

Wilson Marques Júnior

Keyword(s):

Geographical Distribution ◽

Spinocerebellar Ataxia ◽

The State ◽

Spinocerebellar Ataxia Type ◽

Genetic Origin ◽

Genealogical Tree ◽

Retrospective Survey ◽

Northeast Region ◽

The North ◽

Spinocerebellar Ataxia Type 7

We conducted a 320 year retrospective survey of the history and genealogy of a large Brazilian family with SCA7. The ancestral couple was from the State of Ceará, Brazil, and the genealogical tree was composed of 577 individuals, including 217 males (37.6%), 255 females (44.1%) and 105 individuals of unknown sex (18.1%). Based on collected information, the 118 individuals consistently affected were distributed in generations IV (n=2), V (n=28), VI (n=57), VII (n=25) and VIII (n=6) of the genealogical tree. Sixty affected members are alive, 37 of them (61.6%) live in the Northeast region, 12 (20%) in the Southeast, 9 (15%) in the Center-West and 2 (3.3%) in the North. This genealogical survey was based only on 4 of the 10 children of the ancestral couple since the destiny of the remaining 6 is unknown. We propose that other Brazilian families with SCA7 may have the same genetic origin.

Download Full-text

Ras al Khaimah: further archaeological discoveries

Antiquity ◽

10.1017/s0003598x00150070 ◽

1976 ◽

Vol 50 (200) ◽

pp. 216-222

Author(s):

Beatrice De Cardi

Keyword(s):

United Arab Emirates ◽

The State ◽

Focused Attention ◽

North East ◽

The North ◽

History Of ◽

The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

Download Full-text

A Synopsis of Dicliptera (Acanthaceae) in Brazil, with the Description of Two New Species

Systematic Botany ◽

10.1600/036364420x15862837791186 ◽

2020 ◽

Vol 45 (2) ◽

pp. 340-348

Author(s):

James Lucas da Costa-Lima ◽

Earl Celestino de Oliveira Chagas

Keyword(s):

New Species ◽

South America ◽

The State ◽

Northeastern Brazil ◽

Mato Grosso ◽

The North ◽

New Synonyms ◽

Two New Species ◽

Mato Grosso Do Sul ◽

A New Species

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.

Download Full-text

SPECIES, HOST RANGE, AND IDENTIFICATION KEY OF WHITEFLIES OF BOGOR AND SURROUNDING AREA

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ◽

10.23960/j.hptt.218127-150 ◽

2019 ◽

Vol 18 (2) ◽

pp. 127

Author(s):

Purnama Hidayat ◽

Denny Bintoro ◽

Lia Nurulalia ◽

Muhammad Basri

Keyword(s):

Host Range ◽

Host Plants ◽

Ornamental Plants ◽

Identification Key ◽

Agricultural Crops ◽

Surrounding Area ◽

Aleurodicus Dispersus ◽

Agricultural Plants ◽

Surrounding Areas ◽

Forest Plants

Species identification, host range, and identification key of whiteflies of Bogor and surrounding area. Whitefly (Hemiptera: Aleyrodidae) is a group of insects that are small, white, soft-bodied, and easily found on various agricultural crops. Whitefly is a phytophagous insect; some species are important pests in agricultural crops that can cause direct damage and can become vectors of viral diseases. The last few years the damage caused by whitefly in Indonesia has increased. Unfortunately, information about their species and host plants in Indonesia, including in Bogor, is still limited. Kalshoven, in his book entitled Pest of Crops in Indonesia, published in the 1980s reported that there were 9 species of whitefly in Indonesia. The information on the book should be reconfirmed. Therefore, this study was conducted to determine whitefly species and its host plants in Bogor and its surroundings. Whiteflies is identified based on the ‘puparia’ (the last instar of the nymph) collected from various agricultural plants, ornamental plants, weeds, and forest plants. A total of 35 species of whiteflies were collected from 74 species and 29 families of plants. The collwcted whiteflies consist of four species belong to Subfamily Aleurodicinae and 31 species of Subfamily Aleyrodinae. The most often found whitefly species were Aleurodicus dispersus, A. dugesii, and Bemisia tabaci. A dichotomous identification key of whiteflies was completed based on morphological character of 35 collected species. The number of whitefly species in Bogor and surrounding areas were far exceeded the number of species reported previously by Kalshoven from all regions in Indonesia.

Download Full-text