Sex-Ratios and Related Characteristics in Spinifex sericeus (Poaceae)

1990 ◽  
Vol 38 (2) ◽  
pp. 153 ◽  
Author(s):  
KM Maze ◽  
RDB Whalley
Keyword(s):  
Sex Ratio ◽  
New Caledonia ◽  
New South ◽  
Sand Dunes ◽  
Sex Ratios ◽  
Experimental Period ◽  
North Coast ◽  
Male Bias ◽  
South Wales ◽  
Males And Females

Spinifex sericeus R.Br. is a dioecious, stoloniferous grass which occurs on sand dunes around much of the south-eastern coastline of Australia, New Zealand and New Caledonia. Sex ratios of ramets of S. sericeus and some associated characteristics were studied on the mid-north coast of New South Wales. Generally there was a male bias in the observed ramet sex ratio, although the extent of this bias varied with the beach investigated, the position in the dunes and the time of sampling. Male inflorescences matured and died more rapidly than females, and hence the observed male bias was greatest at the beginning of the flowering period. Male ramets were found to have more sexual tillers per clump than female ramets. The genet sex ratio was estimated from plants grown from seed and separated from each other throughout the experimental period. Males and females were found to be equal in number, although this equality may not be a true reflection of the genet sex ratio in the field.

Seed production and seedling emergence of Giant Parramatta grass on the north coast of New South Wales

1996 ◽  
Vol 36 (3) ◽  
pp. 299 ◽  
Author(s):  
TS Andrews ◽  
RDB Whalley ◽  
CE Jones
Keyword(s):  
Seed Production ◽  
Seed Bank ◽  
New South ◽  
New South Wales ◽  
Seed Banks ◽  
North Coast ◽  
The North ◽  
South Wales ◽  
Seed Fall ◽  
The Impact

Inputs and losses from Giant Parramatta grass [GPG, Sporobolus indicus (L.) R. Br. var. major (Buse) Baaijens] soil seed banks were quantified on the North Coast of New South Wales. Monthly potential seed production and actual seed fall was estimated at Valla during 1991-92. Total potential production was >668 000 seeds/m2 for the season, while seed fall was >146000 seeds/m2. Seed fall >10000 seeds/m2.month was recorded from January until May, with further seed falls recorded in June and July. The impact of seed production on seed banks was assessed by estimating seed banks in the seed production quadrats before and after seed fall. Seed banks in 4 of the 6 sites decreased in year 2, although seed numbers at 1 damp site increased markedly. Defoliation from mid-December until February, April or June prevented seed production, reducing seed banks by 34% over 7 months. Seed banks in undefoliated plots increased by 3300 seeds/m2, although seed fall was estimated at >114 000 seeds/m2. Emergence of GPG seedlings from artificially established and naturally occurring, persistent seed banks was recorded for 3 years from bare and vegetated treatment plots. Sown seeds showed high levels of innate dormancy and only 4% of seeds emerged when sown immediately after collection. Longer storage of seeds after collection resulted in more seedlings emerging. Estimates of persistent seed banks ranged from 1650 to about 21260 seeds/m2. Most seedlings emerged in spring or autumn and this was correlated with rainfall but not with ambient temperatures. Rates of seed bank decline in both bare and vegetated treatment plots was estimated by fitting exponential decay curves to seed bank estimates. Assuming no further seed inputs, it was estimated that it would take about 3 and 5 years, respectively, for seed banks to decline to 150 seeds/m2 in bare and vegetated treatments.

RACE RELATIONS ON THE NORTH COAST OF NEW SOUTH WALES

Oceania ◽  
1957 ◽  
Vol 27 (3) ◽  
pp. 190-209 ◽  
Author(s):  
Malcolm J. C. Calley
Keyword(s):  
Race Relations ◽  
New South ◽  
New South Wales ◽  
North Coast ◽  
The North ◽  
South Wales

Alternaria zinniae. [Distribution map].

1992 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
Central America ◽  
Sierra Leone ◽  
West Indies ◽  
New Caledonia ◽  
New South ◽  
Uttar Pradesh ◽  
Distribution Map ◽  
South Wales ◽  
New Distribution

Abstract A new distribution map is provided for Alternaria zinniae M.B. Ellis. Hosts: Zinnia and other Compositae. Information is given on the geographical distribution in AFRICA, Egypt, Ethiopia, Ghana, Guinea, Kenya, Libya, Malawi, Mauritius, Sierra Leone, South Africa, Sudan, Tanzania, Uganda, Zambia, Zimbabwe, ASIA, Brunei, China, India, Uttar Pradesh, MP, Bihar, Delhi, Karnataka, Maharastra, TN, Indonesia, Borneo, Japan, Korea: Republic, Malaysia, Sabah, Nepal, Pakistan, AUSTRALASIA & OCEANIA, Australia, New South Wales, Queensland, Hawaii, Honolulu, New Caledonia, New Zealand, EUROPE, Austria, Bulgaria, Cyprus, Denmark, France, Germany, Hungary, Italy, Netherlands, Norway, Poland, Portugal, Romania, Switzerland, UK, England, Yugoslavia, NORTH AMERICA, Bermuda, Canada, USA, CENTRAL AMERICA & WEST INDIES, Jamaica, SOUTH AMERICA, Brazil.

Mycosphaerella berkeleyi. [Distribution map].

1978 ◽  
Author(s):  
Keyword(s):  
Sierra Leone ◽  
West Indies ◽  
New Caledonia ◽  
New South ◽  
Solomon Islands ◽  
Peninsular Malaysia ◽  
Rio Grande Do Sul ◽  
Distribution Map ◽  
South Wales ◽  
New Distribution

Abstract A new distribution map is provided for Mycosphaerella berkeleyi Jenkins. Hosts: Groundnut (Arachis hypogaea). Information is given on the geographical distribution in AFRICA, Angola, Cameroon, Chad, Congo, Dahomey, Egypt, Ethiopia, Gambia, Ghana, Guinea, Ivory Coast, Kenya, Libya, Malagasy Republic, Malawi, Mauritius, Morocco, Mozambique, Niger, Nigeria, Rhodesia, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togo, Uganda, Zaire, Zambia, ASIA, Afghanistan, Bangladesh, Brunei, Burma, Cambodia, China, Hong Kong, India (general), Indonesia (Java), Iran, Iraq, Israel, Japan, Korea, Laos, Peninsular Malaysia (Sabah, Sarawak), Nepal, Pakistan, Philippines, Sri Lanka, Taiwan, Thailand, Timor, Turkey, USSR (Republic of Georgia), Vietnam, AUSTRALASIA & OCEANIA, Australia (New South Wales, Qd), British Solomon Islands, Fiji, Guam, Hawaii, New Caledonia, Papua New Guinea, Tahiti, Tonga, West Irian, EUROPE, Greece, Spain, NORTH AMERICA, Bermuda, Mexico, USA, CENTRAL AMERICA & WEST INDIES, Antilles, Barbados, Cuba, Dominican Republic, Guatemala, Haiti, Honduras, Jamaica, Nicaragua, Panama, Puerto Rico, Salvador, St. Vincent, Trinidad & Tobago, SOUTH AMERICA, Argentina (Cordoba), Brazil (Rio Grande do Sul), Colombia, Guyana, Paraguay, Peru, Surinam, Uruguay, Venezuela.

Cochliobolus heterostrophus. [Distribution map].

1981 ◽  
Author(s):  
Keyword(s):  
New Caledonia ◽  
New South ◽  
Solomon Islands ◽  
American Samoa ◽  
Cochliobolus Heterostrophus ◽  
Distribution Map ◽  
Irian Jaya ◽  
South Wales ◽  
Western Samoa ◽  
New Hebrides

Abstract A new distribution map is provided for Cochliobolus heterostrophus (Drechsl.) Drechsl. Hosts: Maize (Zea mays) and other Gramineae. Information is given on the geographical distribution in AFRICA, Dahomey, Egypt, Ghana, Guinea, Ivory Coast, Kenya, Malawi, Mauritius, Niger, Nigeria, Reunion, Senegal, Sierra Leone, South Africa, Sudan, Swaziland, Togo, Zaire, Zambia, Zimbabwe, ASIA, Bangladesh, Brunei, Burma, Cambodia, China (Honan, Manchuria, Nanking, Yunnan), Hong Kong, India (Delhi, Himalayas & S. India, West Bengal), (Bihar, Punjab), (Laccadive Ils), Indonesia (Irian Jaya), (Java), Israel, Japan, Korea, Laos, Malaysia, (W) (Sabah), (Sarawak), Nepal, Pakistan (SW), Philippines, Western Samoa, Thailand, Vietnam, AUSTRALASIA & OCEANIA, Australia (New South Wales, NT, Qd), Fiji, Hawaii, New Caledonia, New Hebrides, New Zealand, Papua New Guinea, Western Samoa, American Samoa, Solomon Islands, EUROPE, Cyprus, Denmark, France, Germany, Italy, Portugal, Romania, Spain, Switzerland, USSR (Caucasus), Yugoslavia, NORTH AMERICA, Canada (Ontario), (Quebec), Mexico, USA (Pa to Fla and Tex.), CENTRAL AMERICA & WEST INDIES, Bahamas, Belize, Cuba, Guatemala, Jamaica, Nicaragua, Panama, Salvador, Trinidad, SOUTH AMERICA, Argentina (Tucuman), Bolivia, Brazil (Bahia), Colombia, Eucador, French, Guiana, Guyana, Paraguay, Surinam, Venezuela.

Alternaria brassicae. [Distribution map].

1971 ◽  
Author(s):  
Keyword(s):  
New Caledonia ◽  
New South ◽  
Far East ◽  
Peninsular Malaysia ◽  
Alternaria Brassicae ◽  
Distribution Map ◽  
Irian Jaya ◽  
South Wales ◽  
Brassica Spp ◽  
East Kazakhstan

Abstract A new distribution map is provided for Alternaria brassicae (Berk.) Sacc. Hosts: Brassica spp. and other Cruciferae. Information is given on the geographical distribution in AFRICA, Angola, Egypt, Ethiopia, Ivory Coast, Kenya, Malawi, Mauritius, Morocco, Mozambique, Rhodesia, Senegal, South Africa, Sudan, Tanzania (Tanganyika), Zambia, ASIA, Afghanistan, Brunei, Burma, Cambodia, Ceylon, China (general) (Manchuria) (Mongolia), Hong-Kong, India (general), Indonesia (Irian Jaya), Iran, Iraq, Israel, Japan, Korea, Laos, Lebanon, Peninsular Malaysia (Sabah), Nepal, Pakistan (E & W), Philippines, Saudi Arabia, Singapore, Taiwan (Formosa), Thailand, Turkey, USSR (Alma-Ata, Soviet Far East) (Kazakhstan), Vietnam, AUSTRALASIA & OCEANIA, Australia (New South Wales, Queensland, Western Australia) (Tasmania), New Caledonia, New Zealand, Papua & New Guinea, EUROPE, Bulgaria, Britain, Cyprus, Denmark, France, Finland, Germany, Greece, Italy, Netherlands, Norway, Poland, Romania, Sardinia, Sweden, Switzerland, USSR (general), Yugoslavia, NORTH AMERICA, Canada, Mexico, United States (general), CENTRAL AMERICA & WEST INDIES, Bermuda, Costa Rica, Dominican Republic, Guatemala, Honduras, Jamaica, Nicaragua, Panama, Puerto Rico, Salvador, Trinidad, SOUTH AMERICA, Argentina (Buenos Aires, La Plata), Bolivia, Brazil (South-East), Chile, Colombia, Guyana, Peru, Surinam, Uruguay, Venezuela.

Ceratocystis paradoxa. [Distribution map].

1987 ◽  
Author(s):  
Keyword(s):  
New Caledonia ◽  
New South ◽  
Solomon Islands ◽  
Uttar Pradesh ◽  
Ananas Comosus ◽  
Distribution Map ◽  
South Wales ◽  
Ceratocystis Paradoxa ◽  
Chagos Archipelago ◽  
New Distribution

Abstract A new distribution map is provided for Ceratocystis paradoxa (Dade) C. Moreau. Hosts: Pineapple (Ananas comosus), sugarcane (Saccharum), banana (Musa) etc. Information is given on the geographical distribution in Africa, Algeria, Angola, Burkina Faso, Cameroon, Congo, Egypt, Ethiopia, Ghana, Guinea, Ivory Coast, Kenya, Madagascar, Malawi, Mauritania, Mauritius, Morocco, Mozambique, Nigeria, Reunion, Senegal, Sierra Leone, Somalia, South Africa, Swaziland, Tanzania, Togo, Tunisia, Uganda, Zaire, Zimbabwe, Asia, Andaman Islands, Bangladesh, Brunei, Burma, Chagos Archipelago, China, Jiangsu, Nanking, India, Assam, Kerala, madras, Mysore, Punjab, Pusa, Uttar Pradesh, Maharashtra, Indonesia, Java, Sumatra, Iran, Iraq, Japan, Kampuchea, Malaysia, Okinawa, Pakistan, Philippines, Sri Lanka, Taiwan, Thailand, Vietnam, Australasia & Oceania, Australia, New South Wales, Queensland, Fiji, Hawaii, New Caledonia, Papua New Guinea, Solomon Islands, Tahiti, Vanuatu, Europe, France, Italy, Madeira, North America, Mexico, USA, Central America & West Indies, Antigua, Barbados, Belize, Costa Rica, Cuba, Dominican Republic, Dominica, Guadeloupe, Guatemala, Haiti, Honduras, Jamaica, Martinique, Nevis, Nicaragua, Panama, Puerto Rico, St Kitts, St Lucia, St Vincent, Salvador, Trinidad & Tobago, South America, Argentina, Brazil, Colombia, Ecuador, Guyana, Paraguay, Peru, Surinam, Uruguay, Venezuela.

Pseudomonas cichorii. [Distribution map].

2020 ◽  
Author(s):  
Keyword(s):  
New York ◽  
North Carolina ◽  
Prince Edward Island ◽  
New Caledonia ◽  
New South ◽  
Federal District ◽  
Distribution Map ◽  
Pseudomonas Cichorii ◽  
South Wales ◽  
New Distribution

Abstract A new distribution map is provided for Pseudomonas cichorii (Swingle) Stapp. Pseudomonadales: Pseudomonadaceae. Hosts: lettuce (Lactuca sativa), chicory (Cichorium spp.) and many others. Information is given on the geographical distribution in Africa (Burundi, Egypt, South Africa, Tanzania), Asia (China, Fujian, Guangdong, Hainan, Hebei, Inner Mongolia, Sichuan, India, Delhi, Iran, Japan, Hokkaido, Korea Republic, Taiwan, Turkey), Europe (Belgium, Bulgaria, France, Germany, Greece, Mainland, Crete, Italy, North Macedonia, Portugal, Russia, Serbia, Spain, Ukraine, United Kingdom), North America (Barbados, Canada, Alberta, British Columbia, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan, Cuba, Mexico, Puerto Rico, USA, Alabama, California, Florida, Georgia, Hawaii, Illinois, Indiana, Louisiana, Mississippi, Montana, New Jersey, New York, North Carolina, Pennsylvania, Tennessee, Washington), Oceania (Australia, New South Wales, Queensland, New Caledonia, New Zealand), South America (Argentina, Brazil, Bahia, Federal District, Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, São Paulo, Chile, Colombia).

Sclerotinia minor. [Distribution map].

2003 ◽  
Author(s):  
Keyword(s):  
New York ◽  
North Carolina ◽  
United Arab Emirates ◽  
New Caledonia ◽  
New South ◽  
Distribution Map ◽  
Sclerotinia Minor ◽  
South Wales ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Sclerotinia minor Jagger Fungi: Ascomycota: Helotiales Hosts: Lettuce (Lactuca sativa) and a range of other crop plants. Information is given on the geographical distribution in EUROPE, Austria, Czech Republic, France, Germany, Hungary, Italy, Netherlands, Romania, Slovakia, Spain, Mainland Spain, UK, Yugoslavia (Fed. - Rep.), ASIA, China, Hubei, Iran, Turkey, United Arab, Emirates, AFRICA, Kenya, South Africa, NORTH AMERICA, Canada, Ontario, Quebec, USA, Arizona, California, Maryland, New Jersey, New York, North Carolina, Oklahoma, Texas, Virginia, SOUTH AMERICA, Argentina, Brazil, Ceara, Sao Paulo, Colombia, OCEANIA, Australia, New South Wales, Queensland, Tasmania, Victoria, Western Australia, New Caledonia, New Zealand.

A new male-killing parasitism:Spiroplasmabacteria infect the ladybird beetleAnisosticta novemdecimpunctata(Coleoptera: Coccinellidae)

Parasitology ◽  
2006 ◽  
Vol 132 (6) ◽  
pp. 757-765 ◽  
Author(s):  
M. C. TINSLEY ◽  
M. E. N. MAJERUS
Keyword(s):  
Phylogenetic Analysis ◽  
Sex Ratio ◽  
High Efficiency ◽  
Sex Ratios ◽  
Egg Hatch ◽  
Hatch Rate ◽  
Male Killing ◽  
Offspring Sex ◽  
Novel Host ◽  
Males And Females

Whilst most animals invest equally in males and females when they reproduce, a variety of vertically transmitted parasites has evolved the ability to distort the offspring sex ratios of their hosts. One such group of parasites are male-killing bacteria. Here we report the discovery of females of the ladybirdAnisosticta novemdecimpunctatathat produced highly female-biased offspring sex ratios associated with a 50% reduction in egg hatch rate. This trait was maternally transmitted with high efficiency, was antibiotic sensitive and was infectious following experimental haemolymph injection. We identified the cause as a male-killingSpiroplasmabacterium and phylogenetic analysis of rDNA revealed that it belongs to theSpiroplasma ixodetisclade in which other sex ratio distorters lie. We tested the potential for interspecific horizontal transfer by injection from an infectedA. novemdecimpunctataline into uninfected individuals of the two-spot ladybirdAdalia bipunctata. In this novel host, the bacterium was able to establish infection, transmit vertically and kill male embryos.

Sign in / Sign up

Export Citation Format

Share Document