Aplectana artigasi n.sp. (Nematoda: Cosmocercidae) from the Frog Eupsophus calcaratus (Anura: Leptodactylidae) in Southern Chile

Puga, S; Torres, Patricio

doi:10.1590/s0074-02761997000600007

Cited by 5 publications

(5 citation statements)

References 7 publications

(6 reference statements)

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“…(104-111 vs. 322-364, respectively) and have a shorter distance from the vulva to the anterior end (0.6-2 mm vs. 2.3-3.3 mm, respectively). We also observed that the eggs in the new species are smaller than those in A. artigasi (54-67 × 33-43 vs. 69−124 × 41−82.8, respectively) (Puga & Torres, 1997).…”

Section: Remarkssupporting

confidence: 48%

A new species of Aplectana Railliet & Henry, 1916 (Nematoda: Cosmocercidae) in the Brazilian Amazon and the taxonomic status of Aplectana longa

Santos,

Borges,

Willkens

et al. 2023

Rev. Bras. Parasitol. Vet.

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Nematodes of the genus Aplectana Railliet & Henry, 1916 are common parasites of the digestive tract of amphibians and reptiles in the Neotropical region. During a parasite survey on Boana boans (Linnaeus, 1758), we found specimens of nematodes with Aplectana characteristics. We observed a set of characteristics that differs the species of our study from its congeners, and the present study describes a new species of Aplectana parasite of B. boans using light microscopy and scanning electron microscopy. Aplectana pella n. sp. has lateral alae and somatic papillae in males and females; males have equal short spicules, and the gubernaculum is absent. The arrangement of pairs of caudal papillae also differs from other species (2 precloacal,1 adcloacal, and 5 postcloacal+1 unpaired). In females, the vulva is simple, with non-prominent lips, and equatorial. This is the first record of the genus Aplectana parasitizing B. boans and the 58th species described for this genus. Additionally, we added the precloacal papillae pattern of A. delirae, and based on morphological and morphometric characteristics, we propose the reallocation of Aplectana longa to the genus Oxyascaris.

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Section: Remarkssupporting

confidence: 48%

A new species of Aplectana Railliet & Henry, 1916 (Nematoda: Cosmocercidae) in the Brazilian Amazon and the taxonomic status of Aplectana longa

Santos,

Borges,

Willkens

et al. 2023

Rev. Bras. Parasitol. Vet.

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“…In the genus Aplectana, A. akhrami (Islam, Farooq & Khanum, 1979), A. artigasi Puga & Torres, 1997, A. chilensis Lent & Freitas, 1948, A. crossodactyli Baker, 1980, A. crucifer Travassos, 1925, A. delirae (Fabio, 1971) Lent & Freitas, 1948, A. papillifera (Araujo, 1977), A. praeputialis (Skrjabin, 1916), A. tarija Ramallo, Bursey & Goldberg, 2007, and A. vercammeni Le Van Hoa, 1962, have no gubernaculum [20,22,[25][26][27][28][29][30][31][32][33][34][35] Currently, the specific diagnosis of Aplectana spp. remains based on morphology, and the genetic data of these parasites are severely limited.…”

Section: Discussionmentioning

confidence: 99%

Description of a new species of Aplectana (Nematoda: Ascaridomorpha: Cosmocercidae) using an integrative approach and preliminary phylogenetic study of Cosmocercidae and related taxa

Chen

et al. 2021

Parasites Vectors

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Background Nematodes of the family Cosmocercidae (Ascaridomorpha: Cosmocercoidea) are mainly parasitic in the digestive tract of various amphibians and reptiles worldwide. However, our knowledge of the molecular phylogeny of the Cosmocercidae is still far from comprehensive. The phylogenetic relationships between Cosmocercidae and the other two families, Atractidae and Kathlaniidae, in the superfamily Cosmocercoidea are still under debate. Moreover, the systematic position of some genera within Cosmocercidae remains unclear. Methods Nematodes collected from Polypedates megacephalus (Hallowell) (Anura: Rhacophoridae) were identified using morphological (light and scanning electron microscopy) and molecular methods [sequencing the small ribosomal DNA (18S), internal transcribed spacer 1 (ITS-1), large ribosomal DNA (28S) and mitochondrial cytochrome c oxidase subunit 1 (cox1) target regions]. Phylogenetic analyses of cosmocercoid nematodes using 18S + 28S sequence data were performed to clarify the phylogenetic relationships of the Cosmocercidae, Atractidae and Kathlaniidae in the Cosmocercoidea and the systematic position of the genus Aplectana in Cosmocercidae. Results Morphological and genetic evidence supported the hypothesis that the nematode specimens collected from P. megacephalus represent a new species of Aplectana (Cosmocercoidea: Cosmocercidae). Our phylogenetic results revealed that the Cosmocercidae is a monophyletic group, but not the basal group in Cosmocercoidea as in the traditional classification. The Kathlaniidae is a paraphyletic group because the subfamily Cruziinae within Kathlaniidae (including only the genus Cruzia) formed a seperate lineage. Phylogenetic analyses also showed that the genus Aplectana has a closer relationship to the genus Cosmocerca in Cosmocercidae. Conclusions Our phylogenetic results suggested that the subfamily Cruziinae should be moved from the hitherto-defined family Kathlaniidae and elevated as a separate family, and the genus Cosmocerca is closely related to the genus Aplectana in the family Cosmocercidae. The present study provided a basic molecular phylogenetic framework for the superfamily Cosmocercoidea based on 18S + 28S sequence data for the first time to our knowledge. Moreover, a new species, A. xishuangbannaensis n. sp., was described using integrative approach. Graphical abstract

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“…Furthermore, the male A.macintoshii is smaller in size than that of other species like A. herediaensis (2.5 mm long & 112 um wide), A. artigasi (3.4mm long & 322um wide), A.capensis (2.7mm long), A.degraafi (3.6mm long)and A.Krausi(2.53mm long &152 um wide) as recorded by Bursey et al,(2006), Puga & Torres (1997) and Bursey & Goldberg (2007).…”

Section: Discussionmentioning

confidence: 58%

“…In comparsion to other Aplectana spp., it was observed that female of A. macintoshii is slightly larger in size than that of A. herediaensis (3.1 mm long & 140 um wide) (Bursey et al,2006) and that of A.krausi (3.05 mm long & 234 um wide) (Bursey &Goldberg , 2007) but smaller than that of A. artigasi (5.2 mm & 414.9 um) (Puga &Torres, 1997), and that of A. Capensis (6.4mm long) (Baker, 1981) and that of A. degraafi (4.1 mm long) (Baker,1981). Furthermore, the male A.macintoshii is smaller in size than that of other species like A. herediaensis (2.5 mm long & 112 um wide), A. artigasi (3.4mm long & 322um wide), A.capensis (2.7mm long), A.degraafi (3.6mm long)and A.Krausi(2.53mm long &152 um wide) as recorded by Bursey et al,(2006), Puga & Torres (1997) and Bursey & Goldberg (2007).…”

Section: Discussionmentioning

confidence: 99%

“…The oesophagus has two portions, a long narrow tube which is the oesophageal corpus and a spherical oesophageal bulb. Puga & Torres(1997) recorded in A. artigasi, an oral opening surrounded by one dorsal and two subventral lips. Each lip with a cuticular flap on anterior ridge, cephalic sense organs consisting of inner circle of six minute papillae and a circle of four outer submedian papillae.…”

Section: Discussionmentioning

confidence: 99%

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Light and scanning electron microscope studies on the nematode Aplectana macintoshii Travassos,1931(Ascaridida:Cosmocercidae) infecting the toad Bufo regularis in Egypt.

Kabbany

Sharaf

Salam

2009

Egypt. J. of Aquatic Biolo. and Fish.

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ABSTRACTplectana macintoshii Travassos,1931 from the intestine of Bufo regularis was described and illustrated. A. macintoshii adult worms are small dieocious nematodes. Males are distinguishable from females by their smaller size, long slender curved posterior end and accessory copulatory structures with two equal spicules. Cuticle with longitudinal and circular annulations and somatic papillae. Mouth is small opening surrounded by three lips. Each lip bears two conspicuous papillae. The alimentary canal is composed of mouth that leads to oesophageal corpus, oesophageal bulb, intestine and rectum. The reproductive system of A. macintoshii is tubular. Females have two genital tubes that are distinguished into two ovaries, oviducts, uteri which join to form a single vagina which opens to the exterior through the vulva that lies near the anterior end of the body. The male genital tube consists of a blind-ending testis, seminal vesicle, vas deferens and the ejaculatory duct which opens into the rectum via the cloaca. The genital tubes of these parasitic nematoades are twisted around the intestine.

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Aplectana artigasi n.sp. (Nematoda: Cosmocercidae) from the Frog Eupsophus calcaratus (Anura: Leptodactylidae) in Southern Chile

Cited by 5 publications

References 7 publications

A new species of Aplectana Railliet & Henry, 1916 (Nematoda: Cosmocercidae) in the Brazilian Amazon and the taxonomic status of Aplectana longa

A new species of Aplectana Railliet & Henry, 1916 (Nematoda: Cosmocercidae) in the Brazilian Amazon and the taxonomic status of Aplectana longa

Description of a new species of Aplectana (Nematoda: Ascaridomorpha: Cosmocercidae) using an integrative approach and preliminary phylogenetic study of Cosmocercidae and related taxa

Light and scanning electron microscope studies on the nematode Aplectana macintoshii Travassos,1931(Ascaridida:Cosmocercidae) infecting the toad Bufo regularis in Egypt.

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