Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric characters
This study was done to describe the morphology and morphometric characters of the life cycle stages of the digenean gill parasite, <em>Centrocestus</em> sp. that infests Koi carp (<em>Cyprinus carpio</em>) at Rambadagalle and Ginigathhena ornamental fish breeding centres of S...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Faculty of Science, University of Peradeniya, Sri Lanka
2020-06-01
|
Series: | Ceylon Journal of Science |
Subjects: | |
Online Access: | https://cjs.sljol.info/articles/7739 |
id |
doaj-027f01d58da644c8ba969a85ed41bad7 |
---|---|
record_format |
Article |
spelling |
doaj-027f01d58da644c8ba969a85ed41bad72021-09-20T15:23:30ZengFaculty of Science, University of Peradeniya, Sri LankaCeylon Journal of Science2513-28142513-230X2020-06-0149218519410.4038/cjs.v49i2.77395806Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric charactersB.G.D. Sumuduni0D.H.N. Munasinghe1A. Arulkanthan2University of RuhunaUniversity of RuhunaUniversity of PeradeniyaThis study was done to describe the morphology and morphometric characters of the life cycle stages of the digenean gill parasite, <em>Centrocestus</em> sp. that infests Koi carp (<em>Cyprinus carpio</em>) at Rambadagalle and Ginigathhena ornamental fish breeding centres of Sri Lanka and to identify the species of the parasite. The snail, <em>Melanoides tuberculata</em> (Müller, 1774) that inhabited the earthen ponds with Koi carps were induced to shed cercariae and 45 days old Koi carps were experimentally infested by them. The infected fish with mature metacercariae were fed to chicks (<em>Gallus gallus</em>) and eggs of the parasite released with faeces and adult stages of the parasite developed in the intestine were recovered. After keeping the eggs in water for several days ciliated miracidia were observed by application of tactile pressure. Infested snails were dissected and the morphometric characters of sporocyst and redia stages were recorded.<br />The eggs were operculated, oval shaped, yellowish brown in colour with lattice design on the shell surface. The ciliated miracidi, was the infective stage to snails. The sporocyst was sac like and the redia was tubular and curved. The cercaria had an oral and a ventral sucker, two eye spots and a tail. The encysted metacercaria was oval in shape with ‘X-shaped excretory bladder’. Excysted metacercaria was elongated and narrower at the anterior end being similar to adults. The adult worm was small and oral sucker was surrounded by 32 circumoral spines arranged in two alternated rows. Acetabulum located in the middle of the body. The excretory bladder opened to a terminal excretory pore. The morphology and morphometric characters of the life cycle stages of the <em>Centrocestus</em> sp. that infests Koi carp at Rambadagalle and Ginigathhena ornamental fish breeding centres were compared with published literature and the parasite was identified as <em>Centrocestus formosanus</em> (Nishigori, 1924), which has not been documented in Sri Lanka earlier.https://cjs.sljol.info/articles/7739centrocestus formosanuskoi carpmelanoides tuberculatalife cyclemorphology |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
B.G.D. Sumuduni D.H.N. Munasinghe A. Arulkanthan |
spellingShingle |
B.G.D. Sumuduni D.H.N. Munasinghe A. Arulkanthan Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric characters Ceylon Journal of Science centrocestus formosanus koi carp melanoides tuberculata life cycle morphology |
author_facet |
B.G.D. Sumuduni D.H.N. Munasinghe A. Arulkanthan |
author_sort |
B.G.D. Sumuduni |
title |
Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric characters |
title_short |
Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric characters |
title_full |
Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric characters |
title_fullStr |
Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric characters |
title_full_unstemmed |
Investigation of complete life cycle and species identification of a digenean gill parasite <i>Centrocestus</i> sp. infesting Koi carp (<i>Cyprinus carpio</i> Linnaeus, 1758) using morphology and morphometric characters |
title_sort |
investigation of complete life cycle and species identification of a digenean gill parasite <i>centrocestus</i> sp. infesting koi carp (<i>cyprinus carpio</i> linnaeus, 1758) using morphology and morphometric characters |
publisher |
Faculty of Science, University of Peradeniya, Sri Lanka |
series |
Ceylon Journal of Science |
issn |
2513-2814 2513-230X |
publishDate |
2020-06-01 |
description |
This study was done to describe the morphology and morphometric characters of the life cycle stages of the digenean gill parasite, <em>Centrocestus</em> sp. that infests Koi carp (<em>Cyprinus carpio</em>) at Rambadagalle and Ginigathhena ornamental fish breeding centres of Sri Lanka and to identify the species of the parasite. The snail, <em>Melanoides tuberculata</em> (Müller, 1774) that inhabited the earthen ponds with Koi carps were induced to shed cercariae and 45 days old Koi carps were experimentally infested by them. The infected fish with mature metacercariae were fed to chicks (<em>Gallus gallus</em>) and eggs of the parasite released with faeces and adult stages of the parasite developed in the intestine were recovered. After keeping the eggs in water for several days ciliated miracidia were observed by application of tactile pressure. Infested snails were dissected and the morphometric characters of sporocyst and redia stages were recorded.<br />The eggs were operculated, oval shaped, yellowish brown in colour with lattice design on the shell surface. The ciliated miracidi, was the infective stage to snails. The sporocyst was sac like and the redia was tubular and curved. The cercaria had an oral and a ventral sucker, two eye spots and a tail. The encysted metacercaria was oval in shape with ‘X-shaped excretory bladder’. Excysted metacercaria was elongated and narrower at the anterior end being similar to adults. The adult worm was small and oral sucker was surrounded by 32 circumoral spines arranged in two alternated rows. Acetabulum located in the middle of the body. The excretory bladder opened to a terminal excretory pore. The morphology and morphometric characters of the life cycle stages of the <em>Centrocestus</em> sp. that infests Koi carp at Rambadagalle and Ginigathhena ornamental fish breeding centres were compared with published literature and the parasite was identified as <em>Centrocestus formosanus</em> (Nishigori, 1924), which has not been documented in Sri Lanka earlier. |
topic |
centrocestus formosanus koi carp melanoides tuberculata life cycle morphology |
url |
https://cjs.sljol.info/articles/7739 |
work_keys_str_mv |
AT bgdsumuduni investigationofcompletelifecycleandspeciesidentificationofadigeneangillparasiteicentrocestusispinfestingkoicarpicyprinuscarpioilinnaeus1758usingmorphologyandmorphometriccharacters AT dhnmunasinghe investigationofcompletelifecycleandspeciesidentificationofadigeneangillparasiteicentrocestusispinfestingkoicarpicyprinuscarpioilinnaeus1758usingmorphologyandmorphometriccharacters AT aarulkanthan investigationofcompletelifecycleandspeciesidentificationofadigeneangillparasiteicentrocestusispinfestingkoicarpicyprinuscarpioilinnaeus1758usingmorphologyandmorphometriccharacters |
_version_ |
1717374036978171904 |