| 1. |
- Johanson, Kjell Arne, 1966-, et al.
(författare)
-
New Caledonia's Trichoptera—present status of knowledge
- 2019
-
Ingår i: Zoosymposia. - Mapress : Magnolia Press. - 1178-9905 .- 1178-9913. ; 14, s. 87-102
-
Tidskriftsartikel (refereegranskat)abstract
- The first Trichoptera recorded from New Caledonia were four species described by Kimmins in 1953, each in anew endemic genus. The diversity was increased to eight species with the publication by Sykora in 1967 of threenew species in two new genera and a fourth species in a previously established genus. Today, 239 valid species areknown from the country, representing 20 genera in 10 families. Analysis of published records for some 32,000Trichoptera specimens collected from 291 localities shows that the highest species diversity is in the SE part of theGrande Terre, and that species diversity is greatest at lower altitudes, i.e. 0–200 meters above sea level. We also seethat the three most frequently collected families (85% of the individuals) in the sampled material are Hydroptilidae(35%), followed by Hydropsychidae (27%), and Leptoceridae (22%). Phylogenetic analyses have demonstratedthat the first species to occupy the island and the earliest radiations took place on areas covered by ultrabasicsubstrate, which is poor in nutrients and rich in certain toxic heavy metals.
|
|
| 2. |
- Johanson, Kjell Arne, et al.
(författare)
-
The Trichoptera of Vanuatu
- 2011
-
Ingår i: Deutsche Entomologische Zeitschrift. - : Wiley. - 0012-0073 .- 1435-1951. ; 58:2, s. 279-320
-
Tidskriftsartikel (refereegranskat)abstract
- The Trichoptera diversity of Vanuatu is reviewed based on earlier and recently collected material. Altogether, 20 species in 12 genera and 8 families are now recognized for the country, of which 12 species are described as new to science in the families Hydrobiosidae (1 species), Hydroptilidae (5 species), Philopotamidae (3 species) and Leptoceridae (3 species). The previously known species from Vanuatu are re-described with illustrations and photographs. A key to adults of the Trichoptera fauna of Vanuatu is provided.
|
|
| 3. |
- Johnson, Toby, et al.
(författare)
-
Blood Pressure Loci Identified with a Gene-Centric Array.
- 2011
-
Ingår i: American Journal of Human Genetics. - : Elsevier BV. - 1537-6605 .- 0002-9297. ; 89:6, s. 688-700
-
Tidskriftsartikel (refereegranskat)abstract
- Raised blood pressure (BP) is a major risk factor for cardiovascular disease. Previous studies have identified 47 distinct genetic variants robustly associated with BP, but collectively these explain only a few percent of the heritability for BP phenotypes. To find additional BP loci, we used a bespoke gene-centric array to genotype an independent discovery sample of 25,118 individuals that combined hypertensive case-control and general population samples. We followed up four SNPs associated with BP at our p < 8.56× 10(-7) study-specific significance threshold and six suggestively associated SNPs in a further 59,349 individuals. We identified and replicated a SNP at LSP1/TNNT3, a SNP at MTHFR-NPPB independent (r(2) = 0.33) of previous reports, and replicated SNPs at AGT and ATP2B1 reported previously. An analysis of combined discovery and follow-up data identified SNPs significantly associated with BP at p < 8.56× 10(-7) at four further loci (NPR3, HFE, NOS3, and SOX6). The high number of discoveries made with modest genotyping effort can be attributed to using a large-scale yet targeted genotyping array and to the development of a weighting scheme that maximized power when meta-analyzing results from samples ascertained with extreme phenotypes, in combination with results from nonascertained or population samples. Chromatin immunoprecipitation and transcript expression data highlight potential gene regulatory mechanisms at the MTHFR and NOS3 loci. These results provide candidates for further study to help dissect mechanisms affecting BP and highlight the utility of studying SNPs and samples that are independent of those studied previously even when the sample size is smaller than that in previous studies.
|
|
| 4. |
- Wells, Alice, et al.
(författare)
-
Micro-caddisfly faunas of Australia and the southwest Pacific(Trichoptera, Hydroptilidae)
- 2016
-
Ingår i: Zoosymposia. - : Magnolia Press. - 1178-9905 .- 1178-9913. ; 10, s. 439-450
-
Tidskriftsartikel (refereegranskat)abstract
- Today's distributions of faunal groups reflect historic events—geological and evolutionary, as well as dispersals, extinctionsand chance events. The extent to which each of these contributed to the hydroptilid faunas of mainland Australia,Tasmania, New Guinea, New Zealand, New Caledonia, Fiji and Vanuatu is explored by comparison of the faunal composition,geology and geography of Australia and these SW Pacific islands. Corroborative evidence is sought from othergroups, flora as well as fauna.
|
|
| 5. |
- Wells, Alice, et al.
(författare)
-
Review of New Caledonian species of Oxyethira Eaton,with description of 17 new species, and new recordsfor Hydroptila Dalman and Hellyethira Neboiss(Trichoptera, Hydroptilidae).
- 2015
-
Ingår i: ZooKeys. - : Pensoft Publishers. - 1313-2989 .- 1313-2970. ; 530, s. 37-90
-
Tidskriftsartikel (refereegranskat)abstract
- New Caledonian representation of the cosmopolitan genus Oxyethira Eaton is reviewed, with the descriptionof new species bringing to 26 the total for the genus on the island. The species are referred to threesubgenera: Trichoglene Neboiss (11 species), Pacificotrichia Kelley (13 species) and Dampfitrichia Ulmer(one species) and one species is unplaced to subgenus. A key is provided to Oxyethira species of New Caledonia.In addition, new records are given for two otherwise Australian species, Hydroptila losida Moselyand Hellyethira malleoforma Wells. Points marked on a series of small maps of New Caledonia indicate thesite or sites at which the species were collected. This final paper in a series of generic revisions brings thehydroptilid fauna of the island of New Caledonia to 60 species, distributed in six genera.
|
|
| 6. |
|
|
| 7. |
- Wells, Alice, et al.
(författare)
-
Why are so many species based on a single specimen?
- 2019
-
Ingår i: Zoosymposia. - : Magnolia Press. - 1178-9905 .- 1178-9913. ; 14, s. 32-38
-
Tidskriftsartikel (refereegranskat)abstract
- A considerable number of insect species, including Trichoptera, are described from a single specimen, also knownas a 'unique' or a 'singleton'. We ask the question of whether this reflects failure to consider variation and relatedspecies, lack of collecting effort, or true rarity. In an attempt to answer this question we examine the availableliterature and data on the Trichoptera of Tasmania and New Caledonia. We note a low level of taxonomicsynonymy among species in these faunas. Moreover, a significant proportion of species from Tasmania that werebased originally on singletons have been re-collected subsequently, but this is not true for New Caledonia. Thepossible significance of these figures is considered following examination of data on diversity and abundance ofHydroptilidae collected by regular, standardised light trapping over almost two years at a northern Australiantropical stream. We conclude that quite a large proportion of the Trichoptera species based on singletons are rare,valid species, but for others the appearance of rarity may be a consequence of inadequate collecting, particularbehavioural attributes of the species, including seasonality, and failure to consider fully the structural diversity ofrelated species. Lastly, we discuss briefly the consequences of rarity, apparent or real, on conservationmanagement.
|
|
