scholarly journals Mushroom Phorid Flies. A Review

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1958
Author(s):  
María Jesús Navarro ◽  
Lucía Adriana Escudero-Colomar ◽  
Jaime Carrasco ◽  
Francisco José Gea

Diptera are among the most serious arthropod pests affecting mushroom crops. Phorid flies, especially Megaselia halterata, have traditionally been globally considered as a minor pest, although they are a very important problem on Spanish mushroom farms. The concerns with respect to the phorid fly populations have recently increased, notably jumping from being a minor to major pest in India, UK and the USA, where yield losses ranging between 10 and 40% were reported. This review updates and summarizes the available literature regarding mushroom phorid populations, stressing the natural distribution of phorids and their seasonal distribution, their biology within the growing substrates and the initial sources of infestation on mushroom farms. Moreover, the review also highlights the scarce available tools for their control and the current alternatives to chemical products.


2012 ◽  
Vol 49 (2) ◽  
pp. 465-473 ◽  
Author(s):  
Arno Wielgoss ◽  
Yann Clough ◽  
Brigitte Fiala ◽  
Alfianus Rumede ◽  
Teja Tscharntke


2021 ◽  
Author(s):  
Erin Hodgson

Abstract A. glycines is distributed throughout eastern Asia, principally in China, Japan, Indonesia, Thailand, Korea, far eastern Russia, North Borneo, peninsular Malaysia and the Philippines (Blackman and Easop, 2000). It is a major pest of soyabean in China, causing particularly severe economic losses in the regions of Jilin, Liaoning, Heilongjiang and Neimenggu (Wang et al., 1962). It attacks soyabeans and is also a minor pest on other leguminous crops. It has recently been introduced into Australia, Canada and the USA (Fletcher and Desborough, 2000; Edwards et al., 2001; Michelutti et al., 2002). It has quickly become a soyabean pest in North America, where aphids had previously not attacked soyabeans (Ragsdale et al., 2011). A. glycines causes economic injury due to direct feeding, and indirect injury due to the spread of viruses, in particular Soybean mosaic virus (SMV).



1919 ◽  
Vol 9 (4) ◽  
pp. 279-324 ◽  
Author(s):  
L. H. Gough

The history of but few insects can be compared with that ofPectinophora(Geleckia)gossypiella, which, having started as a minor pest in its native country and having been transported by human agency to a new country, has there suddenly leapt to the most important position as a major pest of the crop it attacks. In this respect it may be placed with thePhylloxeraand the gipsy moth.Although the chief object of this paper is to consider certain aspects of the damage done by the pink bollworm to the cotton crop, the following short summary of the established facts concerning the life-history of the insect may be useful to readers not familiar with its habits.Food-Plants. The pink bollworm feeds on cotton (Gossypium, various species), okra (Hibiscus esculentus; Arabic :bamia; Hindustani :bhindi), Deccan hemp (Hibiscus cannabinus; Arabic :til), hollyhock (Althaea rosea), mallow (Malvasp., probablysilvestris),Thespesia populnea(fideFullaway ; this record is considered doubtful by Busck), andAbutilonsp. (Arabic :hanbuk;fideKing).It will be noticed that all these plants belong to the Malvaceae. The record for pomegranates given by Dudgeon and Gough is without doubt due to error.Of all these food-plants cotton is preferred. The larvae attack the stems (feeding in the cambium and boring a tunnel which encircles the stem), flowers, flower-buds, bolls and seeds.



Author(s):  
Margarita Díaz-Andreu ◽  
Marie Louise Stig Sørensen

Gender archaeology has by now become a relatively well-established research topic within archaeology. Recent years have seen the publication of a number of edited volumes, a rapidly expanding number of papers, and even a few journals and newsletters dedicated to this subject. It is, therefore, very surprising that in this literature the historiographic analysis of women archaeologists has played only a minor part. Likewise they are hardly acknowledged in the ‘folk’ histories of the discipline (Lucy and Hill 1994: 2). The need to understand the disciplinary integration of women, to appreciate the varying socio-political contexts of their work, to reveal the unique tension between their roles as women and their academic lives, has become obvious and is strongly felt in many areas of the discipline. The insights yielded by such analysis will have significance at many levels and will be of paramount importance for the intellectual history of archaeology. In particular, such insights will necessitate a much-needed revision of disciplinary history by revealing its mechanisms of selecting and forgetting, and will play an important role in the analysis of archaeology’s knowledge claims. Histories of archaeology have broadly accepted, and spread, a perception of archaeology as being male-centred, both intellectually and in practice. These accounts, written by male archaeologists such as Glyn Daniel (1975), Alain Schnapp (1993), and Bruce Trigger (1989), are inevitably androcentric in their conceptualization and reconstruction of the disciplinary past. Their versions have, however, recently begun to be contested, as concern with critical historiography has grown, and a few explicit historiographical accounts of women archaeologists have appeared. So far, with regard to the role of women, the most extensive contributions are the edited volumes by Claassen (1994) and du Cros and Smith (1993). While providing an important beginning, these publications show that there is still a long way to go. In particular they demonstrate a gap in research coverage, as no investigation of the contribution of women outside the USA and Australia exists.



Zootaxa ◽  
2008 ◽  
Vol 1959 (1) ◽  
pp. 58-64 ◽  
Author(s):  
K. D. PRATHAPAN ◽  
K. N. ANITH ◽  
M. H. FAIZAL ◽  
M. LEKHA ◽  
M. K. DHANYA

The order Phasmatodea, the stick and leaf insects, include fewer crop pests than other phytophagous groups of insects. Bedford (1978) reviewed their biology and ecology. Outbreaks of stick insects on economically important plants are known from the USA (Graham, 1937), Fiji and other islands in the South Pacific (O’Connor, 1949; Paine, 1968), Australia (Key, 1991) and China (Hennemann, et. al., 2008). Lit and Eusebio (2008) described Pharnacia magdiwang (Phasmatidae) [a junior synonym of P. ponderosa Stål (Hennemann and Conle, 2008)], a minor pest on mango in the Philippines and listed eight species of stick insects associated with economically important plants. Phasmatodea of the Indian subcontinent are poorly known in spite of the rich diversity and none of them are known to be associated with crop plants.



Author(s):  
John Manu ◽  
J. V. K. Afun ◽  
Charles Kwoseh

Tomato (Lycopersicon esculentum) is a popular and important crop as it is consumed worldwide. It serves as a source of nutrients such as vitamins A and C. In Ghana, tomato production contributes to agricultural GDP, employment creation and foreign exchange earnings. However, tomato production is faced with challenges that hamper productivity. This has been attributed mainly to attacks by pests such as fruit borers. Therefore, this study was conducted to ascertain the characteristics of tomato farmers in Sekyere Kumawu and Asante Akim North districts in Ghana and their knowledge on fruit borers. Structured questionnaires were administered to gather data from sixty respondents who were sampled through a multistage sampling technique. Results from the survey showed male dominance in commercial tomato production in both districts with an average age of 43 years, which falls within the active working age group. Majority of the farmers indicated that they were into tomato production for commercial purposes, and practice sole cropping. More than 60% of the farmers revealed the fruit borer as a major pest causing yield losses of about 27% on average on their farms. Moreover, it was found that majority of the respondents control the fruit borer with synthetic chemicals.



2020 ◽  
Vol 24 (1) ◽  
pp. 82
Author(s):  
Anugerah Pustakawan Pradipta ◽  
F. X. Wagiman ◽  
Witjaksono Witjaksono

Oryctes rhinoceros L. and Xylotrupes gideon L. (Coleoptera: Scarabaeidae) are known to attack palms. O. rhinoceros is a major pest in oil palm while X. gideon is a minor pest found in certain areas with a relatively few numbers. Collecting these beetles by hand picking and trapping are intended to reduce their population. Objectives of this study were to describe an intimacy of shared existence of O. rhinoceros and X. gideon in the oil palm plantation, and to determine the effect of manual collection of the beetles from the decomposing trunks compared to those that were collected using attractant traps. The study was conducted in Asahan Regency, North Sumatera, in Sei Silau PTPN III oil palm plantation. Five traps (2 Ha/trap) containing the pheromone ethyl-4-methyloctanoate were installed randomly at a replanting area of immature palm. Beetle collection was performed daily for 30 consecutive days using two methods, i.e. (a) hand-picking of beetles on the decomposed trunks at surrounding the trap for 2 hour per day, and (b) using pheromone traps. Simple regression and correlation model was used for data analysis. Results showed that coexistence of O. rhinoceros and X. gideon was observed at the breeding sites of decomposing trunks, but not in the traps, and their coexistence showed a weak relationship (r = 0.12). Number of collected O. rhinoceros (221 beetles) was much more than X. gideon (82 beetles). Natural sex ratio (male: female) was approximately 0.5 for O. rhinoceros and 0.4 for X. gideon. Collection of the beetles in the decomposed trunks showed a moderately positive relationship (r = 0.43) with, and significantly influenced (18.73%) to the collection of beetles using pheromone traps.



2021 ◽  
Author(s):  
Deborah A. Samac

Abstract Fusarium oxysporum is a common soil inhabitant around the world. It is regarded as a species complex that includes non-pathogenic, plant pathogenic, and human pathogenic strains. The plant pathogens cause wilt diseases on most crop plants. F. oxysporum f.sp. medicaginis causes a fatal wilt disease on Medicago sativa, M. truncatula, and Vicia sativa. It is found throughout the USA and in Alberta, Canada. The limited reports of Fusarium wilt of alfalfa outside of these areas suggests that the pathogen is native to North America. The pathogen is potentially invasive through movement of infested soil; it is not seedborne. Infected alfalfa plants usually die several months after infection and can lead to significant stand and yield losses. Nearly all modern commercial cultivars are highly resistant or resistant to Fusarium wilt. F. oxysporum f.sp. medicaginis is not on an alert list nor is it a regulated pathogen.



1983 ◽  
Vol 10 (2) ◽  
pp. 62-66 ◽  
Author(s):  
J. K. Pataky ◽  
M. K. Beute ◽  
J. C. Wynne ◽  
G. A. Carlson

Abstract The effects of Cylindrocladium black rot (CBR) of peanut (Arachis hypogaea L.) on yield, market quality and monetary value of the peanut crop were determined for Florigiant, NC 8C and two advanced generation CBR-resistant breeding lines. Percentage extra large kernels (ELK) and fancy size pods (FS) were decreased by CBR. The reduction of ELK has a minor effect on value. The reduction of FS had no effect on value. Reduction of value due to CBR was primarily the result of lower peanut yields. A highly significant proportion of the variation in yield and value was explained by regressions of yield and value on % CBR incidence measured approximately 1 wk before digging. Yield losses ranged from 250 to 450 kg/ha and value reductions for Florigiant and NC 8C were from $170 to $190/ha in 1980 and 1981 and from $270 to $290/ha in 1982 for each 10% CBR incidence. The relationships among CBR and yield, quality and value were similar for NC 8C and Florigiant. Therefore, NC 8C should sustain lower losses due to CBR than Florigiant because NC 8C is moderatley CBR-resistant.



2020 ◽  
Author(s):  
Ikkei Shikano ◽  
Jason Woolcott ◽  
Kevin Cloonan ◽  
Stefanos Andreadis ◽  
Nina E Jenkins

Abstract The mushroom phorid fly, Megaselia halterata (Wood), is a common pest of mushroom production in many parts of the world. Due to the reduced availability of conventional insecticides for mushroom production, M. halterata has recently developed into a major pest in the top mushroom-producing county in the United States (Chester County, PA). Mushrooms are grown entirely indoors, and though larval development of M. halterata occurs in the mushroom-growing substrate, adult flies have been captured both inside and outside of the facilities. Here, we investigated three factors that might contribute to their growth and development. 1) The effects of ambient temperature (15–30°C) and relative humidity (RH; 21–98%) on adult M. halterata lifespan, 2) the effect of spawned compost stage (freshly inoculated with spawn vs 14-d spawned compost) on reproductive output, and 3) the effect of population density on reproductive output. The longevity of adult M. halterata increased under cooler temperatures and more humid conditions (>75% RH), which reflect the conditions inside mushroom-growing facilities. Similar numbers of flies emerged from freshly inoculated and 14-d spawned compost, but flies emerged earlier from 14-d spawned compost. The higher the parental fly density, the more offspring emerged from spawned compost, but the positive relationship reached a plateau beyond 40 parental mating pairs per 100 g of compost. Our findings highlight relevant abiotic and biotic factors that may contribute to M. halterata population dynamics.



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