Larvicidal activity, inhibition effect on development, histopathological alteration and morphological aberration induced by seaweed extracts in Aedes aegypti (Diptera: Culicidae)

Abstract

The study provided information on various effects of seaweed extracts on Ae. aegypti. Further investigation on identifying the active compounds and their mechanisms of action is recommended.

Nanoemulsion Loaded with Volatile Oil from Piper alatipetiolatum as an Alternative Agent in the Control of Aedes aegypti

“…Larvae and pupae deaths probably occurred due to the significant nanometric scale size of nanosystems, physicochemical characteristics, concentration, interaction of the active principle, as well as the time of direct contact with the insect cuticle, which allows fast penetration of the volatile oil in animal organisms (Nel et al 2009;Sugumar et al 2014;Volpato et al 2016). Also, the size of the particles allows them to be ingested by the larvae, increasing the action of volatile oil up to 20 times to reach different parts of the body, causing death in a shorter time (Abed et al 2007;Okonogi and Chaiyana 2012;Bianco et al 2013;Kabir et al 2013;Pavela et al 2019), by neutralizing the complex defense system consisting of the enzymes glutathione S-transferase, α and β esterases, and GABA, which have the function of recognizing, inhibiting, and eliminating toxic substances (Wang et al 2013;Yu et al 2015;Ngrenngarmlert et al 2016;Leesombun et al 2017). Furthermore, the action of the volatile oil inhibiting the acetylcholinesterase enzyme (AChE) causes the nervous system to collapse due to uncontrolled transmission of nerve impulses, resulting in accelerated movements, tremors, lethargic movements, and larvae or pupae darkening, prior to death (Carreño et al 2014;Okonogi and Chaiyana 2012;Carreño Otero et al 2018).…”

Structural characterization and evaluation of mosquito-larvicidal property of silver nanoparticles synthesized from the seaweed, Turbinaria ornata (Turner) J. Agardh 1848

“…Especially in India, every year two million malaria cases are being reported (Veerakumar et al 2014). The mosquito species, Aedes aegypti is a vector of chikungunya and dengue virus (Flavivirus) and it is an anthropophilic mosquito, which has got an intimate relationship with human by exhibiting several behavioral traits like oviposition in man-made and man-used natural and artificial containers (Yu et al 2015). It causes chikungunya, a severe viral disease which has been recently considered to be an important public health problem in India and in other countries like Senegal and West Africa (Yamar et al 2005).…”

Larvicidal and Enzymatic Inhibition Effects of Annona Muricata Seed Extract and Main Constituent Annonacin against Aedes Aegypti and Aedes Albopictus (Diptera: Culicidae)

“…larvae has been investigated in recent studies [1,37]. Among the explanations of this mechanism are the ultrastructural alterations of organs such as anal papillae [38], intestinal and tracheal system damage [1], inhibition of enzymatic activity [39], and morphological aberrations [40]. In this study, we investigated the effect of ACERF and annonacin on the inhibition of proteins important for the development of Aedes spp.…”