scholarly journals Sclerophthora rayssiae var. zeae (brown stripe downy mildew of maize).

2021 ◽  
Author(s):  
Clint Magill
Keyword(s):  
Invasive Species ◽  
Downy Mildew ◽  
Seed Treatment ◽  
First Record ◽  
Annual Rainfall ◽  
Seed Transfer ◽  
Brown Stripe

Abstract The first record of brown stripe downy mildew of maize occurred in India in the early 1960s. In 1967, the pathogen was defined as Sclerophthora rayssiae var. zeae by Payak and Renfro. It spread rapidly across India, especially in regions with over 100 cm of annual rainfall and into neighbouring countries, probably via seed transfer. It has been effectively controlled by the use of resistant hybrids and seed treatment. It is not reported to be an invasive species.

Sclerophthora rayssiae var. zeae (brown stripe downy mildew of maize).

2021 ◽  
Author(s):  
Clint Magill
Keyword(s):  
Invasive Species ◽  
Downy Mildew ◽  
Seed Treatment ◽  
First Record ◽  
Annual Rainfall ◽  
Seed Transfer ◽  
Brown Stripe

Abstract The first record of brown stripe downy mildew of maize occurred in India in the early 1960s. In 1967, the pathogen was defined as Sclerophthora rayssiae var. zeae by Payak and Renfro. It spread rapidly across India, especially in regions with over 100 cm of annual rainfall and into neighbouring countries, probably via seed transfer. It has been effectively controlled by the use of resistant hybrids and seed treatment. It is not reported to be an invasive species.

scholarly journals Primeiro relato de Lernaea cyprinacea (Copepoda: Lernaeidae) em girinos e rãs recém-metamorfoseadas em populações selvagens de Lithobates catesbeianus (Anura: Ranidae) na Argentina

2016 ◽  
Vol 15 (1) ◽  
pp. 43 ◽  
Author(s):  
Zulma A. Salinas ◽  
Fernanda G. Biolé ◽  
Pablo R. Grenat ◽  
Favio E. Pollo ◽  
Nancy E. Sala ◽  
...  
Keyword(s):  
Invasive Species ◽  
Clinical Symptoms ◽  
First Record ◽  
Parasitic Infestation ◽  
Anuran Larvae ◽  
Lithobates Catesbeianus ◽  
Secondary Infections ◽  
Lernaea Cyprinacea

Lernaea cyprinacea is an ectoparasitic copepod that can result in the mortality of the host by causing hemorrhages, ulcerations, and secondary infections. Lernaea cyprinacea is widely distributed in Argentina. Previous reports are restricted almost exclusively to cases of parasitism in fishes; copepod parasitism of anuran larvae is rarely documented. This is the first record and description of the parasitic infestation of L. cyprinacaea on tadpoles of the exotic and invasive species Lithobates catesbeianus in Argentina. A total of 15 tadpoles and 21 newly-metamorphosed individuals of L. catesbeianus were collected from the mountain town of Río de los Sauces, and 12 tadpoles from the Toledo Stream. A maximum of two parasites per host was found, principally in the cloaca. Clinical symptoms of inflammation hemorrhage and ulcers in the skin with mucus formation in the attachment area of parasites were observed.

scholarly journals First record of Ceratium furcoides (Dinophyta), an invasive species, in a temporary high-altitude lake in the Iron Quadrangle (MG, Southeast Brazil)

2015 ◽  
Vol 75 (1) ◽  
pp. 98-103 ◽  
Author(s):  
RA. Moreira ◽  
O. Rocha ◽  
RM. Santos ◽  
R. Laudares-Silva ◽  
ES. Dias ◽  
...  
Keyword(s):  
Invasive Species ◽  
High Altitude ◽  
First Record ◽  
Mining District ◽  
Aquatic Communities ◽  
Rainy Period ◽  
Southeast Brazil ◽  
Iron Quadrangle ◽  
Global Connections ◽  
High Altitude Lake

Dinoflagellates of the genus Ceratium are generally marine organisms, but rare occurrences in freshwater have been observed in Brazil. In this paper we are recording for the first time the presence of Ceratium furcoides, an invasive species, in a shallow, natural intermittent pool formed at a high-altitude at the southern end of the Iron Quadrangle, an iron-mining district of Minas Gerais State (Southeast Brazil). Samples were collected in October and November of 2010 (rainy period). The population density of this organism observed in Lagoa Seca (“Dry Pool”) was very low, at most 4 ind L–1. Mountain lakes are extremely vulnerable to atmospheric deposition of organisms, making them valuable witnesses both of the many forms of impact arising from human activities and of the extended global connections that facilitate the dispersion and introduction of new species over great distances. Studies on the population dynamics of C. furcoides in natural tropical systems are still rare and very recent to the brazilian scenario and hence the monitoring of its dynamics and the potential impact on aquatic communities of its becoming established are essential to an understanding of the process of bioinvasion by this species.

scholarly journals Isognomon bicolor (C. B. Adams, 1845) (Mollusca: Bivalvia): first record of this invasive species for the States of Paraíba and Alagoas and new records for other localities of Northeastern Brazil

Check List ◽  
2013 ◽  
Vol 9 (1) ◽  
pp. 157 ◽  
Author(s):  
Thelma Lúcia Pereira Dias ◽  
Ellori Laíse Silva Mota ◽  
Anne Isabelley Gondim ◽  
Jacicleide Macedo Oliveira ◽  
Emanuelle Fontenele Rabelo ◽  
...  
Keyword(s):  
Invasive Species ◽  
New Record ◽  
New Records ◽  
Rio Grande ◽  
First Record ◽  
The State ◽  
Northeastern Brazil ◽  
Northeast Brazil ◽  
Littoral Region ◽  
Exotic Invasive

This study provides the first record of the exotic invasive bivalve Isognomon bicolor for the State of Paraíba, Northeastern Brazil. It has been found to occur in at least twelve coastal reefs along the coast. We also present its first record for the State of Alagoas and new record localities for the States of Rio Grande do Norte and Pernambuco, including its occurrence in hypersaline estuaries. From these records the distribution range of I. bicolor has been expanded to the littoral region of Northeast Brazil, where this invasive species seems well established.

scholarly journals First record of the invasive species Rottboellia cochinchinensis (Poaceae, Andropogoneae) in the South Region of Brazil

Check List ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 1930
Author(s):  
Luís Adriano Funez ◽  
João Paulo Ramos Ferreira ◽  
Gustavo Hassemer ◽  
Rafael Trevisan
Keyword(s):  
Invasive Species ◽  
First Record ◽  
The South ◽  
Rottboellia Cochinchinensis

scholarly journals The pig of the Lençóis Maranhenses, first record of wild boar (Sus scrofa) in Maranhão State, Brazil

Check List ◽  
2019 ◽  
Vol 15 (4) ◽  
pp. 1-1
Author(s):  
Gilberto Nepomuceno Salvador ◽  
Nathali Garcia Ristau ◽  
Isabel Sanches da Silva ◽  
André Nunes
Keyword(s):  
Invasive Species ◽  
Wild Boar ◽  
Sus Scrofa ◽  
Native Species ◽  
National Park ◽  
First Record ◽  
Negative Effects ◽  
The World

The wild boar is one of the most dangerous invasive species. It is widespread in the world, including records for many Brazilian states. However, there is a lack of record from Maranhão state. In the present study, we reported a population of wild boar inside the Lençóis Maranhenses National Park, in Barrerinhas county, State of Maranhão. We discuss about the negative effects of this introduction on native species, including a record of predation by wild boar in nests of endangered turtles.

scholarly journals On track to becoming a cosmopolitan invasive species: First record of the box tree moth Cydalima perspectalis (Lepidoptera: Crambidae) in the African continent

2020 ◽  
Vol 29 (2) ◽  
pp. 27
Author(s):  
Karim Haddad ◽  
Konstantinos Kalaentzis ◽  
Jakovos Demetriou
Keyword(s):  
Invasive Species ◽  
First Record ◽  
African Continent ◽  
Ecological Implications

Native to E. Asia, the box tree moth Cydalima perspectalis (Walker, 1859) has managed to establish itself, and gradually expand its distribution, across Europe, Asia and recently America. This publication documents the first known record of the invasive species in Africa. The moth was observed in Constantine, Algeria in 2018 and was later identified as C. perspectalis. Possible scenarios of its introduction on the continent, as well as potential ecological implications, are discussed.

scholarly journals Alien water lettuce (Pistia stratiotes L.) outcompeted native macrophytes and altered the ecological conditions of a Sava oxbow lake (SE Slovenia)

2020 ◽  
Vol 79 (1) ◽  
pp. 35-42
Author(s):  
Martina Jaklič ◽  
Špela Koren ◽  
Nejc Jogan
Keyword(s):  
Invasive Species ◽  
Thermal Water ◽  
First Record ◽  
Pistia Stratiotes ◽  
Oxbow Lake ◽  
Water Lettuce ◽  
Viable Seed ◽  
Stepping Stones ◽  
Macrophyte Species ◽  
Water Ecosystems

Introduction of an invasive alien macrophyte water lettuce (Pistia stratiotes L.) radically changed the oxbow lake in Prilipe (SE Slovenia) which has thermal springs that enables the winter survival of this tropical invader. About 10 years after the first record of P. stratiotes, the number, abundance and biomass of indigenous and non-indigenous macrophytes as well as different abiotic parameters were measured. In that period, colonized sections (~94% of the oxbow lake) were completely covered with water lettuce, and the only reservoirs of indigenous macrophyte species were the non-colonized areas (6%). Research in 2011 found only a third of the previously recorded indigenous macrophytes, but then only in small section without P. stratiotes. Three of the species that disappeared were on the Red data list. In the colonized section a higher biomass was observed than in the non-colonized section because of high abundance of water lettuce which remained the only macrophyte. Due to the presence of P. stratiotes, the intensity of light penetrating into the depth and water circulation were reduced, as was the oxygen saturation of the water. In addition to the well documented vegetative propagation of P. stratiotes, a well-established and viable seed bank has been detected in the lake sediment and after winter floods also on lake banks. In the future, special attention should be given to the thermal water ecosystems in temperate climates since they can serve as stepping stones and recruitment centres for the establishment and spread of (sub-)tropical invasive species. Facing predicted climate change such local populations of invasive species can act as stepping stones for further dispersal.

scholarly journals The exotic wasp Megastigmus transvaalensis (Hymenoptera: Torymidae): first record and damage on the Brazilian peppertree, Schinus terebinthifolius drupes, in São Paulo, Brazil

2015 ◽  
Vol 87 (4) ◽  
pp. 2091-2095 ◽  
Author(s):  
Pedro J. Ferreira-Filho ◽  
Fátima C.M. Piña-Rodrigues ◽  
José M.S. Silva ◽  
Julio C. Guerreiro ◽  
Thaís C. Ghiotto ◽  
...  
Keyword(s):  
Invasive Species ◽  
Urban Areas ◽  
Natural Regeneration ◽  
First Record ◽  
Sao Paulo ◽  
São Paulo ◽  
Natural Forests ◽  
Schinus Terebinthifolius ◽  
Ecological Regions ◽  
Native Forests

ABSTRACT This paper records the first report of Megastigmus transvaalensis Hussey (Hymenoptera: Torymidae) in Brazilian peppertree, Schinus terebinthifolius Raddi (Anacardiaceae) drupes in Sorocaba, state of São Paulo, Brazil. This wasp is an invasive species and was found damaging S. terebinthifolius drupes in urban areas (35.0±15.8%), natural forests (21.5±10.2%) and restoration areas (15.8±8.4%). The bio-ecology and damage caused by M. transvaalensis in the S. terebinthifolius drupes warrants further study focused upon the management of this phytophagous wasp. Megastigmus transvaalensis has a potential to be disseminated throughout Brazil and is posing a threat to the natural regeneration of S. terebinthifolius in the native forests and restoration areas and ecological regions of this country.

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