First information on age and growth of Padogobius bonelli (Bonaparte, 1846) outside of its native range: River Aggia (Central Italy) | Knowledge and Management of Aquatic Ecosystems

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Table 4

Lee’s phenomenon in males and females of P. bonelli from the River Aggia: comparison of back-calculated total lengths between specimens at age t and (t + i) for each age class. Results of Mann–Whitney U test are given; values of p< 0.05 considered significant.

			Age t		Age (t + i)	Mann-Whitney
						U test

	Age class	N	Mean TL ± SE	N	Mean TL ± SE	Z	p
	1+	27	3.22 ± 0.07	59	3.11 ± 0.04	1.279	0.201
Males	2+	23	4.91 ± 0.10	36	4.85 ± 0.06	0.575	0.565
	3+	27	6.05 ± 0.07	9	6.07 ± 0.05	1.078	0.281

Females	1+	46	3.11 ± 0.05	39	3.25 ± 0.05	2.161	0.031
	2+	36	4.97 ± 0.06	3	5.40 ± 0.07	2.108	0.035

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