Four new species of virgulate xiphidiocercariae infecting the freshwater snail, Bithynia (Digoniostoma) pulchella (Benson, 1836) in Malabar, Kerala

Sanil, N K and Janardanan, K P (2019) Four new species of virgulate xiphidiocercariae infecting the freshwater snail, Bithynia (Digoniostoma) pulchella (Benson, 1836) in Malabar, Kerala. Journal of Parasitic Diseases, 43 (3). pp. 368-378.

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Journal of Parasitic Diseases_N K Sanil_2019_ Four new species of virgulate xiphidiocercariae infecting the freshwater snail, Bithynia (Digoniostoma) pulchella (Benson, 1836) in Malabar, Kerala.pdf
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Official URL: https://link.springer.com/article/10.1007/s12639-0...
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    Abstract

    The present paper describes four new species of virgulate xiphidiocercariae infecting the freshwater gastropod, Bithynia (Digoniostoma) pulchella (Benson, 1836) collected from Malabar, Kerala. Cercaria sp. XXII Malabar n. sp. has a spinose body and tail; four pairs of penetration glands; short, narrow oesophagus; a pair of short, unequal caeca; bicornuate excretory vesicle and 18 pairs of flame cells. Cercaria sp. XXIII Malabar n. sp. is characterized by an oval, spinose body; aspinose tail; dagger-shaped stylet; medially fused virgula; globular pharynx; short oesophagus; three pairs of penetration glands; bicornuate, ‘V’-shaped excretory bladder, and 18 pairs of flame cells. Cercaria sp. XXIV Malabar n. sp. has a spinose body and tail, medially fused virgula, muscular pharynx, short prepharynx and oesophagus; four pairs of penetration glands; bicornuate, ‘V’-shaped excretory bladder, and 12 pairs of flame cells. Cercaria sp. XXV Malabar n. sp. has a spinose body, aspinose tail, sac-like virgula; globular pharynx, narrow oesophagus; short caeca; four pairs of penetration glands; transversely elongated, bicornuate excretory bladder, and 12 pairs of flame cells. All four cercariae developed in sporocysts within the digestive gland of B. (D.) pulchella. Morphology and morphometry of the cercariae are compared with related species to establish their systematic position.

    Item Type: Article
    Uncontrolled Keywords: Virgulate; Xiphidiocercaria; Sporocyst; Bithynia (Digoniostoma) pulchella; Malabar; Kerala
    Subjects: Invertebrata
    Fish Biotechnology > Microbiology
    Fish Diseases
    Divisions: CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI > CMFRI-Kochi > Marine Biotechnology
    CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI-Kochi > Marine Biotechnology
    Depositing User: Arun Surendran
    Date Deposited: 18 Nov 2019 09:45
    Last Modified: 18 Nov 2019 09:45
    URI: http://eprints.cmfri.org.in/id/eprint/13946

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