Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Tree frog"”.
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The discovery and functional assessment of novel peptide QUB-2686 from Red-eyed tree frog, Agalychnis callidryas
Amphibian skin secretions contain a variety of bioactive components, which play vital roles in their survival and act as the first line to defence against microorganisms, parasites and predators. Novel peptides with pharmacological activities are constantly being discovered in amphibian skin …
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Assessing bioactivity of peptide QUB2003 from the skin secretion of the Waxy monkey tree frog Phyllomedusa sauvagii
Frog skin acts as a first line barrier of defence in amphibians, is important in their daily lives and is having significant implications in current biomedical science research. According to this research, amphibian skin secretion is a rich source of bioactive materials, including antimicrobial …
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Identification and functional study of the bioactive peptide QUB-2417 from the skin secretion of the tree frog, Phyllomedusa bicolor
… the skin secretion of Phyllomedusa bicolor, a tree frog from the Amazon rainforest, and was named QUB-2417. The peptide sequence was acquired by molecular cloning through constructing a cDNA library with isolated mRNA from skin secretion. Then the peptide was chemically synthesised by Solid …
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Identification and functional study of a bioactive peptide QUB-2007 from the skin secretion of the bicolour tree-frog Phyllomedusa bicolor
… a cDNA library with isolated mRNA from frog skin secretion. The peptide was synthesised by solid phase peptide synthesis, purified using reversed-phase high performance liquid chromatography and structurally-confirmed by MALDI-TOF MS. In broth microdilution assays, QUB-2007 showed …
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Identification and functional assessment of a bioactive peptide QUB-2984 from the skin secretion of the red-eyed tree frog, Agalychnis callidryas
… peptide derived from red-eyed leaf frog, Agalychnis callidryas, which provided ideas for further antibiotic research. Herein, the objectives included the isolation, identification, and bioactivity assessment of this bioactive peptide named QUB-2984. Agalychnis callidryas skin …
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Identification and functional study of a bioactive peptide QUB-2413 from the skin secretion of the Red-Eyed Tree Frog, Agalychnis callidryas
… secretion of the Central American Red-eyed Leaf Frog, Agalychnis callidryas. The peptide sequence was obtained by molecular cloning through constructing a cDNA library with isolated mRNA from frog skin secretion. The peptide was synthesised by solid phase peptide synthesiser, purified using …
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The effects of salinity on the cutaneous microbiome and pathogen infection on the Pacific Tree frog (Pseudacris regilla) in Monterey Bay, California, USA
… the cutaneous microbiome of the common Pacific Tree Frog (Pseudacris regilla) across a salinity gradient (0.05-30 ppt) at 10 sites within the reserve. I hypothesized that amphibians in higher saline environments would have lower Bd infection rates and different microbial communities compared to …
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Host Attraction and Host Selection in the Family Corethrellidae (Wood And Borkent) (Diptera)
… are known to be attracted to the mating calls of tree frogs. Field studies using the calls of nine species of frogs native to the SE USA confirmed prior findings that the call of the barking tree frog, Hyla gratiosa LeConte, is the most attractive call to sympatric Corethrella (Coquillett) from …
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Fecal Bacterial Communities as an Indicator of Trophic Interactions Among Anuran Larvae
… After enclosing small and large southern leopard frog tadpoles at two locations, size and location had significant effects on the composition of the fecal bacterial communities. Location had a significant effect on the composition of the fecal bacterial communities of green tree frog tadpoles. …
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Discovery of bioactive peptides from amphibian skin secretion
… peptides in special skin secretions produced by frogs have been considered to be one of the rich natural sources for developing new drugs in the future.<br/><br/>In this thesis, several bioactive peptides were identified from the skin secretions of frogs by using RP-HPLC and molecular cloning. …
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The Barrier Properties of the Skin of Aquatic and Semi-Aquatic Vertebrates
… using rainbow trout and the Australian green tree frog as models. The effects of water ion content and photoperiod on skin barrier properties and TJ proteins of trout are reported. Additionally, the effects of a deadly amphibian fungus, Batrachochytrium dendrobatidis, on skin TJ proteins of a …
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A bioactive peptide QUB3009 from the defensive skin secretion of the frog, Phyllomedusa tomopterna
The frog skins are biochemical, morphological and physiological organs, which play many significant roles in frog survival. Frog skin secretions contain bioactive components which include biogenic amines, alkaloids, peptides and proteins. Antimicrobial peptides from frog skin secretions display …
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Identification and bio-evaluation of an antimicrobial peptide from the skin secretion of Phyllomedusa tarsius
… was identified from the skin secretion of the tree frog from South America, Phyllomedusa tarsius. After mRNA was isolated from skin secretions, a cDNA library was established and subjected to molecular cloning technology. The sequence of an active peptide, QUB-3128 …
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Intertwined evolution of swimming, morphology and microhabitat in tree frogs from the subfamily Hylinae
… within multiple microhabitats for Neotropical tree frogs. The subfamily Hylinae includes 163 species; they have three main locomotion modes with a direct impact on species fitness: they jump, swim and climb. Convergences in morphotype and locomotion are primarily driven by microhabitat, but in …
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Size-structured competition and predation in red-eyed treefrog tadpoles
… size structure in the Neotropical leaf-breeding tree frog, Agalychnis callidryas. This species is a prolonged breeder such that multiple overlapping cohorts of differing sizes are common. Specifically, we examine size-specific intraspecific competition between A. callidryas tadpoles and then …
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A bioactive peptide, QUB-2048, from the defensive skin secretion of Phyllomedusa tomopterna
… from such a library of the tiger-legged monkey tree frog, Phyllomedusa tomopterna, and named QUB-2048. Subsequently, the predicted mature peptide, named QUB-2048 was isolated and identified by reverse-phase HPLC and MALDI-TOF mass spectrometry, and then chemically-synthesised by solid-phase …
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A Comparison of Current Anuran Monitoring Methods with Emphasis on the Accuracy of Automatic Vocalization Detection Software
… twenty years, including PVC pipe arrays used for tree frog capture and Automated Digital Recording Systems (ADRS) used to remotely monitor calling activity. In addition to ADRS, machine-learning computer software, automated vocalization recognition software (AVRS), has been developed to …
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Novel bioactive peptides from the defensive skin secretion of Phyllomedusinae frogs
… contact. The skin secretion of phyllomedusinae tree frog contains massive quantities of AMPs, belonging to the dermaseptin superfamily, which exhibit remarkable antimicrobial activity against Grampositive bacteria, Gram-negative bacteria and fungi. <br/>In this thesis, we employed “shot-gun” …
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The isolation, structure, and membrane interactions of biologically active peptides.
… biologically active peptides. The southern brown tree frog Litoria ewingi occupies areas of the southeastern coast of Australia and Tasmania. Over a twelve month period, the peptide skin profile of a population of L. ewingii from Penola (South Australia) was determined using a combination of …