Litoria gracilenta (Anura : Hylidae) and related species in New Guinea

2004 ◽  
Vol 52 (2) ◽  
pp. 191 ◽  
Author(s):  
J. I. Menzies ◽  
M. J. Tyler
Keyword(s):  
Statistical Analysis ◽  
Related Species ◽  
New Guinea ◽  
Large Collection ◽  
Tree Frogs

We examined a large collection (n = 132) of tree frogs, hitherto identified as Litoria gracilenta, from various localities in New Guinea and compared them with Litoria gracilenta from Queensland and with the recently described Litoria elkeae from far west New Guinea. We found that the frogs in question were neither L. gracilenta nor L. elkeae but comprised two distinct taxa described herein as new species.We call attention to the problems of performing statistical analysis on measurements of soft-bodied organisms and consider that the conclusions reached in this analysis are both conservative and realistic.

Revision of Coronostrongylus (Nematoda : Strongyloidea) parasitic in the stomachs of macropodid marsupials

2002 ◽  
Vol 16 (6) ◽  
pp. 893 ◽  
Author(s):  
I. Beveridge
Keyword(s):  
Papua New Guinea ◽  
Host Species ◽  
Related Species ◽  
New Guinea ◽  
Nematode Species ◽  
Closely Related Species ◽  
Nematode Genus ◽  
Eastern Australia ◽  
Wide Range ◽  
Species Occurrences

The monotypic nematode genus Coronostrongylus Johnston & Mawson, 1939 from the stomachs of macropodid marsupials was reviewed and was found to consist of a least seven closely related species. Coronostrongylus coronatus Johnston & Mawson, 1939 is found most commonly in Macropus rufogriseus, but occurs occasionally in M. dorsalis, M. parryi and Petrogale inornata. Coronostrongylus johnsoni, sp. nov. is most commonly found in M. dorsalis, but occurs also in M. rufogriseus, M. parma, Thylogale stigmatica, Petrogale godmani and P. brachyotis. Coronostrongylus barkeri, sp. nov. is most prevalent in Onychogalea unguifera, but occurs also in M. rufus, M. robustus and P. brachyotis. Coronostrongylus closei, sp. nov. is restricted to Petrogale persephone. Coronostrongylus sharmani, sp. nov. occurs only in rock wallabies from eastern Australia: P.�coenensis, P. godmani and P. mareeba; C. spratti, sp. nov. occurs in P. inornata and P. assimilis. Coronostrongylus spearei, sp. nov. is restricted to Papua New Guinea where it is found in Dorcopsulus vanhearni, Dorcopsis hageni and D. muelleri. Although all of the nematode species occur in one principal host species or a series of closely related host species, occurrences in geographically disjunct areas and in phylogenetically distant hosts are features of C. coronatus, C. barkeri, sp. nov. and C. johnsoni, sp. nov. The occurrence of seven closely related nematode species found in a wide range of macropodid host species is more readily accounted for by a hypothesis involving multiple colonisations of hosts than by the hypothesis of co-speciation.

Aulacaspis (Homoptera: Diaspididae) on sugarcane and other Saccharum spp. (Gramineae)

1993 ◽  
Vol 83 (4) ◽  
pp. 649-654
Author(s):  
D.J. Williams ◽  
Gillian W. Watson
Keyword(s):  
Papua New Guinea ◽  
Related Species ◽  
New Guinea ◽  
Scale Insect ◽  
Saccharum Officinarum ◽  
Washington Dc ◽  
Closely Related Species ◽  
Saccharum Spp ◽  
The World ◽  
Potential Pest

AbstractA brief review is given of species of Coccoidea found on sugarcane (Saccharum officinarum) in the island of New Guinea. A key and comments on all the species of Aulacaspis that have been recorded on sugarcane and other Saccharum spp. throughout the world is presented. The scale insect Aulacaspis neoguineensis Williams & Watson sp. n. is described from specimens on sugarcane intercepted at Washington, DC, USA from Papua New Guinea because it is a potential pest of sugarcane. It is compared with A. madiunensis (Zehntner), a closely-related species often injurious to sugarcane in southern Asia, Australia and Africa.

Leptogium loriforme P. M. Jørg. & Kashiw., a new hairy species from Papua New Guinea

2008 ◽  
Vol 40 (2) ◽  
pp. 123-125 ◽  
Author(s):  
Per M. JØRGENSEN ◽  
H. KASHIWADANI
Keyword(s):  
New Species ◽  
Papua New Guinea ◽  
Related Species ◽  
New Guinea ◽  
Se Asia ◽  
A New Species

Abstract:A new species of the Leptogium trichophorum group is described from Mt. Albert Edward in Papua New Guinea. A key to the related species, which are all found in SE Asia, is given. The new species appears to be rather local, and may prove to be endemic.

A Comparison of the Antimicrobial Skin Peptides of the New Guinea Tree Frog (Litoria genimaculata) and the Fringed Tree Frog (Litoria eucnemis)

2002 ◽  
Vol 55 (9) ◽  
pp. 605 ◽  
Author(s):  
C. S. Brinkworth ◽  
J. H. Bowie ◽  
M. J. Tyler ◽  
J. C. Wallace
Keyword(s):  
New Guinea ◽  
Hinge Region ◽  
The Other ◽  
Tree Frog ◽  
Northern Australia ◽  
Skin Secretion ◽  
Basic Peptide ◽  
Tree Frogs ◽  
Antibiotic Peptide ◽  
Antibiotic Peptides

The Fringed Tree Frog (Litoria eucnemis) is closely related to the Tree Frog Litoria genimaculata. Both species are found in northern Australia and New Guinea. We have reported that the major antibiotic peptide of L. genimaculata is maculatin 1.1 which has the sequence GLFGVLAKVAAHVVPAIEHF-NH2, and that this basic peptide is different from the hinged caerin 1 peptides (e.g. caerin 1.1, from Litoria splendida and other green tree frogs, which has the sequence GLLSVLGSVAKHVLPHVVPVIAEHL-NH2), in that it lacks four residues of the central hinge region of a caerin 1. Litoria eucnemis has three major host defence peptides, two of these are maculatins (e.g. maculatin 1.3; GLLGLLGSVVSHVVPAIVGHF-NH2) which are related in sequence to that of maculatin 1. The other antibiotic peptide is caerin 1.11 (GLLGAMFKVASKVLPHVVPAITEHF-NH2) a peptide related to the caerin 1 peptides of the green tree frogs of Australia. L. eucnemis is the only species of the Litoria genus (that we have studied) which contains both maculatin and caerin peptides in its skin secretion. The three antibiotic peptides of Litoria eucnemis are significantly less active than maculatin 1.1 and other caerins 1 isolated from anurans of the genus Litoria so far studied.

Metaphycus baruensis sp. n. (Hymenoptera: Encyrtidae) parasitic in green scales, Coccus spp. (Hemiptera: Coccidae), on coffee in kenya

1988 ◽  
Vol 78 (1) ◽  
pp. 131-134 ◽  
Author(s):  
J. S. Noyes
Keyword(s):  
Papua New Guinea ◽  
Related Species ◽  
New Guinea ◽  
Metaphycus Baruensis

AbstractMetaphycus baruensis sp. n., an encyrtid parasitoid of Coccus spp. on coffee in Kenya, is described and compared with related species. The parasitoid is to be introduced into Papua New Guinea in an attempt to control green scales which are serious pests of coffee there.

scholarly journals Mechanistic constraints on diversity in human V(D)J recombination.

1996 ◽  
Vol 16 (1) ◽  
pp. 258-269 ◽  
Author(s):  
G H Gauss ◽  
M R Lieber
Keyword(s):  
Statistical Analysis ◽  
Base Composition ◽  
Human Cells ◽  
Full Length ◽  
Terminal Deoxynucleotidyl Transferase ◽  
Inverted Repeats ◽  
Stacking Interactions ◽  
Large Collection ◽  
Significant Frequency ◽  
End Sequences

We have analyzed a large collection of coding junctions generated in human cells. From this analysis, we infer the following about nucleotide processing at coding joints in human cells. First, the pattern of nucleotide loss from coding ends is influenced by the base composition of the coding end sequences. AT-rich sequences suffer greater loss than do GC-rich sequences. Second, inverted repeats can occur at ends that have undergone nucleolytic processing. Previously, inverted repeats (P nucleotides) have been noted only at coding ends that have not undergone nucleolytic processing, this observation being the basis for a model in which a hairpin intermediate is formed at the coding ends early in the reaction. Here, inverted repeats at processed coding ends were present at approximately twice the number of junctions as P nucleotide additions. Terminal deoxynucleotidyl transferase (TdT) is required for the appearance of the inverted repeats at processed ends (but not full-length coding ends), yet statistical analysis shows that it is virtually impossible for the inverted repeats to be polymerized by TdT. Third, TdT additions are not random. It has long been noted that TdT has a G utilization preference. In addition to the G preference, we find that TdT adds strings of purines or strings of pyrimidines at a highly significant frequency. This tendency suggests that nucleotide-stacking interactions affect TdT polymerization. All three of these features place constraints on the extent of junctional diversity in human V(D)J recombination.

Thaleropia, a New Genus for Metrosideros queenslandica (Myrtaceae) and its Allies

1993 ◽  
Vol 6 (3) ◽  
pp. 251 ◽  
Author(s):  
PG Wilson
Keyword(s):  
Related Species ◽  
New Genus ◽  
Taxonomic Status ◽  
New Guinea ◽  
New Combinations ◽  
Current Classification ◽  
Anatomical Characters

The taxonomic status of Metrosideros queenslandica, and related species from New Guinea, is reassessed on the basis of fundamental morphological and anatomical characters and these species are found to be more closely allied to Tristanin sens. str. than to Metrosideros sens. lat. The current classification of this group of species as Metrosideros subg. Mearnsia sect. Adnatae J. W. Dawson is rejected and a new genus, Thaleropia, is described and the new combinations T. queeirslandica, T. iteophylla and T. hypargyrea made.

Digital Microstructure in Ecologically Diverse Sympatric Microhylid Frogs, Genera Cophixalus and Sphenophryne (Amphibia, Anura), From Papua-New-Guinea

1986 ◽  
Vol 34 (2) ◽  
pp. 135 ◽  
Author(s):  
DM Green ◽  
MP Simon
Keyword(s):  
Cell Surface ◽  
Papua New Guinea ◽  
Functional Significance ◽  
New Guinea ◽  
Cell Types ◽  
Sympatric Species ◽  
Tree Frogs ◽  
Evolutionary Lineages

The extent of development of digital adhesive toe-pads in sympatric species of microhylid frogs, Cophixalus and Sphenophryne, correlates with the degree of arboreality exhibited by the species. The same basic structures and cell types are found in the toe-pads of these microhylid frogs as are found in other arboreal and semi- arboreal frogs of many diverse evolutionary lineages. A variety of types of cell surface, with unknown functional significance but potential systematic use, are found on the feet of these frogs. Allometric increase in adhesive-pad area in larger species is by widening of the toe-pad, as opposed to acquisition of accessory pads as in some hylid tree frogs.

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