Desenvolvimento larval de Brycon hilarii (Characiformes, Characidae)

Oliveira, Fernando Garcia de; Bialetzki, Andréa; Gomes, Luiz Carlos; Santin, Miriam; Taguti, Tátia Leika

doi:10.1590/s0073-47212012000100009

Cited by 24 publications

(30 citation statements)

References 22 publications

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“…The rapid embryonic development (14 h at an average temperature of 28.2 ºC) of P. reticulatum in the present study can also be observed in species using the same reproductive strategy (long-distance migratory species). This rapid embryonic development may allow longer survival, as the species does not have parental care (Oliveira et al, 2012). Pérez et al (2001) reported 14 h of incubation at a temperature of 27 ºC, corroborating the present study.…”

Section: Discussionsupporting

confidence: 90%

Characterization of the early development of Pseudoplatystoma reticulatum Eigenmann & Eigenmann, 1889 (Siluriformes: Pimelodidae) from the Paraguay River Basin

et al. 2016

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This study described the initial development of Pseudoplatystoma reticulatum, as well as changes in growth patterns. Morphometric and meristic variables were analyzed during embryonic, larval and juvenile periods, even as allometric growth coefficients for larvae and juveniles. Eggs showed an average diameter of 1.79 mm and broad perivitelline space (23.41%). The total length (TL) of the larvae ranged from 3.05 to 25.72 mm, and the total number of myomeres ranged from 45 to 50 (preanal = 13-16 and postanal = 30-35). Initial pigmentation is poor, concentrated at the extremities of the yolk sac. In the flexion stage, the pigmentation intensifies and forms a longitudinal stripe extending from the snout to the operculum and two longitudinal stripes on the body, one dorsal and the other ventral, that unite at the caudal peduncle. At first, there is a differential growth of the head and tail, and then there is the growth of the body, which shows changes in the ontogenetic priorities of feeding, swimming, and breathing capacities. Our results are very important for ecology, systematics, and hatchering, especially in terms of ontogenetic variation in morphology, growth, feeding, behavior, and mortality of P. reticulatum.Este estudo descreveu o desenvolvimento inicial de Pseudoplatystoma reticulatum, bem como as mudanças nos padrões de crescimento, testando a hipótese da ocorrência de crescimento diferencial durante a ontogenia inicial da espécie. Variáveis morfométricas e merísticas foram analisadas durante os períodos embrionário, larval e juvenil, assim como os coeficientes de crescimento alométrico para larvas e juvenis. Os ovos apresentaram diâmetro médio de 1,79 mm e espaço perivitelino amplo (23,41%). O comprimento total (CT) das larvas variou de 3,05 a 125,72 mm e o número total de miômeros de 45 a 50 (pré-anal=13-16 e pós-anal=30-35). A pigmentação inicial é escassa, concentrada nas extremidades do saco vitelino. A partir do estágio de flexão a pigmentação se intensifica, formando uma faixa longitudinal que se estende do focinho ao opérculo e duas no corpo, uma dorsal e outra ventral, que se unem no pedúnculo caudal. Inicialmente há um crescimento diferenciado da cabeça e da cauda, com posterior crescimento do tronco, que demonstra mudanças nas prioridades ontogenéticas para as capacidades de alimentação, natação e respiração. Nossos resultados são de grande importância para a ecologia, sistemática e larvicultura, especialmente em termos de variação ontogenética na morfologia, crescimento, alimentação, comportamento e mortalidade P. reticulatum.

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Section: Discussionsupporting

confidence: 90%

Characterization of the early development of Pseudoplatystoma reticulatum Eigenmann & Eigenmann, 1889 (Siluriformes: Pimelodidae) from the Paraguay River Basin

et al. 2016

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“…Characterizing the shape and distribution of pigmentation is also widely used in taxonomic studies to identify larvae and juveniles (Nascimento & Araújo-Lima, 1993;Meijide & Guerrero, 2000;Godinho, Santos, & Sato, 2003;Oliveira et al, 2012). In the cichlids A. ocellatus (Nakatani et al, 2001;Paes et al, 2011), O. niloticus (Nakatani et al, 2001;Fujimura & Okada, 2007), C. nigroasciatum (Martinez & Murillo, 1987), H. nicaraguensis (Molina, 2011) and S. pappaterra, the presence of dendritic pigments in the upper region of the head at the onset of the larval period appears to be a common trait.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…This difficulty stems largely from the significant morphological similarities between different taxonomic groups during early stages of development (Bialetzki, Sanches, Baumgartner, & Nakatani, 1998) and because species spawn in the same areas at the same times of the year (Nakatani et al, 2001). Hence, the taxonomic characterization of early fish development could help us to better understand the ecological relationships between species during development within their natural environments, which could yield tools for more effective environmental assessments (Oliveira, Bialetzki, Gomes, Santin, & Taguti, 2012).Cichlidae is the second largest of the 160 characterized families within the order Perciformes, and it is composed of nearly 1 300 species worldwide and approximately 291 in South America alone (Kullander, 1998). Fish from this family exhibit parental care (generally performed by the female) and are divided into two groups: substrate spawners, which attach their eggs to a substrate and exhibit parental care by both parents, and mouth-brooders, which carry their offspring in their mouths (Ribbink, 1990).…”

mentioning

confidence: 99%

“…environments, which could yield tools for more effective environmental assessments (Oliveira, Bialetzki, Gomes, Santin, & Taguti, 2012).…”

mentioning

confidence: 99%

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Early development in the mouth-brooding cichlid fish Satanoperca pappaterra (Perciformes: Cichlidae)

Lopes

Oliveira²,

Bialetzki

et al. 2015

RBT

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Abstract:The Neotropical region exhibits the largest diversity of fish worldwide; however, little is known about the early development of fish species from this region. Therefore, to contribute to this knowledge, this study aimed to morphologically describe the early stages of development (eggs, larvae and juveniles) of S. pappaterra using morphometric and meristic traits, and to assess changes in growth rates throughout larval and juvenile development by analyzing the relationships between various morphometric traits using analytical regression models. Both juvenile and adult individuals with mouth-brooded offspring were collected along the basins of the Cuiabá and Manso Rivers in the state of Mato Grosso, Brazil between March 2000 and March 2004. After the adults were identified, the offspring were classified according to its stage (embryonic, larval or juvenile period), and various morphometric and meristic variables were individually measured (when possible). The eggs of this species are yellow in color, oval shaped, show dendritic pigmentation within their yolk, have small to moderately sized perivitelline spaces and lack a mucous membrane and oil droplets. The horizontal and vertical diameters of the sample yolks ranged from 1.43mm to 2.70mm and 1.05mm to 1.68mm, respectively. The standard length of the larval period varied from 4.30mm to 7.16mm, and the standard length of the juvenile period varied from 10.29mm to 24.57mm. Larvae exhibit yolk sacs with internal dendritic pigmentation and dark punctate pigmentation in the dorsal and ventral body regions, whereas irregular transverse spots along the flanks are observed during the juvenile period. Adhesive organs are only present during the yolk-sac stage and at the beginning of the flexion stage. The mouth is terminal during all stages of development. The myomere number varied from 22 to 29 (9 to 16 pre-anal and 10 to 16 post-anal), and the maximal numbers of fin rays and spines were as follows: dorsal, xvI+10; anal, Iv+8; pectoral, 16; and pelvic, I+8. Growth analyses identified periods of important change in larval morphology (i.e., metamorphosis), particularly during the flexion and post-flexion stages and in juveniles. Therefore, the morphological development of S. pappaterra is consistent with the ecological requirements of this species, which primarily occurs in structured lentic environments with aquatic macrophytes. Rev. The greatest difficulty inherent to the study of freshwater ichthyoplankton is properly identifying fish eggs and larvae in their natural environments. This difficulty stems largely from the significant morphological similarities between different taxonomic groups during early stages of development (Bialetzki, Sanches, Baumgartner, & Nakatani, 1998) and because species spawn in the same areas at the same times of the year (Nakatani et al., 2001). Hence, the taxonomic characterization of early fish development could help us to better understand the ecological relationships between species during development within their natural envir...

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Early development and allometric growth patterns of the grumatã (Prochilodus vimboidesKner, 1859)

Souza

Melo

Caramaschi

et al. 2015

Zygote

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The objective of this study was to characterize the early development and allometric growth of the grumatã (Prochilodus vimboides). We describe a sample of 266 eggs and larvae obtained through induced spawning. The eggs were spherical (mean 3.7 mm diameter), exhibited a yellow yolk and were non-adhesive and pelagic after fertilization and hydration. The time elapsed between the early cleavage and post-flexion stages was considered short (328 hours, 8054 hour-degrees) in regard to the development times of other Neotropical rheophilic species, but time to hatching was considerably longer than in other Prochilodus species. The most notable anatomical changes were observed between the end of the yolk larval stage and the beginning of the pre-flexion stage, when the larvae displayed directed swimming and the digestive system became functional, enabling the transition from endogenous to exogenous feeding. After hatching, the larvae grew from 6.04 to 15.15 mm in total length average. Two growth phases were observed at this stage: a non-linear asymptotic curve in yolk-sac larvae, and a linear constant-rate growth phase after exogenous feeding started. Allometric growth related to standard length was positive for head length, negative for eye diameter, and switched between phases from negative to positive in body depth and head height. Morphological development and allometric growth in different larval phases impose drastic anatomical and physiological changes that are synchronic with habitat changes and the flood cycles during the reproductive period.

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Desenvolvimento larval de Brycon hilarii (Characiformes, Characidae)

Cited by 24 publications

References 22 publications

Characterization of the early development of Pseudoplatystoma reticulatum Eigenmann & Eigenmann, 1889 (Siluriformes: Pimelodidae) from the Paraguay River Basin

Characterization of the early development of Pseudoplatystoma reticulatum Eigenmann & Eigenmann, 1889 (Siluriformes: Pimelodidae) from the Paraguay River Basin

Early development in the mouth-brooding cichlid fish Satanoperca pappaterra (Perciformes: Cichlidae)

Early development and allometric growth patterns of the grumatã (Prochilodus vimboidesKner, 1859)

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