scholarly journals Partial consumption of different species of aphid prey by the predator Macrolophus pygmaeus (Hemiptera: Miridae)

2016 ◽  
Vol 113 ◽  
pp. 345-351 ◽  
Author(s):  
Dionyssios LYKOURESSIS ◽  
Dionyssios PERDIKIS ◽  
Ioannis MANDARAKAS
Keyword(s):  
Macrolophus Pygmaeus ◽  
Aphid Prey ◽  
Partial Consumption

Distribution, abundance and natural enemies of the invasive tomato leafminer, Tuta absoluta (Meyrick) in Kenya

2021 ◽  
pp. 1-16
Author(s):  
G. Kinyanjui ◽  
F. M. Khamis ◽  
F. L. O. Ombura ◽  
E. U. Kenya ◽  
S. Ekesi ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Sustainable Management ◽  
Management Strategies ◽  
Tuta Absoluta ◽  
Macrolophus Pygmaeus ◽  
Larval Parasitoids ◽  
Parasitism Rates ◽  
Nesidiocoris Tenuis ◽  
Sentinel Plants ◽  
Open Fields

Abstract Tuta absoluta (Meyrick) has become a serious menace to sustainable production of tomato in Kenya. A survey was conducted between April 2015 and June 2016 to determine its distribution, abundance, infestation, and damage levels on tomato, and associated natural enemies. Trap counts of T. absoluta moths were recorded in all surveyed 29 counties, which indicated its nationwide distribution irrespective of altitude. Tuta absoluta was present in both open fields and greenhouses. The highest moth/trap/day was 115.38 ± 15.90. Highest leaf infestation was 92.22% and the highest number of mines and larvae per leaf were 3.71 ± 0.28 and 2.16 ± 0.45, respectively. Trap captures in terms of moth/trap/day were linearly and positively related to leaf infestations in open fields (R2 = 0.81) and greenhouses (R2 = 0.61). Highest fruits’ infestation and damage were 60.00 and 59.61%, respectively, while the highest number of mines per fruit was 7.50 ± 0.50. Nesidiocoris tenuis (Reuter) and Macrolophus pygmaeus (Rambur) were identified as predators of T. absoluta larvae. Nine species of larval parasitoids were recovered from infested foliage, with a combined parasitism of 7.26 ± 0.65%. Hockeria species was the most dominant (31.25%) and accounted for 12.88 ± 1.47% parasitism. Two species of larval parasitoids, Hockeria and Necremnus were obtained from sentinel plants with an average parasitism of 1.13 ± 0.25. The overall abundance and parasitism rates of recovered natural enemies were low to effectively control the field populations of T. absoluta. These findings form the basis of researching and developing effective and sustainable management strategies for the pest.

The omnivorous predator Macrolophus pygmaeus induces production of plant volatiles that attract a specialist predator

2022 ◽  
Author(s):  
Nina Xiaoning Zhang ◽  
Joke Andringa ◽  
Jitske Brouwer ◽  
Juan M. Alba ◽  
Ruy W. J. Kortbeek ◽  
...  
Keyword(s):  
Plant Volatiles ◽  
Macrolophus Pygmaeus ◽  
Specialist Predator

scholarly journals The omnivorous predator Macrolophus pygmaeus , a good candidate for the control of both greenhouse whitefly and poinsettia thrips on gerbera plants

2019 ◽  
Vol 27 (3) ◽  
pp. 510-518 ◽  
Author(s):  
Ada Leman ◽  
Barbara L. Ingegno ◽  
Luciana Tavella ◽  
Arne Janssen ◽  
Gerben J. Messelink
Keyword(s):  
Greenhouse Whitefly ◽  
Macrolophus Pygmaeus

scholarly journals EFFECTS OF BROWSING PRESSURE ON THE TEXTURAL CHARACTERISTICS OF JUNIPERUS COMMUNIS L. BRANCHES

AGROFOR ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Jordi SALDO ◽  
Jordi BARTOLOMÉ
Keyword(s):  
Mechanical Characteristics ◽  
Small Ruminants ◽  
Grazing Pressure ◽  
Survival Strategy ◽  
Male And Female ◽  
Open Structure ◽  
Juniperus Communis ◽  
Textural Characteristics ◽  
Natural Park ◽  
Partial Consumption

In the Montseny Natural Park junipers scattered in the grasslands can be found. In some of these areas of the park, the breeding of small ruminants is allowed, while in others only find wildlife exists. Junipers develop differently if browsed, adopting spherical or conical morphotypes. This paper studies the mechanical characteristics of the shoots according to the sex of the bush and the branching regime to which they are subjected. 729 individual shoots were taken from male and female junipers exposed to browsing from goats and ewes and those not grazed and sampled at a different position from each bush. All the leaves were taken off the non-lignified end of the shot to be studied by a simulated bite. The strength needed to cut the apical twigs of junipers was measured using a Volodkevich jaw, which mimics the way incisors act, using a texturometer. The diameter of the branches differs according to bushes’ sex being larger for females and the individuals not exposed to predation pressure. Although the differences induced by sex were significant, differences due to grazing pressure were larger. The annual branches were thicker and longer in non-grazed junipers. This difference was not due to the partial consumption of the studied branches, as all the samples were collected in full. The continued browsing pressure leads to a survival strategy of growing, with branches tighter packaged as was evident in the analysis of the branching structure. The longer annual branches in non-grazed bushes allow for a more open structure. The force necessary to break the branch was significantly higher on females. This could be related to the fact that the females must bear the weight of the fruits. The elasticity of the annual shots was significantly higher on non-grazed junipers, a fact that could be considered as a way to tolerate herbivory.

High population densities of Macrolophus pygmaeus on tomato plants can cause economic fruit damage: interaction with Pepino mosaic virus ?

2015 ◽  
Vol 72 (7) ◽  
pp. 1350-1358 ◽  
Author(s):  
Rob Moerkens ◽  
Els Berckmoes ◽  
Veerle Van Damme ◽  
Nelia Ortega-Parra ◽  
Inge Hanssen ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
High Population ◽  
Population Densities ◽  
Pepino Mosaic Virus ◽  
Tomato Plants ◽  
Macrolophus Pygmaeus ◽  
Fruit Damage

Combined thermal and insecticidal stresses on the generalist predator Macrolophus pygmaeus

2020 ◽  
Vol 729 ◽  
pp. 138922 ◽  
Author(s):  
Michele Ricupero ◽  
Khaled Abbes ◽  
Khalid Haddi ◽  
Alican Kurtulus ◽  
Nicolas Desneux ◽  
...  
Keyword(s):  
Generalist Predator ◽  
Macrolophus Pygmaeus
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