Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes

Descriptions of two new families – Polysporoplasmidae fam. n. (Syn. Sphaerosporidae Davis, 1917 in Sitja-Bobadilla, Alvarez-Pellitero, 1995) and Gadimyxidae fam. n. (syn. Parvicapsulidae Schulman, 1953 in Køie et al., 2007), and one new species of myxosporeans – Gadimyxa ovale sp. n. – parasites of...

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Автор: Yurakhno, V.M.
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Опубліковано: Інститут зоології ім. І.І. Шмальгаузена НАН України 2011
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Цитувати:Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes / V.M. Yurakhno // Вестник зоологии. — 2011. — Т. 45, № 6. — С. 555–559. — Бібліогр.: 16 назв. — англ.

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spelling irk-123456789-658422014-07-04T03:01:46Z Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes Yurakhno, V.M. Краткие сообщения Descriptions of two new families – Polysporoplasmidae fam. n. (Syn. Sphaerosporidae Davis, 1917 in Sitja-Bobadilla, Alvarez-Pellitero, 1995) and Gadimyxidae fam. n. (syn. Parvicapsulidae Schulman, 1953 in Køie et al., 2007), and one new species of myxosporeans – Gadimyxa ovale sp. n. – parasites of fishes of the Mediterranean and the Black Seas are presented. Species of the genus Gadimyxa is found for the first time in the Black Sea. Описаны два новых семейства – Polysporoplasmidae fam. n. (син. Sphaerosporidae Davis, 1917 по Sitja-Bobadilla, Alvarez-Pellitero, 1995) и Gadimyxidae fam. n. (син. Parvicapsulidae Schulman, 1953 по Kшie et al., 2007), а также нового вида миксоспоридий – Gadimyxa ovale sp. n. – паразитов рыб Средиземного и Чёрного морей. Вид из рода Gadimyxa впервые заре-гистрирован в Чёрном море. 2011 Article Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes / V.M. Yurakhno // Вестник зоологии. — 2011. — Т. 45, № 6. — С. 555–559. — Бібліогр.: 16 назв. — англ. 0084-5604 http://dspace.nbuv.gov.ua/handle/123456789/65842 593.194:597.2/.5(262+262.5) en Вестник зоологии Інститут зоології ім. І.І. Шмальгаузена НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Краткие сообщения
Краткие сообщения
spellingShingle Краткие сообщения
Краткие сообщения
Yurakhno, V.M.
Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes
Вестник зоологии
description Descriptions of two new families – Polysporoplasmidae fam. n. (Syn. Sphaerosporidae Davis, 1917 in Sitja-Bobadilla, Alvarez-Pellitero, 1995) and Gadimyxidae fam. n. (syn. Parvicapsulidae Schulman, 1953 in Køie et al., 2007), and one new species of myxosporeans – Gadimyxa ovale sp. n. – parasites of fishes of the Mediterranean and the Black Seas are presented. Species of the genus Gadimyxa is found for the first time in the Black Sea.
format Article
author Yurakhno, V.M.
author_facet Yurakhno, V.M.
author_sort Yurakhno, V.M.
title Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes
title_short Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes
title_full Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes
title_fullStr Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes
title_full_unstemmed Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes
title_sort two new families and a new species of myxosporeans (myxozoa, myxosporea) from the mediter­rane­an and black sea fishes
publisher Інститут зоології ім. І.І. Шмальгаузена НАН України
publishDate 2011
topic_facet Краткие сообщения
url http://dspace.nbuv.gov.ua/handle/123456789/65842
citation_txt Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter­rane­an and Black Sea Fishes / V.M. Yurakhno // Вестник зоологии. — 2011. — Т. 45, № 6. — С. 555–559. — Бібліогр.: 16 назв. — англ.
series Вестник зоологии
work_keys_str_mv AT yurakhnovm twonewfamiliesandanewspeciesofmyxosporeansmyxozoamyxosporeafromthemediterraneanandblackseafishes
first_indexed 2025-07-05T16:13:24Z
last_indexed 2025-07-05T16:13:24Z
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fulltext UDC 593.194:597.2/.5(262+262.5) TWO NEW FAMILIES AND A NEW SPECIES OF MYXOSPOREANS (MYXOZOA, MYXOSPOREA) OF THE MEDITERRANEAN AND BLACK SEA FISHES V. M. Yurakhno Institute of Biology of the Southern Seas of NAS of Ukraine, Nakhimov Av., 2, Sevastopol, 99011 Ukraine E-mail: viola_taurica@mail.ru Received 18 August 2010 Accepted 10 November 2011 Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) from the Mediter rane - an and Black Sea Fishes. Yurakhno V. M. – Descriptions of two new families – Polysporoplasmidae fam. n. (Syn. Sphaerosporidae Davis, 1917 in Sitja-Bobadilla, Alvarez-Pellitero, 1995) and Gadimyxidae fam. n. (syn. Parvicapsulidae Schulman, 1953 in Køie et al., 2007), and one new species of myxosporeans – Gadimyxa ovale sp. n. – parasites of fishes of the Mediterranean and the Black Seas are presented. Species of the genus Gadimyxa is found for the first time in the Black Sea. Ke y wo r d s: Myxosporea, Polysporoplasmidae fam. n., Gadimyxidae fam. n., Gadimyxa ovale sp. n., fishes, Mediterranean, Black Sea. Äâà íîâûõ ñåìåéñòâà è íîâûé âèä ìèêñîñïîðèäèé (Myxozoa, Myxosporea) èç ðûá Ñðåäèçåìíîãî è ×åðíîãî ìîðåé. Þðàõíî Â. Ì. – Îïèñàíû äâà íîâûõ ñåìåéñòâà – Polysporoplasmidae fam. n. (ñèí. Sphaerosporidae Davis, 1917 ïî Sitja-Bobadilla, Alvarez-Pellitero, 1995) è Gadimyxidae fam. n. (ñèí. Parvicapsulidae Schulman, 1953 ïî Køie et al., 2007), à òàêæå íîâîãî âèäà ìèêñîñïîðèäèé – Gadimyxa ovale sp. n. – ïàðàçèòîâ ðûá Ñðåäèçåìíîãî è ׸ðíîãî ìîðåé. Âèä èç ðîäà Gadimyxa âïåðâûå çàðå-ãèñòðèðîâàí â ׸ðíîì ìîðå. Êëþ÷åâûå ñ ëîâ à: ìèêñîñïîðèäèè, Polysporoplasmidae fam. n., Gadi-myxidae fam. n., Gadimyxa ovale sp. n., ðûáû, Ñðåäèçåìíîå ìîðå, ׸ðíîå ìîðå. Our investigations of myxosporean fauna of mullets (family Mugilidae) in the Black and Mediterranean seas showed that attribution of Polysporoplasma mugilis Sitja-Bobadilla et Alvarez-Pellitero, 1995 (Sitja- Bobadilla, Alvarez-Pellitero, 1995) to the family Sphaerosporidae Davis, 1917 was a mistake. The genus Polysporoplasma Sitja-Bobadilla et Alvarez-Pellitero, 1995 presented now by two species forms a new family Polysporoplasmidae fam. n. Our study of myxosporeans from Mediterranean Sea burbot Gaidropsarus mediterraneus in the Black Sea revealed a new species – Gadimyxa ovale sp. n. Representative of this genus was found for the first time in the Black Sea. Material and methods Mullets were purchased in June 2004 and May 2005 at local fish markets from two localities in the Spanish Mediterranean, namely, from the Ebro River delta and Santa Pola Bay and in June 2004 from Yuzhnaya Bay of Sevastopol (the Black Sea, Ukraine; caught with a fishing rod). Myxosporeans of mullets were taken from alive or freshly frozen fish. Mediterranean Sea burbot Gaidropsarus mediterraneus (Linnaeus) was received from fishermen of the fishing brigade of the Institute of Biology of the Southern Seas of NASU, from Sevastopol bays of the Black Sea during October, November, and December of 2002—2004. Myxosporeans of the Mediterranean Sea burbot were taken only from alive fish. A total of 246 specimens belonging to three species of Mediterranean mullets were examined: thin-lip mullet Liza ramada (Risso, 1826) (207 specimens), golden grey mullet Liza aurata (Risso, 1810) (36 specimens) and thick-lip grey mul- let Chelon labrosus (Risso, 1827) (3 specimens). Totally 9 specimens of L. aurata and 40 specimens of G. mediterraneus were examined from the Black Sea. All tissues and organs of fish were examined for myx- osporean infections. The studies of spores and plasmodia were conducted either directly on alive material or Vestnik zoologii, 45(6): 555—559, 2011 Êðàòêèå ñîîáùåíèÿ on gelatine-glycerine slides using the phase-contrast device (Donets, Shulman, 1973). Spores were pho- tographed and measured on digital images. Descriptions of the spores were based on the guidelines of Lom and Dykova (1992) and Schulman et al. (1997) taking into account modern classification of Myxozoan par- asites (Lom, Dykova, 2006). POLYSPOROPLASMIDAE Yurakhno, fam. n. Type genus: Polysporoplasma Sitja-Bobadilla et Alvarez-Pellitero, 1995 Myxosporeans of the order Bivalvulida Schulman, 1959, the suborder Variisporina Lom et Noble, 1984 with very big spores and polar capsules of spherical or subspheri- cal shape. There are two polar capsules, equal in size, located on the anterior pole of the spore on the sides of sutural line. Sutural line is straight. The spores are character- ized by very great thickness of valves, thickest at the anterior and posterior poles of the spore. There are two distinct bulges or horns (one on each valve) at the posterior pole of the spore in front view. Presence of several (from 4 to 12) uninucleate sporoplasms in a spore is the most prominent peculiarity of the family. Vegetative forms are two- spore and polyspore plasmodia of round and oval form. One genus, Polysporoplasma, and two species, P. sparis Sitja-Bobadilla, Alvarez-Pellitero, 1995 and P. mugilis Sitja- Bobadilla, Alvarez-Pellitero, 1995 are known. Parasites on the sea fish kidneys. Polysporoplasma mugilis Sitja-Bobadilla et Alvarez-Pellitero, 1995 (fig. 1, 2) Ho s t s. In the Mediterranean Sea: thinlip grey mullet Liza ramada (Risso), gold- en grey mullet L. aurata (Risso), thicklip grey mullet Chelon labrosus Risso; in the Black Sea: L. aurata (Risso) (fam. Mugilidae). S i t e: kidneys. Lo c a l i t y a nd t ime o f r e v e a l i n g. Mediterranean Sea: Spain, river Ebro Delta, June 2004: in 2 of 37 (prevalence – 5 %) of studied L. ramada with general length (L) 41—42.5 ñm; in 1 of 36 (3 %) of studied L. aurata with length 32.5 ñm; May 2005: in 2 of 109 (2 %) of studied L. ramada with length 39.2—39.8 ñm, and in 1 of 3 C. labrosus; Santa Pola – in 3 of 61 (prevalence – 8 %) L. ramada with length 34—35 ñm; Black Sea: Sevastopol, Yuzhnaya bay, June 2004: in 1 of 9 of studied L. aurata with length 21.7 ñm. The size of P. mugilis spores from fresh smears of L. ramada kidney appeared to be a bit differing from that in the first description. The length of spores was 18.0*—22.0, width of spores 16.0—19.5, thickness of spores 16.5, diameter of polar capsules 5.5—6.0. Polar thread formed 4 spires. 556 V. M. Yurakhno Fig. 1—2: 1 – Plasmodium of Polysporoplasma mugilis with spores. 2 – Spores of Polysporoplasma mugilis. Ðèñ. 1—2: 1 – Ïëàçìîäèé Polysporoplasma mugilis ñî ñïîðàìè. 2 – Ñïîðû Polysporoplasma mugilis. * All measurements in micrometers (μm) unless otherwise indicated. Liza ramada and C. labrosus are found to be new hosts for P. mugilis in the Mediterranean Sea. In the Black sea, P. mugilis is a new species for the local fauna (Ovcharenko, Jurakhno, 2006; Ovcharenko et al., 2007; Yurakhno, 2008; Yurakhno, Ovcharenko, 2008). GADIMYXIDAE Yurakhno, fam. n. Type genus: Gadimyxa Køie, Karlsbakk et Nylund, 2007 Myxosporeans of the order Bivalvilida, the suborder Variisporina, with spores of semicircular or oval, transversally elongated shape, sometimes (sub) spherical. Anterior spore pole is often flattened. Valves are smooth, without protrusions, non-engraved. The sutural line is thin, strait or weakly curved. It is characteristic, that when seen from the front the line goes over the anterior and posterior spore poles horizontally, but not vertically, as in the representatives of Leptotheca Thélohan, 1895 (Thélohan, 1895) and Ceratomyxa Thélohan, 1892 (Thélohan, 1892), in which the spore shape is similar to that in Gadimyxa (Køie et al, 2007). Presence of the spindle-shaped bulge surrounding polar capsules and located along the sutural line is another peculiarity of the family rep- resentatives. This bulge is not always seen on the spores from the fresh smears. Two polar capsules of rounded shape and not of big size are located at the anterior spore pole and open near the sutural line. There is one sporoplasm, it has two nuclei and dis- tributed all over the spore plane under the polar capsules. Vegetative forms are round- ed, oval or elongated two-spore, coarse-grained plasmodia, sometimes with one end sharpened, with well seen pseudopodia. Parasites of the sea fish urinary bladder. The family contains one genus Gadimyxa and four species – G. atlantica Køie, Karlsbakk et Nylund, 2007, G. sphaerica Køie, Karlsbakk et Nylund, 2007, G. arctica Køie, Karlsbakk et Nylund, 2007 (Køie et al., 2007) and G. ovale sp. n. Diagnosis of the genus Gadimyxa corresponds to the diagnosis of the family. Gadimyxa ovale Yurakhno, sp. n. (figs 3, 4) Ho s t: Mediterranean Sea burbot Gaidropsarus mediterraneus (Linnaeus) (fam. Gadidae). S i t e: urinary bladder. Lo c a l i t y a nd t ime o f r e v e a l i n g: Black sea, Sevastopol (Karantinnaya Bay – November 2002: in 2 of 6 studied fishes; October 2004: in 3 of 11, November 2004: in 2 of 5, December 2004: in 1 of 2. Martynova Bay – December 2002: in 3 of 3. Alexandrovskaya Bay – October 2003: in 4 of 13 studied fishes). Syntypes: slides N 1, 9, 30, 32, BAS 6, BAS 5. Syntypes of Gadimyxa ovale sp. n. are deposited in the collection of the Department of Ecological Parasitology of IBSS, NAS of Ukraine (Sevastopol). Vegetative forms: rounded, oval and wide—oval bisporous plasmodia, sometimes with one sharpened end, with coarse-grained endoplasma, with many well seen pseu- dopodia, 0.5— 2.0 long. Size of plasmodia 10.5 × 12.5, 9.7 × 17.0, 27.0 × 34.0. Spores are elongated, oval, smooth. Polar capsules are rounded, small, situated at front spore pole and opening near the sutural line. Sutural line is thin, slightly curved. The line observed from the front is situated horizontally, over the anterior and poste- rior spore poles. Sporoplasm is distributed all over the spore plane under the polar cap- sules. Measurements of the spores are given in table 1. The general length (L) of infected fish was 20.0—27.5 ñm. Single specimens were observed in the smears. D i f f e r e n t i a l d i a g no s i s. Gadimyxa ovale sp. n. is similar to the three other species of the genus Gadimyxa (Køie et al., 2007) from Gadiidae fish – Atlantic cod Gadus morhua L. (Gadidae) from the Øresund, Denmark, western Norway (G. atlanti- 557Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea)... ca and G. sphaerica) and Arctogadus glacialis (Peters) from Greenlandic seas (G. arcti- ca). G. ovale sp. n. vegetative stages have rounded or oval and wide—oval shape, where- as other species of this genus have elongated or spherical shape. The spores of G. ovale sp. n. differ by their shape and size from those of G. atlantica, G. sphaerica and G. arc- tica. Semicircular shape of the spores occurs rarely, spherical shape was not found. Length of the spores of G. ovale sp. n. is larger than in G. atlantica and smaller than in G. sphaerica and G. arctica. Spores of Gadimyxa ovale sp. n. are wider and with thick- er valves than in G. sphae rica, with considerably smaller polar capsule diameter than in other Gadimyxa species. Discussion Very large size of Polysporoplasma mugilis spores and polar capsules, very great thickness of its valves, thickest at the anterior and posterior poles of the spore, two well seen bulges or horns at the posterior pole of the spore in front view, several (from 4 to 12) uninucleate sporoplasms in the spore, very big size and unusual form of vegetative stages are the evidence of this genus uniqueness, in contrast to other representatives of Sphaerosporidae; this set of features supports the existence of a separate myxosporean family Polysporoplasmidae. 558 V. M. Yurakhno Fig. 3—4. 3 – Plasmodia and spores of Gadimyxa ovale sp. n.: a, b, c – plasmodia with different forms and sizes; d, e, f – spores. 4 – Spore of Gadimyxa ovale sp. n. Ðèñ. 3—4. 3 – Ïëàçìîäèè è ñïîðû Gadimyxa ovale sp. n.: a, b, c – ïëàçìîäèè ðàçíûõ ôîðì è ðàçìå- ðîâ; d, e, f – ñïîðû. 4 – Ñïîðà Gadimyxa ovale sp. n. Ta b l e 1. The size of Gadimyxa ovale sp. n. spores on the fresh and fixed preparations Ò à á ëèö à 1. Ðàçìåðû ñïîð Gadimyxa ovale sp. n. íà ñâåæèõ è ôèêñèðîâàííûõ ìàçêàõ Size of spores and polar capsules Fresh smears Gelatine-glycerine preparations Length of spores 5.3—6.5 5.4—6.6 Width of spores 8.7—9.2 6.5—8.4 Thickness of spores 6.0 Diameter of polar capsules 1.2 1.2—1.3 (1.5) Differences in Gadimyxa ovale sp. n. size and the shape of the spores in compari- son with other species of this genus prove the validity of this new species. Attribution of G. ovale sp. n. and other Gadimyxa spp. to the family Parvicapsulidae we consider to be erroneous, as the shape of typical representatives of this family differs complete- ly from that characteristic for Gadimyxa genus. We presume it was the molecular stud- ies that demonstrated the affinities between Parvicapula and Gadimyxa inhabiting the same organ – the urinary bladder. Similar situation occurred in the case of Pseudokudoa trifolia Holzer, Blasco-Costa, Sarabeev, Ovcharenko et Balbuena, 2006 (Holzer et al., 2006): the molecular-biological data have shown very high similarity of this species to Kudoa unicapsula Yurakhno, Ovcharenko, Holzer, Sarabeev et Balbuena, 2007 (Yurakhno et al., 2007), which is completely different morphologically, but occurs in the same organs – intestine mesenterium and pyloric appendage of the same hosts, Liza ramada and L. aurata (Yurakhno, 2007). Donets Z. S., Shulman S. S. About methods of Myxosporidia (Protozoa, Cnidosporidia) studied // Parasitology. – 1973. – 7, fasc. 2. – P. 191—193. Gaevskaya A. V., Kovaleva A. A., Schulman S. S. New genus Neoparvicapsula and the state of Parvicapsulidae in Myxosporidia system // Zool. Journ. – 1982. – 61, fasc. 5. – P. 774—777. Holzer A. S., Blasco-Costa I., Sarabeev V. L. et al. Kudoa trifolia sp.n. – molecular phylogeny suggests a new spore morphology and unusual tissue location for a well-known genus // J. Fish Dis. – 2006. – 29. – P. 743—755. Køie M., Karlsbakk E., Nylund A. A new genus Gadimyxa with three new species (Myxozoa, Parvicapsulidae) parasitic in marine fish (Gadidae) and the two-host life cycle of Gadimyxa atlantica n. sp. // J. Parasitol. – 2007. – 93, N 6. – P. 1459—1467. Lom J., Dykova I. Protozoan parasites of fishes. Developments in Aquaculture and Fisheries sciences. – Amsterdam ; London ; New York ; Tokyo : Elsevier, 1992. – P. 160—235. Lom J., Dykova I. Myxozoan genera: definition and notes on taxonomy, life-cycle terminology and pathogenic species // Folia parasitologica. – 2006. – 53. – P. 1—36. Schulman S. S., Donets Z. S., Kovaleva A. A. Class of myxosporeans (Myxosporea) of the world fauna. – St. Petersburg : Nauka, 1997. – 567 p. – Vol. 1. – Russian : Øóëüìàí Ñ. Ñ., Äîíåö Ç. Ñ., Êîâàëå âà À. À. Êëàññ ìèêñîñïîðèäèé ìèðîâîé ôàóíû. Sitja-Bobadilla A., Alvarez-Pellitero P. Light and electron microscopic description of Polysporoplasma n. g. (Myxosporea: Bivalvulida), Polysporoplasma sparis n. sp. from Sparus aurata (L.), and Polysporoplasma mugilis n. sp. from Liza aurata L. // Europ. J. Protistol. – 1995. – 31. – P. 77—89. Ovcharenko M., Jurakhno V. Nowe dane o mikropasożytach ryb z rodziny cefalowatych (Mugilidae) // XX Zjazd Hydrobiologόw Polskich (5—8 września 2006, Toruń, Polska). – Toruń, 2006. – P. 160. Ovcharenko M., Yurakhno V., Tytar V. Review of microparasites of mullets in the Mediterranean basin and the Sea of Japan // Revista Romănă de Parasitoilogie. – 2007. – Suppl. 17. – P. 142—143. Thélohan P. Observation sur les myxosporidies et éssai de classification de ces organismes // Bull. Soc. Philom. – 1892. – 4. – P. 165 —178. Thélohan P. Recherches sur les Myxosporidies // Bull. Sci. Fr. Belg. – 1895. – 26. – P. 100—394. Yurakhno V. M. About validity of Kudoa trifolia Holzer et al., 2006 (Myxosporea: Multivalvulida) // Parassitologia. – 2007. – Vol. 49, Suppl. 2. – P. 172. – (7th International Symposium on Fish Parasites, Viterbo, Italy, 24—28 September 2007). Yurakhno V. M. The results of the Black sea fish myxosporeans biodiversity studies // Importance and per- spectives of the stationary investigations for preservation of biodiversity: Materials of the international scientific conference, devoted to the 50-th anniversary of functioning stationary “Pozhizhevska” (Lvov; Pozhizhevska, September 23—27, 2008). – Lvov, 2008. – P. 455. Yurakhno V. M., Ovcharenko N. A. Myxosporeans of mullets in the World Ocean // Materials of the IV All- Russia Meeting of the Parasitological society under Russian Academy of Sciences, which took place on October 20—25, 2008, in Zoological institute of the Russian Academy of Sciences in St.Petersburg: “Parasitology in XXI century – problems, methods, solutions”. – Vol. 3 / Ed. K. V. Galaktionov, A. A. Dobrovolsky. – St.Petersburg: Lema, 2008. – P. 231—234. Yurakhno V. M., Ovcharenko M. O., Holzer A. S. et al. Kudoa unicapsula n. sp. (Myxosporea: Kudoidae) a parasite of the Mediterranean mullets Liza ramada and L. aurata (Teleostei: Mugilidae) // Parasitol. 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