Population structure and fecundity of <i>Macrobrachium jelskii</i> (Miers, 1877) (Decapoda, Palaemonidae) on the Batateiras River, sub-basin of the Salgado River, in southern Ceará, Brazil

Macêdo, Rayury Shimizu de; Martins, Carlos Antonio Muniz; Nascimento, Whandenson Machado; Pinheiro, Allysson Pontes

doi:10.1590/2358-2936e2021033

Rayury Shimizu de Macêdo

Laboratório de Crustáceos do Semiárido (LACRUSE), Universidade Regional do Cariri (URCA). 63100-000 Crato, Ceará, Brazil.

http://orcid.org/0000-0003-3152-1311

Carlos Antonio Muniz Martins

Laboratório de Crustáceos do Semiárido (LACRUSE), Universidade Regional do Cariri (URCA). 63100-000 Crato, Ceará, Brazil.

http://orcid.org/0000-0003-0409-0560

Whandenson Machado Nascimento

Laboratório de Crustáceos do Semiárido (LACRUSE), Universidade Regional do Cariri (URCA). 63100-000 Crato, Ceará, Brazil.

Programa de Pós-Graduação em Diversidade Biológica e Recursos Naturais, Universidade Regional do Cariri (URCA). 63100-000 Crato, Ceará, Brazil.

http://orcid.org/0000-0002-4304-0980

Allysson Pontes Pinheiro

Laboratório de Crustáceos do Semiárido (LACRUSE), Universidade Regional do Cariri (URCA). 63100-000 Crato, Ceará, Brazil.

http://orcid.org/0000-0003-1565-6371

CORRESPONDING AUTHOR
Whandenson Machado Nascimento whandenson@gmail.com

RSM
E-mail: rayurymacedo@gmail.com

CAMM

E-mail: carlosmuniz166@gmail.com

WMN
E-mail: whandenson@gmail.com

APP
E-mail: allysson.pinheiro@urca.br

Figures (4)
Tables (2)

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Figure 1.
(A) Brazil delimitation; (B) Ceará delimitation; (C) sampling location of Macrobrachium jelskii (Miers, 1877Miers, E.J. 1877. On a collection of Crustacea, Decapoda and Isopoda, chiefly from South America, with descriptions of new genera and species. Proceedings of the Zoological Society of London, 1877: 653-679.) in municipality of Juazeiro do Norte; River (D) sampling location of Macrobrachium jelskii (Miers, 1877Miers, E.J. 1877. On a collection of Crustacea, Decapoda and Isopoda, chiefly from South America, with descriptions of new genera and species. Proceedings of the Zoological Society of London, 1877: 653-679.) in the Batateiras River.

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Figure 2.
Macrobrachium jelskii (Miers, 1877Miers, E.J. 1877. On a collection of Crustacea, Decapoda and Isopoda, chiefly from South America, with descriptions of new genera and species. Proceedings of the Zoological Society of London, 1877: 653-679.). Values of temperature, rainfall and absolute frequency of juvenile males (JM), adult males (AM), juvenile females (JF), non-ovigerous females (NOF) and ovigerous females (OF) throughout the study period.

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Figure 3.
Macrobrachium jelskii (Miers, 1877Miers, E.J. 1877. On a collection of Crustacea, Decapoda and Isopoda, chiefly from South America, with descriptions of new genera and species. Proceedings of the Zoological Society of London, 1877: 653-679.). (A) Size at morphological sexual maturity for males; (B) size at morphological sexual maturity for females.

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Figure 4.
Macrobrachium jelskii (Miers, 1877Miers, E.J. 1877. On a collection of Crustacea, Decapoda and Isopoda, chiefly from South America, with descriptions of new genera and species. Proceedings of the Zoological Society of London, 1877: 653-679.). Relationship between the maximum number of eggs from each female (fecundity) and the carapace length (CL).

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Table 1
Macrobrachium jelskii (Miers, 1877Miers, E.J. 1877. On a collection of Crustacea, Decapoda and Isopoda, chiefly from South America, with descriptions of new genera and species. Proceedings of the Zoological Society of London, 1877: 653-679.). Sampling and total number of males (M), females (F) and sex ratio (M:F), with Chi-square values ((²) and probability (P).

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Table 2
Macrobrachium jelskii (Miers, 1877Miers, E.J. 1877. On a collection of Crustacea, Decapoda and Isopoda, chiefly from South America, with descriptions of new genera and species. Proceedings of the Zoological Society of London, 1877: 653-679.). Number of juvenile males (JM), adult males (AM), total males (M), juvenile females (JF), adult females (AF), total females (F) and sex ratio for each group (JM:JF, AM:AF, M:F), along the classes size, with Chi-square values (χ(² ) and probability (P ).

Month	M	F	M:F	χ²	P
Jan/13	57	25	1:0.44	12.48	<0.01
Feb/13	60	35	1:0.58	6.57	<0.01
Mar/13	56	22	1:0.39	14.82	<0.01
Apr/13	34	23	1:0.68	2.12	0.145
May/13	38	26	1:0.68	2.25	0.133
Jun/13	16	11	1:0.69	0.92	0.335
Jul/13	20	29	1:1.45	1.63	0.198
Aug/13	15	37	1:2.47	9.30	<0.01
Sep/13	17	23	1:1.35	0.9	0.342
Oct/13	25	36	1:1.44	1.98	0.159
Nov/13	5	10	1:2	1.66	0.196
Dec/13	4	4	1:1	0	1
Total	347	281	1:0.81	6.93	<0.01

	Juveniles					Adults					Total
Classes	JM	JF	JM:JF	χ²	P	AM	AF	AM:AF	χ²	P	M	F	M:F	χ²	P
3.1-\|3.9	2	2	1:1	0	1	0	0	-	-	-	2	2	1:1	0	1
3.9-\|4.7	18	14	1:0.78	0.5	0.47	0	0	-	-	-	18	14	1:0.78	0.5	0.47
4.7-\|5.5	24	27	1:1.13	0.17	0.67	40	0	40:0	40	<0.05	64	27	1:0.42	15.04	<0.05
5.5-\|6.3	0	68	0:68	68	<0.05	147	0	147:0	147	<0.05	147	68	1:0.46	29.02	<0.05
6.3-\|7.1	0	47	0:47	47	<0.05	93	0	93:0	93	<0.05	93	47	1:0.51	15.11	<0.05
7.1-\|7.9	0	0	-	-	-	20	31	1:1.55	2.37	0.12	20	31	1:1.55	2.37	0.12
7.9-\|8.7	0	0	-	-	-	3	44	1:14.67	35.76	<0.05	3	44	1:14.67	35.76	<0.05
8.7-\|9.5	0	0	-	-	-	0	24	0:24	24	<0.05	0	24	0:24	24	<0.05
9.5-\|10.3	0	0	-	-	-	0	18	0:18	18	<0.05	0	18	0:18	18	<0.05
10.3-\|11.1	0	0	-	-	-	0	3	0:3	3	0.08	0	3	0:3	3	0.08
11.1-\|11.9	0	0	-	-	-	0	3	0:3	3	0.08	0	3	0:3	3	0.08

[1] CORRESPONDING AUTHOR
Whandenson Machado Nascimento whandenson@gmail.com

Brasil

Brasil

Population structure and fecundity of Macrobrachium jelskii (Miers, 1877) (Decapoda, Palaemonidae) on the Batateiras River, sub-basin of the Salgado River, in southern Ceará, Brazil

Abstract