Growth parameters of Poecilia latipinna (Lesueur, 1821) (Actinopterygii, Poeciilidae) – an introduced species in brackish water of Wadi Al-Bahayes (Oman)

Güçlü, Salim Serkan; Al Jufaili, Saud M.; Jawad, Laith A.

doi:10.2478/oandhs-2021-0023

Figures & Tables

Sampling area – Wadi Al-Bahayes in Oman (photo by Dr. Saud Al Jufaili)

Poecilia latipinna, Wadi Al Bahayes (Oman), 49.6 mm SL ♂, 50.6 mm SL ♀ (photo by Dr. Salim Serkan Güçlü)

Total length and weight in frequency distributions for P. latipinna in Oman (F = females, M = males, F + M = all specimens)

L∞ value according to the von Bertalanffy growth equation (a – males, b – females)

Total length–weight relationships (females, males and all specimens) of P. latipinna from Oman

Measured and calculated average total length values for each age in the von Bertalanffy growth equation

Age (Year)	Observed average length (cm)	Expected average length (cm)	t test
1	4.34 ♂4.44 ♀	4.30 ♂4.37 ♀	p > 0.05
2	5.20 ♂5.13 ♀	5.15 ♂5.07 ♀	p > 0.05
3	5.93 ♂5.81 ♀	5.91 ♂5.73 ♀	p > 0.05
4	6.61 ♂6.41 ♀	6.57 ♂6.34 ♀	p > 0.05

Comparison of the growth parameters of Poecilia species reported in different studies

Species	Status	Locality	Ref.	N	TL (range)	W (range)	M:F	L∞	k	t₀	Ø '	a	b	R²
P. butleri	native	South Pacific, Mexico	1	1868	1.5–6.1	-	-	-	-	-	-	0.023	3.27	0.968
P. butleri	native	Gulf of California, Mexico	2	44	1.75–5.54	0.18–5.54	-	-	-	-	-	0.0026	3.13	0.99
P. gillii	native	Chocó region, Ecuador	3	601	1.36–5.21	0.06–4.52	-	-	-	-	-	0.0233	3.16	0.969
P. mexicana	native	Jalpan River, Mexico	4	762	0.8–5.0	1.7–3.6	1.00:1.00	-	-	-	-	0.22	7.41	0.84
P. mexicana	native	Grijalva River Basin, Mexico	5	158	3.3–7.1	-	-	-	-	-	-	0.0038	2.782	0.941
P. reticulata	native	Santa Marta, Colombia	6	231	-	-	0.69:1.00	39.8	0.21	−0.91	2.52	0.008	3.045	-
P. reticulata	native	Bodoquena Plateau, Brazil	7	49	1.50–3.29	0.083–1.03						0.0219	3.09	0.965
P. reticulata	native	Mundaú River Basin, Brazil	8	204	1.0–2.6	0.01–0.17	-	-	-	-	-	0.009	2.982	0.807
P. reticulata	native	Humid forest enclaves, Brazil	9	840	0.63–4.13	0.004–1.85	-	-	-	-	-	0.0216	3.107	0.966
P. sphenops	native	South Pacific, Mexico	1	1604	1.8–7.1	-	-	-	-	-	-	0.034	3.00	0.978
P. sphenops	native	Grijalva River Basin, Mexico	5	58	3.0–7.5	-	-	-	-	-	-	0.0028	2.970	0.979
P. velifera	native	Yucatan, Mexico	10	89	1.4–5.2	0.10–6.40	-	-	-	-	-	0.022	3.302	0.972
P. velifera	alien	Songkhla, Thailand	11	6.033	0.7–6.9	-	1.00:1.80	73.58	0.82	0.99	-	0.000013 ♂0.000014 ♀	3.237 ♂3.194 ♀	0.986 ♂0.987 ♀
P. vivipara	native	Coastal Lagoons, Brazil	12	318	1.0–6.0	0.01–3.27	-	-	-	-	-	0.008	3.368	0.96
P. vivipara	native	Guaratiba Mangrove, Brazil	13	555	1.8–7.8	0.07–6.48	-	-	-	-	-	0.0078	3.28	0.97
P. vivipara	native	Atlantic coastal drainage, Brazil	14	24	2.06–4.07	0.11–0.95	-	-	-	-	-	0.00795	3.49	0.961
P. latipinna	native	Everglades, USA	15	1671	0.6–5.4	-	0.31:1.00	-	-	-	-	0.0267	2.880	0.930
P. latipinna	native	Gulf of Mexico, USA	16	14	2.6–.5.0	-	-	-	-	-	-	0.6674	2.90	0.94
P. latipinna	alien	Indonesia	17	1062	2.6–7.6	-	0.53:1.00	-	-	-	-	0.00003	3.02	0.85
P. latipinna	alien	Wadi Al-Bahayes, Oman	This study	124	3.7–7.5	0.77–4.81	0.59:1.00	11.46 ♂14.51 ♀	−0.127 ♂−0.072 ♀	−2.71♂−3.98♀	1.22 ♂1.18 ♀	0.0272 ♂0.0151 ♀0.0214 ♂+♀	2.5907 ♂3.0398 ♀2.7889 ♂ + ♀	0.9579 ♂0.9368 ♀0.9212 ♂ + ♀

Size and age composition for females (F) and males (M) of P_ latipinna

Age class	I		II		III		IV		Total
Total length (cm)	♀	♂	♀	♂	♀	♂	♀	♂	Total
3.70–4.20	9	8							17
4.21–4.70	26	11							37
4.71–5.20	2	5	21	5					33
5.21–5.70			7	7	1				15
5.71–6.20					10	4	1	1	16
6.21–6.70							1	3	4
6.71–7.20								1	1
7.21–7.70								1	1
∑	37	24	28	12	11	4	2	6	124
TL ± sd (min.–max)
♀	4.44 ± 0,04 (3.70–4.78)		5.13 ± 0.03 (4.83–5.56)		5.81 ± 0.02 (5.61–5.99)		6.41 ± 0.17 (6.16–6.66)		4.93 ± 0.06 (3.70–6.66)
♂	4.34 ± 0.07 (3.70–4.79)		5.20 ± 0.04 (4.99–5.45)		5.93 ± 0.02 (5.85–5.99)		6.61 ± 0.19 (6.15–7.50)		5.00 ± 0.12 (3.70–7.50)

Age and sex distribution for females (F), males (M) and all P_ latipinna specimens from Oman (N – Number of samples, N% – Percent of samples)

Age	Females		Males		All		M:F
Age	N	%N	N	%N	N	%N	M:F
1	37	29.84	24	19.35	61	49.19	0.65:1.00 (p < 0.05)
2	28	22.58	12	9.68	40	32.26	0.43:1.00 (p < 0.05)
3	11	8.87	4	3.23	15	12.10	0.36:1.00 (p < 0.05)
4	2	1.61	6	4.84	8	6.45	3.00:1.00 (p < 0.05)
∑	78	62.90	46	37.10	124	100	0.59:1.00 (p < 0.05)

Growth parameters of Poecilia latipinna (Lesueur, 1821) (Actinopterygii, Poeciilidae) – an introduced species in brackish water of Wadi Al-Bahayes (Oman)

Figures & Tables

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Measured and calculated average total length values for each age in the von Bertalanffy growth equation

Comparison of the growth parameters of Poecilia species reported in different studies

Size and age composition for females (F) and males (M) of P_ latipinna

Age and sex distribution for females (F), males (M) and all P_ latipinna specimens from Oman (N – Number of samples, N% – Percent of samples)

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