Abstract
In spite of advances in invertebrate pest management, the agricultural industry is suffering from impeded pest control exacerbated by global climate changes that have altered rain patterns to favour opportunistic breeding. Thus, novel naturally derived chemical compounds toxic to both terrestrial and aquatic invertebrates are of interest, as potential pesticides. In this regard, marine cyanobacterium-derived metabolites that are toxic to both terrestrial and aquatic invertebrates continue to be a promising, but neglected, source of potential pesticides. A PubMed query combined with hand-curation of the information from retrieved articles allowed for the identification of 36 cyanobacteria-derived chemical compounds experimentally confirmed as being toxic to invertebrates. These compounds are discussed in this review.
Highlights
Changing weather patterns have rendered pest control strategies ineffective
We review toxic chemical compounds isolated from cyanobacteria that may have the potential to be used as bio-molluscicides and bio-ovicides against adult and juvenile snails and its eggs
Aerucyclamides A and B from the toxic freshwater cyanobacterium Microcystis aeruginosa PCC 7806 isolated from a Pasteur Culture Collection of Cyanobacteria in Paris, France
Summary
Changing weather patterns have rendered pest control strategies ineffective. The climate factors that aid pest invasion include increasing average temperatures, warmer winter minimum temperatures, changes in precipitation patterns and water shortages. Implemented in-field controls that have minimal effect on juvenile snails or snail eggs, combined with climate changes triggering opportunistic snail breeding, have rendered current IPM solutions ineffective [4]. Iron EDTA complex is only an attractive feed for mature snails and changing weather patterns made IPM solutions less effective and harder to implement, a more effective invertebrate-targeted biological agent is required. This invertebrate-targeting biological agent should be an attractive feed for both mature and juvenile snails, as well as an effective bio-ovicide.
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