Publications

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ability of canine termite detectors to locate live termites and discriminate them from non-termite material.dogs were trained to detect eastern subterranean termites, reticulitermes flavipes (kollar), using the united states customs method of scent detection dog training modified with a food reward. dogs were tested with various numbers of eastern subterranean termites placed in vented pvc containers. trained dogs were 95.93% accurate in finding > or = 40 eastern subterranean termite workers (positive indications) and incorrectly indicated the presence of termites in 2.69% of the containers without te ...200314503599
the motility symbiont of the termite gut flagellate caduceia versatilis is a member of the "synergistes" group.the flagellate caduceia versatilis in the gut of the termite cryptotermes cavifrons reportedly propels itself not by its own flagella but solely by the flagella of ectosymbiotic bacteria. previous microscopic observations have revealed that the motility symbionts are flagellated rods partially embedded in the host cell surface and that, together with a fusiform type of ectosymbiotic bacteria without flagella, they cover almost the entire surface. to identify these ectosymbionts, we conducted 16s ...200717675420
canaleparolina darwiniensis, gen. nov., sp. nov., and other pillotinaceous spirochetes from insects.we describe two new pillotinaceous spirochetes (canaleparolina darwiniensis, diplocalyx cryptotermitidis) and identify for the first time hollandina pterotermitidis from both the subterranean termite cryptotermes cavifrons and the wood-eating cockroach cryptocercus punctulatus based on morphometric analysis of transmission electron micrographic thin sections. c. darwiniensis, gen. nov., sp. nov., limited to near darwin, australia, invariably is present on the surface of the treponeme-studded tri ...200011334304
nesting ecology and cuticular microbial loads in dampwood (zootermopsis angusticollis) and drywood termites (incisitermes minor, i. schwarzi, cryptotermes cavifrons).termites form one-piece nests in wood that can vary in their moisture content and degree of decomposition, and thus microbial richness. to estimate the microbial load of nests and the potential risk they pose for colony members, we quantified the number of microbes in the nest and on the cuticle of the dampwood termite, zootermopsis angusticollis, and three drywood termites, incisitermes minor, i. schwarzi, and cryptotermes cavifrons. the number of colony forming units (cfus) cultured from nest ...200315841247
coevolution of symbiotic spirochete diversity in lower termites.the phylogenetic relationships of symbiotic spirochetes from five dry-wood feeding lower termites (cryptotermes cavifrons, heterotermes tenuis, kalotermes flavicollis, neotermes mona, and reticulitermes grassei) was compared to those described in previous reports. the 16s rdna bacterial genes were pcr-amplified from dna isolated from intestinal samples using a spirochete-selective primer, and the 16s amplicons were cloned into escherichia coli. sequences of the cloned inserts were then used to d ...200717661292
devescovinid trichomonad with axostyle-based rotary motor ("rubberneckia"): taxonomic assignment as caduceia versatilis sp. nov.an amitochondriate trichomonad cell of the family devescovinidae (class parabasalia), helped demonstrate the fluid model of lipoprotein cell membranes. this wood-ingesting symbiont in the hindgut of the dry wood-eating termite cryptotermes cavifrons is informally known to cell biologists as "rubberneckia". as the microtubular axo-style complex generates force causing clockwise movement of the entire anterior portion of the cell at the shear zone the protist displays "head" rotation. studies by p ...199911543196
cyclic co(2) release in cryptotermes cavifrons banks, incisitermes tabogae (snyder) and i. minor (hagen) (isoptera: kalotermitidae).co(2) release patterns of three drywood termite species were investigated using flow-through respirometry techniques. eight hours of real-time co(2) release data were recorded for pseudergates of cryptotermes cavifrons banks, incisitermes minor (hagen), and i. tabogae (snyder) at 20-40 degrees c. cyclic release of co(2) was observed in 20-90% of c. cavifrons, 70-100% of i. tabogae, and 87-100% of i. minor pseudergates. variability of the recordings (calculated as the coefficient of variability o ...200111423337
dna fluorescent stain accumulates in the golgi but not in the kinetosomes of amitochondriate protists.hindgut symbiotic trichomonads (uninucleate caduceia versatilis, and multinucleate stephanonympha sp. and snyderella tabogae) from the dry-wood-eating termite cryptotermes cavifrons (kalotermitidae) accumulate dapi (4,6diamidino-2-phenylindole) in the membranous sacs of the golgi complex. this form of golgi complex, typical of protists in the class parabasalia, is called a parabasal body. trichomonads contain organellar systems, mastigonts, that consist of four undulipodia (e.g. eukaryotic flage ...200010963333
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