Skrjabinus sp.
publication ID |
https://doi.org/ 10.11646/zootaxa.5357.2.3 |
publication LSID |
lsid:zoobank.org:pub:A8932459-5A17-4812-8557-B9613DE69CEB |
DOI |
https://doi.org/10.5281/zenodo.10018324 |
persistent identifier |
https://treatment.plazi.org/id/03D07B6E-FFF9-0E6D-E0CB-8C5BFBBBF8FE |
treatment provided by |
Plazi |
scientific name |
Skrjabinus sp. |
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Site of infection: Bile ducts
Host species: Heteromys gaumeri
Locality: Hobonil ranch (Yucatan)
Specimens deposited: CNHE 11957
GenBank accession number: OR271635
Comments: The morphology observed in the specimens of this study agrees with the characteristics established for the genus Skrjabinus ( Pojmańska 2008) , i.e., body elongate and fusiform, tegument unspined with acetabulum in anterior third of body, larger than the oral sucker; pharynx well developed and esophagus short, intestinal bifurcation anterior to ventral sucker and caeca reaching the posterior region of the hind body. Testes postero-lateral to ventral sucker. Cirrus-sac extends beyond intestinal bifurcation. Genital pore posterior to the pharynx but anterior to intestinal bifurcation. Ovary rounded, submedian, post-testicular, separated from testes by uterine coils. Uterus intercaecal, occupying entire hind body. Vitelline follicles fine, begin from the middle or from the posterior margin of the ventral sucker and reach the final region of the second third of the body. The main measurements of our specimens were: body length 2825‒3725 and maximum width 875‒1475; oral sucker 300‒350 long by 275‒362.5 wide; pharynx 125‒162.5 long by 137.5‒175 wide; ventral sucker 425‒537.5 long by 437.5‒500 wide; oral sucker/ ventral sucker ratio 1.3‒1.8; and eggs 32.5‒37.5 long by 20‒22.5 wide. The most similar species to our specimens is Skrjabinus delectans (Braun) , parasite of Nothura maculosa (Temminck) from Argentina; however, Sk. delectans exhibits some morphological differences ( Sutton & Lunaschi 1987), such as a shorter oral sucker (vs 160‒200), shorter pharynx (vs 60‒80), lower oral sucker/ventral sucker ratio (vs 1.6‒2.8) and vitellarium not distributed to the last posterior third of the body ( Figure 2B and C View FIGURE 2 ). For this reason, we consider that our specimens may represent a species not described yet.
This is the first record of the genus Skrjabinus in Mexico and for H. gaumeri .
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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