Preference for microhabitat by Monogenea on the gills of the south american catfish  at different stocking densities under laboratory conditions

J. A. Debortoli; A. C. F. Lacerda; T. R. Lisboa; M. L. Martins

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Preference for microhabitat by Monogenea on the gills of the south american catfish Rhamdia quelen at different stocking densities under laboratory conditions

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| Mar 10, 2016

Volume 53 (2016): Issue 1 (March 2016)

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Published Online: Mar 10, 2016

Page range: 55 - 61

Received: Oct 07, 2013

Accepted: Oct 21, 2015

DOI: https://doi.org/10.1515/helmin-2015-0067

Keywords
fish, parasitology, monogenean, ectoparasites, ecology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mean abundance of the parasite Aphanoblastella mastigatus on Rhamdia quelen, comparing the gill arches and stocking densities at day 5 (A) and day 10 (B) of the experiment, and comparing the gill sectors and stocking densities at day 5 (C) and day 10 (D) of the experiment

Mean abundance of the parasite Scleroductus sp. on Rhamdia quelen, comparing the gill arches and stocking densities at day 5 (A) and day 10 (B) of the experiment, and comparing the gill sectors and stocking densities at day 5 (C) and day 10 (D) of the experiment

Prevalence (%), mean and standard deviation of intensity and abundance of Scleroductus sp and A. mastigatus in R. quelen at different collection days and stocking density. Mean intensities and mean abundances with the same letters did not differ significantly; mean intensities and mean abundances with different letters differ significantly (p<0.05)

Scleroductus sp.
Density	Collection	Prevalence	Mean intensity	Mean abundance
14 fish per tank	Initial	66.7	4.33 ± 6.34^a	2.89 ± 5.52^a
14 fish per tank	Day 5	33.3	2.17 ± 1.17^a	0.72 ± 1.23^b
28 fish per tank	Initial	66.7	4.33 ± 6.34^a	2.89 ± 5.52^a
	Day 5	44.4	2.63 ± 1.77^a	1.17 ± 1.76^a
	Day 10	60.0	11.33 ± 17.56^a	6.80 ± 14.34^a
42 fish per tank	Initial	66.7	4.33 ± 6.34^a	2.89 ± 5.52^a
	Day 5	38.9	2.14 ± 2.19^a	0.83 ± 1.69^b
	Day 10	33.3	2.17 ± 1.17^a	0.72 ± 1.23^b

Results of Mann-Whitney’s U test between the abundance of Scleroductus sp. and A. mastigatus on the gills of R. quelen, at three stocking densities, at diferent collection day.

Scleroductus sp. x A.	mastigatus	Mann-Whitney
Density	Collection	U	P
	Initial	152.00	0.734
14 fish per tank	Day 5	81.00	0.007 Significant values (P≤0.05)
28 fish per tank	Day 5	95.00	0.029 Significant values (P≤0.05)
	Day 10	20.50	0.025 Significant values (P≤0.05)
42 fish per tank	Day 5	73.50	0.004 Significant values (P≤0.05)
42 fish per tank	Day 10	38.00	0.001 Significant values (P≤0.05)

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Preference for microhabitat by Monogenea on the gills of the south american catfish Rhamdia quelen at different stocking densities under laboratory conditions

Article Category: Research Article

Published Online: Mar 10, 2016

Page range: 55 - 61

Received: Oct 07, 2013

Accepted: Oct 21, 2015

DOI: https://doi.org/10.1515/helmin-2015-0067

Keywords
fish, parasitology, monogenean, ectoparasites, ecology

© 2016 Institute of Parasitology, SAS, Košice

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1.

Fig. 2.

Results of Mann-Whitney’s U test between the abundance of Scleroductus sp. and A. mastigatus on the gills of R. quelen, at three stocking densities, at diferent collection day.

Preference for microhabitat by Monogenea on the gills of the south american catfish Rhamdia quelen at different stocking densities under laboratory conditions

Article Category: Research Article

Published Online: Mar 10, 2016

Page range: 55 - 61

Received: Oct 07, 2013

Accepted: Oct 21, 2015

DOI: https://doi.org/10.1515/helmin-2015-0067

Keywordsfish, parasitology, monogenean, ectoparasites, ecology

© 2016 Institute of Parasitology, SAS, Košice

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1.

Fig. 2.

Results of Mann-Whitney’s U test between the abundance of Scleroductus sp. and A. mastigatus on the gills of R. quelen, at three stocking densities, at diferent collection day.

Keywords
fish, parasitology, monogenean, ectoparasites, ecology