Geographical distribution and host range in Nigeria of the mango mealy bug, Rastrococcus invadens Williams, a serious exotic pest of horticulture and other crops

1992 ◽  
Vol 13 (03) ◽  
pp. 411-416
Author(s):  
Matt. F. Ivbijaro ◽  
N. Udensis ◽  
U. M. Ukwela ◽  
F. V. Anno-Nyako
Author(s):  
Z. Kozakiewicz

Abstract A description is provided for Eurotium rubrum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: A xerotolerant species with the same host range as E. repens (IMI Sheet 1255). DISEASES: Not known to be a pathogen of animals or man, but the species has been isolated from human nails (Smith, 1989). GEOGRAPHICAL DISTRIBUTION: World-wide.


Author(s):  
D. W. Minter

Abstract C. sphaerale is described and illustrated. Information on host range (Manilkara bidentata, insects and artefacts), geographical distribution (Japan; Ontario, Canada; Massachusetts, USA; and Puerto Rico), and transmission is provided.


Author(s):  
D. W. Minter

Abstract C. strumarium is described and illustrated. Information on diseases caused by C. strumarium, host range (field and horticultural crops, trees, dung, man and artefacts), geographical distribution (Algeria, Canary Islands, Democratic Republic of Congo, Egypt, Gambia, Kenya, Namibia, Nigeria, South Africa, Tanzania, USA, India, Nepal, Pakistan, Thailand, Western Australia, Germany, Great Britain, the Netherlands, Cyprus, Israel, Kuwait and Saudi Arabia), and transmission is provided.


Author(s):  
P. F. Cannon

Abstract A description is provided for P. liliacearum. Information on the transmission of the disease caused by the pathogen is included, along with details on geographical distribution (Alberta, Canada; New York and Pennsylvania, USA; Iran; Iraq; Austria; Belgium; Bulgaria; Czech Republic; Denmark; Finland; France; Germany; Hungary; Italy; Norway; Poland; Romania; mainland and Balearic Islands, Spain; Sweden; Switzerland; Ukraine; and England and Scotland, UK) and host range (Ornithogalum species, including O. amphibolum, O. collinum, O. fimbriatum, O. gussonei, O. montanum, O. narbonense, O. nutans, O. orthophyllum subsp. kochii, O. ponticum, O. pyramidale, O. pyrenaicum, O. refractum, O. sigmoideum and O. umbellatum).


Author(s):  
J. F. Bradbury

Abstract A description is provided for Clavibacter XYLI subsp. cynodontis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Cynodon dactylon, where it is limited to the xylem. It also multiplies in the xylem of sugar cane and a Sudan grass-sorghum hybrid when artificially inoculated, but symptoms are not produced (61, 4328). Further host range not yet recorded. DISEASE: Bermuda grass stunting disease. Natural occurrences so far discovered have been in combination with mycoplasma-like organisms thought to cause white leaf and witches' broom symptoms. The presence of the bacterium causes considerably more severe symptoms. The full ecological significance of this bacterium has not yet been evaluated, but a further stress is usually required to produce noticeable symptoms. GEOGRAPHICAL DISTRIBUTION: Taiwan, USA (Florida). TRANSMISSION: So far only mechanical transmission, by artificial inoculation, is known. Cutting blades and possibly grazing animals are likely to spread the infection.


2021 ◽  
pp. 66-72
Author(s):  
Prabashnie Ramouthar

Abstract This chapter focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of Pratylenchus brachyurus, P. neglectus, P. scribneri and P. zeae infesting sugarcane in South Africa. Information on their interactions with other nematodes and pathogens, the efficacy and optimization of some recommended integrated nematode management programmes and future nematode research requirements are also presented.


2021 ◽  
pp. 125-131
Author(s):  
Edward J. Sikora

Abstract This chapter focuses on the economic importance, host range, geographical distribution, symptoms of damage and biology and life cycle of root-knot and reniform nematodes (Meloidogyne spp. and Rotylenchulus reniformis) infesting soyabeans in southern USA. Some information on the efficacy and optimization of some recommended integrated nematode management practices and future outlook and research requirements are also presented.


2021 ◽  
pp. 284-289
Author(s):  
J. Ole Becker

Abstract This chapter discusses the economic importance, geographical distribution, host range, damage symptoms, biology and life cycle, interactions with other nematodes and pathogens, recommended integrated management, and management optimization of Meloidogyne incognita infesting carrots in California, USA. Future research requirements and future developments are also mentioned.


Author(s):  
Thillaiampalam Sivakumar ◽  
Bumduuren Tuvshintulga ◽  
Hemal Kothalawala ◽  
Seekkuge Susil Priyantha Silva ◽  
Dinh Thi Bich Lan ◽  
...  

1978 ◽  
Vol 52 (4) ◽  
pp. 355-384 ◽  
Author(s):  
J. F. A. Sprent

ABSTRACTThe ascaridoid nematodes with more than two uterine branches, which occur in snakes and lizards, are grouped into three genera: (1) Polydelphis (without interlabia, with four uterine branches) containing the type species, P. anoura, occuring in Old World Pythons, with P. brachycheilos as a species dubium. (2) Travassosascaris, a new genus with interlabia and with four uterine branches, with type species T. araujoi (new name for P. quadrangularis (Schneider) of Araujo, 1969) occuring in New World rattlesnakes. (3) Hexametra, (without interlabia, with six uterine branches) containing species in lizards and snakes. In lizards, H. hexametra (type species), H. applanata, H.angusticaecoides and H. rotundicaudata are tentatively differentiated. In snakes, two Hexametra species are tentatively differentiated: (1) H. boddaertii (with three synonyms) in New World pit vipers and colubrids; (2) H. quadricornis (with twenty-two synonyms) in Old World viperids, elapids and colubrids. The morphology, host range, geographical distribution, development and harmful effects of these species are discussed.


Sign in / Sign up

Export Citation Format

Share Document