Distribution of metacercariae of Centrocestus formosanus (Trematoda: Heterophyidae) on the gills of Aplocheilus panchax
iii) Aplocheilus panchax (Hamilton-Buchanan), 1822 (Common name: Panchax minnow)
panchax is a potential larvivorous fish in controlling several vector species in different types of natural and man-made habitats (18).
levels of out-groups were included: Prorivulus auriferus Costa, Lima & Suzart, 2004, and Kryptolebias brasiliensis, representing the successive most basal lineages of the Rivulidae (Costa 2004a, 2004c); Scriptaphyosemion guignardi (Romand, 1981) of the Nothobranchidae, the sister group of Rivulidae (Murphy & Collier 1997, Costa 2004a); and, Aplocheilus panchax (Hamilton-Buchanan, 1822) of the Aplocheilidae, the sister group of Nothobranchidae plus Rivulidae (Murphy & Collier 1997, Costa 2004a).
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Empirical evidence is provided from the studies of Macropodus cupanus Valenciennes (12,13), Aplocheilus lineatus Valenciennes (Cyprinidontiformes: Aplocheilidae) (14), Colisa fasciatus Bloch and Schneider (Perciformes: Osphronemidae), Aplocheilus panchax Hamilton-Buchanan (Cyprinidontiformes:Aplocheilidae), Rasbora daniconius Mukerji (Cypriniformes: Cyprinidae), Ambassis nama Hamilton (Perciformes: Ambassidae) and Esomus danricus Hamilton (Cypriniformes: Cyprinidae) (15-17).
The fish species considered are Ambassis (=Chanda) nama, Parambassis (=Chanda) ranga, Colisa fasciatus, Aplocheilus panchax and Esomus danricus.
The five fish species Ambassis (=Chanda) nama, Parambassis (=Chanda) ranga, Colisa fasciatus, Aplocheilus panchax, and Esomus danricus were collected from the rice-fields and irrigation canals in and around The University of Burdwan campus and Agricultural Farm, Golapbag, Burdwan, India (19).
panchax, the fishes consumed mosquito larvae less than the expected values, even when the mosquitoes were present at higher proportion.
In the present study, this hypothesis is being tested to infer about the suitability of the killifish Aplocheilus panchax (Cyprinodontiformes: Aplocheilidae), commonly known as 'panchax minnow', a surface feeder and used as potent biocontrol agent in several aquatic habitats (16,17).
Aplocheilus panchax fishes were collected from East Calcutta Wetlands, Kolkata, adjacent to Ruby Fish Farm, using local made nylon nets attached with a long handle.
Laboratory experiments were carried out to determine the feeding preference of A panchax under different habitat conditions.