Latest News on Hemiptera Research: Dec – 2019

The Saliva of Hemiptera

Salivary operate is very fascinating in Hemiptera as a result of the results the secretion has on the living and living organisms, on that several of those insects feed. The secretion of Hemiptera is by no suggests that an easy secretion—in addition to the same old secretion functions of wetting food and mixture it with hydrolytic enzymes before bodily function, the secretion of herbivorous species plays a crucial physiochemical role throughout the mechanical penetration of plant tissues by the piercing and consumption mouthparts; in accomplishing this task, the secretion might vary in its chemical composition and physical consistency from one moment to ensuing. Moreover, deposits of natural process parts of the secretion of the many species continue the food plants, modifying the long run effects of feeding by the insects. This chapter compiles the assorted kinds of investigation on secretion functions within the suborder Homoptera and Heteroptera, and suggests profitable lines of future investigation supported analogous functions in numerous assortment teams. [1]

The kinetochore of the Hemiptera

To induce body breakage, adult males and nymphs of Euschistus servus, E. tristigmus, and Solubea pugnax were irradiated with a hundred to 750 r doses of x rays. The diffuse nature of the structure was incontestible by the power of body fragments to bear on themselves mitotically through several cell generations of spermatogonia. Free fragments, once not immobilized by the consequences of radiation are capable of cellular division cell division. A holokinetic, instead of a telomeric, nature was so incontestible for the cellular division restriction of structure activity to body ends, traditional for suborder Heteroptera and sure different Hemiptera. easy fragmentation as an element within the evolution of compound sex chromosomes was supported by the observation that fragments of the sex chromosome coorient with the Y in an exceedingly typical precarious pairing. [2]

Revision of the Triatominae (Hemiptera, Reduviidae), and their significance as vectors of Chagas’ disease.

This wonderful treatise, ready by 2 acknowledge authorities in their field, has already become established because the normal compartmentalization reference on the Triatominae. it’s to be welcome as a succinct, authoritative written material, delivery along info on the taxonomy and distribution of the cluster, that was antecedently wide scattered and infrequently tough to get. 5 tribes, fourteen genera and 112 species ar recognized, and 111 species ar represented and illustrated [the exception Rhodnius dalessandroi, couldn’t be examined by the authors and, because the original description is taken into account by them to be inadequate, ought to maybe be placed as nomen dubium? ]. Six new species ar included: genus Triatoma guazu, Linshcosteus chota, L. kali, Belminus herren, Parabelminus yurupucu and Microtriatoma borbai. [3]

Phenology, seasonal abundance and stage-structure of spittlebug (Hemiptera: Aphrophoridae) populations in olive groves in Italy

Spittlebugs (Hemiptera: Aphrophoridae) ar the dominant xylem-sap feeders within the Mediterranean space and therefore the solely verified vectors of Xylella fastidiosa ST53, the entity of the olive plant disease epidemic in Italian region, Italy. we’ve investigated the structured population phenology, abundance and seasonal movement between crops and wild plant species of each the nymphal and adult stages of various homopterous insect species in olive groves. Field surveys were conducted throughout the 2016–2018 amount in four olive orchards set in coastal and inland  areas within the Italian region and Liguria regions in Italian Republic. The nymphal population within the nonwoody cowl was calculable mistreatment quadrat samplings. Adults were collected through sweep nets on 3 completely different vegetative components: nonwoody cowl, olive cover and wild woody plants. [4]

Post Infectional Biochemical Changes Induced by Mealybug Paracoccus marginatus (Hemiptera: Pseudococcidae) in Leaves of Superior Seedless Grapes

Mealybug (Paracoccus marginatus) happiness to the family Pseudococcideae, could be a devastating tormenter of grapevine in numerous elements of the globe together with India. because of its piercing intake sort feeding behaviour, it injures the vines automatically and induces many physiological alterations within the host. to judge reaction of Superior stoneless to the current infective agent, this study was undertaken at geographical region Agricultural University, Ludhiana (Punjab) in 2017. The post infectional alterations were compared in healthy and coccid insect plagued leaves of grapevines below natural conditions so as to decipher the defense response of the plant. [5]

Reference

[1] Miles, P.W., 1972. The saliva of Hemiptera. In Advances in insect physiology (Vol. 9, pp. 183-255). Academic Press. (Web Link)

[2] Hughes-Schrader, S. and Schrader, F., 1961. The kinetochore of the Hemiptera. Chromosoma (West Germany), 12. (Web Link)

[3] Lent, H. and Wygodzinsky, P., 1979. Revision of the Triatominae (Hemiptera, Reduviidae), and their significance as vectors of Chagas’ disease. Bulletin of the American museum of Natural History, 163(3), (Web Link)

[4] Phenology, seasonal abundance and stage-structure of spittlebug (Hemiptera: Aphrophoridae) populations in olive groves in Italy
Nicola Bodino, Vincenzo Cavalieri, Crescenza Dongiovanni, Elisa Plazio, Matteo Alessandro Saladini, Stefania Volani, Anna Simonetto, Giulio Fumarola, Michele Di Carolo, Francesco Porcelli, Gianni Gilioli & Domenico Bosco
Scientific Reports volume 9, (Web Link)

[5] Murria, S., Kaur, N. and Arora, N. K. (2018) “Post Infectional Biochemical Changes Induced by Mealybug Paracoccus marginatus (Hemiptera: Pseudococcidae) in Leaves of Superior Seedless Grapes”, Current Journal of Applied Science and Technology, 31(6), (Web Link)

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