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

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

doi:10.1515/helmin-2015-0067

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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

Helminthologia

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

By: J. A. Debortoli, A. C. F. Lacerda, T. R. Lisboa and M. L. Martins

Open Access

|Mar 2016

Figures & Tables

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

Table 1.

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

Aphanoblastella mastigatus
14 fish per tank	Initial	61.1	4.18 ± 5.23^Aa	2.56 ± 4.53^Aa
14 fish per tank	Day 5	72.2	3.62 ± 1.85^Aa	2.61 ± 2.28^Aa
28 fish per tank	Initial	61.1	4.18 ± 5.23^Aa	2.56 ± 4.53^Aa
	Day 5	83.3	3.07 ± 2.25^Aa	2.56 ± 2.36^Ab
	Day 10	100.0	9.50 ± 3.57^Bb	9.50 ± 3.57^Bc
42 fish per tank	Initial	61.1	4.18 ± 5.23^Aa	2.56 ± 4.53^Aa
	Day 5	83.3	3.13 ± 2.17^Aa	2.61 ± 2.30^Aa
	Day 10	100.00	4.72 ± 7.31^Ca	4.72 ± 7.31^Ca

Table 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.

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*
28 fish per tank	Day 5	95.00	0.029*
	Day 10	20.50	0.025*
42 fish per tank	Day 5	73.50	0.004*
42 fish per tank	Day 10	38.00	0.001*

* Significant values (P≤0.05)

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DOI: https://doi.org/10.1515/helmin-2015-0067 | Journal eISSN: 1336-9083 | Journal ISSN: 0440-6605

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Language: English

Page range: 55 - 61

Submitted on: Oct 7, 2013

Accepted on: Oct 21, 2015

Published on: Mar 10, 2016

Published by: Slovak Academy of Sciences, Institute of Parasitology

In partnership with: Paradigm Publishing Services

Publication frequency: Volume open

Keywords:

fish,

Related subjects:

Zoology,

Ecology,

Life sciences, other,

Medicine,

Clinical medicine,

Microbiology, virology and infection epidemiology

© 2016 J. A. Debortoli, A. C. F. Lacerda, T. R. Lisboa, M. L. Martins, published by Slovak Academy of Sciences, Institute of Parasitology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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

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

Figures & Tables

Fig. 1.

Fig. 2.

Table 1.

Table 2.

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