Several species of invertebrate animals have been reported as intermediate or as paratenic hosts for the rat lungworm, Angiostrongylus cantonensis. Intermediate hosts which have been found naturally infected include: the land snails, Bradybaena stmMaris, Opeas javanicum, Macrochlamys resplendens, Achatina fulica, Pupina complanata, and Subulina octona; the slugs, Deroceras laeve, Vaginalus pleb...

Characterization of LpxC Inhibitors and Resistant Mutants by Daina Zeng Department of Biochemistry Duke University Date:_______________________ Approved: ___________________________ Pei Zhou, Supervisor ___________________________ Michael D. Been ___________________________ Kenneth N. Kreuzer ___________________________ Raphael H. Valdivia ___________________________ Robert A. Nicholas An abstr...

We present the results of deep, high-resolution, multi-band optical observations of the field of the young (∼ 5, 000 yrs) 16 ms X-ray pulsar PSR J0537−6910 performed with the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope (HST). Although a few new potential counterparts have been detected within or close to the revised Chandra X-ray error circle (≃ 1′′) of the pulsar, only ...

During its life, BeppoSAX observed several isolated pulsars, giving important contributions to the knowledge of the phenomenology and properties of the X-ray emission from this class of sources. In this paper I review the spectral and timing results obtained from BeppoSAX observations. In particular, results on three Crab-like (Crab, PSR B1509-58 and PSR B0540-69) and 3 millisecond pulsars (PSR...

A procedure established for the selective isolation of the species of Streptococcus responsible for rainbow trout streptococcosis in South Africa, consisted of the inoculation of samples into nutrient broth which had been supplemented with 100 micrograms/ml of nalidixic acid, 160 micrograms/ml of oxolinic acid or 200 micrograms/ml of sodium azide. After incubation, the sample was plated onto te...

Angiostrongylus cantonensis (Chen), a metastrongylid lungworm of rats, was recovered from the brain of a patient from Hawaii in 1961 (1) and since has become the principal suspect in the search for the etiologic agent of the eosinophilic meningitis seen on Pacific Islands (2-5). Since epidemiologic investigations (1,4,6) suggest that certain food animals may be involved in the transmission of t...

The freshwater crab Aegla platensis was used as a model to induce ovarian growth by adding different neuroregulators to a pellet food formulation. Added compounds were the dopaminergic inhibitor spiperone or the enkephalinergic inhibitor naloxone, both of them at a dose of 10(-8) mol/animal. Animals were fed on the enriched pellets twice a week. After 7 wk, the gonadosomatic index (GI) was calc...

A small collection of freshwater crabs from eastern Panamá revealed a new species of pseudothelphusid crab, Potamocarcinus darienensis n. sp., which is described and illustrated. The new species is characterized by an unusual arrangement of distal processes in the male first gonopod, in which the mesial lobe is folded in a latero-cephalic direction over the apex and the apex is broadened by a r...

A new genus and new species of free-living hymenosomatid crab, Aletheiana tenella, is described from Central Sulawesi, Indonesia. The two known Sulawesi hymenosomatid species, Cancrocaeca xenomorpha Ng, 1991, and Sulaplax ensifer Naruse, Ng & Guinot, 2008, are both from cave habitats. Aletheiana gen. nov. is most similar to Neorhynchoplax Sakai, 1938 (from freshwater and intertidal habitats in ...

The sublethal stress of the organophosphate insecticide chlorpyrifos was investigated in different tissues of the freshwater crab (Barytelphusa guerini). Crabs were exposed to 1/3 of LC50 concentrations for 7, 14, 21, and 28 days. After 28 days, they were released into fresh water and kept for 18 days for recovery. The study was conducted by estimating total proteins, amino acids, ammonia, urea...