Cordana musae. [Descriptions of Fungi and Bacteria].

Author(s):  
M. B. Ellis

Abstract A description is provided for Cordana musae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Musa sapientum. DISEASE: Leaf blotch or spot of banana (Musa). Small brown spots enlarge to an oval or sometimes a diamond shape, a darker red-brown margin and zonation becomes quite marked with age. A chlorotic halo is conspicuous, especially on the lower surface. Necrotic tissue may occur as strips from edge to midrib, and a marginal necrosis with an uneven, zigzag, chlorotic edge separating healthy from diseased tissue may develop. GEOGRAPHIC DISTRIBUTION: Widespread in the tropics with host (CMI Map 168, ed. 3, 1971). Additional records not mapped are: Cape Verde Islands, Cuba, US Trust Territory. TRANSMISSION: Air-dispersed; a diurnal periodicity with a peak near 0700 hr was found in Jamaica (42: 37) and spore discharge has been described in detail (41: 666).

Author(s):  
A. Sivanesan

Abstract A description is provided for Khuskia oryzae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Plurivorous, especially on monocotyledons and particularly on Oryza sativa, Saccharum officinarum, Zea mays and Musa spp. DISEASE: Causes cob and stalk rot of maize (11: 711; 12: 20; 13: 299, 571; 43, 3205; 44, 2123) and on sorghum as stem and grain infection (43, 727); it is common on banana debris in the western hemisphere and can cause discolouration in rice irain. On maize, symptoms develop towards maturity mostly on the shanks, husks and ears but also on the stems and stalks, where blackish, shallow lesions can occur. Ears may snap off at harvest; the cob becomes shredded and rotten through disintegration of the parenchyma, sparse mycelium and sporulation develop in the furrows between kernels and on the seed itself. GEOGRAPHICAL DISTRIBUTION: Widespread, principally as a member of the saprophytic flora on plant debris in warmer areas. TRANSMISSION: Infection of seed reduces its quality rather than causing the fungus to be really seed-borne. A diurnal periodicity has been reported for Nigrospora sphaerica and K. oryzae, with a peak at 0800-1000 hr, in the tropics (35: 383; 41: 242). Violent spore discharge, a rare phenomenon in the hyphomycetes, has been described for N. sphaerica (31: 56).


Author(s):  

Abstract A new distribution map is provided for Anacridium melanorhodon (Wlk.) (including A. m. arabafrum Dirsh) (Orthopt., Acrididae) (Sahelian Tree Locust). Host Plants: Citrus, acacia, cotton, guava. Information is given on the geographical distribution in ASIA, Iran, Saudi Arabia, Muscat and Oman, AFRICA, Algeria, Cape Verde Islands, Chad, Ethiopia, French, Somaliland, Kenya, Libya, Tripolitania, Mali, Mauritania, Morocco, Niger, Nigeria, Rio de Oro, Senegal, Socotra, Somalia, Sudan, Tanzania, Uganda.


Author(s):  
J. L. Mulder

Abstract A description is provided for Cercospora coffeicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Coffea spp. DISEASE: Brown eye spot of coffee; symptoms occur on leaves and berries. On the former the small chlorotic spots expand, becoming deep brown but lighter in colour on the lower surface; the centre becomes grey white and surrounded by a ring of dark brown tissue, 5-15 mm diam., sometimes with a yellowish halo. This is most distinct on the upper leaf surface; the dark sporulation is seen in the greyish area. Leaves may be shed. On green berries lesions are brown, sunken, irregular or oval with ashy centres, rarely > 5 mm long and sometimes with a purplish surround. Infection may penetrate the berry thus causing the pulp to stick to the bean during fermentation. GEOGRAPHICAL DISTRIBUTION: Throughout the tropics (CMI Map 59, ed. 4, 1973). TRANSMISSION: Conidia probably windborne mostly during the day. The possible role of any other hosts seems unimportant.


Author(s):  
E. Punithalingam

Abstract A description is provided for Didymosphaeria arachidicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Arachis hypogaea. DISEASE: Net blotch (55, 3822), web-blotch (Pettit, Taber & Harrison, 1973) or leaf blotch of peanut (54, 3573). At first lesions are small, diffuse specks or streaks merging in an irregular pattern covering large areas of the leaflet. Initially lesions are superficial and confined to the adaxial surface but later spreading to the lower surface. As the disease progresses the net appearance is lost and a large reddish-brown blotch results. Often several such lesions coalesce covering the entire leaflet. Severe infection leads to defoliation. GEOGRAPHICAL DISTRIBUTION: Africa (Zimbabwe, formerly Rhodesia, South Africa, Mauritius); Australasia (Australia, Queensland); Europe/Asia (USSR, Caucasus, Republic of Georgia); North America (USA); South America (Argentina,? Brazil). TRANSMISSION: Presumably by conidia and ascospores dispersed by rain splash during wet weather or heavy dews. It is also possible that conidia and ascospores could be carried over on crop residues and debris in soil.


Author(s):  
J. L. Mulder

Abstract A description is provided for Cercospora koepkei[Mycovellosiella koepkei]. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Saccharum officinarum. DISEASE: Yellow spot of sugarcane. Irregularly outlined yellow green spots form on the young leaves, up to 12 mrn diam. ; they may coalesce to cover large areas of the leaves. Reddish patches occur as the leaf approaches maturity and infected fields appear a conspicuous rusty yellow. The leaves show a dirty grey growth of conidiophotes and conidia on the lower surface and die prematurely. GEOGRAPHICAL DISTRIBUTION: Widespread in S. and E. Asia, also in Australia and Oceania. In Africa: Ghana, Malagasy Republic, Mauritius, Reunion, S. Africa, Tanzania, Uganda. The identity of the disease reported in Central America, West Indies and S. America (Argentina, Colombia, Brazil, Venezuela) is uncertain (CMI Map 341, ed. 2, 1968). TRANSMISSION: In S. India a diurnal periodicity for the conidia was found, with a max. in the forenoon (51, 3537). No natural hosts apart from Saccharum are known.


Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
C Grosso ◽  
G Teixeira ◽  
I Gomes ◽  
ES Martins ◽  
JG Barroso ◽  
...  

Oryx ◽  
2011 ◽  
Vol 45 (2) ◽  
pp. 217-224 ◽  
Author(s):  
Sabine M. Hille ◽  
Nigel J. Collar

AbstractScavenging raptors have been postulated to be declining at a rate far higher than predatory raptors. To test this hypothesis we reviewed the historical and present status of the seven raptor species—three scavengers (two kites and a vulture), one partial scavenger (a buzzard) and three species (osprey and two falcons) that take live prey—that breed on the Cape Verde islands. Scavenging raptors have experienced steeper declines and more local extinctions than non-scavengers in Cape Verde, with the partial scavenger midway between the two groups. Causes of scavenger decline include incidental poisoning, direct persecution and declines in the availability of carcasses and other detritus. These findings, which highlight the conservation importance of the island of Santo Antão, indicate the priority that needs to be accorded to scavengers, particularly in Europe where many insular populations are reaching unsustainable levels.


Phytotaxa ◽  
2017 ◽  
Vol 317 (4) ◽  
pp. 297 ◽  
Author(s):  
OTÁVIO LUIS MARQUES DA SILVA ◽  
INÊS CORDEIRO

Within Astraea Klotzsch (1841: 194), Astraea lobata (Linnaeus 1753: 1005) Klotzsch (1841: 194) may be considered the most taxonomically complex species due to its wide geographical distribution and the several varieties that have been proposed for this species by Müller Argoviensis (1866, 1874). In his concept, Müller Argoviensis (1866) united under Croton lobatus Linnaeus (1753: 1005) plants with 3–5-partite leaves almost as long as the petioles, subulate stipules, the bracts not well developed and ovaries with varied indumentum. In De Candolles’s Prodromus, Müller Argoviensis (1866) recognized eight varieties, maintaining this concept in the Flora Brasiliensis (Müller Argoviensis 1874) with few modifications. Morphological characters and geographical distribution support the recognition of some of these varieties as species distinct from A. lobata. As part of an undergoing taxonomic revision of Astraea, these distinct taxa must be validly published for further studies on this genus. Therefore, in this note we propose these novelties with commentaries about morphology and geographic distribution, along with photos to illustrate them and lectotypifications when necessary.


Author(s):  

Abstract A new distribution map is provided for Papilio demodocus Esper [Lepidoptera: Papilionidae] Orange dog, citrus butterfly, citrus swallowtail, African lime butterfly. Attacks Citrus and other Rutaceae. Information is given on the geographical distribution in AFRICA, Bioko, Botswana, Burundi, Cameroon, Cape Verde Islands, Chad, Comoro Islands, Congo, Equatorial, Guinea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Madagascar, Malawi, Mauritius, Mozambique, Namibia, Niger, Nigeria, Reunion, Sao, Tome, & Principe, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togoland, Uganda, Zaire, Zimbabwe, ASIA, Oman, Saudi Arabia, South Yemen, Yemen.


Sign in / Sign up

Export Citation Format

Share Document