(Prosthodendrium) Corberensis N. Sp
Total Page:16
File Type:pdf, Size:1020Kb
Research and Reviews in Parasitology, 51 (1-4): 81-85 (1991) Editorial Fontalba, S.A. © 1993 Asociaci6n de Parasitologos Espanoles Primed in Spain PROSTHODENDRIUM (PROSTHODENDRIUM) CORBERENSIS N. SP. (TREMAlODA: LECITHODENDRIIDAE), A PARASITE OF RHINOWPHUS FERRUMEQUINUM (SCHREBER, 1774) (CHIROPTERA: RHINOLOPHIDAE) IN SPAIN J.G. EsTEBAN, J.L. OLTRA-FERRERO, P. BOTELLA & P. GRANEL Seccion de Parasitologia, Facultad de Farmacia, Universidad de Valencia, Av. Blasco Ibdiiez 13, 46010 Valencia, Spain Received15 May1991; accepted30 May1991 REFERENCE: EsrEBAN (J.G.), OLTRA-FERRERO (J.L.), BOTELLA (P.) & GRANEL (P.), 1991.- Prosthodendrium (Prosthodendriumj corberen- sis n. sp. (Trematoda: Lecithodendriidae), a parasite of Rhinolophusferrumequinum (Schreber, 1774) (Chiroptera: Rhinolophidae) in Spain. Research and Reviews in Parasitology, 51 (1-4): 81-85. ABsTRACT: Description of a new digenean species of the lecithodendriid subgenus Prosthodendrium (Prosthodendrium) Dollfus, 1931, which parasites the duodenum of the Greater horseshoe bat, Rhinolophusferrumequinum (Schreber, 1774) (Chiroptera: Rhinolophidae) in Spain and differentiation from the other known species of the same subgenus parasitizing bats. The ovarian complex and the terminal male organs of this new species are described in detail. KEy WORDS: Prosthodendrium (Prosthodendrium) corberensis n. sp., Trematoda, Lecithodendriidae, Rhinolophus ferrumequinum, Chiroptera, Spain. INTRODUCTION Morphology The body of the digenean is elongated, rounded at both During investigations on the helminth fauna of bats in ends, flattened dorso-ventrally and small (Fig. 1 A, B, Spain (see ESTEBAN, OLTRA-FERRERO& MAS-COMA, C). The body length is 655-1203 /-Im(mean 916 urn) and 1990), some digenean trematodes of the subgenus Pros- its maximum width, midway along the body, 471-724 /-Im thodendrium (Prosthodendrium) Dollfus, 1931 were (581 /-Iffi).The tegument is smooth and unarmed. The ex- found parasitizing the small intestine of two specimens cretory vesicle is V-shaped and the excretory pore is ven- of Greater horseshoe bats. The purpose of this paper is tral, median and subterminal. the detailed description of these parasites and a discus- The suckers are small (Fig. 1 A, B, C). The oral sucker sion of the systematics of the species. is oval or circular, subterminal-terminal, ventral, 86-120174-100 /-Im(104/90 /-Im)in diameter. The ventral sucker or acetabulum is circular, situated on the central METHODS AND TECHNIQUES body axis at pre-equatoriallevel, i.e., at 160-368 /-Im(240 /-Im) from the oral sucker. The acetabulum is slightly Immediately after host dissection, parasite specimens were directly smaller than the oral sucker, 83-108/60-100 /-Im(96/82 fixed with Bouin's fluid between slide and cover-slip, conserved in alcohol 70 070, stained with Grenacher's Boracic Carmine and um). The sucker ratio (surface of the oral sucker/surface mounted in Canada Balsam. Drawings were made using a camera of the acetabulum) is 0,99-1,40 (1,22). lucida. Terminal male organs and ovarian complex were studied us- No prepharynx is present. The pharynx is muscular, ing interference contrast microscopy. 29-54/40-54 /-Im(38/47 um). The oesophagus, 43-165 /-Im (90 /-Iffi)in length, gives rise to two saccular intestinal caeca. Both intestinal caeca are similar in length: the right DESCRIPTION caecum 171-217 /-Im(189 um), and the left one, 177-219 /-Im(195 um). Both extend laterally down to the level of Prosthodendrium (Prosthodendrium) corberensis n. sp, the anterior margin of the testes (Fig. 1 A, B, C). The genital pore is unarmed, ventral, median and it Definitive host: Rhinolophus ferrumequinum (Schreber, opens at the level of the anterior margin of the acetabulum 1774) (Chiroptera: Rhinolophidae). (Fig. 1 F). Location: small intestine, The testes are subespherical to more or less irregulary Locality: Corbera d'Alcira, province of Valencia (Spain). oval (Fig. 1 A, B, C). They are situated at the same Material studied: thirty five mature specimens coming acetabular level, both almost reaching the lateral margins from two host individuals. of the body. The right testis, somewhat larger than the Type specimens: deposited in the collection of the Sec- left, is 165-228/131-208 /-Im(202/172 /-Im).The left testis tion of Parasitology of the Faculty of Pharmacy of is 160-217/131-197 /-Im (188/167 urn). The internal the University of Valencia (Spain). anterolateral margin of each testis gives rise to the cor- Derivatio nominis: specific name after the type locality. responding vas efferens, which run horizontally and lead 82 J.O. ESTEBANet al. to a short vas deferens at mid-body and slightly pre- this genus differ according to authors. Thus, while acetabular level. This vas deferens expands into a highly YAMAGUTl(1971) places it within the subfamily Pro- coiled seminal vesicle of considerable dimensions. This sthodendriinae Yamaguti, 1958, others such as DUBOlS in turn terminates in an ejaculatory duct. Numerous pro- (1955, 1960) and ODENING(1964 a, b) prefer to include static cells form the prostatic gland. The prostatic mass it in the subfamily Lecithodendriinae Looss, 1902. This (called the pseudocirrus pouch by several authors) is last opinion has been accepted by most authors. 125-202l97-1511iffi (157/127 um), and is situated between According to the reviews of DUBOlS(1960, 1963) and the intestinal bifurcation and the acetabulum, displaced the studies of NEILAND(1962), DUBOIS(1964), MITUCH to the right side of the vertical mid-body axis and marked- (1964), ZDZITOWIECKI(1969), GUPTA& MEHTA (1970), ly near the right testis (Fig. 1 F). OROSCHAFT& TENoRA (1971), BLANKESPOOR& ULMER The ovary is oval. It is situated dorsally at an (1972), MATSKASI(1973), SAOUD& RAMADAN(1977), acetabular-postacetabular level. In the specimens studied, MARSHALL& MILLER(1979), KIFUNE(1980), KIFUNE& the ovary was always dextral, at the right side of the SAWADA(1980), FISCHTAL& KUNTZ(1981) and THATcHER acetabulum (Fig. 1 A, C). However, in one specimen, the (1982), a total of 42 species, among which one species with ovary was located in an equatorial position along the ver- two subspecies and another species with two varieties, tical mid-body line, so that its anterior margin slightly have been described up to date within the sub genus Pros- overlapped with the posterior margin of the acetabulum thodendrium (Prosthodendrium). Nevertheless, the (Fig. 1 B). The dimensions of the ovary are 105-191/83-157 systematic validity of each one of these species has not /Am (147/115 um). The vitelline follicles are disposed in been fully accepted by all authors. two lateral dorsal fields at an oesophago-caecal level. Morphological as well as biogeographical aspects allow Follicles are thick and distinctly numerous: 6-10 (8) on easily to differentiate and distinguish the material here the right side and 10-13 (12) on the left side. The vitelline described from all the New World species: P (P) cor- ducts descend transversely between the acetabulum and diforme (Braun, 1900), P (P) macnabi Macy, 1936, P (P) the testes, joining more or less in the middle of the body, swansoni Macy, 1936, P (P) naviculum Macy, 1936, P near the ovary, forming a small vitelline reservoir (Fig. (P) travassosi Macy, 1938, P (P) transversum Byrd et 1 A, B, C). The oviduct widens to give rise to a seminal Macy, 1942, P (P) mehrai var. singularium Byrd et Macy, receptacle divided into two minor receptacles. A Laurer's 1942, P (P) bougerminii Lent, Teixera de Freitas et Pro- canal, as a fine and long structure originating in the enca, 1945, P (P) duboisi Neiland, 1962, P (P) alasken- seminal receptacle and opening on the dorsal body wall, sis Neiland, 1962, P (P) volaticun Blankespoor et Ulmer, is present. The oviduct and the common vitelline duct, 1972, P (P) megovarium Marshall et Miller, 1979 and P coming from the vitelline reservoir, join and the oviduct (P) calimaense Thatcher, 1982 (see BRAUN,1900; MACY, expands slightly to form the ootype, which is surroun- 1936, 1938; BYRD & MACY, 1942; LENT, TEIXERADE ded by the Mehlis' gland. Beyond the ootype, the female FREITAS& PROEN<;A,1945; NEILAND,1962; BLANKESPOOR duct expands to form the uterus (Fig. 1 D, E). & ULMER,1972; MARSHALL&MILLER, 1979; THATcHER, The uterine duct begins at a postacetabular level. The 1982). All these species are specific of bats, with the ex- uterus of gravid specimens, filled with numerous eggs, ception of the last species P (P) calimaense, which occupies almost the whole posterior body region. Some parasitizes marsupials. anterior uterine branches occasionally overlapp the Each of the remaining species are bat-specific parasites posterior testicular margins. The terminal part of the of the Old World, with the exception of P (P) ova tum uterus ascends along the left side of the body, between Simha, 1958 and P (P) rosorum Dubois, 1960, which the left testis and the acetabulum, forming a muscular parasitize lizards in India and rodents in the Republic of metraterm surrounded by glands, finally to open into the Congo, respectively (SIMHA, 1958; DUBOlS, 1960). The genital atrium (Fig. 1 A, B, C, F). general morphology (elongated with rounded extremities) The eggs are numerous, operculate, oval, brownish and the body dimensions (655-1203/471-724 urn) of the yellow, of 20-29/13-17 /Am (25/15 /Am) (Fig. 1 G). Spanish species allow a rapid differentiation from P (P) brachyurna (Groschaft et Tenora, 1971) due to the clear- ly pyriform morphology, from P (P) parvouterus DISCUSSION (Bhalerao, 1926) because