Showing papers on "Bufo melanostictus published in 2004"
TL;DR: The pentastome Raillietiella indica was collected from the introduced toad B. marinus in Oahu, Hawaii, U.S.A. and represents a new host record for this parasite, previously only recorded from Bufo melanostictus.
Abstract: The pentastome Raillietiella indica was col- lected from the introduced toad Bufo marinus in Oahu, Hawaii, U.S.A. The parasite was identified as R. indica from similarities in morphology of the hooks, buccal cadre, and male copulatory spicule. This represents a new host record for this parasite, previously only recorded from Bufo melanostictus. This also represents a new locality record because this parasite has only been reported previously in India, Burma, and Taiwan. This is the third record of B. marinus as a host for parasites in Hawaii.
19 citations
TL;DR: The present study revealed the existence of a single class of specific nuclear receptor(s) in the liver nuclei of mature tropical toad, Bufo melanostictus, with a dissociation constant of (3.7 ± 0.9) × 10-10 molar and maximum binding capacity of 0.074 d 0.013 pmol/mg DNA.
Abstract: Thyroid hormones exert a major role in growth and differentiation of almost all types of tissues in animals, particularly in amphibian metamorphosis, through its specific nuclear receptor activation followed by gene expression. However, its function in mature tropical amphibians is less studied. The present study revealed the existence of a single class of specific nuclear receptor(s) in the liver nuclei of mature tropical toad, Bufo melanostictus, with a dissociation constant of (3.7 ′ 0.9) x 10 - 1 0 molar and maximum binding capacity of 0.074 ′ 0.013 pmol/mg DNA. The percentage of relative binding affinities for the specific nuclear L-T3 binding site in the liver nuclei of toad were L-triiodothyronine (L-T3) > triiodothyroacetic acid (TRIAC) > L-thyroxine (L-T4) = tetraiodothyroacetic acid (TETRAC) > 3,3',5'-triiodothyronine (r-T3) > Diiodothyrtonine (L-T2) (100 > 75 > 19.4 = 19.4 > 3.7 > 0.39) and the relative ED 5 0 values (in nanomolar) were 0.33 < 0.44 < 1.7 = 1.7 < 9 < 83.