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  • 1
    Electronic Resource
    Electronic Resource
    Comparison of digenean faunas of sillaginid fishes from inshore and offshore waters of Visakhapatnam Coast, Bay of Bengal (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 36 (1990), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The sillaginid fishes of Visakhapatnam Coast, Bay of Bengal, are found to be hosts for 16 species of digeneans of which seven are adult digeneans belonging to families Opecoelidae, Zoogonidae and Hemiuridae and nine are larval digeneans representing families Bucephalidae, Heterophyidae, Cryptogonimidae, Acanthocolpidae, Hemiuridae and Didymozoidae. The digenean fauna of sillaginid fishes from shallow coastal waters (〈 10 m depth) and deeper offshore waters (30–50 m depth) are compared and results are discussed in the light of existing information on the migratory movements of different species of sillaginids and their occurrence in coastal or offshore waters. The usefulness of metacercariae of these fishes as ‘biological tags’ is considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1990.tb04323.x
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison of the parasitic fauna of Aplocheilus panchax and A. melastigma (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 17 (1980), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The metazoan parasite fauna of two species of freshwater fishes Aplocheilus panchax and A. melastigma collected from a stream at Waltair is compared; 17 parasite species were found. Aplocheilus panchax served as a host to 13 parasite species and A. melastigma to 10 parasite species. Of the 17 parasites collected, 12 were larval helminths to which the fishes act as intermediate and paratenic hosts. This has been attributed to the interaction between terrestrial birds, mammals and fishes in determining the parasite fauna in the biocoenosis. The parasite fauna of these fishes is divided into typical and less typical according to their frequencies. Among less typical there are peripheral division parasites which are abundant in other fishes in the stream. Only six parasite species occurred in both A. panchax and A. melastigma and both fish shared most of their parasite fauna with other fishes. Differences in the parasite fauna of these fishes are attributed to the morphological, behavioural or ecological features of these fishes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1980.tb02770.x
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  • 3
    Electronic Resource
    Electronic Resource
    Observations on the occurrence of Allocreadium fasciatusi in Aplocheilus melastigma (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 14 (1979), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Allocreadium fasciatusi is a common trematode occurring in the intestine of the fish Aplocheilus melastigma. The distribution of this fluke inside the fish host has been studied for a period of one year. The fluke occurred throughout the year, the incidence ranged from 20 to 88, and the number of parasites per infected host varied from 1 to 58. The fluke exhibited a seasonal cycle of occurrence with a peak both in incidence and intensity in the month of September. For the rest of the year the population remained constant and there was a balance between recruitment and loss from the trematode populations. The maturation cycle of A. fasciatusi also followed a seasonal pattern. Although the flukes were recruited in all the months, the peak invasion occurred in September. The large numbers of immature flukes received during this month became gravid by January. The availability of infective larvae was considered to be important in influencing the seasonal cycles.The incidence and intensity of infection were found to be independent of the size of the fish but female fish were noted to be the more heavily infected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1979.tb03494.x
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  • 4
    Electronic Resource
    Electronic Resource
    Distribution of metacercariae of Centrocestus formosanus (Trematoda: Heterophyidae) on the gills of Aplocheilus panchax (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 29 (1986), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The metacercariae of Centrocestus formosanus (Nishigori 1924) occur on the gills of freshwater fishes in association with blood vessels. The microecology of the metacercariae on the gills of the cyprinid fish Aplocheilus panchax (Ham. & Buch.) was investigated. The cysts showed a preference for anterior gills and for the dorsal section of each gill. Variations in the density of infection, season and size of the fish do not affect the spatial distribution of metacercariae. It is presumed that ventilation water currents spread the cercariae onto the anterior gills and then the cercariae actively select the preferred habitat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1986.tb04984.x
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  • 5
    Electronic Resource
    Electronic Resource
    Egg-shell in paramphistomatidae (Trematoda: Digenea) (1966)
    Springer
    Cellular and molecular life sciences 22 (1966), S. 93-94 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé On a découvert que, dans la famille des Paramphistomatidae (Trematodes), la coquille de l'∄uf, transparente et sans couleur, est une kératine-type de scléroprotéine, constituée de disulphide en chaÎnes (-S-S-). On sait que chez d'autres trématodes, la coquille d'ceuf, d'une couleur ambrée, est une protéine de quinone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01900170
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  • 6
    Electronic Resource
    Electronic Resource
    Observations on the life-cycles of two haploporid trematodes, Carassotrema bengalense Rekharani & Madhavi, 1985 and Saccocoelioides martini Madhavi, 1979 (1991)
    Springer
    Systematic parasitology 20 (1991), S. 97-107 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The life-cycles of two species of haploporid trematodes, Carassotrema bengalense Rekharani & Madhavi, 1985 and Saccocoelioides martini Madhavi, 1979, are illustrated. The molluscan host of the two species is the prosobranch gastropod Stenothyra blanfordiana (Nevill), which occurs in abundance in Chilka Lake, a large brackish-water lagoon. The cercariae are gymnocephalous, bi-ocellate and distomate. The cercaria of C. bengalense is characterised by the presence of thin lateral expansions of the tail, long tubular caeca, dense cystogenous glands and a Y-shaped excretory bladder. The cercaria of S. martini, on the other hand, has a simple tail, a prominent pharynx, short elliptical caeca lined by tall cells and an I-shaped excretory bladder. Both of the cercariae encyst on algae. Adults of C. bengalense occur in Mugil cephalus L. and Valamugil cunnesius (Val.), while those of S. martini occur in M. cephalus, Liza macrolepis (Smith), Etroplus suratensis (Bloch) and Hilsa ilisha (Hamilton).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00007386
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  • 7
    Electronic Resource
    Electronic Resource
    The life-cycle of Helicometra gibsoni n. sp. (Digenea: Opecoelidae) (1993)
    Springer
    Systematic parasitology 25 (1993), S. 63-72 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The life-cycle of Helicometra gibsoni n. sp., an opecoelid trematode of marine fishes, is elucidated and the life-history stages are described. Natural infections with the cercariae, which are typically opecoelid in many respects but characterised by having very long, extensile tails, were found in the intertidal snail Anachis terpsichore collected from the Lawson's Bay Coast, Bay of Bengal. Metacercariae were found in the thoracic muscles of the shooting shrimp Alphaeus malabaricus as prominent, reddish-brown, oval cysts. Laboratory experiments demonstrated that 14 days are required for the development of cercaria into the infective metacercarial stage in shrimps. Natural infections with the adult fluke were found in Scorpaenopsis cirrhosus. Therapon jarbua served as an experimental host. Fourteen-day-old metacercariae fed to T. jarbua developed into egg-producing adults in 40–43 days. Intra-specific variations noted in the flukes obtained from natural and experimental infections are presented. H. fasciata of Madhavi (1975) is regarded as a synonym of H. gibsoni.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00017001
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  • 8
    Electronic Resource
    Electronic Resource
    Some new and known species of the genusDidymocystis Ariola, 1902 (Trematoda: Didymozoidae) from scombrid fishes of the Visakhapatnam coast, Bay of Bengal (1995)
    Springer
    Systematic parasitology 31 (1995), S. 11-24 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Nine species of didymozoid trematodes referable to the genusDidymocystis Ariola, 1902 are reported from scombrid fishes of the Visakhapatnam coast, Bay of Bengal, India. They are:Didymocystis wedli fromThunnus tonggol; D. dissimilis fromKatsuwonus pelamis; D. alalongae fromT. tonggol; D. superpalati fromT. tonggol; D. bifurcata fromT. tonggol; D. oesophagicola fromT. tonggol; D. pinnicola fromK. pelamis; D. exiguus fromAuxis thazard andEuthynnus affinis; and a new species,D. guttatus, fromScomberomorus guttatus. The generaLagenocystis Yamaguti, 1970,Oesophagocystis Yamaguti, 1970 andDidymosulcus Pozdnyakov, 1990 are synonymised withDidymocystis. The synonymies ofUnivitellodidymocystis Yamaguti, 1970 andDidymocystoides Yamaguti, 1970, but notCoeliodidymocystis Yamaguti, 1970, withDidymocystis, as proposed by Pozdnyakov (1990), are accepted.Didymocystis bifasciatus (Yamaguti, 1970) is considered a synonym ofD. alalongae Yamaguti, 1970 andD. philobranchia Yamaguti, 1970 ofD. bifurcata Yamaguti, 1970. Of the nine species reported, eight constitute new reports from the Bay of Bengal. A key to the species ofDidymocystis from scombrid fishes of the Visakhapatnam coast is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00009298
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  • 9
    Electronic Resource
    Electronic Resource
    Euclinostomum heterostomum (Rudolphi, 1809) (Trematoda): life-cycle, growth and development of the metacercaria and adult (1997)
    Springer
    Systematic parasitology 38 (1997), S. 51-64 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The life-history of Euclinostomum heterostomum (Rudolphi, 1809), a clinostomid trematode occurring in the oesophagus and buccal cavity of pond heron Ardeola grayii and cattle egret Bubulcus ibis at Visakhapatnam, India, has been traced from egg to adult stage, based on field and laboratory studies. Eggs released by gravid flukes hatched into miracidia in 10 days. The snail Indoplanorbis exustus served as the first intermediate host and the intramolluscan phase, involving the development of two redial generations and cercariae, took two months. Natural infections with the metacercaria were found in the kidneys and liver of the fish Channa punctatus and muscles of C. orientalis. Laboratory experiments demonstrated that more than 2 months are required for the development of the cercaria into the infective metacercarial stage. The morphology of all of the stages in the life-cycle has been studied in detail, as well as the growth characteristics of the metacercaria within the fish host. Two phases in the metacercarial growth were noted, a lag phase followed by an exponential phase. Allometric growth parameters of body proportions and organs of the metacercaria and the adult are compared. The validity of various species included in the genus Euclinostomum is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005829625739
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  • 10
    Electronic Resource
    Electronic Resource
    The morphology, life-cycle and systematic position of Orthetrotrema monostomum Macy & Basch, 1972, a progenetic trematode (1995)
    Springer
    Systematic parasitology 32 (1995), S. 225-232 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The life-cycle of Orthetrotrema monostomum, a progenetic trematode occurring in the haemocoel of dragonfly naiads is described. The snail Thiara tuberculata acts as the intermediate host. The cercaria is xiphidiocercous, monostomate and belongs to the “Microcotylous” group. The course of development of the cercaria into a mature adult fluke is followed in the haemocoel of dragon-fly naiads which had been exposed to cercariae. On the basis of intraspecific variations noted in the adult flukes obtained experimentally from dragon-fly naiads, O. longicaeca Hanumantha Rao & Swamy, 1975 is synonymised with O. monostomum. Evidence is provided for the inclusion of the genus Orthetrotrema in the family Eumegacetidae. The diagnosis of the family Eumegacetidae is amended.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00008831
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