The population dynamics of the red porgy Pagrus pagrus along southern Brazil, before its fishery collapse in the 1980s: a baseline study

Free Access

Table 3

Mean total length at age (TL), the number of specimens (n) and 95% confidence intervals (Cl) for male, female and hermaphrodites and pooled sexes of Pagrus pargus from southern Brazil sampled between 1976 and 1985. The results of the Kruskal–Wallis test between sexes by age are shown in the right column. The pooled sexes number includes non-sexed specimens.

Age class													Kruskal–Wallis

	Males			Females			Hermaphrodites			Pooled sexes				Male vs. Female		Herm. vs. Male		Herm. vs. Female

	n	TL (mm)	CI	n	TL (mm)	CI	n	TL (mm)	CI	n	TL (mm)	CI	df	χ²	p	χ²	p	χ²	p
1	8	230	17.3	27	220	8.0	18	234	5.8	106	205	6.6	1	0.89	0.76	0.94	0.75	1.21	0.27
2	32	261	6.8	102	266	4.4	60	251	4.3	346	260	3.4	1	0.90	0.34	3.99	<0.05	16.4	<0.05
3	66	293	5.8	164	289	4.2	65	280	4.7	503	290	3.3	1	0.92	0.33	10.4	<0.05	6.69	<0.05
4	84	312	5.2	131	311	4.7	22	306	6.8	519	310	3.2	1	0.28	0.59	1.04	0.30	0.63	0.42
5	136	324	4.3	197	335	4.0	21	326	7.0	746	329	3.0	1	12.8	<0.05	0.24	0.62	1.64	0.19
6	101	349	5.0	157	351	4.0	6	348	9.6	578	346	3.2	1	0.28	0.59
7	80	364	5.5	152	365	4.2	7	365	9.2	541	365	3.2	1	0.01	0.93
8	72	383	6.1	89	378	4.9	2	330	17	336	382	3.6	1	0.54	0.45
9	59	391	6.2	64	392	5.8	1	375		270	394	3.7	1	0.01	0.94
10	34	400	5.9	50	406	5.7	2	415	22	199	406	4.0	1	1.19	0.27
11	22	421	7.7	27	416	5.7				130	419	4.4
12	13	424	7.5	15	411	8.1				73	429	4.9
13	10	437	12.1	9	436	10.4				39	442	7.1
14	3	459	19.8	5	435	16.1				26	438	8.7
15	4	445	14.2	1	445					13	452	12.0
16										3	466	14.8
17				1	425					3	476	30.6
19										1	559
21				1	605					1	605
Total	724			1192			204			4433

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.