Hannemania

Hannemania

chigger mites infesting amphibians especially frogs. Cause red spots and vesicles.
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Hannemania mite larvae are known to infest a variety of amphibian species but no data exist for characteristics of Hannemania parasitizing the cliff chirping frog, Eleutherodactylus marnockii.
Larval Hannemania mites (Acari: Leeuwenhoekiidae) burrow through the skin of salamanders and anurans and encapsulate within the stratum spongiosum of the dermis (Hyland 1950; 1961; Duszynski & Jones 1973; Grover et al.
There are varying degrees of host taxa specificity for Hannemania mite larvae.
Several ecological costs have been established for individuals that are heavily parasitized by Hannemania mites.
The encroachment of the dermis, patterns of host specificity, and costs associated with being parasitized by Hannemania mites suggests that amphibians and mites may coevolve in interesting ways.
Multiple comparison procedures (Tukey, Ryan's, and Student-Newman-Keuls) were used to evaluate what areas of the body had similar concentrations of Hannemania mites.
Ewing (1931) emphasized that the genus Endotrombicula is closely related to the genus Hannemania Oudemans, 1911 which includes 27 species that infest frogs and toads of the New World (Radford, 1954b; Gould, 1956; Hoffmann, 1969, 1990; de Alzuet and Mauri, 1987).
However, it may resemble that of the closely related species Hannemania dunni Sambon, 1928 and H.
The closely related parasite genus Hannemania is supposed to include species with low species specificity.
Similarly, great differences in prevalence of the same Hannemania species among neighboring localities were described in Pseudacris clarkii (8-57%) by McAllister (1991) and in Hyla arenicolor (0-37%) by Duszynski and Jones (1973).
In contrast, most larval mites of the genus Hannemania leave Californian frogs during the summer under natural conditions (Welbourn and Loomis, 1975).
Blood smears were negative for hematozoa, the feces did not contain coccidia, and none of the salamanders were infested with Hannemania.