Strigea falconis brasiliana Szidat, 1929,

Lunaschi, Lía I. & Drago, Fabiana B., 2006, Strigeid parasites of the roadside hawk, Buteo magnirostris (Aves: Falconiformes), from Argentina, Zootaxa 1106, pp. 25-33: 30-31

publication ID

http://doi.org/ 10.5281/zenodo.171438

publication LSID

lsid:zoobank.org:pub:03E062CE-A606-42AC-BF53-EDD67BA996CE

persistent identifier

http://treatment.plazi.org/id/7025E66D-FFCA-FFD4-5912-FEA1FCEAABA2

treatment provided by

Plazi

scientific name

Strigea falconis brasiliana Szidat, 1929
status

 

Strigea falconis brasiliana Szidat, 1929  ( Figs. 4–5View FIGURES 1 – 5)

Site of infection: small intestine.

Material deposited: in Helminthological Collection MLP 5506. Prevalence: 1 of 4 (25 %).

Intensity of infection: 2 (2).

Description

Based on 2 specimens. Body distinctly bipartite; 1.305–1.392 mm in total length. Forebody cup­shaped, 319–415 x 314–367 clearly separated from hindbody and covered with minute tegumental spines. Oral sucker subterminal, 76 x 55. Ventral sucker 152–162 x 71 –105. Suckers width ratio 1.9. Holdfast organ lobes reaching to anterior margin of forebody with compact proteolytic gland at base of forebody. Hindbody with tegument smooth, 2.1–3.4 times longer than forebody, 0.890–1.073 x 0.362–0.435 mm. Prepharynx short; pharynx well developed, 74 x 48; intestinal caeca reaching copulatory bursa. Ratio of pharynx length to oral sucker length 1.1.

Testes tandem, large, lobated, in the posterior middle hindbody; anterior testis 169– 227 x 174–190; posterior testis 197–217 x 179–241. Ovary reniform, 59– 68 x 101–107. Laurer’s canal short, opening in the dorsal surface in ovary­testicular region; Mehlis’ gland intertesticular. Vitellarium follicular, densely distributed in hindbody; in forebody reaching to ventral sucker; in hindbody occupying its whole width in preovarian region and extending dorsally to copulatory bursa. Vitelline reservoir intertesticular. Uterus with 3 and 5 large eggs, 82–88 x 48 –52. Copulatory bursa 183–241 x 215–226, with muscular ring (Ringnapf) well developed and genital cone, 128–167 x 129–143. Ratio of genital cone width to ovary width 1.2–1.4. Genital pore terminal. Excretory vesicle and pore not seen.

Remarks

Strigea falconis Szidat, 1928  is a cosmopolitan species including three subspecies: S. falconis falconis Viborg, 1795  , has a Holarctic and Ethiopic distribution, S. falconis mcgregori Tubangui, 1932  occurs in the Oriental region, and S. falconis brasiliana Szidat, 1929  in the Neotropical region. The latter subspecies was first reported, but not described, as Strigea falconis  var. brasiliana  by Szidat (1929) from specimens collected by Natterer in Buteo albicaudatus Vieillot  , B. magnirostris  , Herpetotheres cachinnans (Linnaeus)  , Caracara plancus (Miller)  and Spizaetus ornatus (Daudin)  ( Falconiformes  ) from Brazil. Pérez Vigueras (1944, 1955) described it as Strigea falconis  from Buteo jamaicensis umbrinus Bangs  from Cuba. Dubois (1968) redescribed it as Strigea falconis brasiliana  on the basis of the specimens collected by Natterer, and Dubois and Macko (1972) reported it from Buteo platypterus cubanensis Burns  from Cuba.

The specimens described by Dubois (1968) differ from those described in the present study by having a larger size (hindbody, 1.1–1.8 mm; oral sucker, 100–125 x 85 –115; ovary, 110–200 x 175–300; anterior testis 235 x 410; posterior testis 275–370 x 235–420; genital cone, 240–350 x 230–310), however, the egg size and the ratios of hindbody to forebody length and genital cone to ovary width, are similar. The smaller size of the two specimens described in this paper, relative to those described from Brazil, could be related to intraspecific variations in the developmental stage of the parasite.

Strigea falconis brasiliana  differ from S. magniova  by the presence of tegumental spines in the forebody and a well developed Ringnapf, by the distribution of the vitelline follicles in the forebody and by the size of its body, pharynx, ventral sucker and eggs.

The record of S. falconis brasiliana  from B. magnirostris  represents the first report of this parasite in Argentinean birds and has enabled us to augment the original description with new morphological and morphometrical data.

MLP

Museo de La Plata

Kingdom

Animalia

Phylum

Platyhelminthes

Class

Trematoda

Order

Diplostomida

Family

Strigeidae

Genus

Strigea

Loc

Strigea falconis brasiliana Szidat, 1929

Lunaschi, Lía I. & Drago, Fabiana B. 2006
2006
Loc

S. falconis mcgregori

Tubangui 1932
1932
Loc

S. falconis brasiliana

Szidat 1929
1929
Loc

Strigea falconis

Szidat 1928
1928
Loc

S. falconis falconis

Viborg 1795
1795