Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão

CANTANHÊDE, Lorrane Gabrielle; CARVALHO, Irayana Fernanda da Silva; NUNES, Karla Bittencourt; ALMEIDA, Zafira da Silva de; SANTOS, Nayara Barbosa

Artigo

Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão

Reproductive biology affords fundamental features for the establishment of protective measures for fish. The aim of the present work therefore was to determine the reproductive features of the catfish, Hassar affinis, known locally as bico-deflor, in three lakes of the Pindaré-Mearim Lake System, in...

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Autor principal:	CANTANHÊDE, Lorrane Gabrielle
Outros Autores:	CARVALHO, Irayana Fernanda da Silva, NUNES, Karla Bittencourt, ALMEIDA, Zafira da Silva de, SANTOS, Nayara Barbosa
Grau:	Artigo
Idioma:	eng
Publicado em:	Universidade Federal do Pará 2018
Assuntos:	Bagre Hassar affinis Conservação Fecundidade Sistema lacustre - Maranhão CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
Acesso em linha:	http://repositorio.ufpa.br/jspui/handle/2011/9987 http://dx.doi.org/10.5935/1806-6690.20170054

id	ir-2011-9987
recordtype	dspace
spelling	ir-2011-99872018-06-12T05:32:52Z Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão Ecologia reprodutiva do mandi bico-de-flor Hassar affinis (ACTINOPTERYGII: DORADIDAE), em três lagos do sistema lacustre Pindaré-Mearim, Maranhão CANTANHÊDE, Lorrane Gabrielle CARVALHO, Irayana Fernanda da Silva NUNES, Karla Bittencourt ALMEIDA, Zafira da Silva de SANTOS, Nayara Barbosa Bagre Hassar affinis Conservação Fecundidade Sistema lacustre - Maranhão CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA Reproductive biology affords fundamental features for the establishment of protective measures for fish. The aim of the present work therefore was to determine the reproductive features of the catfish, Hassar affinis, known locally as bico-deflor, in three lakes of the Pindaré-Mearim Lake System, in the state of Maranhão, with the aim of subsidising the closed season. Monthly collections were carried out between July 2014 and July 2015, when 206 individuals were sampled from Lake Aquiri (LA), 247 from Lake Cajari (LC), and 126 from Lake Viana (LV). In the laboratory, each individual was weighed and measured; a ventral longitudinal incision was then made in order to observe the gonads macroscopically. They were then fixed in Bouin’s solution for microscopic analysis and in Gilson’s solution for an analysis of fecundity. Positive allometry was recorded at the three study sites. The sex ratio for the total period was 3.29F:1M (LA), 2.43F:1M (LC) and 2.15F:1M (LV). Mean length at first sexual maturity was estimated at 10.60 cm (LA), 10.84 cm (LC) and 11.12 cm (LV). The period from March to May was defined as the breeding season for this species in the three lakes. Mean absolute fecundity was 21,634 oocytes (LA), 16,357 oocytes (LC) and 25,898 oocytes (LV). The information obtained through this study indicates that, in addition to being important spawning areas, the three lakes are interconnected in relation to the migratory dynamics of H. affinis, so it is necessary to arrive at a model that would satisfactorily cover the three lakes, considering that the dam has a negative effect on Lake Viana. A biologia reprodutiva fornece aspectos fundamentais para o estabelecimento de medidas protetivas aos peixes. Desta forma, o presente trabalho teve por objetivo determinar os aspectos reprodutivos do mandi bico-de-flor (Hassar affinis) em três lagos do Sistema Lacustre Pindaré-Mearim, Maranhão, visando subsidiar período de defeso. Foram realizadas coletas mensais entre o período de julho/2014 a julho/2015 onde foram amostrados 206 indivíduos no Lago Aquiri (LA), 247 no Lago Cajari (LC) e 126 no Lago de Viana (LV). Em laboratório, procedeu-se com a pesagem e medidas de cada indivíduo e posteriormente foi feita uma incisão ventro-longitudinal a fim de observar macroscopicamente as gônadas. Em seguida, foram fixadas em solução de Bouin para análise microscópica e em solução de Gilson para análise da fecundidade. A alometria positiva foi registrada nos três locais de estudo. A proporção sexual para o período total foi de 3,29F:1M (LA), 2,43F:1M (LC) e 2,15F:1M (LV). O comprimento médio de primeira maturação sexual foi estimado em 10,60 cm (LA), 10,84 cm (LC) e 11,12 cm (LV). Os meses de março a maio foram definidos como período de reprodução desta espécie para os três lagos. A fecundidade absoluta média foi de 21.634 ovócitos (LA), 16.357 ovócitos (LC) e 25.898 ovócitos (LV). As informações obtidas através deste estudo indicam que, além de serem importantes áreas de desova, os três lagos estão conectados entre si quanto à dinâmica migratória de H. affinis, logo, é necessário pensar em um modelo que atenda de forma satisfatória os três lagos, tendo em vista que a barragem tem efeitos negativos sobre o lago de Viana. 2018-06-11T21:37:54Z 2018-06-11T21:37:54Z 2017-09 Artigo de Periódico CANTANHÊDE, Lorrane Gabrielle et al. Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré-Mearim lake system, Maranhão. Revista Ciência Agronômica, Fortaleza, v. 48, n. 3, p. 464-472, jul./set. 2017. Disponível em: <http://repositorio.ufpa.br/jspui/handle/2011/9987>. Acesso em:. 1806-6690 http://repositorio.ufpa.br/jspui/handle/2011/9987 http://dx.doi.org/10.5935/1806-6690.20170054 eng Revista Ciência Agronômica Acesso Aberto application/pdf Universidade Federal do Pará Brasil UFPA http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300464&lng=pt&nrm=iso
institution	Repositório Institucional - Universidade Federal do Pará
collection	RI-UFPA
language	eng
topic	Bagre Hassar affinis Conservação Fecundidade Sistema lacustre - Maranhão CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
spellingShingle	Bagre Hassar affinis Conservação Fecundidade Sistema lacustre - Maranhão CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA CANTANHÊDE, Lorrane Gabrielle Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão
topic_facet	Bagre Hassar affinis Conservação Fecundidade Sistema lacustre - Maranhão CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
description	Reproductive biology affords fundamental features for the establishment of protective measures for fish. The aim of the present work therefore was to determine the reproductive features of the catfish, Hassar affinis, known locally as bico-deflor, in three lakes of the Pindaré-Mearim Lake System, in the state of Maranhão, with the aim of subsidising the closed season. Monthly collections were carried out between July 2014 and July 2015, when 206 individuals were sampled from Lake Aquiri (LA), 247 from Lake Cajari (LC), and 126 from Lake Viana (LV). In the laboratory, each individual was weighed and measured; a ventral longitudinal incision was then made in order to observe the gonads macroscopically. They were then fixed in Bouin’s solution for microscopic analysis and in Gilson’s solution for an analysis of fecundity. Positive allometry was recorded at the three study sites. The sex ratio for the total period was 3.29F:1M (LA), 2.43F:1M (LC) and 2.15F:1M (LV). Mean length at first sexual maturity was estimated at 10.60 cm (LA), 10.84 cm (LC) and 11.12 cm (LV). The period from March to May was defined as the breeding season for this species in the three lakes. Mean absolute fecundity was 21,634 oocytes (LA), 16,357 oocytes (LC) and 25,898 oocytes (LV). The information obtained through this study indicates that, in addition to being important spawning areas, the three lakes are interconnected in relation to the migratory dynamics of H. affinis, so it is necessary to arrive at a model that would satisfactorily cover the three lakes, considering that the dam has a negative effect on Lake Viana.
format	Artigo
author	CANTANHÊDE, Lorrane Gabrielle
author2	CARVALHO, Irayana Fernanda da Silva NUNES, Karla Bittencourt ALMEIDA, Zafira da Silva de SANTOS, Nayara Barbosa
author2Str	CARVALHO, Irayana Fernanda da Silva NUNES, Karla Bittencourt ALMEIDA, Zafira da Silva de SANTOS, Nayara Barbosa
title	Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão
title_short	Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão
title_full	Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão
title_fullStr	Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão
title_full_unstemmed	Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão
title_sort	reproductive ecology of the catfish, hassar affinis (actinopterygii: doradidae), in three lakes of the pindaré- mearim lake system, maranhão
publisher	Universidade Federal do Pará
publishDate	2018
url	http://repositorio.ufpa.br/jspui/handle/2011/9987 http://dx.doi.org/10.5935/1806-6690.20170054
_version_	1832604421936119808
score	11.755432

Reproductive ecology of the catfish, Hassar affinis (ACTINOPTERYGII: DORADIDAE), in three lakes of the Pindaré- Mearim lake system, Maranhão

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