Produção Nacional
Revisado por pares
Reproductive strategy of Psectrogaster rhomboides Eigenmann & Eigenmann, 1889, a freshwater fish from Northeastern Brazil
2013; Wiley; Volume: 29; Issue: 6 Linguagem: Inglês
10.1111/jai.12237
ISSN1439-0426
AutoresAndréa Soares de Araújo, O. Pedro de Souza, Wallace Silva Nascimento, Júlio César Sá‐Oliveira, Maria Emília Yamamoto, Sathyabama Chellappa,
Tópico(s)Fish Ecology and Management Studies
ResumoJournal of Applied IchthyologyVolume 29, Issue 6 p. 1259-1263 Original Article Reproductive strategy of Psectrogaster rhomboides Eigenmann & Eigenmann, 1889, a freshwater fish from Northeastern Brazil A. Soares de Araújo, A. Soares de Araújo Postgraduate Program in Psychobiology, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorO. Pedro de Souza, O. Pedro de Souza Departamento de Oceanografia e Limnologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorW. Silva do Nascimento, W. Silva do Nascimento Postgraduate Program in Psychobiology, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorJ. César Sá de Oliveira, J. César Sá de Oliveira Laboratório de Ictiologia e Limnologia da Universidade Federal do Amapá – UNIFAP, Macapá, Amapá, BrazilSearch for more papers by this authorM. Emília Yamamoto, M. Emília Yamamoto Postgraduate Program in Psychobiology, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorS. Chellappa, Corresponding Author S. Chellappa Departamento de Oceanografia e Limnologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil Author's address: Sathyabama Chellappa, Departamento de Oceanografia e Limnologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Av. Salgado Filho, 3000, Lagoa Nova, Natal, Rio Grande do Norte, CEP 59.072-970, Brazil. E-mail: chellappa.sathyabama63@gmail.comSearch for more papers by this author A. Soares de Araújo, A. Soares de Araújo Postgraduate Program in Psychobiology, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorO. Pedro de Souza, O. Pedro de Souza Departamento de Oceanografia e Limnologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorW. Silva do Nascimento, W. Silva do Nascimento Postgraduate Program in Psychobiology, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorJ. César Sá de Oliveira, J. César Sá de Oliveira Laboratório de Ictiologia e Limnologia da Universidade Federal do Amapá – UNIFAP, Macapá, Amapá, BrazilSearch for more papers by this authorM. Emília Yamamoto, M. Emília Yamamoto Postgraduate Program in Psychobiology, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, BrazilSearch for more papers by this authorS. Chellappa, Corresponding Author S. Chellappa Departamento de Oceanografia e Limnologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil Author's address: Sathyabama Chellappa, Departamento de Oceanografia e Limnologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Av. Salgado Filho, 3000, Lagoa Nova, Natal, Rio Grande do Norte, CEP 59.072-970, Brazil. E-mail: chellappa.sathyabama63@gmail.comSearch for more papers by this author First published: 21 May 2013 https://doi.org/10.1111/jai.12237Citations: 4Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Summary Several environmental parameters related to the spawning season of the freshwater fish, Psectrogaster rhomboides were identified. The hypothesis predicts synchrony of the spawning season with the rainy period, presenting a seasonal reproductive strategy. This study investigated the total body length and body mass, sex ratio, body size at first sexual maturity, gonadosomatic index, condition factor, fecundity and reproductive period of P. rhomboides in the natural environment. Twelve monthly samplings (mean n = 20) were carried out from March 2009 to February 2010. Fish were captured using 4 cm diameter cast nets and environmental parameters such as rainfall, temperature, dissolved oxygen concentration, pH and electrical conductivity of the water were registered. The sampled population of P. rhomboides (n = 444) showed a sex ratio of 1 : 1. Females attained first sexual maturity at 15 cm total length and males at 15.3 cm total length. Spawning occurred from March to May, with high gonadosomatic index values during the rainy season. This species is a total spawner, with a mean fecundity of 6188 (±367) mature oocytes. P. rhomboides presents a seasonal reproductive strategy, providing a population increase and exploitation of the environmental resources during the rainy period. Rainfall (196.5 ± 4.9 mm) and the concentration of dissolved oxygen (7.82 ± 0.7018 mg L−1) were influential factors during the spawning season. Gonadosomatic index and the condition factor were negatively correlated during the gonadal development cycle of this species. The monthly gonadosomatic index values show that spawning begins when the rainy season is at its maximum and ends synchronously (females r = 0.9171; males r = 0.889) with the end of the rainy season. Citing Literature Volume29, Issue6December 2013Pages 1259-1263 RelatedInformation
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