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A field population of Melanoplus sanguinipes (Fab.) (Orthoptera: Acrididae) and its parasites

A field population of Melanoplus sanguinipes (Fab.) (Orthoptera: Acrididae) and its parasites

Can. J. Zool 43(1): 179-201

A 10-year larithmic survey of Melanoplus sanguinipes and its parasites revealed" that the most hosts were infected by the mermithids (mainly Mermis nigrescens but probably also Agamermis decaudat) in early September, that the greatest number of parasites occurred in late August, and that the seasona lindices of mermithid parasitism exceeded or equalled that of any other kind of parasite even when these indices were divided by a factor of 2 or 3 to allow for the 4-6 weeks that the worms are in their hosts. Contagious distribution of the worms was related to heavier parasitism at two sites which presumably had damper conditions. A positive correlation was found between the number of hosts with mermithids and rain in July.

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Accession: 014311781

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DOI: 10.1139/z65-017

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