Exchange of water between a mite, Laelaps echidnina, and the surrounding air under equilibrium conditions

Wharton, G. W.; Devine, T. L.

doi:10.1016/0022-1910(68)90023-1

Cited by 53 publications

(14 citation statements)

References 14 publications

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“…In general, terrestrial arthropods gain water in several ways, through: drinking, metabolic conversion of nutrients, cuticular absorption and specialized structures such as papillae, bladders (F_xtney, 1977) or vesicles that can use either salts or specialized cuticular mechanisms that permit capillary condensation to take up water in unsaturated air (Diamond and Bossart, 1967;Kahl and Kniille, 1968;Wharton and Devine, 1968).…”

Section: Discussionmentioning

confidence: 99%

The potential role of phoresy in the evolution of parasitism: radiolabelling (tritium) evidence from an astigmatid mite

Houck

Cohen

1995

Exp Appl Acarol

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Using tritium as a radiolabel marker of interspecific fluid transfer, we present experimental evidence that the heteromorphie deutonymph of an astigmatid mite (Hemisarcoptes cooremani) acquires materials (at least water) directly from the haemolymph of its beetle host (Chilocorus cacti). This acquisition is above that obtained from atmospheric vapour. The material acquired from the host is necessary for the completion of the ontogeny of H. cooremani and is likely procured through the action of the caudal ventral suckers of the heteromorphic dentonymph (hypopus). On gross morphological criteria, this mite-beetle relationship was previously defined as phoretic (for dispersal). Scanning electron photomicrographs of the physical relationship between the hypopodes and the beetles shed light on the 'parasitic' nature of the hypopus ofH. cooremani. Our findings are discussed in terms of the evolution of parasitism from a free-living astignmtid form. This transition into parasitism is facilitated by the heteromorphie hypopus and represents a classic 'wolf-insheep's-clothing' strategy. The heteromorph retains the characteristic phoretic morphology while exploiting the host in transit.

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Section: Discussionmentioning

confidence: 99%

The potential role of phoresy in the evolution of parasitism: radiolabelling (tritium) evidence from an astigmatid mite

Houck

Cohen

1995

Exp Appl Acarol

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“…Sorption is apparently measurable at all humidities above 0% and increases markedly at higher humidities ( > 70%) (see Wharton and Devine 1968). Unfortunately, the amount and rate of atmospheric water vapor exchange occurring at various humidities in Eleodes were not determined.…”

Section: Discussionmentioning

confidence: 99%

“…Marcuzzi and Santoro (1959) examined the water exchange of Tenebrio molitor larvae in the laboratory at 85% and 100% RH using tritiated water, while data on tritium uptake and elimination in laboratory confined crickets, Acheta domesticus, were reported by Van Hook and Deal (1973). Tritiated water has also been used to estimate exchange of water between a mite and surrounding air in the 'Manuscript received 2 February 1976;accepted 12 July 1976. laboratory Devine 1968, Devine andWharton 1973).…”

Section: Introductionmentioning

confidence: 99%

Tritium‐Determined Water Flux in The Free‐Roaming Desert Tenebrionid Beetle, Eleodes Armata

Bohm¹,

Hadley²

1977

Ecology

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Tritated H2O was used to measure H2O exchange in field and laboratory populations of the desert tenebrionid beetle, Eleodes armata. Free—roaming individuals were monitored in natural desert enclosures. Mean total body H2O determined istopically (TBWi) was 74.5% compared to 65.9% measured gravimetrically. Water loss rates determined istopically (WLRi) for beetles decreased as the summer progressed (early summer, .079 ml ° g—1 ° day1; late summer, .062 ml ° g—1 ° day—1). The biological half—life of tritium (T½b) for these respective groups was 6.4 and 8.2 days. Significantly lower WLRi (.032 ml ° g—1 ° day—1) were obtained for noncaptive winter beetles. WLRi and T½b values for beetle confined to artificial burrows (no food or water) were not significantly different from values for free—roaming beetles during either season. WLRi for fed and hydrated beetles maintained in the laboratory under simulated summer conditions were four times higher than WLRi for food and water—deprived beetles. Tests conducted on similar groups under simulated winter conditions produced no significant differences in WLRi or T@2b. These data are discussed in reference to biotic and physical factors affecting H2O flux, limitations of the isotope technique and the research design employed, and compared to published data on other desert species.

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“…The efflux of HTO was used to calculate transpiration rate constants since HTO loss is proportional to actual water loss (Arlian, 1979;Arlian & Staiger, 1979;Arlian, 1972;Wharton & Devine, 1968).…”

Section: Injection Studiesmentioning

confidence: 99%

Comparative Toxicity of Selected Aviation Fuels as Measured by Insect Bioassay

Bombick¹,

Arlian²,

Livingston³

1982

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NOTICESWhen US Cm. erninelit drti n~lg , spec jficat~ions, Ol other do:t aýre used for any' pLrpo0se other than a definitely related Government procuremnent operationo, the (jovermnoult thercnhý biicuPs no responisibility nor iny obligation whaitsoever, and the fa-ct that the Government na1ýy hanve fornmula ed, fturn ished, or in ,my waiy supplied the said dra1wings, specifications, or other data, is not to be re.garded by imlpllication or otherwise, as in any manner licensing the holder or any other person or corporation, or conveyag a-m rights or permission to manufacture, use, or sell any patented 1nenio thtmy in any waýy be, rein tedi thereto. DISTRIBUTION STATEMENT (of this Report)Approved for public release; distribution unlimited. The acute toxicity of JP-4, JP-8 and JP-9 fuels was evaluated for several terrestrial insects by contact exposure. JP-8 was the most toxic fuel to most of the insect species. Shale derived fuels were more toxic than their petroleum derived counterparts, however, species response varied with each type fuel. The order of decreasing susceptibility to petroleum derived JP-4 was earwigsrice weevilsbflour bettles, lady beetles'ptenebrionid beetlegcockroaches.

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Exchange of water between a mite, Laelaps echidnina, and the surrounding air under equilibrium conditions

Cited by 53 publications

References 14 publications

The potential role of phoresy in the evolution of parasitism: radiolabelling (tritium) evidence from an astigmatid mite

The potential role of phoresy in the evolution of parasitism: radiolabelling (tritium) evidence from an astigmatid mite

Tritium‐Determined Water Flux in The Free‐Roaming Desert Tenebrionid Beetle, Eleodes Armata

Comparative Toxicity of Selected Aviation Fuels as Measured by Insect Bioassay

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