Bancos De Macrófitas Aquáticas Como Locais De Desenvolvimento Das Fases Iniciais De Peixes Em Várzea Do Baixo Amazonas

Oliveira, Lucas Silva de; Cajado, Ruineris Almada; Santos, Luan Robson Bentes dos; Suzuki, Maria Aparecida de Lima; Zacardi, Diego Maia

doi:10.4257/oeco.2020.2403.09

Cited by 11 publications

(19 citation statements)

References 24 publications

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“…Thus, this stage of food transition that occurs in preflexion, for T. auritus , is characterized as a critical phase of complex adaptations, in which larvae need to find adequate food before completely ending their endogenous reserves (Kamler, 1992; Moguel‐Hernández et al., 2016; Ponte et al, 2016). However, the success in survival of the early stages of T. auritus is closely linked to the larva's ability to reach complex environments such as lowland areas, composed of aquatic macrophytes, which are conducive to the feeding, protection, and growth of these individuals (Oliveira, Cajado, et al., 2020; Zacardi, Bittencourt, et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

“…T. auritus larvae in the preflexion stages are pelagic and transparent (Cajado et al., 2020), to pigmentation in that period represents an adaptive camouflage strategy in the water column and avoids attracting attention from visual predators (Sanches et al., 2001; Silva et al., 2021). While in the final stages of development, most of these individuals are colonizing water macrophyte stands (Oliveira, Suzuki, et al., 2020; Oliveira, Cajado, et al., 2020). In this way, intense pigmentation acts as camouflage while using structured environments (Machado‐Allison et al., 2020; Santos et al., 2017).…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the pigmentation pattern, the total or partial number of myomeres is a relevant data for the identification of some fish groups in the larval phase (Oliveira, Suzuki, et al., 2020; Oliveira, Cajado, et al., 2020; Santos et al., 2020), mainly during the early stages of preflexion and flexion. T. auritus can be easily distinguished from other congeners sympatric in the Lower Amazon for having a greater number of myomeres (45–48) that differ from T. angulatus (34–38), T. pictus (36–38), T. rotundatus (39–40) e T. albus (39–40) (Table 3).…”

Section: Discussionmentioning

confidence: 99%

“…However, the success in survival of the early stages of T. auritus is closely linked to the larva's ability to reach complex environments such as lowland areas, composed of aquatic macrophytes, which are conducive to the feeding, protection, and growth of these individuals (Oliveira, Cajado, et al, 2020;Zacardi, Bittencourt, et al, 2020). Changes in the intensity of pigmentation observed throughout the initial development of T. auritus, reflect habitat changes and the behavioral characteristics of the specie.…”

Section: Discussionmentioning

confidence: 99%

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Early development of the Neotropical fish known as long sardine Triportheus auritus (Valenciennes 1850) (Characiformes, Triportheidae)

et al. 2021

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Larvae and juveniles of long sardine, Triportheus auritus, from the lower Amazon river was described, evaluating ontogenetic changes in their external morphology, pigmentation, fin development, morphometry, and meristics. A total of 93 individuals, 83 larvae and 10 juveniles were analyzed, they were captured monthly between 2014 and 2019 in the Amazon river channel and in macrophytes aquatic stands in the alluvial plains located in the lower Amazon River. From each specimen, morphometric and meristic data were measured and then the growth pattern between morphometric variables was analyzed. The larvae have an elongated body in a fusiform shape, superior mouth, simple nostril, pigmented spherical eyes and long intestine, surpassing the median region of the body. Initial pigmentation is scarce, but intensifies through development forming a pattern composed of three longitudinal bands concentrated in the ventral, cephalo‐dorsal and lateral line regions. There are also pigments in the mandible, surrounding the mouth, under the swim bladder, intestine and fins. The sequence of complete fin formation is: caudal, anal, dorsal, pectoral and pelvic. The total number of myomeres ranged from 45 to 48 (25–29 preanal and 17–22 postanal). Morphometric relationships indicated differential growth for measurable morphometric parameters, with abrupt growth of snout length, head length and body height in the transition from flexion to postflexion stages. The pre‐dorsal distance showed a decrease in the growth rate at the threshold from the larval to the juvenile period. The pre‐pectoral and pre‐anal distances showed negative allometric growth. In conclusion, the combination of body shape pigmentation pattern and, the formation sequence of fins allow the identification of the genus and coupled with the number of myomeres, morphometric relationships, and ray numbers of the anal fin ensure the differentiation of T. auritus from the other congeneric species. The metamorphosis occurred mainly at the end of the larval period and it is related to changes in the physiological and ecomorphological characteristics of the species.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Early development of the Neotropical fish known as long sardine Triportheus auritus (Valenciennes 1850) (Characiformes, Triportheidae)

et al. 2021

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“…This dynamic allows the transport of organisms to flooded wetlands, with high productivity and complex habitats (e.g. aquatic macrophytes), which favors biological recruitment (Nakajima et al., 2017; Oliveira et al., 2020; Stuart & Sharpe, 2020; Zacardi et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

Ontogenetic structure and distribution patterns of ichthyoplankton in the confluence zone of two river systems in the Eastern Amazon

Cajado¹,

Oliveira²,

Silva³

et al. 2020

J Appl Ichthyol

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The aquatic environments of the Amazon region present a wide environmental heterogeneity in the rivers that form the watershed and are influenced by the different landscape formations composed by interactive ecosystems and climatic, geological and vegetation conditions (Rebouças et al., 1999; Silva et al., 2013). The Amazon river is the main river system of the basin and drains water from various tributaries. This massive number of tributaries and their heterogeneity allow the interaction between water bodies with different environmental gradients without immediately mixing (Franzinelli, 2011), which forms an extensive confluence border, such as that observed between the Tapajós and Amazon rivers, in the lower Amazon region, Brazil. The confluence zones between rivers are extremely important for aquatic communities, as they provide particular habitats, favor biodiversity and harbor intense ecological functions, acting as biological hotspots (Benda et al., 2004; Rice et al., 2008). These ecotones function as a key habitat structure and work as filters in the dispersion of fish in river systems, influencing changes in species composition at small spatial scales (Czeglédi et al., 2016; Thornbrugh & Gido, 2010). In addition, they constitute spatial elements of the

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The retention of plastic particles by macrophytes in the Amazon River, Brazil

Guimarães,

Pereira,

de Moraes

et al. 2024

Environ Sci Pollut Res

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Bancos De Macrófitas Aquáticas Como Locais De Desenvolvimento Das Fases Iniciais De Peixes Em Várzea Do Baixo Amazonas

Cited by 11 publications

References 24 publications

Early development of the Neotropical fish known as long sardine Triportheus auritus (Valenciennes 1850) (Characiformes, Triportheidae)

Early development of the Neotropical fish known as long sardine Triportheus auritus (Valenciennes 1850) (Characiformes, Triportheidae)

Ontogenetic structure and distribution patterns of ichthyoplankton in the confluence zone of two river systems in the Eastern Amazon

The retention of plastic particles by macrophytes in the Amazon River, Brazil

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