Pronoprymna petrowi Bray & Gibson 1980

• Main Authors: Sokolov, S. G., Shchenkov, S. V., Gordeev, I. I.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Platyhelminthes; Trematoda; Plagiorchiida; Faustulidae; Pronoprymna; Pronoprymna petrowi; Kamchatka; Kamchatka Peninsula
• Online Access: https://doi.org/10.5281/zenodo.5496872; http://treatment.plazi.org/id/C0083640B33BAF3379FBFED7FCE6E6AB

Pronoprymna petrowi (Layman, 1930) Bray & Gibson, 1980 (Figure 1 (b)) Host. Clupea pallasii pallasii. Site of infection. Intestine. Locality. Off eastern shore of Kamchatka Peninsula (59°15ʹ6 N & 163°43ʹ9E) at a depth of 80 m. Prevalence. 15 of 30 host specimens (50%). Intensity of infection. 1–120 worms per host specimen. Deposited material. Two paragenophores (IPEE RAS 14295). Representative DNA sequences. A partial 28S rRNA gene sequence was deposited in Genbank (NCBI) as MT872204. Description (based on a slightly macerated paragenophore). Body fusiform, length 1,018, maximum width 217 at level of ventral sucker, 21.3% of length. Tegument unarmed. Oral sucker cup-shaped, 98 × 126, length 9.6% of body length; oral opening subterminal. Ventral sucker 112 × 112, length 10.9% of body length. Sucker width ratio 1:0.89. Forebody 25.4% of body length. Prepharynx not detected. Pharynx 45 × 39, length 4.5% of body length. Oral sucker to pharynx width ratio 1:0.31. Oesophagus 87, 8.6% of body length. Intestinal bifurcation in posterior quarter of forebody. Caeca terminating at level of testes; post-caecal distance 43.9% of body length. Testes two, entire, opposite, in anterior third of hindbody, separated from ventral sucker; left 116 × 70, length 11.3% of body length; right 105 × 63, length 10.3% of body length. Post-testicular region length 43.9% of body length. Cirrus-sac clavate, thin-walled, extending posteriorly slightly beyond ventral sucker, enclosing bipartite seminal vesicle, very small vesicular pars prostatica, and ejaculatory duct, 126 × 35, length 12.4% of body length. Genital atrium tubular. Genital pore median, anterior to ventral sucker. Ovary trilobed, median, post-testicular, 126 × 88, length 12.4% of body length. Laurer’s canal not detected. Mehlis’ gland anterior to ovary. Uterus filling most of hindbody. Eggs 31 × 17. Vitellarium from two lateral compact oval masses, posterior to ventral sucker, left 91 × 49, length 8.9% of body length, right 70 × 45, length 6.9% of body length. Vitelline ...