Estrutura populacional de Macrobrachium amazonicum em dois lagos de várzea da Amazônia

Costa, Tiago Viana da; Mattos, Luciana Antunes de; Machado, Noédson de Jesus Beltrão

doi:10.20950/1678-2305.2016v42n2p281

Cited by 8 publications

(7 citation statements)

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“…These fish have highly hydrodynamic bodies and are able to reach high swimming speeds to capture their prey (Webb 1984, Breda et al 2005, focusing primarily in the pelagic areas (Werner 1977). The second group includes shrimp-eaters, such as P. squamosissimus, which eats shrimp during the season of its high abundance (Merona & Rankin- de-Merona 2004, Costa et al 2016. These fish change their diet to a focus on fish and insects when shrimp availability declines (Hahn et al 1997).…”

Section: Discussionmentioning

confidence: 99%

Diet and ecomorphology of predator fish species of the Amazonian floodplain lakes

et al. 2019

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Amazonian floodplain lakes host a high diversity of predatory fish which coexist and exploit the high diversity of available prey. Morphology could be the characteristic most closely associated with their preferred feeding sources (prey). However, it is unclear whether this association is direct or indirect. If it is indirect, swimming performance or preferential position in the water column could be the most evident characteristic. To examine the degree to which fish morphology of predator fish species is correlated to their dietary inputs, we compared the existence of morphological and feeding dissimilarity among eight predator species with the association between predator morphologies and preferred prey. We collected, measured, and sampled the stomach contents of fish from two lowland floodplain lakes associated with the Solimões River, Brazil, in May, August, and November of 2014. Of 187 collected fish across eight species, five species showed fish to be the most important item in their diets and three preferentially ate shrimp. Principal components analyses of ecomorphological attributes divided the species according to their ability to find the prey, swimming performance of the predator, and prey size. While there was significant distinction between the varying morphologies of predators, we were unable to distinguish between the specific diet of these species and did not find a correlation between morphology and feeding. These results are likely due to the fact that there is great abundance and diversity of available prey in the Amazonian floodplain lakes, so opportunistic feeding may be the primary foraging strategy of predator fish species living in these environments.

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Section: Discussionmentioning

confidence: 99%

Diet and ecomorphology of predator fish species of the Amazonian floodplain lakes

et al. 2019

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“…Therefore, M. amazonicum takes a certain reproductive advantage when compared to M. jelskii. Furthermore, M. amazonicum has shown higher fecundity (Da Silva et al 2004;Costa et al 2016) when compared to M. jelskii (Mossolin et al 2013;Soares et al 2015). It may justify the difference in the abundance between the two species, observed in this study.…”

Section: Discussionmentioning

confidence: 98%

“…There are around 20 species registered in Brazil (Mantelatto et al 2016), from which several are among the most economically important ones, such as Macrobrachium carcinus (Linnaeus 1758), Macrobrachium acanthurus (Wiegmann 1836) and Macrobrachium amazonicum (Heller 1862), (Valenti 1985), and the exotic invasive species Macrobrachium rosenbergii (De Man 1879), which was accidentally introduced as a consequence of their cultivation (Iketani et al 2016). Macrobrachium specimens are used as a protein resource by human obtained in nature-fishing activities or shrimp farming (Maciel and Valenti 2009;Bentes et al 2014;Costa et al 2016;Taddei et al 2017a).…”

Section: Introductionmentioning

confidence: 99%

Morphometric differences between two exotic invasive freshwater caridean species (genus Macrobrachium)

Silva

Alves

Barros-Alves

et al. 2018

Invertebrate Reproduction & Development

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The prawns Macrobrachium amazonicum and Macrobrachium jelskii, have been introduced in the southeastern Brazilian region. Thus, it becomes necessary knowing the reproductive aspects of these invasive species. This study aimed to analyze the relative growth and to estimate the morphological sexual maturity of the freshwater prawn species M. amazonicum and M. jelskii. We collected monthly samples from January through December 2010 in th Rio Grande riverbank. Prawns were measured to their cephalothorax length (CL), length of the pleura of the second abdominal somite in females (PL) and length of the appendix masculina (AML). We analyzed 2937 specimens of M. amazonicum (628 males and 2,309 females) and 2167 specimens of M. jelskii (504 males and 1663 females). We observed different allometric patterns in the relative growth of the AML and PL (both more accentuated in M. amazonicum) between the species. The present results indicate that these species adopt different reproductive strategies, possibly representing adaptations that may have facilitate their establishment in the Rio Grande riverbank. When comparing our results to the ones obtained in previous studies, we observed that the reproductive traits of both species indicate a marked phenotypic plasticity.

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“…Native species showed a lower impact on surrounding biodiversity; LTSs generally fed on detritus and small natural biota, recovering organic matter to trophic webs; and IMTAs use the wastes of one species to feed others, according to the principles of the circular economy. The Amazon River prawn, Macrobrachium amazonicum, is a LTS widely distributed in rivers and lakes of South America [3][4][5]. This species has been primarily exploited by artisanal fisheries [6,7] and has great potential for use in aquaculture [8,9].…”

Section: Introductionmentioning

confidence: 99%

Intensification of Amazon River Prawn Hatchery

Vetorelli,

Rodrigues,

Kimpara

et al. 2024

Fishes

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The effects of the intensification on the performance of the Amazon River prawn hatchery carried out in a simple recirculation system were investigated. Newly hatched larvae were stocked in 120 L tanks at 80, 100, 120 and 140 larvae L−1 in a closed recirculating system. The experiment used a randomized block design with five replicates. An exponential equation was adjusted to express the relationship between the stocking density and productivity (postlarvae L−1). The development, larval quality, survival and postlarval (PL) dry weight did not significantly differ among the treatments (p > 0.05). When 80 larvae were stocked, the productivity (54 ± 11 PL L−1) was lower than those at higher densities (p < 0.05). Stocking 120 and 140 larvae L−1 resulted in higher productivities (75 ± 18 and 80 ± 17 PL L−1, respectively) with a lower use of Artemia nauplii to produce each postlarvae (~1200 Artemia nauplii PL−1). The maximum mean M. amazonicum postlarval production estimated by the exponential model was 93 PL L−1. This means that despite the increase in stocking density, productivity tends to stabilize. The results showed that M. amazonicum tolerates high intensification in recirculating hatchery systems based on a crushed shell bed biofilter, and the intensification optimizes Artemia use.

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Estrutura populacional de Macrobrachium amazonicum em dois lagos de várzea da Amazônia

Cited by 8 publications

References 0 publications

Diet and ecomorphology of predator fish species of the Amazonian floodplain lakes

Diet and ecomorphology of predator fish species of the Amazonian floodplain lakes

Morphometric differences between two exotic invasive freshwater caridean species (genus Macrobrachium)

Intensification of Amazon River Prawn Hatchery

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