This scientic publication in digital format is a continuation of the Printed Review: Legal Deposit pp 196802ZU42, ISSN 0378-7818.
Narrea and Gómez. Rev. Fac. Agron. (LUZ). 2024 41(2): e244119
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It is observed that in shelter A, fennel (Apiacea), calendula 
and  sunowers  (Asteraceae),  in  that  order,  stood  out  for  hosting 
the largest population of predators in the study, mainly C. externa, 
coinciding with similar studies that highlight fennel as an excellent 
reservoir  of  green  lacewings  (Chrysopidae),  hoveries  (Manfrino 
et al., 2011) and ladybugs (Coccinellidae) (Rebolledo et al., 2007). 
As for the pollinator, it was observed that this plant hosted the 
largest populations of Chrysomya sp. Calendula did not harbor any 
phytophagous and, like the reports by Andorno et al. (2014), was 
a shelter for ladybugs and parasitoid wasps. Coinciding with the 
results of Ramírez-Reyes et al. (2019), the sunower did not harbor 
parasitoids, but if there was a high population of Thrips tabaci, this 
attraction could be  due to the size of the sunower owers,  which, 
being very large, show much more their yellow color, a color that, 
according to Joyo &Narrea (2015), exerts an attractive eect on thrips 
to the point that it is common to use yellow sticky traps in vineyards 
to attract and trap individuals of this pest.
Predators of shelter B were found mainly in zinnia (Asteraceae) 
and fennel (Apiaeae); zinnia hosted the largest population of predator 
C. externa  of  the  entire  study;  fennel,  as  in  shelter  A,  hosted  the 
four functional groups, of which predators were the most abundant, 
although in smaller numbers than zinnia. In contrast, crotalaria 
harbored few predators, more phytophagous species, and no 
parasitoids. According to Van Rijn & Wäckers (2016), not all of the 
plant species that make up the varied plants (plant shelters) produce 
adequate resources, nor is it known for sure which species will be 
most eective in hosting benecial organisms. 
In shelter C, characterized by being the least abundant, least 
diverse, and with the lowest population of biological controllers, 
basil (Lamiacea) stood out for being the only plant in the entire study 
in which no green lacewings were found; according to Adam et al. 
(2019) and Hassan et al. (2015), this plant has a repellent eect against 
several insects, which is one reason why this shelter had the lowest 
insect population in general (20.6 % of the insects present throughout 
the study);  however,  this repellent eect would not apply to bees, 
which preferred basil over other plants, probably since, unlike other 
plants, basil owers are small and open, conditions that, according to 
Altieri & Nicholls (2012), make its pollen and nectar more accessible 
to  bees  and  other  pollinators;  crotalaria  and  salvia  had  the  lowest 
population records in the study, with bees being the most important 
population.
Conclusions
In the three shelters evaluated, entomofauna composed of 
predators,  parasitoids,  pollinators,  and  phytophagous  was  found; 
pollinators are the most abundant and parasitoids are the least 
abundant. Shelters A and B were similar in terms of the composition 
of these functional groups.
Shelter A was the most abundant and, together with shelter B, 
stood out for hosting the largest number of biological controllers of 
the grapevine; in both shelters, fennel (Foeniculum vulgare) was the 
outstanding plant species in richness and abundance of predators, 
followed by calendula (Calendula ocinalis) (shelter A) and zinnia 
(Zinnia acerosa)  (shelter  B),  which  also  contributed  a  signicant 
share of predators and parasitoids. Of lesser abundance, shelter C was 
widely inhabited by pollinators, especially Apis mellifera L., which 
was found mostly in basil (Ocimum basilicum).
Among all the predators found, Chrysoperla externa (Hagen) 
stands out, the main controller of the “vine mealybug” (Planococcus 
spp.), which means that the installation of plant shelters in vineyard 
elds  could  represent  an  additional  alternative  to  enhance  the 
biological control of pests in this crop.
Recommendations
Considering that the behavior of insects can vary throughout the 
day and with it the composition, dominance, and evenness of the 
population in plant shelters, it is recommended to carry out similar 
studies with sampling at dierent times than the one in this study.
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