Aspectos reprodutivos do camarão de água doce Macrobrachium potiuna (Müller) (Crustacea, Decapoda, Palaemonidae) na Serra do Piloto, Mangaratiba, Rio de Janeiro, Brasil

Antunes, Luciana dos Santos; Oshiro, Lídia Miyako Yoshii

doi:10.1590/s0101-81752004000200015

Cited by 21 publications

(21 citation statements)

References 13 publications

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“…This pattern corroborates most studies dedicated to the determination of reproductive periods of freshwater decapods of tropical areas, in which the periodicity of environmental factors that influences the reproduction of these organisms are less evident when compared to temperate regions. Studies performed in Brazil with Macrobrachium potiuna (Müller, 1880) in Rio de Janeiro State (Antunes & Oshiro, 2004) and Potimirim glabra (Kingsley, 1878) in São Paulo State (Hoffmann, 2007), did not show any association between frequency of ovigerous females and water temperature.…”

Section: Discussionmentioning

confidence: 92%

“…Antunes & Oshiro (2004) suggested that the apparent egg loss by females might result in a better accommodation of these in the female's body where they are incubated, promoting better water circulation between the eggs mass and consequently, an increase in oxygenation around the embryos. Moreover, these losses may be caused, partly, by parasites and bacterial or fungal infections (Kuris, 1991).…”

Section: Discussionmentioning

confidence: 99%

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Reproductive biology of Macrobrachium amazonicum (Heller, 1862) (Decapoda: Palaemonidae) in a reservoir situated in Minas Gerais State, southeastern Brazil

Silva

Jacobucci

Mossolin

2017

lajar

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ABSTRACT. The palaemonid shrimp Macrobrachium amazonicum is widely distributed in coastal rivers, estuaries and inland waters of South America. Despite this, little is known regarding its biology in the natural environment. Furthermore, this species is economically important because it is the main freshwater shrimp commercially exploited by artisanal fisheries in northern and northeastern Brazil, besides showing great potential for aquaculture. Considering this, the present study aimed to analyze aspects of the reproductive biology of M. amazonicum. A total of 251 females were analyzed, 102 of these being ovigerous. The carapace length ranged from 6.03 to 10.06 mm (average ± standard deviation: 7.52 ± 0.84 mm). Reproduction was continuous with a gradual increase from April to June 2012. No significant relationship between frequency of ovigerous females and environmental variables was observed. The fecundity showed a positive linear relation with the carapace length and the number of eggs varied from 33 to 389 (average ± standard deviation: 203 ± 78.06 eggs/female). A dominance of eggs at an early stage was observed in most months. There was an increase in the size/volume of eggs from early to late embryonic stage. Ovigerous females produced eggs at the same development stage, with the same size and volume regardless of their body size. The results demonstrated higher similarity of this population to other continental M. amazonicum populations than from estuarine ones, showing the environment influence in the life-history of individuals.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Reproductive biology of Macrobrachium amazonicum (Heller, 1862) (Decapoda: Palaemonidae) in a reservoir situated in Minas Gerais State, southeastern Brazil

Silva

Jacobucci

Mossolin

2017

lajar

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“…As maiores fêmeas carregam maior quantidade de ovos, devido ao aumento do seu espaço abdominal utilizado para a incubação (Antunes & Oshiro, 2004). Essa relação direta evidencia um padrão verificado em outros carídeos como M carcinus, M. acanthurus e M. potiuna estudados, respectivamente por Lobão et al (1985), Valenti et al (1989) e Antunes & Oshiro (2004).…”

Section: Barros-alves Et Al (2012) Verificaram Período Reprodutivounclassified

“…Esse padrão, também pode ser observado em M. potiuna (Souza & Fontoura, 1996;Müller et al, 1999;Lima & Oshiro, 2000;Antunes & Oshiro, 2004). No entanto, espécies como M. acanthurus (Wiegmann, 1836), M. carcinus (Linnaeus, 1758) e M. olfersii (Wiegmann, 1836), apresentam alta fecundidade e menor volume e dimensão dos ovos (Valenti et al, 1989;Müller et al, 1999;Nazari et al, 2003).…”

Section: Barros-alves Et Al (2012) Verificaram Período Reprodutivounclassified

Biologia reprodutiva de Macrobrachium jelskii (Crustacea, Decapoda, Palaemonidae) no Rio São Francisco, Minas Gerais, Brasil

Soares

Oshiro

Toledo

2015

Iheringia, Sér. Zool.

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ABSTRACT. Reproductive biology of the shrimp Macrobrachium jelskii (Crustacea, Decapoda, Palaemonidae) in São Francisco River, Minas Gerais, Brazil. The objective was evaluate the reproductive biology of Macrobrachium jelskii (Miers, 1877) The netting mouth had 1 m² and the mesh 1.42 mm that it was passed under the marginal vegetation and the water next to the bank during 30 minutes. In the laboratory, specimens were identified, measured and sexed. A total of 2,945 specimens were captured in the upstream, 1,064 males and 1,857 females (1,653 non-ovigerous and 204 ovigerous) and 1,973 individuals in the downstream, 1,120 males and 841 females (643 non-ovigerous and 198 ovigerous). The sex ratio differed significantly for females of M. jelskii in upstream (0.57, χ2 = 215.28, p < 0.01), and males in the downstream (1.33, χ2 = 39.69, p < 0.01). In both sites the reproductive period was a continuous -seasonal with the peak occurring in January and November for shrimps of upstream and downstream, respectively. The mean fecundity of M. jelskii was 37 ± 14 eggs (5-78 eggs) in the upstream of the dam and 35 ± 14 eggs (5-69 eggs) in the downstream of the dam. The sex ratio showed deviation to males of M. jelskii in the downstream suggesting that females presenting behavior of hiding in the marginal vegetation. And in the upstream the sex was deviate to females, demonstrating the actual proportion of males and females of the population, probably because females do not find places to hide. The eggs size carried by females downstream was influenced by the low water temperatures from the dam. KEYWORDS.Freshwater shrimp, sex ratio, reproductive period, sexual maturity and fertility. (Miers, 1877) no Rio São Francisco, com ênfase na razão sexual, período reprodutivo, maturidade sexual e fecundidade. As coletas foram realizadas mensalmente entre março de 2005 e fevereiro de 2006 exceto nos meses de abril e outubro, nos dois pontos de coleta do Rio São Francisco, Represa de Três Marias (Estação Ecológica de Pirapitinga), a montante da barragem da usina hidroelétrica de Três Marias e a jusante da barragem, localizados no município de Três Marias, região central de Minas Gerais, Brasil. O puçá de 1 m² de boca e malha de 1,42 mm foi passado sob a vegetação marginal e na água à margem dos dois pontos de coleta, por um coletor em um período de até 30 minutos. Em laboratório, os espécimes foram identificados, mensurados e sexados. Um total de 2.945 espécimes foi analisado a montante, no qual correspondem a 1.064 machos e 1.857 fêmeas (1.653 não ovígeras e 204 ovígeras) e 1.973 a jusante, onde 1.120 machos e 841 fêmeas (643 não ovígeras e 198 ovígeras). A razão sexual diferiu significativamente a favor de fêmeas de M. jelskii a montante (0,57; χ2= 215,28; p < 0.01) e a favor dos machos a jusante (1,33; χ2= 39,69; p < 0.01). Ambas as populações possuem um período reprodutivo contínuo-sazonal com pico em janeiro e novembro para os camarões a montante e a jusante, respectivamente. A fecundidade média de M. jelskii foi de 37 ± 14 ovos (5...

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“…The knowledge of freshwater decapods in Brazil Atlantic coast has increased during the last decades, especially regarding their taxonomy, distribution (Bond-Buckup and Buckup, 1989;Magalhães, 2003;Magalhães et al, 2005;Mossolin and Mantelatto, 2008;Sampaio et al, 2009;Mossolin et al, 2016;Rocha and Bueno, 2011) and population structure (Ammar et al, 2001;Albertoni et al, 2002;Antunes and Oshiro, 2004;Mossolin and Bueno, 2002;Collins et al, 2006;Mattos and Oshiro, 2009). However, there is a lack of studies assessing effects of stream environmental variables on decapod communities in this area, which restricts our ability to conduct efforts for their conservation.…”

Section: Introductionmentioning

confidence: 99%

Distribution and abundance of freshwater decapods in an Atlantic rainforest catchment with a dammed future

2017

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Variations in physical characteristics along the course of a river influence habitat availability which reflects in species distribution. Knowledge of ecology and diversity of lotic species is important for evaluating how river ecosystems will respond to environmental impacts. Freshwater decapods are a group of high ecological and economic importance, but the knowledge about factors influencing their distribution is scarce in Brazil. We performed a survey of decapods to describe their abundance and distribution as well as to study their relationships with stream physical variables and especially their association with different substrates types. We studied 23 sites located in 15 tributaries of Guapiaçú River, RJ, where we collected decapods in different substrates types and measured a set of physical variables. We found five decapods species, including amphidromous and non-amphidromous shrimps and crabs. Decapods were strongly associated with leaf-litter substrates and their abundance was related to a multivariate axis describing longitudinal changes in stream characteristics. We concluded that decapods occurring in the Guapiaçú catchment inhabit mainly small streams with preserved riparian forests where they find shelter and potential prey of invertebrates. The ongoing project to build a dam on the Guapiaçú River will have negative consequences to migrating shrimps and we strongly recommend that mitigating actions, such the construction of structures to allow the passage of migrating fauna, should be taken.Keywords: shrimps, environmental factors, leaf litter, tropical stream, damming. Distribuição e abundância de decápodes de água doce e sua associação com variáveis ambientais em uma bacia hidrográfica de Mata Atlântica que será represada ResumoVariações nas características físicas de um rio ao longo do seu curso influenciam a disponibilidade de habitas e dessa forma a distribuição de espécies. O conhecimento sobre a ecologia e diversidade de espécies lóticas é importante para avaliar como esses ecossistemas responderão a impactos ambientais. Decápodes de água doce são um grupo de grande importância ecológica e econômica, contudo o conhecimento sobre fatores influenciando sua distribuição ainda é escasso no Brasil. Nós realizamos um levantamento de decápodes para descrever sua abundância e distribuição, bem como estudar sua relação com características físicas dos rios, especialmente sua associação com tipos diferentes de substrato. Nós estudamos 23 localidades distribuídas em 15 rios tributários do Rio Guapiaçú, RJ, onde coletamos decápodas em diferentes tipos de substratos e medimos um conjunto de variáveis físicas. Nós encontramos cinco espécies de decápodas incluindo camarões anfídromos e não anfídromos e caranguejos. Esses organismos foram fortemente associados a substratos de folhiço alóctone e sua abundância foi relacionada com um eixo PCA que descreve as mudanças nas características físicas longo do curso do rio. Nós concluímos que os decápodas que ocorrem na bacia do Rio Guapiaçú habitam princi...

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Aspectos reprodutivos do camarão de água doce Macrobrachium potiuna (Müller) (Crustacea, Decapoda, Palaemonidae) na Serra do Piloto, Mangaratiba, Rio de Janeiro, Brasil

Cited by 21 publications

References 13 publications

Reproductive biology of Macrobrachium amazonicum (Heller, 1862) (Decapoda: Palaemonidae) in a reservoir situated in Minas Gerais State, southeastern Brazil

Reproductive biology of Macrobrachium amazonicum (Heller, 1862) (Decapoda: Palaemonidae) in a reservoir situated in Minas Gerais State, southeastern Brazil

Biologia reprodutiva de Macrobrachium jelskii (Crustacea, Decapoda, Palaemonidae) no Rio São Francisco, Minas Gerais, Brasil

Distribution and abundance of freshwater decapods in an Atlantic rainforest catchment with a dammed future

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