A New Species of<i>Strongyluris</i>(Nematoda: Heterakidae) from the Lizard,<i>Lophognathus temporalis</i>(Sauria: Agamidae) from Papua New Guinea

Bursey, Charles R.; Goldberg, Stephen R.; Kraus, Fred

doi:10.1645/13-258.1

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…According to Bursey et al (2013), with the addition of S. amazonicus by Santos et al (2013), 33 nominal Strongyluris spp. have currently been recorded worldwide.…”

Section: Discussionmentioning

confidence: 99%

“…The type species of the genus is S. brevicaudata Müller, 1894 and currently, a few dozen species have been recorded from the large intestine of lizards and, rarely, amphibians (Yamaguti and Mitunaga 1943). Bursey et al (2003Bursey et al ( , 2013, by adding several species since Baker's report (1984), documented 32 nominal Strongyluris spp. recorded worldwide: six species from the Australian zoogeographic region; 12 species from the Ethiopian; four species from the Nearctic; four species from the Neotropical; and six species from the Oriental.…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, a few new species such as S. amazonicus from the Neotropical have been added to the list (Santos et al 2013). Inglis (1957) specifically expressed his concern regarding whether every nominal species at that time, also included in the latest list by Bursey et al (2013), could be differentiated from congeners based on the morphological descriptions provided by each research group.…”

Section: Introductionmentioning

confidence: 99%

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Morphological and molecular genetic diversity of Strongyluris calotis (Nematoda: Ascaridida: Heterakidae) in South East and East Asian lizards

et al. 2016

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Strongyluris calotis is a heterakid nematode in the large intestine of agamid lizards (Reptilia: Sauria: Agamidae) from the Oriental Region. The standard light microscopic definition of the species counts the "caudal papillae" as 10 pairs on male worms. However, previous work from our group using scanning electron microscopy (SEM) on the heterakid from agamid lizards in Japan, Taiwan, and Singapore revealed that this counting contained a pair of phasmids and that two pairs of postcloacal papillae were completely fused to form a pair of united papillae, thus resulting in "10 pairs." In the present study, we examined S. calotis specimens from the Emma Gray's forest lizard, Calotes emma (Agamidae), living in the plain forest at low altitude, and the Vietnam false bloodsucker, Pseudocalotes brevipes (Agamidae), living in the mountainous forest at high altitude in the northern part of Vietnam. Using SEM, the arrangement of caudal papillae in male worms from an Emma Gray's forest lizard was found to be comparable to classical S. calotis specimens from agamid lizards collected in Japan, Taiwan, and Singapore. However, male worms from Vietnam false bloodsuckers did not have a pair of united papillae but had 10 pairs of independent caudal papillae with a pair of phasmids. Molecular genetic analyses of the ribosomal RNA gene (rDNA) of worms of the classical S. calotis morphotype from Japan and Singapore and two S. calotis morphotypes from Vietnam demonstrated absolutely identical nucleotide sequences of partial 18S rDNA (at least 1764 base pairs (bp)) and 5.8S rDNA (158 bp). However, intraspecific differences were detected in other regions of the rDNA, related to the geographical distribution of hosts regardless of morphotype: 97.8-98.5 % identity (443-446 bp/453 bp) in the internal transcribed spacer (ITS)-1 region, 96.6-98.0 % identity (425-431 bp/440 bp) in the ITS-2 region, and 99.6-99.7 % identity (1149-1151 bp/1154 bp) in the 28S rDNA. Thus, in the future, taxonomic relationships of S. calotis distributed widely in the Oriental Region as well as other nominal Oriental Strongyluris spp., currently six in number, need to be extensively explored based on molecular genetic analyses in addition to intensive morphological characterization.

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“…According to Bursey et al (2013), with the addition of S. amazonicus by Santos et al (2013), 33 nominal Strongyluris spp. have currently been recorded worldwide.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphological and molecular genetic diversity of Strongyluris calotis (Nematoda: Ascaridida: Heterakidae) in South East and East Asian lizards

et al. 2016

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Redescription of the nematode parasites of lizards: Strongyluris oscari Travassos, 1923 (Heterakidae) from Brazil and Pharyngodon mamillatus (Linstow, 1897) (Pharyngodonidae) from Egypt

Pereira

Luque

Tavares

2017

Acta Parasitologica

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Strongyluris oscari Travassos, 1923, parasite of Topidurus torquatus (Wied-Neuwied, 1820) (Tropiduridae) from Brazil and Pharyngodon mamillatus (Linstow, 1897) of Chalcides ocellatus (Forskal, 1775) (Scincidae) from Egypt, were redescribed based on light and scanning electron microscopy, and re-evaluation of specimens from parasitological collections. The following features were accurately observed in S. oscari for the first time: structure of lips and pharyngeal valve, presence and distribution of somatic papillae, number and arrangement of caudal papillae, presence of inner sclerotised structures supporting the ventral sucker and the ventral region in tail of males, and structure of the posterior anal lip in females. The unpaired papilla on the inferior edge of the ventral sucker in males of S. oscari is a cuticular groove instead of a true papilla. Regarding the morphology of P. mamillatus the following features were given in details for the first time: structure of the cephalic end in both male and female, location of amphids, position of phasmids in females and the accurate morphology of caudal bursa in males, including the distribution of caudal papillae and the genital cone morphology. Strongyluris oscari and P. mamillatus have no intraspecific morphological variations, but wide range on biometric features. These variations may be accounted by host/environment attributes, since they exhibit wide host and geographical spectra. The present results increased the morphological knowledge of P. mamillatus and S. oscari, strengthening their taxonomic validity.

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A New Species ofStrongyluris(Nematoda: Heterakidae) from the Lizard,Lophognathus temporalis(Sauria: Agamidae) from Papua New Guinea

Cited by 2 publications

References 10 publications

Morphological and molecular genetic diversity of Strongyluris calotis (Nematoda: Ascaridida: Heterakidae) in South East and East Asian lizards

Morphological and molecular genetic diversity of Strongyluris calotis (Nematoda: Ascaridida: Heterakidae) in South East and East Asian lizards

Redescription of the nematode parasites of lizards: Strongyluris oscari Travassos, 1923 (Heterakidae) from Brazil and Pharyngodon mamillatus (Linstow, 1897) (Pharyngodonidae) from Egypt

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