Feeding Impact and Bionomics of the Grasshopper Cornops aquaticum on the Water Hyacinth Eichhornia crassipes in Central Amazonian Floodplains [PDF]
Studies on Neotropical Fauna and Environment, 2003 Cornops aquaticum (juveniles, adults) was monitored on 5 m 2 of floating Eichhornia crassipes in a whitewater flood-plain near Manaus during one year. Its abundance and biomass varied as a consequence of changing host plant densities caused by the flood pulse of the Solim[otilde]es/Amazon River. During rising waters C.
Joachim Adis
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Spatial population structure: patterns of adaptation in populations of the water hyacinth grasshopper Cornops aquaticum (Bruner 1906) [PDF]
Bulletin of Entomological Research, 2021 AbstractThe water hyacinth grasshopper Cornops aquaticum (Bruner 1906) constitutes an appropriate model to assess phenotypic and karyotypic variability in the context of differentiation and adaptation of insect populations because it occurs over a wide latitudinal range.
Pablo C. Colombo +3 more
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Polymerase chain reaction primers for microsatellite loci in the semi‐aquatic grasshopper, Cornops aquaticum [PDF]
Molecular Ecology Notes, 2005 AbstractThe semi‐aquatic grasshopper Cornops aquaticum is native to South America, with a distribution as far south as the Argentinian pampas and as far north as the Gulf of Mexico. This study reports the characterization of nine microsatellite loci for this species. To our knowledge, no molecular studies have been conducted on C. aquaticum, therefore,
BREDE, EDWARD G, BEEBEE, TREVOR J. C
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What Determines the Number of Juvenile Instars in the Tropical Grasshopper Cornops aquaticum (Leptysminae: Acrididae: Orthoptera)? [PDF]
Studies on Neotropical Fauna and Environment, 2004 Cornops aquaticum (Bruner) is host specific on Eichhornia spp. and Pontederia spp. (Pontederiacae). Its present distribution ranges from Mexico to Argentina. The number of juvenile instars (5-7) apparently mirrors the photoperiod and temperature pulses of different climatical conditions in the respective geographical regions. Based on life-history data,
Adis, J. +5 more
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What is responsible for the variance in life history traits of a South American semi‐aquatic grasshopper (Cornops aquaticum)? A test of three possible hypotheses [PDF]
Studies on Neotropical Fauna and Environment, 2007 The semi‐aquatic grasshopper Cornops aquaticum (Bruner, 1906) is native to South America, with a distribution from the Argentinian pampas to the Gulf of Mexico, and is currently being proposed as a biological control agent for the invasive water hyacinth (Eichhornia crassipes) in South Africa.
Brede, E., Adis, J., Schneider, P.
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Nutrient-mediated effects on Cornops aquaticum Brüner (Orthoptera: Acrididae), a potential biological control agent of water hyacinth, Eichhornia crassipes (Mart.) Solms (Pontederiaceae) [PDF]
Biological Control, 2013 Abstract Host plant quality for phytophagous insects, of which nitrogen is one of the most crucial components, is highly variable and can be a major determinant of their performance. This has implications in insect-weed biological control systems where host plant quality can affect establishment, survival and population growth rates of the biocontrol
Bownes, Angela +2 more
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AbstractHost specificity determination of weed biocontrol agents has historically relied on evidence generated through quarantine trials in the region of introduction. These trials could give ‘false positive’ results due to a maximum type I error probability, and where possible, more research under field conditions should be conducted in the region of ...
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Abstract The water-hyacinth grasshopper, Cornops aquaticum (Orthoptera: Acrididae), shows a clinal variation for 3 Robertsonian translocation (centric fusion) polymorphisms in the southern extreme of its wide geographical distribution. It is a Neotropical semiaquatic grasshopper that lives, feeds, and lays eggs exclusively on floating ...
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