Diversity and distribution in the world of Megalopodidae Latreille (Coleoptera: Chrysomeloidea)

Mirón, Geovanni Miguel Rodríguez

doi:10.1603/ice.2016.109261

Cited by 2 publications

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“…Mosquitoes are very important vectors of several human diseases including malaria, lymphatic filariasis, dengue virus and Zika virus worldwide [1]. Mosquito-borne diseases are the major public health problems in developing countries.…”

Section: Introductionmentioning

confidence: 99%

Qualitative Phytochemical Screening and Larvicidal Efficacy of Physic Nut (Jatropha curcas) Leaves, Stem-bark and Root Extracts on Mosquito Larvae

Buduwara,

Naphtali,

Adiel

et al. 2023

JALSI

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The advance of battle by mosquito species to artificial chemicals has obliged the unrelenting pursuit of nontoxic ones from plants. This study screened the qualitative phytochemicals and evaluated the larvicidal efficacy of extracts of Jatropha curcas leaves, stem-bark and root extracts against third and fourth mosquito instar larvae. The J. curcas obtained were subjected to extraction by maceration. Qualitative phytochemical screening of ethanolic stem-bark, aqueous and ethanolic root extracts plants showed the presence of phenols, saponins, steroids flavonoids, alkaloids, glycosides, carbohydrates and terpenoids. The aqueous extracts of the leaves and stem-bark showed the presence of alkaloids, cardiac glycosides, phenols, saponins, and terpenoids whereas, ethanolic leaves extract had similar phytochemicals with the leaves and stem-bark aqueous extracts but did not have steroids. Twenty-four (24) hours exposure of different concentrations (2.0mg/ml, 4.0mg/ml, 6.0mg/ml, 8.0mg/ml, 10 mg/ml) of various extracts showed that larval mortality increased significantly (P<0.05) with increase in extracts concentration. Aqueous stem-bark extract showed highest mortality with 87% against third mosquito instar larvae followed by aqueous, ethanolic root extracts against third and fourth mosquito instar larvae respectively with 85% larval mortality. However, least mortality was observed in ethanolic leaf extract with 5% larval mortality against fourth mosquito instar larvae. Low LC₅₀ and LC₉₀ values were noticed in ethanolic root and aqueous stem-bark extracts with 2.19mg/ml and 11.51mg/ml respectively. Whereas the highest LC₅₀ and LC₉₀ values were noticed in both ethanolic leaves extracts with 14.09mg/ml and 26.20mg/ml respectively against fourth mosquito instar larvae. Conclusively, aqueous stem-bark and ethanolic root extracts can be harnessed to control 50% and 90% mosquito instar larval mortality respectively. However, there is a need to ascertain the quantities of bioactive components of J. curcas and its toxicity to non-target organisms.

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Section: Introductionmentioning

confidence: 99%

Qualitative Phytochemical Screening and Larvicidal Efficacy of Physic Nut (Jatropha curcas) Leaves, Stem-bark and Root Extracts on Mosquito Larvae

Buduwara,

Naphtali,

Adiel

et al. 2023

JALSI

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“…Megalopodidae currently consists of 552 described species, which are classified into three subfamilies (Megalopodinae, Zeugophorinae, and Palophaginae) (Rodríguez-Mirón 2016). However, the spermathecae of only 5% of these species have been described.…”

Section: Introductionmentioning

confidence: 99%

Comparative morphology of the spermatheca in Megalopodidae (Coleoptera, Chrysomeloidea)1

Rodríguez-Mirón¹,

Zaragoza‐Caballero²,

López‐Pérez³

2017

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The spermatheca is an organ that stores and maintains viability of sperm until fertilization. It has an important role in copulation and oviposition, and it is highly informative in species delimitation. Here, we present a comparative study of the spermathecal morphology in the coleopteran family Megalopodidae. The spermathecae of 34 species, representing 13 genera and all three subfamilies, were studied. Illustrations are newly provided for all species, except in 14 cases in which illustrations were reproduced from previously published literature. Our results show that each subfamily of Megalopodidae can be effectively differentiated based on the particular spermathecal anatomy. In addition, the spermathecal anatomy presents a range of variation within each subfamily, useful for diagnosing species and, in some cases, identifying groups of genera. For instance, the “American group” is thus recognized in this study.

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Diversity and distribution in the world of Megalopodidae Latreille (Coleoptera: Chrysomeloidea)

Cited by 2 publications

References 0 publications

Qualitative Phytochemical Screening and Larvicidal Efficacy of Physic Nut (Jatropha curcas) Leaves, Stem-bark and Root Extracts on Mosquito Larvae

Qualitative Phytochemical Screening and Larvicidal Efficacy of Physic Nut (Jatropha curcas) Leaves, Stem-bark and Root Extracts on Mosquito Larvae

Comparative morphology of the spermatheca in Megalopodidae (Coleoptera, Chrysomeloidea)1

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