Description of a new species of the genus Talanema Andrássy, 1991 (Nematoda: Qudsianematidae) with additional data on three known species of the genus from Iran

Jabbari, Habibeh; Niknam, Gholmreza; Vazifeh, Nasir; Fallahi, Amin

doi:10.1007/s11756-021-00821-x

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…It can be easily separated from the components of this group by its larger general size (body 1.82-2.20 vs up to 1.86 mm). Nevertheless, in other aspects it is very similar to T. pararapax (Ahmad & Jairajpuri, 1982) Andrássy, 1992, known from India and Nepal (Ahmad & Jairajpuri, 1982) and Iran (Jabbari et al, 2021), but it differs from this in its wider lip region (20-23 vs 18-19 μm), presence (vs absence) of abundant cuticle irregularities at the perivulval area, longer spicules (70-74 vs 57-63 μm in Indian populations, 65-68 μm in the Iranian specimens), and shorter hiatus (last ventromedian supplement situated within the range of spicule vs a short distance in front of the anterior end of spicules).…”

Section: Diagnosis and Relationshipsmentioning

confidence: 80%

“…Its presence in Iran is well documented as four (two new and two known) species have been recorded and described in recent years (Jabbari et al, 2021) in the country. Nevertheless, a nematological survey conducted to explore the existence of further dorylaimid taxa yielded a new population of this genus.…”

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confidence: 95%

“…Talanema Andrássy, 1992 is a widely spread, freeliving, soil nematode genus. It has been the subject of recent monographic contributions (Imran et al, 2021;Jabbari et al, 2021;Peña-Santiago et al, 2023) that have made significant progress in the knowledge of its diversity, taxonomy and phylogeny with an integrative approach.…”

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confidence: 99%

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Morphological and molecular characterisation of Talanema maculatum sp. n. (Dorylaimida, Qudsianematidae) from Iran

et al. 2023

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Summary A new species of the genus Talanema, T. maculatum sp. n., collected in a natural enclave of Iran, is characterised on the basis of morphological and molecular data. It is distinguishable by its 1.82-2.20 mm long body, lip region offset by constriction and 20-23 μm wide with perioral liplets, odontostyle 21.5-28 μm long, guiding ring double, neck 394-525 μm long, pharyngeal expansion occupying 44-49% of the total neck length, uterus tripartite and 308-441 μm long or 5.1-6.8 body diam., vulva transverse (V = 54-58), presence of abundant cuticle irregularities at the perivulval area, tail similar in both sexes, conical with a dorsal concavity (31-45 μm, c = 46-71, c′ = 0.9-1.1), spicules 70-75 μm long, and 14-18 shortly spaced ventromedian supplements ending at level of the anterior end of spicules, with hiatus. Molecular analysis of 28S-rDNA gene confirms the monophyly of Talanema and the difficulties in elucidating its external evolutionary relationships.

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Section: Diagnosis and Relationshipsmentioning

confidence: 80%

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confidence: 95%

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Morphological and molecular characterisation of Talanema maculatum sp. n. (Dorylaimida, Qudsianematidae) from Iran

et al. 2023

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“…Other species were later on added by Vinciguerra and Clausi (1994) , Shaheen and Ahmad (2005) , and Andrássy (2011) . More recently, the genus was matter of two monographic contributions ( Imran et al, 2021 ; Jabbari et al, 2021 ), including the first molecular study of one of its representatives using 18S, D2–D3 28S rDNA data. Besides, Peña-Santiago et al (2022) have described its thirteenth species from the Iberian Peninsula.…”

mentioning

confidence: 99%

“… Jabbari et al (2021) studied one previously undescribed and three known species from Iran, where the genus apparently is well represented and diverse. Recently, another Iranian population was collected during a nematological survey conducted in the country.…”

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confidence: 99%

Morphological and Molecular Characterization of Talanema eshtiaghii sp. n. (Dorylaimida, Qudsianematidae) from Iran

Vazifeh

Niknam

Jabbari

et al. 2023

Journal of Nematology

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A new species of the genus Talanema, recovered from the northwest of Iran, was described based on morphological, morphometric, and molecular data. Talanema eshtiaghii sp. n. was characterized by its 1.45–1.68 mm long body, lip region offset by constriction and 13–15 μm wide, odontostyle 15–18 μm long, double guiding ring, neck 312–362 μm long, pharyngeal expansion occupying 41–43% of the total neck length, uterus tripartite, and 111–189 μm long or 2.1–3.2 body diameters, vulva transverse (V = 55–58), tail similar in both sexes, conical with a dorsal concavity (30–44 μm, c = 33–56, c’ = 1.0–1.6), spicules 49–56 μm long, and 14–18 shortly spaced ventromedian supplements in front of the level of the anterior end of spicules, with distinct hiatus. It was compared to four closely similar species, with emphasis on the most relevant traits to distinguish them. Molecular phylogenetic studies using partial sequence of the 28S rDNA (D2–D3 segment) revealed that the new species forms a clade with other currently sequenced representatives of Talanema, tentatively supporting the monophyly of this genus.

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Morphological and molecular characterisation of Talanema ibericum sp. n. (Dorylaimida, Qudsianematidae) from southern Iberian Peninsula

et al. 2022

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Summary A new species of the genus Talanema, T. ibericum sp. n., collected in natural areas of southeastern Iberian Peninsula, is characterised, including morphological description, line, LM and SEM illustrations, and molecular (18S, D2-D3 28S rDNA sequences) study. The new species is distinguished by its 1.27-1.59 mm long body, lip region offset by constriction and 14-16.5 μm wide with perioral liplets, odontostyle 16.5-19.5 μm long, neck 285-359 μm long, pharyngeal expansion occupying 42-48% of the total neck length, uterus tripartite and 147-228 μm long or 2.6-4.0 body diam., vulva transverse (V = 53-59), presence of cuticular irregularities at both sides of vulva, female tail conical with a dorsal concavity (27-40 μm, c = 36-54, c′ = 1.0-1.3), male tail short and rounded conoid (24 μm, c = 66, c′ = 0.8), spicules 58 μm long, and 17 almost contiguous ventromedian supplements with hiatus. Morphological and molecular data reveal that the new species is similar to (but easily separable from) T. baqrii, with which it is compared. Present results support the monophyly of the genus Talanema.

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Description of a new species of the genus Talanema Andrássy, 1991 (Nematoda: Qudsianematidae) with additional data on three known species of the genus from Iran

Cited by 3 publications

References 4 publications

Morphological and molecular characterisation of Talanema maculatum sp. n. (Dorylaimida, Qudsianematidae) from Iran

Morphological and molecular characterisation of Talanema maculatum sp. n. (Dorylaimida, Qudsianematidae) from Iran

Morphological and Molecular Characterization of Talanema eshtiaghii sp. n. (Dorylaimida, Qudsianematidae) from Iran

Morphological and molecular characterisation of Talanema ibericum sp. n. (Dorylaimida, Qudsianematidae) from southern Iberian Peninsula

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