Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Jyrki Muona is active.

Publication


Featured researches published by Jyrki Muona.


EXS | 2002

DNA multiple sequence alignments

Gonzalo Giribet; Ward C. Wheeler; Jyrki Muona

In this chapter we examine the procedure of multiple sequence alignment. We first examine the heuristic procedures commonly used in multiple sequence alignment. Next we examine sources of ambiguity involved in the alignment procedure. We suggest that several alignment parameters be employed to examine alignment sensitivity. We end by presenting an experiment with humans showing the ambiguity involved in manual alignment.


Insect Systematics & Evolution | 2007

Anischia , Perothops and the phylogeny of Elateroidea (Coleoptera: Elateriformia)

John F. Lawrence; Jyrki Muona; Marianna Teräväinen; Gunilla Ståhls; Varpu Vahtera

The larvae of Anischia Fleutiaux and Perothops Laporte are described. Cladistic analyses based on adult and larval morphology, as well as CO1 sequence data, place both genera in the Eucnemidae clade within the Elateroidea (sensu stricto). The subfamily Anischiinae Fleutiaux, 1936 is placed in the family Eucnemidae in a clade containing the more derived eucnemid subfamilies (Melasinae, Eucneminae and Macraulacinae), while Perothops and Phyllocerus Lepeletier & Serville represent subfamilies basal to the remaining eucnemid taxa. The genus Afranischia Basilewsky, 1955 is synonymized with Anischia Fleutiaux, 1896, and Anischia boliviana Fleutiaux is selected as the type species of the latter. Three new species are described: Anischia bicolor (New Caledonia), Anischia kuscheli (New Caledonia) and Anischia monteithi (NE Australia), and Anischia stupenda Fleutiaux, 1897 is recorded from Australia. Anischia crassicornis Champion, 1897 is synonymized with Anischia mexicana Fleutiaux, 1896. One new combination is made, Anischia ruandana (Basilewsky, 1955).


Cladistics | 2004

Phylogenetic relationships of the genus Cheilosia and the tribe Rhingiini (Diptera, Syrphidae) based on morphological and molecular characters

Gunilla Ståhls; Jens-Hermann Stuke; Ante Vujić; Dieter Doczkal; Jyrki Muona

The phylogenetic relationships of the tribe Rhingiini and the genus Cheilosia (Diptera, Syrphidae) were investigated using morphological and molecular characters. The genus Cheilosia is one of the most diverse lineages of hoverflies (Syrphidae). The mitochondrial protein coding gene cytochrome c oxidase subunit I (COI), and the D2‐3 region of the nuclear 28S rRNA gene were chosen for sequencing, and morphological characters were scored for both adults and immature stages. The combined dataset included 56 ingroup taxa. The datasets were analyzed separately and in conjunction, using both static and dynamic alignment under the parsimony criterion. The aim of the study was to assess the phylogenetic relationships of the tribe Rhingiini, and to explore if the subgenera of Cheilosia were supported as monophyletic clades. Results showed that the monophyly of subtribes of Rhingiini remained ambiguous, especially due to unstable phylogenetic placements of the genera Portevinia and Rhingia. We recovered most subgenera of Cheilosia as monophyletic clades. Dynamic alignment, using the optimization alignment program POY, always recovered more parsimonious topologies under all parameter weighting schemes, than did parsimony analyses using static alignment and analyzed with NONA.


Coleopterists Bulletin | 2008

Notes on the Biology and Morphology of False Click-Beetle Larvae (Coleoptera: Eucnemidae)

Jyrki Muona; Marianna Teräväinen

Abstract The function of microtrichial patches and areoles found in most eucnemid larvae is discussed. The areoles are regarded to be water excreting organs important for larval water-balance. The microtrichial patches were known to be an essential part of the larval locomotory method. It is suggested the modified spiracular collars associated with larvae of certain Dirhagini and Macraulacinae play a similar role. This appears especially clear with respect to Asiocnemis spp. The overall similarity between soft-bodied larvae of the few true wood-boring Eucnemidae is considered a homoplastic adaptation to multiple secondary invasions into relatively hard wood.


Cladistics | 2009

Phylogeny of the Thylacosterninae (Coleoptera, Elateridae)

Varpu Vahtera; Jyrki Muona; John F. Lawrence

The phylogeny of the Elateridae subfamily Thylacosterninae was studied using morphological characters and mitochondrial 16S rDNA sequences. Five monophyletic groups were recovered: the Asian Cussolenis, the American Pterotarsus, Balgus and Thylacosternus, and the African “Cussolenis”, which is described here as Lumumbaia new genus Muona & Vahtera (type‐species Cussolenis attenuatus Fleutiaux, 1925). The following new combinations are made: Lumumbaia africanus (Fleutiaux, 1897) [Soleniscus], Lumumbaia praeustus (Fleutiaux, 1926) [Cussolenis], Lumumbaia nigripes (Fleutiaux, 1926) [Cussolenis], Lumumbaia robustus (Fleutiaux, 1925) [Cussolenis], Lumumbaia attenuatus (Fleutiaux, 1925) [Cussolenis] and Lumumbaia notabilis (Fleutiaux, 1926) [Cussolenis]. A key to the genera of the subfamily is provided. The data were efficient in recovering generic limits within the group. At species level the mitochondrial 16S rDNA data seemed to work unpredictably, either agreeing or not with traditional species‐level limits based on male genitalia and body structure. The evolution of bioluminescence is optimized as a feature originating in the ancestors of clicking elateroids. © The Willi Hennig Society 2009.


Cladistics | 2006

The molecular phylogeny of the Miarus campanulae (Coleoptera: Curculionidae) species group inferred from CO1 and ITS2 sequences

Varpu Vahtera; Jyrki Muona

Miarus is a Holarctic weevil genus with morphologically very similar species, all breeding on Campanula plants or their close relatives. Two European members of this genus, Miarus campanulae (L.), the type species, and Miarus graminis (Bohemann) have recently been split into several new species on the basis of slight external variations. The separation of these new forms has proved impossible and new data was needed. Molecular data were gathered from specimens from a number of locations in Finland, Estonia, Denmark and Sweden. The regions sequenced were mitochondrial CO1 and nuclear ITS2. Both combined and separate datasets were analyzed using the optimization alignment program POY, with parsimony as the optimality criterion. The recently separated Miarus species was found to be indistinguishable from the traditionally recognized form on the basis of this sequence data. On the other hand, the traditionally recognized species were characterized by numerous synapomorphies. Our data suggest that recent studies have underestimated the morphological variation in this genus. We propose that this may also be true for many taxonomically problematic beetle complexes in well‐studied European regions. The idea that molecular evidence will inevitably reveal unnoticed cryptic variation may only apply to poorly known regions. Miarus fennicus Kangas, 1978 is placed as a junior synonym of Miarus campanulae (Linnaeus, 1767) syn. nov.


Biodiversity and Conservation | 2016

Application of the Red List Index as an indicator of habitat change

Aino Juslén; Juha Pykälä; Saija Kuusela; Lauri Kaila; Jaakko Kullberg; Jaakko Aleksi Mattila; Jyrki Muona; Sanna Saari; Pedro Cardoso

For the first time ever, the International Union for Conservation of Nature Red List Index for habitat types was calculated for an entire country, Finland. The RLIs were based on species threat assessments from 2000 and 2010 and included habitat definitions for all 10,131 species of 12 organism groups. The RLIs were bootstrapped to track statistically significant changes. The RLI changes of species grouped by habitats were negative for all habitat types except for forests and rural biotopes which showed a stable trend. Trends of beetles and true bugs were positive in rural and forest habitats. Other 16 observed trends of species group and habitat combinations were negative. Several trends observed were in accordance with studies focusing on particular taxa and habitats, and drivers for their change. This study demonstrates the usefulness of the RLI as a tool for observing habitat change based on species threat assessment data.


Zootaxa | 2014

Description of Dirrhagofarsus ernae n. sp. with a key to the known Dirrhagofarsus species (Coleoptera: Eucnemidae)

Robert L. Otto; Jyrki Muona; Jim Mcclarin

The adult and the larva of Dirrhagofarsus ernae n. sp. are described from the Eastern United States. The genus Dirrhagofarsus is diagnosed and a key to all known species of the genus is provided.


Cladistics | 2016

Chinese Cretaceous larva exposes a southern Californian living fossil (Insecta, Coleoptera, Eucnemidae)

Chang Huali; Jyrki Muona; Pu Hanyong; Xu Li; Wang Chen; Marianna Teräväinen; Ren Dong; Yang Qiang; Zhang Xingliao; Jia Songhai

Palaeoxenus sinensis Chang, Muona & Teräväinen sp. nov. (Coleoptera, Eucnemidae) is described on the basis of a Cretaceous larva found from the Yixian Formation in Huangbanjigou, Liaoning Province, China. The only previously known member of this clade is a southern Californian endemic, Dohrns elegant eucnemid beetle (Palaeoxenus dohrni), a species that develops in conifers, especially the incense cedar (Calocedrus decurrens). The new find proves that the highly specialized main eucnemid lineages had evolved 123 Mya, before the main radiation of the angiosperms and probably as an adaptation to development in gymnosperms.


Cladistics | 2010

The phylogeny of the Pantropical genus Arrhipis Bonvouloir (Coleoptera, Eucnemidae)

Lena Brüstle; Diane Alaruikka; Jyrki Muona; Marianna Teräväinen

The phylogeny of the genus Arrhipis Bonvouloir (Coleoptera, Eucnemidae) is clarified with a cladistic analysis based on five molecular markers and morphology. Sixteen species from Africa, America, Asia, and Australia are included in the analysis. Two separate Asian clades are recovered, one of them being the sister group to a clade with the American and African species. With the exception of the continental south‐east Asian species, all Gondwanan regions have monophyletic faunas. According to the present data, the continental south‐east Asian fauna comprises two monophyletic groups, one of which is the sister group to African and American species. Vicariance seems to be the logical explanation for the distribution of these lignicolous beetles.

Collaboration


Dive into the Jyrki Muona's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

Marianna Teräväinen

American Museum of Natural History

View shared research outputs
Top Co-Authors

Avatar

Gunilla Ståhls

American Museum of Natural History

View shared research outputs
Top Co-Authors

Avatar

Jinbae Seung

Seoul National University

View shared research outputs
Top Co-Authors

Avatar

Seung Hwan Lee

Seoul National University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge