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| 9. |
- Brodowski, W, et al.
(författare)
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Two-Pion Production in Nucleon-Nucleon Collisions
- 2002
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Ingår i: Proc. Int. Conf. on Production, Properties and Interaction of Mesons, MESON 2002, Cracow, Poland, 2002..
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 11. |
- Cavalcante, Bruna Maria Silva, et al.
(författare)
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Three new species of Oxyethira Eaton, 1873 (Trichoptera: Hydroptilidae) from New Caledonia
- 2022
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Ingår i: European journal of taxonomy. - : Museum National D'Histoire Naturelle. - 2118-9773. ; 789, s. 1-10
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Tidskriftsartikel (refereegranskat)abstract
- Oxyethira Eaton, 1873 is one of the most diverse genera of Hydroptilidae, comprising over 240 species distributed in all biogeographical regions. Here three new species of Oxyethira (Trichoglene) Neboiss, 1977 are described and illustrated from male specimens collected in New Caledonia: O. (Trichoglene) hamus sp. nov., recognized by the hook-shaped apex of the long inferior appendages in lateral view and by the posterior margin of segment IX with a trilobed appearance in ventral view; O. (Trichoglene) rectangulata sp. nov., recognized by the rectangular shape of the inferior appendages, which are totally fused and with two pairs of small setae on the inner face; and O. (Trichoglene) spiralis sp. nov., recognized by the strongly curvilinear shape of the subgenital process in dorsal
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| 15. |
- Espeland, Marianne, et al.
(författare)
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A new species of Goera Stephens : 1829 (Goeridae Trichoptera) from the Solomon Islands
- 2011
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Ingår i: Aquatic Insects. - : Informa UK Limited. - 0165-0424 .- 1744-4152. ; 33:2, s. 185-189
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Tidskriftsartikel (refereegranskat)abstract
- Male and female of Goera pitisopai sp. nov. from the Solomon Islands are illustrated and described based on recently collected material. This is the first species of the family Goeridae reported from the Solomon Islands, and the sixth from the Australasian region.
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| 16. |
- Espeland, Marianne, 1981-, et al.
(författare)
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Dichlorvos exposure impedes extraction and amplification of DNA from insects in museum collections
- 2010
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Ingår i: Frontiers in Zoology. - : Springer Science and Business Media LLC. - 1742-9994. ; 7:2, s. 1-8
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Tidskriftsartikel (refereegranskat)abstract
- Background: The insecticides dichlorvos, paradichlorobenzene and naphthalene have been commonly used to eradicate pest insects from natural history collections. However, it is not known how these chemicals affect the DNA of the specimens in the collections. We thus tested the effect of dichlorvos, paradichlorobenzene and naphthalene on DNA of insects (Musca domestica) by extracting and amplifying DNA from specimens exposed to insecticides in two different concentrations over increasing time intervals. Results: The results clearly show that dichlorvos impedes both extraction and amplification of mitochondrial and nuclear DNA after relatively short time, whereas paradichlorobenzene and naphthalene do not. Conclusion: Collections treated with paradichlorobenzene and naphthalene, are better preserved concerning DNA, than those treated with dichlorvos. Non toxic pest control methods should, however, be preferred due to physical damage of specimens and putative health risks by chemicals.
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| 17. |
- Espeland, Marianne, 1981-
(författare)
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Diversification on an ancient Darwinian island : Evolutionary history of caddisflies (Trichoptera) and other organisms on New Caledonia
- 2010
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Islands are either of continental or oceanic origin, and the biota of such islands are a result of vicariance and dispersal, respectively. New Caledonia, in the South Pacific, is a part of former Gondwana, but the origin of its biota is heavily debated. Geological studies show that the island was submerged in the Eocene, and that oceanic crust was obducted onto New Caledonia leaving a thick layer of ultramafic rocks on top of the island. We tested the null hypothesis that New Caledonian biota are a result of old Gondwanan vicariance by fitting diversification models on phylogenies from the literature and calculating the gamma statistic. According to the null hypothesis diversification is gradual over time. If on the other hand the biota are a result of recent dispersal or have survived in refugia we would expect slowing of diversification over time. Based on our results we can reject the null hypothesis of old vicariance for the New Caledonian biota. The caddisfly (Trichoptera) fauna on New Caledonia is exceptionally rich with around 600 species, and more than 99.9% are endemic. Molecular phylogenetic hypotheses for three monophyletic caddisfly radiations, Xanthochorema, Caledopsyche et al. and Agmina, are presented. Age estimates agrees with the geological evidence. Three new species of Xanthochorema are described and more than 63% of the Agmina species are new to science. The ultramafic rock substrate, with high heavy metal concentration, has led to high levels of plant adaptation on New Caledonia. We show that caddisflies adapted early to this substrate and subsequently dispersed to non-ultramafic substrate several times, with significantly fewer dispersal events back to the toxic substrate, indicating that adaptation to ultramafic substrate is required and recolonization is difficult when this adaptation has been lost. Ultramafic substrate and other environmental factors have been important in driving the diversification of New Caledonian caddisflies.
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| 18. |
- Espeland, Marianne, et al.
(författare)
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Early Xanthochorema (Trichoptera, Insecta) radiations in New Caledonia originated on ultrabasic rocks.
- 2008
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Ingår i: Molecular Phylogenetics and Evolution. - : Elsevier BV. - 1055-7903 .- 1095-9513. ; 48:3, s. 904-17
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Tidskriftsartikel (refereegranskat)abstract
- The toxic and nutrient poor ultrabasic rock substrate covering one-third of New Caledonia greatly influenced on the biogeography and diversity of plants in the island. Studies on the effect of ultrabasic substrate on fauna are almost entirely absent. In this paper we examine whether the diversification of Trichoptera of the New Caledonian endemic genus Xanthochorema Kimmins, 1953 was related to the presence of ultrabasic substrate. The analysis is based on data from a phylogeny derived from DNA sequences of mitochondrial COX1, COX2 and 16S, and nuclear EF1a genes. The study of the relationships between ancestral species and substrate was carried out using dispersal-vicariance analysis and tracing the history of substrate association with ultrabasic and non-ultrabasic distributions representing the terminals in the fully resolved phylogenetic tree. Our results show that (1) the ancestor of all Xanthochorema species was present on ultrabasic substrate, (2) early speciation events were restricted to ultrabasic substrate, (3) younger ancestral species dispersed into non-ultrabasic substrates, and (4) late speciation events were restricted to non-ultrabasic substrate. These results correspond to the hypothesis that New Caledonia once was more extensively covered by ultrabasic rocks than at present.
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| 20. |
- Espeland, Marianne, et al.
(författare)
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The diversity and radiation of the largest monophyletic animal group on New Caledonia (Trichoptera: Ecnomidae: Agmina)
- 2010
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Ingår i: Journal of Evolutionary Biology. - : Wiley. - 1010-061X .- 1420-9101. ; 23:10, s. 2112-2122
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Tidskriftsartikel (refereegranskat)abstract
- In area, New Caledonia is the smallest of the world's 25 official biodiversity hotspots, but in many taxonomic groups, the island has the highest concentration of species on earth, particularly so in the freshwater insect order Trichoptera. This study aims at applying molecular data and morphology for estimating the real species diversity of the genus Agmina on New Caledonia and investigating potential effects of ultramafic rock substrate on diversification. A dated molecular phylogeny was applied to study diversity and diversification related to geological substrate using the dispersal-extinction-cladogenesis model, diva and Bayesian ancestral character reconstruction. More than 47 species (> 63%) were unknown to science. Initial radiation occurred on ultramafic substrate followed by several independent dispersal events to nonultramafic substrate. The rate of shift from ultramafic to nonultramafic substrate was significantly higher than the rate of shift in the opposite direction, indicating a possible cost associated with living on ultramafic substrate.
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| 21. |
- Espeland, Marianne, 1981-, et al.
(författare)
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The effect of environmental diversification on species diversification in New Caledonian caddisflies (Insecta: Trichoptera: Hydropsychidae)
- 2010
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Ingår i: Journal of Biogeography. - : Wiley. - 0305-0270 .- 1365-2699. ; 37:5, s. 879-890
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Tidskriftsartikel (refereegranskat)abstract
- Aim To test whether environmental diversification played a role in the diversification of the New Caledonian Hydropsychinae caddisflies. Location New Caledonia, south-west Pacific. Methods The phylogeny of the New Caledonian Hydropsychinae caddisflies was hypothesized using parsimony and Bayesian methods on molecular characters. The Bayesian analysis was the basis for a comparative analysis of the correlation between phylogeny and three environmental factors: geological substrate (ultrabasic, non-ultrabasic), elevation and precipitation. Phylogenetic divergence times were estimated using a relaxed clock method, and environmental factors were mapped onto a lineage-through-time plot to investigate the timing of environmental diversification in relation to species radiation. The correlation between rainfall and elevation was tested using independent contrasts, and the gamma statistic was calculated to infer the diversification pattern of the group. Results The diversification of extant Orthopsyche–Caledopsyche species began in the Middle–Late Oligocene, when much of the island of New Caledonia was covered by ultrabasic substrate and mountain forming was prevalent. Most lineages originated in the Middle–Late Miocene, a period associated with long-term climate oscillation. Optimization of environmental factors on the phylogeny demonstrated that the New Caledonian Hydropsychinae group adapted to ultrabasic substrate early in its evolutionary history. The clade living mostly on ultrabasic substrate was far more species-rich than the clade living mostly on non-ultrabasic substrate. Elevation and rainfall were significantly correlated with each other. The lineage-through-time plot revealed that the main environmental diversification preceded species diversification. A constant speciation through time was rejected, and the negative gamma indicates that most of the diversification occurred early in the history of the clade. According to the inferred phylogeny, the genus Orthopsyche McFarlane is a synonym under Caledopsyche Kimmins, and Abacaria caledona Oláh & Barnard should also be included in Caledopsyche. Main conclusions The age of the radiation does not support a vicariance origin of New Caledonian Hydropsychinae caddisflies. Environmental diversification pre-dates lineage diversification, and thus environmental heterogeneity potentially played a role in the diversification of the group, by providing a variety of fragmented habitats to disperse into, promoting speciation. The negative gamma indicates that the speciation rate slowed as niches started to fill.
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| 24. |
- Hovmöller, Rasmus, 1975-
(författare)
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Molecular phylogenetics and taxonomic issues in dragonfly systematics (Insecta: Odonata)
- 2006
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Dragonflies (Odonata) are one of the ancestral groups of extant insects. They represent one of the three most basal branches in the phylogeny of winged insects. The other two groups are the Ephemeroptera, mayflies, and Neoptera, the latter which covers the remaining winged insects. The first paper is about the phylogenetic position of Odonata in relation to the other basal insect clades using 18S and 28S rDNA sequences. It was demonstrated that there are under certain parameters a strong statistical support for a sister-group relationship between Odonata and Neoptera forming the group Palaeoptera. The second paper is about the phylogeny of the Holarctic dragonfly Leucorrhinia. Dragonfly larvae are frequently equipped with spines on the abdomen, with great variation in spinyness between species. From an analysis of sequences of ITS and 5.8S rDNA it was found that spines have been lost at least twice in Leucorrhinia, in the European L. rubicunda and again in a clade of North American species. The third paper is on the subfamily Ischnurinae (Odonata: Coenagrionidae), a group dominated by the two larger genera Ischnura and Enallagma along with several mono- or oligotypic genera. From the presented molecular study, using mitochondrial 16S rDNA and COII sequences, it is demonstrated that Ischnurinae, and Ischnura are monophyletic. Enallagma is not monophyletic, and the genus name Enallagma should be restricted to the E. cyathigerum clade. he fourth paper is a catalog of the genus Coenagrion, with full information on synonymy, type material and bibliographical data. The fifth paper is an appeal to the International Commission on Zoological Nomenclature to suppress the genus group name Agrion. The letter of appeal elucidates the priority of Agrion, and demonstrates why it has fallen out of use. A case if made for why Agrion should be placed on the list of unavailable names, and Calopteryx given full validity.
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- Johanson, Kjell Arne, 1966-, et al.
(författare)
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Annotated catalog of Vietnamese Trichoptera (Insecta)
- 2023
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Ingår i: Opuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis. - 0237-5419 .- 2063-1588. ; 54:Supplementum 1, s. 1-160
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Tidskriftsartikel (refereegranskat)abstract
- All 835 valid species of caddisflies recorded from Vietnam by the end of 2021 are cataloged. The catalog is annotated with information about reference to original description where the species was described, type locality, depository institution of the type material, habitat where the species has been collected, and distribution. The distribution section covers all countries as well as Vietnamese provinces from where species has been recorded. The catalog is based on records of about 7,600 individuals recorded in literature, of which 69 % of the individuals are males and 31 % are females. With 139 species recorded, the most species rich family in Vietnam is the Hydropsychidae, followed by the Philopotamidae, Leptoceridae and the Hydroptilidae. These four families comprise 50% of the species diversity of caddisflies in Vietnam. By number of species, the smallest families are the Phryganopsychidae and Brachycentridae (two species each) and the Sericostomatidae, Phryganeidae and Limnocentropodidae that are represented by only one species each.
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- Johanson, Kjell Arne, 1966-, et al.
(författare)
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Description of six new species of Oecetis (Trichoptera, Leptoceridae) from Vietnam
- 2020
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Ingår i: Zootaxa. - 1175-5326 .- 1175-5334. ; 4816:3, s. 311-324
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Tidskriftsartikel (refereegranskat)abstract
- The following six new Oecetis species have been described and illustrated: O. lata, O. gretae, O. malickyi, O. porntipae, O. olahi, and O. hageni. The following three Oecetis species are recorded for the first time from Vietnam: O. maron Malicky & Chantaramongkol 2005 (in Malicky 2005), O. iakchos Malicky 2005, and O. jachin Malicky & Mey 2010 (in Malicky 2010a). We present new records of the following six Oecetis species that are previously known from Vietnam: O. raghava Schmid 1995, O. biramosa Martynov 1936, O. tripunctata (Fabricius 1793), O. meleagros Malicky & Thani 2005, O. asmada Malicky 1979, and O. empusa Malicky & Chaibu 2000. A map presents the distribution of the Oecetis species included in this report.
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| 37. |
- Johanson, Kjell Arne, 1966-
(författare)
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Description of three new species of Caledomina (Insecta,Trichoptera, Ecnomidae) from New Caledonia
- 2017
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Ingår i: European journal of taxonomy. - : Museum National D'Histoire Naturelle. - 2118-9773. ; 352, s. 01-12
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Tidskriftsartikel (refereegranskat)abstract
- Three new species of Caledomina Johanson, 2011 are described and illustrated for the first time: C. paniensis sp. nov., C. dorsospina sp. nov. and C. kohensis sp. nov. A key to the males of the four known species in the genus is given, as well as a map indicating their geographical distribution. When examining a phylogenetic hypothesis comprising the four species, we see an increased complexity in younger species compared to older species.
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| 38. |
- Johanson, Kjell Arne, 1966-, et al.
(författare)
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Description of three new species of Oecetis McLachlan, 1877 (Trichoptera: Leptoceridae) from Laos
- 2021
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Ingår i: Aquatic Insects. - : Taylor & Francis Group. - 0165-0424 .- 1744-4152. ; 42:1, s. 1-11
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Tidskriftsartikel (refereegranskat)abstract
- Three new species of Oecetis McLachlan, 1877 from Laos are described, O. asymmetrica sp. n., O. conjuncta sp. n. and O. triangulata sp. n. Additional faunistic records are provided for two species already known from Laos: O. empusa Malicky and Chaibu, 2000 and O. raghava Schmid, 1995.
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| 41. |
- Johanson, Kjell Arne, 1966-, et al.
(författare)
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Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo
- 2022
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Ingår i: European journal of taxonomy. - : Museum National D'Histoire Naturelle. - 2118-9773. ; 819, s. 158-165
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Tidskriftsartikel (refereegranskat)abstract
- Two new species of Oecetis from Maliau Basin, Malaysian Borneo, are described for the first time, O. mesospina sp. nov. and O. apelqvisti sp. nov. These two new species bring the total number of Oecetis found on the island of Borneo up to 16.
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| 42. |
- Johanson, Kjell Arne, et al.
(författare)
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Description of new Chimarra (Trichoptera: Philopotamidae) species from the Solomon Islands
- 2010
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Ingår i: Zootaxa. - 1175-5326 .- 1175-5334. ; :2638, s. 25-43
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Tidskriftsartikel (refereegranskat)abstract
- Nine new species of Chimarra (Philopotamidae) are described from the Solomon Islands. Chimarra maculata, C. veveensis, C. babarensis, and C. ventrospina are described from Kolombangara Island; and C. talinensis, C. kolombangensis, C. vitapinensis, C. solomonensis, and C. rosavensis were described from both Guadalcanal Island and Kolombangara Island. Chimarra biramosa Kimmins was collected from both Kolombangara Island and Guadalcanal Island.
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| 46. |
- Johanson, Kjell Arne, 1966-, et al.
(författare)
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Eighteen new species of Oecetis McLachlan 1877 (Trichoptera, Leptoceridae) from New Caledonia
- 2020
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Ingår i: Zootaxa. - 1175-5326 .- 1175-5334. ; 4809:2, s. 201-240
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Tidskriftsartikel (refereegranskat)abstract
- Eighteen new species of Oecetis are described, diagnosed, and illustrated from New Caledonia: Oecetis amphora sp. nov., Oecetis ovula sp. nov., Oecetis ramosa sp. nov., Oecetis loyolaensi sp. nov., Oecetis millei sp. nov., Oecetis christinae sp. nov., Oecetis rostrata sp. nov., Oecetis alicae sp. nov., Oecetis oxybelis sp. nov., Oecetis dorsospina sp. nov., Oecetis multidentata sp. nov., Oecetis gracilis sp. nov., Oecetis rostra sp. nov., Oecetis triramosa sp. nov., Oecetis flucta sp. nov., Oecetis nouvellecaledoniensis sp. nov., Oecetis variabilis sp. nov., and Oecetis ovata sp. nov. A diagnostic key is provided for males of Oecetis species of New Caledonia. The species display similarities in genitalic characteristics but also a high diversity of apomorphic features. The new species were collected from lotic habitats across most of Grande Terre.
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