Results 11 to 20 of about 238 (140)

Divergence in host–parasite interactions during the cane toad's invasion of Australia

Ecology and Evolution, 2022
Coevolutionary host–parasite “arms races” can be disrupted by new evolutionary forces imposed by biological invasions, affecting both host and parasite densities, as well as their traits.
Lia Schlippe Justicia, Martin Mayer, Richard Shine, Cathy Shilton, Gregory P. Brown   +4 more
doaj   +2 more sources

Molecular phylogeny of the family Rhabdiasidae (Nematoda: Rhabditida), with morphology, genetic characterization and mitochondrial genomes of Rhabdias kafunata and R. bufonis [PDF]

Parasites & Vectors
Background The family Rhabdiasidae (Nematoda: Rhabditida) is a globally distributed group of nematode parasites, with over 110 species parasitic mainly in amphibians and reptiles.
Jia-Lu Zeng, Hui-Xia Chen, Xue-Feng Ni, Jia-Yi Kang, Liang Li   +4 more
doaj   +2 more sources

Host–parasite interactions during a biological invasion: The fate of lungworms (Rhabdias spp.) inside native and novel anuran hosts [PDF]

International Journal for Parasitology: Parasites and Wildlife, 2015
The cane toad invasion in Australia provides a robust opportunity to clarify the infection process in co-evolved versus de novo host–parasite interactions.
Felicity B.L. Nelson, Gregory P. Brown, Catherine Shilton, Richard Shine   +3 more
doaj   +2 more sources

Infection patterns of helminths in Norops brasiliensis (Squamata, Dactyloidae) from a humid forest, Northeastern Brazil and their relation with body mass, sex, host size, and season [PDF]

Helminthologia, 2019
Climatic and ecological factors can influence the parasite load of a host. Variation in rainfall, body size, and sex of the hosts may be related to the abundance of parasites.
Amorim D. M., Ávila R. W.
doaj   +2 more sources

Comparison of Corticosterone Concentrations in Dermal Secretions and Urine in Free-Ranging Marine Toads (Rhinella marina) in Human Care. [PDF]

Vet Med Int, 2023
Corticosterone concentrations have been measured in amphibians by collecting blood or urine samples. However, blood sampling is invasive, and urine can be difficult to collect. A novel method of swabbing the skin of an amphibian has been utilized in numerous species but has not been verified in marine toads (Rhinella marina).
Clarke E, Heugten KA, Tollefson TN, Ridgley FN, Smith D, Brown JL, Scott H, Minter LJ.   +7 more
europepmc   +2 more sources

Survival of the feces: Does a nematode lungworm adaptively manipulate the behavior of its cane toad host? [PDF]

Ecol Evol, 2018
Parasites can enhance their fitness by modifying the behavior of their hosts. Using antihelminthic drugs to experimentally remove lungworm infection from cane toads, we were able to show behavioral modifications in the toads that enhanced rather than decreased parasite fitness.
Finnerty PB, Shine R, Brown GP.
europepmc   +2 more sources

Ophthalmic findings and parameters in Western tiger salamanders (Ambystoma mavortium) from northern Colorado. [PDF]

Vet Ophthalmol
Abstract Objective The aim of this study was to document ophthalmic examination findings and provide reference values for ocular examinations and diagnostics in clinically normal Western tiger salamanders (Ambystoma mavortium) and to evaluate the mydriatic effect of a topical rocuronium bromide and identify any adverse effects.
Kansman KJ, Sadar MJ, Daniels JB, Klaphake E, de Linde Henriksen M.   +4 more
europepmc   +2 more sources

Comparative reconstruction of the predatory feeding structures of the polyphenic nematode Pristionchus pacificus

Evolution &Development, Volume 24, Issue 1-2, Page 16-36, March 2022., 2022
The novel morphology of a nematode model for the developmental genetics of polyphenism (Pristionchus pacificus) was reconstructed at the level of individual cells. A comparative study of this anatomical map revealed that the dimorphic, predatory morphology of P.
Clayton J. Harry, Sonia M. Messar, Erik J. Ragsdale   +2 more
wiley   +1 more source

Differences in morphology and in composition and release of parotoid gland secretion in introduced cane toads (Rhinella marina) from established populations in Florida, USA

Ecology and Evolution, Volume 11, Issue 2, Page 1013-1022, January 2021., 2021
Predators in the United States have evolved in sympatry with native bufonids. Compared to Australia, little attention has been paid to gland morphology or toxicity of invasive cane toads in Florida. Although we found no effect of locality on gland morphology or poison composition, our results indicate that northern FL populations show an increased ...
Steven T. Gardner, Megen Kepas, Casey R. Simons, Logan M. Horne, Alan H. Savitzky, Mary T. Mendonça   +5 more
wiley   +1 more source

Helminth fauna of Norops fuscoauratus (D’Orbigny, 1837) (Squamata: Dactyloidae) in the Atlantic Forest, northeastern Brazil

Brazilian Journal of Biology, 2021
The composition of macro endoparasites associated with the lizard Norops fuscoauratus (Squamata) was analysed in two localities in the Atlantic Forest on the northeast of Brazil between December 2012 and July 2015. 74 specimens of N.
I. H. M. P. Campos, C. N. Oliveira, J. V. Araújo-Neto, S. V. Brito, M. C. Guarnieri, S. C. Ribeiro   +5 more
doaj   +1 more source