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Spawning induction and embryonic development of Salminus hilarii (Characiformes: Characidae).
Zygote. 2020 May 08 [Online ahead of print]Z

Abstract

The present study aimed to evaluate two different methods of artificial reproduction induction, and characterize the embryonic development of Salminus hilarii. Different than observed for other tropical fish species, artificial reproduction induction followed by hand-stripping of gametes was considered unfeasible for S. hilarii, as no gamete fertilization was observed. However, females that were induced and spawned naturally presented a fertilization rate of 65.64 ± 0.54%. With a mean temperature of 26.20 ± 0.90ºC it was possible to clearly distinguish a large perivitelline space at 14 min after fertilization (AF) and at 49 min AF more than 50% of the embryos presented two blastomeres, and these cleavages occurred until 1 h 54 min AF. The gastrula phase was characterized at 3 h 56 min AF, and blastopore closure was observed at 8 h 31 min AF. At 9 h 1 min, organogenesis started, with a clear distinction of the yolk mass, embryonic axis, cephalic and caudal regions; at 11 h 51 min AF the embryos already had advanced segmentation and a free tail. Total hatching occurred at 21 h 17 min and after opening the mouth, which occurred at 33 h 9 min, the larvae of S. hilarii presented a strong and characteristic cannibalism. This information can be considered fundamental to improving S. hilarii production in captivity and for collaboration with a conservation programme in the upper Tietê river basin.

Authors+Show Affiliations

Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes. Av. Dr. Cândido Xavier de Almeida Souza, 200, 08780-911, Mogi das Cruzes, SP, Brasil.Centro de Aquicultura, Universidade Estadual Paulista 'Júlio de Mesquita Filho' (CAUNESP). Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, SP, Brasil.Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo. Rua do Matão, Trav. 14, no. 321, 05508-090, São Paulo, SP, Brasil.Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes. Av. Dr. Cândido Xavier de Almeida Souza, 200, 08780-911, Mogi das Cruzes, SP, Brasil.Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo. Rua do Matão, Trav. 14, no. 321, 05508-090, São Paulo, SP, Brasil.Centro de Biologia Marinha, Universidade de São Paulo. Rodovia Manoel Hipólito do Rego, km. 131,5, 11612-109, São Sebastião, SP, Brasil.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32383416

Citation

Araújo, Bruno Cavalheiro, et al. "Spawning Induction and Embryonic Development of Salminus Hilarii (Characiformes: Characidae)." Zygote (Cambridge, England), 2020, pp. 1-11.
Araújo BC, Mello PH, Moreira RG, et al. Spawning induction and embryonic development of Salminus hilarii (Characiformes: Characidae). Zygote. 2020.
Araújo, B. C., Mello, P. H., Moreira, R. G., Hilsdorf, A. W. S., Marques, V. H., & Honji, R. M. (2020). Spawning induction and embryonic development of Salminus hilarii (Characiformes: Characidae). Zygote (Cambridge, England), 1-11. https://doi.org/10.1017/S0967199420000210
Araújo BC, et al. Spawning Induction and Embryonic Development of Salminus Hilarii (Characiformes: Characidae). Zygote. 2020 May 8;1-11. PubMed PMID: 32383416.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Spawning induction and embryonic development of Salminus hilarii (Characiformes: Characidae). AU - Araújo,Bruno Cavalheiro, AU - Mello,Paulo Henrique, AU - Moreira,Renata Guimarães, AU - Hilsdorf,Alexandre Wagner Silva, AU - Marques,Victor Hugo, AU - Honji,Renato Massaaki, Y1 - 2020/05/08/ PY - 2020/5/9/entrez KW - Artificial reproduction KW - Brazilian river KW - Eggs KW - Larvae KW - Tabarana SP - 1 EP - 11 JF - Zygote (Cambridge, England) JO - Zygote N2 - The present study aimed to evaluate two different methods of artificial reproduction induction, and characterize the embryonic development of Salminus hilarii. Different than observed for other tropical fish species, artificial reproduction induction followed by hand-stripping of gametes was considered unfeasible for S. hilarii, as no gamete fertilization was observed. However, females that were induced and spawned naturally presented a fertilization rate of 65.64 ± 0.54%. With a mean temperature of 26.20 ± 0.90ºC it was possible to clearly distinguish a large perivitelline space at 14 min after fertilization (AF) and at 49 min AF more than 50% of the embryos presented two blastomeres, and these cleavages occurred until 1 h 54 min AF. The gastrula phase was characterized at 3 h 56 min AF, and blastopore closure was observed at 8 h 31 min AF. At 9 h 1 min, organogenesis started, with a clear distinction of the yolk mass, embryonic axis, cephalic and caudal regions; at 11 h 51 min AF the embryos already had advanced segmentation and a free tail. Total hatching occurred at 21 h 17 min and after opening the mouth, which occurred at 33 h 9 min, the larvae of S. hilarii presented a strong and characteristic cannibalism. This information can be considered fundamental to improving S. hilarii production in captivity and for collaboration with a conservation programme in the upper Tietê river basin. SN - 1469-8730 UR - https://www.unboundmedicine.com/medline/citation/32383416/Spawning_induction_and_embryonic_development_of_Salminus_hilarii_(Characiformes:_Characidae) L2 - https://www.cambridge.org/core/product/identifier/S0967199420000210/type/journal_article DB - PRIME DP - Unbound Medicine ER -
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