Correlation profile of the heavy metal distribution in the <i>Pontastacus leptodactylus</i> tissues

FIKIRDEŞICI-ERGEN, ŞEYDA

doi:10.1590/0001-3765202020190585

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BIOLOGICAL SCIENCES • An. Acad. Bras. Ciênc. 92 (2) • 2020 • https://doi.org/10.1590/0001-3765202020190585 copy

Correlation profile of the heavy metal distribution in the Pontastacus leptodactylus tissues

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Arsenic (As), copper (Cu), nickel (Ni), zinc (Zn), manganese (Mn), lead (Pb), iron (Fe), aluminum (Al), cadmium (Cd) and chromium (Cr) accumulations were evaluated in the gills, hepatopancreas, exoskeleton, and muscles of Pontastacus leptodactylus (crayfish) (Eschscholtz, 1823). The highest metal accumulation was observed in the gills and hepatopancreas. It was detected a negative correlation between Cr-Pb, As-Cr in the muscle tissue. All other metals were displayed positive correlations with each other in the gills, hepatopancreas, and exoskeleton. Strong positive correlations were determined between Ni-Cd and As-Pb in the gills, Ni-Cd, As-Pb and Al-Zn in the hepatopancreas, Zn-Mn and Fe-Cu in the exoskeleton, Ni-Cd, As-Pb, Zn-Mn, Al-Mn, Fe-Cu and Al-Zn in the muscle (r= 1.000). PCA and cluster analysis generally were supported the correlations observed. The correlations between divalent metals may be expressed by the role of divalent metal transporter 1 (DMT1) in the gathering of these metals.

Key words
Pontastacus leptodactylus; heavy metals; metal-metal(loid) interactions; correlation

	As	Cu	Ni	Zn	Mn	Pb	Fe	Al	Cd	Cr
Exo	8.8±0.7	18.6±3.1	2.7±0.8	67.7±14.4	54.9±12.8	2.9±0.4	43.6±3.1	188.4±14.8	1.4±0.7	7.6±1.7
Gills	15.1±3.2	31.0±5.1	5.1±1.2	113.6±15.9	66.5±9.8	6.1±1.6	64.1±10.3	2334.6±600.2	3.1±1.2	15.6±3.2
Hepato	12.8±3.2	39.1±10.3	5.7±1.4	78.5±9.8	101.6±15.9	4.9±1.6	56.0±5.1	199.5±9.8	2.8±0.7	20.8±2.8
Muscle	6.6±0.9	12.0±4.2	1.0±0.4	35.2±5.6	23.2±5.6	1.8±0.5	37.0±4.2	156.2±5.6	0.7±0.4	4.6±1.5

	Cd	Pb	Mn	Cr	As	Cu	Ni	Zn	Fe	Al
Exoskeleton
Cd	1
Pb	0.337	1
Mn	0.207	0.615	1
Cr	-0.498	0.000	0.128	1
As	0.485	0.876**	0.431	-0.148	1
Cu	0.576	0.227	-0.255	0.140	0.276	1
Ni	0.018	0.759*	0.572	-0.107	0.765**	-0.299	1
Zn	0.207	0.615	1.000**	0.128	0.431	-0.255	0.572	1
Fe	0.576	0.227	-0.255	0.140	0.276	1.000**	-0.299	-0.255	1
Al	0.212	0.632*	0.997**	0.109	0.448	-0.261	0.585	0.997**	-0.261	1
Gills
Cd	1
Pb	0.127	1
Mn	-0.309	-0.139	1
Cr	-0.382	-0.176	0.430	1
As	0.127	1.000**	-0.139	-0.176	1
Cu	-0.297	0.297	0.406	0.479	0.297	1
Ni	1.000**	0.127	-0.309	-0.382	0.127	-0.297	1
Zn	-0.236	-0.285	0.430	-0.212	-0.285	-0.224	-0.236	1
Fe	-0.321	0.467	0.345	0.285	0.467	0.879**	-0.321	-0.297	1
Al	-0.418	0.079	-0.055	-0.212	0.079	0.042	-0.418	0.297	0.297	1
Hepatopancreas
Cd	1
Pb	-0.104	1
Mn	0.018	0.569	1
Cr	-0.321	0.483	0.236	1
As	-0.104	1.000**	0.569	0.483	1
Cu	-0.115	0.043	-0.297	0.285	0.043	1
Ni	1.000**	-0.104	0.018	-0.321	-0.104	-0.115	1
Zn	0.345	0.440	0.430	0.212	0.440	0.345	0.345	1
Fe	-0.212	00.000	-0.224	0.042	0.000	0.879**	-0.212	0.406	1
Al	0.345	0.440	0.430	0.212	0.440	0.345	0.345	1.000**	0.406	1
Muscle
Cd	1
Pb	-0.034	1
Mn	0.140	0.372	1
Cr	0.266	-0.661*	0.000	1
As	-0.034	1.000**	0.372	-0.661*	1
Cu	-0.524	-0.012	-0.442	-0.036	-0.012	1
Ni	1.000**	-0.034	0.140	0.266	-0.034	-0.524	1
Zn	0.140	0.372	1.000**	0.000	0.372	-0.442	0.140	1
Fe	-0.524	-0.012	-0.442	-0.036	-0.012	1.000**	-0.524	-0.442	1
Al	0.140	0.372	1.000**	0.000	0.372	-0.442	0.140	1.000**	-0.442	1

	Exoskeleton			Gills			Hepatopancreas			Muscle
	PC1	PC2	PC3	PC1	PC2	PC3	PC1	PC2	PC3	PC1	PC2	PC3
As	0.413	0.472	0.727	0.916	0.037	-0.071	0.938	-0.14	-0.052	0.313	0.812	-0.405
Cu	-0.114	0.983	0.003	0.383	-0.196	0.788	0.003	-0.032	0.959	-0.744	0.43	0.253
Ni	0.476	-0.041	0.754	0.093	0.875	-0.283	-0.123	0.957	-0.12	0.57	-0.648	-0.298
Zn	0.975	-0.08	0.077	-0.62	-0.367	-0.166	0.613	0.707	0.225	0.855	0.376	0.348
Mn	0.97	-0.071	0.076	-0.511	-0.076	0.581	0.746	0.174	-0.329	0.855	0.376	0.348
Pb	0.646	0.327	0.599	0.916	0.037	-0.071	0.938	-0.14	-0.052	0.313	0.812	-0.405
Fe	-0.114	0.983	0.003	0.601	-0.275	0.591	-0.047	-0.035	0.908	-0.744	0.43	0.253
Al	0.971	-0.072	0.103	-0.007	-0.775	-0.082	0.613	0.707	0.225	0.855	0.376	0.348
Cd	0.059	0.815	0.161	0.093	0.875	-0.283	-0.123	0.957	-0.12	0.57	-0.648	-0.298
Cr	0.394	0.043	-0.681	-0.176	-0.066	0.826	0.595	0.124	0.309	0.147	-0.639	0.53
Cumulative % variation	43.429	74.219	87.468	31.538	60.304	74.713	38.266	63.825	84.565	41.633	75.267	88.055
Eigenvalues	4.343	3.079	1.325	3.154	2.877	1.441	3.827	2.556	2.074	4.163	3.363	1.279

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[1] Correspondence to: Şeyda Fikirdeşici-Ergen E-mail: seydafikirdesici@gmail.com