Early ontogeny of Pimelodus blochii Valenciennes, 1840 (Siluriformes: Pimelodidae): Neotropical catfish Author Silva, Fabíola Katrine Souza Da Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. Author Cajado, Ruineris Almada 0000-0002-7047-0302 Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. & ruineris. cajado @ gmail. com; https: // orcid. org / 0000 - 0002 - 7047 - 0302 ruineris.cajado@gmail.com Author Oliveira, Lucas Silva De 0000-0002-1631-0498 Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. & lucasmdcpa @ gmail. com; https: // orcid. org / 0000 - 0002 - 1631 - 0498 lucasmdcpa@gmail.com Author Ribeiro, Frank Raynner Vasconcelos Coleção Ictiológica da Universidade Federal do Oeste do Pará. Author Zacardi, Diego Maia 0000-0002-2652-9477 Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. & dmzacardi @ hotmail. com; https: // orcid. org / 0000 - 0002 - 2652 - 9477 dmzacardi@hotmail.com text Zootaxa 2021 2021-03-18 4948 1 83 98 journal article 10.11646/zootaxa.4948.1.4 1175-5326 4616153 9F6B62B8-0873-410F-A8A7-F2C4176CB3D1

TABLE 2. Statistical values of linear (L), quadratic (Q) and piecewise linear (S) regressions for morphometric variables obtained in relation to head length and standard length in Pimelodus blochii larvae. a and b, regression parameters (a, angular coefficient and b, linear coefficient); Simple linear L—regression; BM—best model; N—number of individuals; BP—breakpoint; Q—quadratic regression; R 2 = Coefficient of determination; S—piecewise regression; HH/HL—Relationship between head height with head length; BH/SL—Relationship body height with standard length; HL/SL—Relationship head length with standard length; SNL/HL—Relationship snout length with head length; ED/ HL—Relationship eye diameter with head length; SNA/SL—Relationship snout-anal fin distance with standard length; SND/SL—Relationship snout-dorsal fin distance with standard length; SNP/SL—Relationship snout-pectoral fin distance with standard length; SNV/SL—Relationship snout-pelvic fin distance with standard length. Values in bold presented p <0.05.

Body growth
Variables	R2 L	R2 Q	R2 S	F Q/L	p	F S/Q	p	F S/L	p	BM	BP	a1	b1	a2	b2	N
SNL/HL	0.88	0.89	0.90	2.85	0.09	11.80	0.00	7.46	0.01	S	0.73	0.15	0.22	0.13	0.35	119
ED/HL	0.88	0.88	0.95	1.03	0.31	146.70	0.00	74.52	0.00	S	0.60	0.17	-0.04	0.17	0.17	119
HH/HL	0.82	0.83	0.84	2.30	0.13	12.47	0.00	7.50	0.00	S	2.03	0.46	0.46	0.37	1.03	119
HL/SL	0.89	0.90	0.92	2.65	0.10	31.30	0.00	17.32	0.00	S	3.13	0.32	-0.42	0.29	0.52	119
BH/SL	0.89	0.89	0.90	3.25	0.07	8.23	0.00	5.84	0.01	S	2.47	0.25	-0.16	0.21	0.55	119
SNA/SL	0.81	0.81	0.84	0.99	0.32	18.87	0.00	10.02	0.00	S	3.66	0.38	-0.62	0.30	0.67	104
SND/SL	0.90	0.90	0.92	1.72	0.19	21.12	0.00	11.59	0.00	S	5.84	0.51	0.08	0.44	1.37	104
SNP/SL	0.85	0.85	0.89	4.41	0.03	33.06	0.00	19.44	0.00	S	2.54	0.28	-0.50	0.25	0.38	104
SNV/SL	0.65	0.66	0.72	0.82	0.36	14.93	0.00	7.96	0.00	S	5.57	0.23	2.49	0.24	3.07	72