Limits...
Calcaridorylaimus castaneae sp. n. (Nematoda, Dorylaimidae) from Bulgaria with an identification key to the species of the genus.

Nedelchev S, Elshishka M, Lazarova S, Radoslavov G, Hristov P, Peneva V - Zookeys (2014)

Bottom Line: Phylogenetic analyses were performed on 18S and D2-D3 expansion domains of 28S rRNA genes by Neighbor-Joining, Maximum Likelihood and Bayesian Inference methods.The phylograms inferred from 18S sequences showed closest relationships of the new species with some species belonging to the genus Mesodorylaimus.However, insufficient molecular data for members of both genera do not allow the phylogenetic relationships of Calcaridorylaimus and the new species described herein to be elucidated.

View Article: PubMed Central - HTML - PubMed

Affiliation: Faculty of Biology, University of Sofia, Bd. "Dragan Tzankov" 8, 1421 Sofia, Bulgaria.

ABSTRACT
An unknown species belonging to the genusCalcaridorylaimus Andrássy, 1986 was collected from the litter of broadleaf forests dominated by Castanea sativa Mill. and mixed with Quercus daleshampii Ten. and Fagus sylvatica L. on Belasitsa Mountain, south-western Bulgaria. Calcaridorylaimus castaneae sp. n. is characterised by its long body (1.4-2.1 mm), lip region practically not offset, vulva transverse, short odontostyle (14.5-16 μm) and tail (75.5-110.5 μm, c=14.7-23.6; c'=2.9-4.4) in females and 38-46 μm long spicules with small spur before their distant end in males. It is most similar to C. andrassyi Ahmad & Shaheen, 2004, but differs in having transverse vs pore-like vulva and shorter spicules (38-46 μm vs 52-57 μm). An identification key to the species of the genus Calcaridorylaimus is proposed. Phylogenetic analyses were performed on 18S and D2-D3 expansion domains of 28S rRNA genes by Neighbor-Joining, Maximum Likelihood and Bayesian Inference methods. The phylograms inferred from 18S sequences showed closest relationships of the new species with some species belonging to the genus Mesodorylaimus. However, insufficient molecular data for members of both genera do not allow the phylogenetic relationships of Calcaridorylaimus and the new species described herein to be elucidated.

No MeSH data available.


Distribution of Calcaridorylaimus spp. (■ Calcaridorylaimus calcarifer, ● Calcaridorylaimus andrassyi, ♦ Calcaridorylaimus arcticus, □ Calcaridorylaimus promissus, ▲ Calcaridorylaimus signatus, ○ Calcaridorylaimus simillimus, ♢ Calcaridorylaimus sirgeli, △ Calcaridorylaimus ruwenzorii, ◙ Calcaridorylaimus beatus, ▼ Calcaridorylaimus castaneae sp. n.).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4042707&req=5

Figure 1: Distribution of Calcaridorylaimus spp. (■ Calcaridorylaimus calcarifer, ● Calcaridorylaimus andrassyi, ♦ Calcaridorylaimus arcticus, □ Calcaridorylaimus promissus, ▲ Calcaridorylaimus signatus, ○ Calcaridorylaimus simillimus, ♢ Calcaridorylaimus sirgeli, △ Calcaridorylaimus ruwenzorii, ◙ Calcaridorylaimus beatus, ▼ Calcaridorylaimus castaneae sp. n.).

Mentions: During an ecological study of chestnut forests on Belasitsa Mountain (2003-2005) an undescribed species belonging to the genus Calcaridorylaimus Andrássy, 1986 was recovered. The genus Calcaridorylaimus is represented by nine species worldwide: Calcaridorylaimus calcarifer Andrássy, 1986, Calcaridorylaimus promissus Andrássy, 1986, Calcaridorylaimus ruwenzorii (De Coninck, 1935) Andrássy, 1986, Calcaridorylaimus signatus (Loof, 1975) Andrássy, 1986, Calcaridorylaimus simillimus Andrássy, 1986, Calcaridorylaimus sirgeli Heyns & Meyer, 1995, Calcaridorylaimus arcticus Gagarin, 1997, Calcaridorylaimus andrassyi Ahmad & Shaheen, 2004 and Calcaridorylaimus beatus Andrássy, 2011. The genus is distributed mainly in the southern hemisphere: three species occur in Africa, two in South America and one each in Antarctic, Central America, and Europe, and Calcaridorylaimus promissus was recorded from Australia and Alaska, North America (Andrássy 1986, 2003) (Fig. 1). The most characteristic features of these species are the shapes and structures of the spicules which are provided with a small spur before the distal tip. The new species is described based on both morphological and molecular data.


Calcaridorylaimus castaneae sp. n. (Nematoda, Dorylaimidae) from Bulgaria with an identification key to the species of the genus.

Nedelchev S, Elshishka M, Lazarova S, Radoslavov G, Hristov P, Peneva V - Zookeys (2014)

Distribution of Calcaridorylaimus spp. (■ Calcaridorylaimus calcarifer, ● Calcaridorylaimus andrassyi, ♦ Calcaridorylaimus arcticus, □ Calcaridorylaimus promissus, ▲ Calcaridorylaimus signatus, ○ Calcaridorylaimus simillimus, ♢ Calcaridorylaimus sirgeli, △ Calcaridorylaimus ruwenzorii, ◙ Calcaridorylaimus beatus, ▼ Calcaridorylaimus castaneae sp. n.).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4042707&req=5

Figure 1: Distribution of Calcaridorylaimus spp. (■ Calcaridorylaimus calcarifer, ● Calcaridorylaimus andrassyi, ♦ Calcaridorylaimus arcticus, □ Calcaridorylaimus promissus, ▲ Calcaridorylaimus signatus, ○ Calcaridorylaimus simillimus, ♢ Calcaridorylaimus sirgeli, △ Calcaridorylaimus ruwenzorii, ◙ Calcaridorylaimus beatus, ▼ Calcaridorylaimus castaneae sp. n.).
Mentions: During an ecological study of chestnut forests on Belasitsa Mountain (2003-2005) an undescribed species belonging to the genus Calcaridorylaimus Andrássy, 1986 was recovered. The genus Calcaridorylaimus is represented by nine species worldwide: Calcaridorylaimus calcarifer Andrássy, 1986, Calcaridorylaimus promissus Andrássy, 1986, Calcaridorylaimus ruwenzorii (De Coninck, 1935) Andrássy, 1986, Calcaridorylaimus signatus (Loof, 1975) Andrássy, 1986, Calcaridorylaimus simillimus Andrássy, 1986, Calcaridorylaimus sirgeli Heyns & Meyer, 1995, Calcaridorylaimus arcticus Gagarin, 1997, Calcaridorylaimus andrassyi Ahmad & Shaheen, 2004 and Calcaridorylaimus beatus Andrássy, 2011. The genus is distributed mainly in the southern hemisphere: three species occur in Africa, two in South America and one each in Antarctic, Central America, and Europe, and Calcaridorylaimus promissus was recorded from Australia and Alaska, North America (Andrássy 1986, 2003) (Fig. 1). The most characteristic features of these species are the shapes and structures of the spicules which are provided with a small spur before the distal tip. The new species is described based on both morphological and molecular data.

Bottom Line: Phylogenetic analyses were performed on 18S and D2-D3 expansion domains of 28S rRNA genes by Neighbor-Joining, Maximum Likelihood and Bayesian Inference methods.The phylograms inferred from 18S sequences showed closest relationships of the new species with some species belonging to the genus Mesodorylaimus.However, insufficient molecular data for members of both genera do not allow the phylogenetic relationships of Calcaridorylaimus and the new species described herein to be elucidated.

View Article: PubMed Central - HTML - PubMed

Affiliation: Faculty of Biology, University of Sofia, Bd. "Dragan Tzankov" 8, 1421 Sofia, Bulgaria.

ABSTRACT
An unknown species belonging to the genusCalcaridorylaimus Andrássy, 1986 was collected from the litter of broadleaf forests dominated by Castanea sativa Mill. and mixed with Quercus daleshampii Ten. and Fagus sylvatica L. on Belasitsa Mountain, south-western Bulgaria. Calcaridorylaimus castaneae sp. n. is characterised by its long body (1.4-2.1 mm), lip region practically not offset, vulva transverse, short odontostyle (14.5-16 μm) and tail (75.5-110.5 μm, c=14.7-23.6; c'=2.9-4.4) in females and 38-46 μm long spicules with small spur before their distant end in males. It is most similar to C. andrassyi Ahmad & Shaheen, 2004, but differs in having transverse vs pore-like vulva and shorter spicules (38-46 μm vs 52-57 μm). An identification key to the species of the genus Calcaridorylaimus is proposed. Phylogenetic analyses were performed on 18S and D2-D3 expansion domains of 28S rRNA genes by Neighbor-Joining, Maximum Likelihood and Bayesian Inference methods. The phylograms inferred from 18S sequences showed closest relationships of the new species with some species belonging to the genus Mesodorylaimus. However, insufficient molecular data for members of both genera do not allow the phylogenetic relationships of Calcaridorylaimus and the new species described herein to be elucidated.

No MeSH data available.