Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil

ABSTRACT Specimens of Hippocampus patagonicus obtained in the bycatch of trawling in the states of Rio Grande do Sul (RS) and Rio de Janeiro (RJ) were collected in 2012 (n = 199) and 2014 (n = 157), respectively. Mean height of females of reproductive age in RS was 8.89 ± 1.9 cm, with the fecundity...

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Autores principales:	Silveira,Rosana Beatriz, Silva,José Clebson da, Benício,Lua, Silva,José Rodrigo Santos
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2020
Materias:	Hippocampus patagonicus seahorse bycatch fishing resources reproduction threatened species
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000100047
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spelling	oai:scielo:S0718-560X20200001000472020-05-25Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in BrazilSilveira,Rosana BeatrizSilva,José Clebson daBenício,LuaSilva,José Rodrigo Santos Hippocampus patagonicus seahorse bycatch fishing resources reproduction threatened species ABSTRACT Specimens of Hippocampus patagonicus obtained in the bycatch of trawling in the states of Rio Grande do Sul (RS) and Rio de Janeiro (RJ) were collected in 2012 (n = 199) and 2014 (n = 157), respectively. Mean height of females of reproductive age in RS was 8.89 ± 1.9 cm, with the fecundity of 366 ± 195.8 eggs per clutch, and for males of reproductive age, height was 8.79 ± 1.86 cm and weight 2.3 ± 1.67 g, with 404 ± 99 embryos at each gestation. In RJ, height was 9.69 ± 1.05 cm and weight 2.9 ± 0.9 g, with the fecundity of 277 ± 95.06 eggs per clutch, and for males, height was 10.06 ± 1.02 cm and weight 3.68 ± 1.18 g, with the fecundity of 156.38 ± 66 embryos at each gestation. The equations obtained from the weight (W) to height (H) ratio were: W = 0.002 H3.182, R2 = 0.947 (RS males); W = 0.004 H2.914, R2 = 0.949 (RS females); W = 0.0050 H2.838, R2 = 0.793 (RJ males); W = 0.014 H2.355, R2 = 0.733 (RJ females). RS females produced more eggs (P = 0.023), and males incubated more embryos (P = 0.000) than those of RJ. The mean height of brood pouch formation in males was 4.69 ± 0.48 cm, 95% CI [4.53; 4.86], while the mean height at first sexual maturity was 8.34 cm (95% CI [7.481; 9.046]). Alternative strategies need to be developed for the conservation of H. patagonicus in Brazil.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.48 n.1 20202020-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000100047en10.3856/vol48-issue1-fulltext-2307
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Hippocampus patagonicus seahorse bycatch fishing resources reproduction threatened species
spellingShingle	Hippocampus patagonicus seahorse bycatch fishing resources reproduction threatened species Silveira,Rosana Beatriz Silva,José Clebson da Benício,Lua Silva,José Rodrigo Santos Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil
description	ABSTRACT Specimens of Hippocampus patagonicus obtained in the bycatch of trawling in the states of Rio Grande do Sul (RS) and Rio de Janeiro (RJ) were collected in 2012 (n = 199) and 2014 (n = 157), respectively. Mean height of females of reproductive age in RS was 8.89 ± 1.9 cm, with the fecundity of 366 ± 195.8 eggs per clutch, and for males of reproductive age, height was 8.79 ± 1.86 cm and weight 2.3 ± 1.67 g, with 404 ± 99 embryos at each gestation. In RJ, height was 9.69 ± 1.05 cm and weight 2.9 ± 0.9 g, with the fecundity of 277 ± 95.06 eggs per clutch, and for males, height was 10.06 ± 1.02 cm and weight 3.68 ± 1.18 g, with the fecundity of 156.38 ± 66 embryos at each gestation. The equations obtained from the weight (W) to height (H) ratio were: W = 0.002 H3.182, R2 = 0.947 (RS males); W = 0.004 H2.914, R2 = 0.949 (RS females); W = 0.0050 H2.838, R2 = 0.793 (RJ males); W = 0.014 H2.355, R2 = 0.733 (RJ females). RS females produced more eggs (P = 0.023), and males incubated more embryos (P = 0.000) than those of RJ. The mean height of brood pouch formation in males was 4.69 ± 0.48 cm, 95% CI [4.53; 4.86], while the mean height at first sexual maturity was 8.34 cm (95% CI [7.481; 9.046]). Alternative strategies need to be developed for the conservation of H. patagonicus in Brazil.
author	Silveira,Rosana Beatriz Silva,José Clebson da Benício,Lua Silva,José Rodrigo Santos
author_facet	Silveira,Rosana Beatriz Silva,José Clebson da Benício,Lua Silva,José Rodrigo Santos
author_sort	Silveira,Rosana Beatriz
title	Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil
title_short	Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil
title_full	Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil
title_fullStr	Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil
title_full_unstemmed	Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil
title_sort	biology of hippocampus patagonicus (syngnathidae) in brazilian waters. a species threatened with extinction, with suggestions for the conservation of seahorses in brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000100047
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Biology of Hippocampus patagonicus (Syngnathidae) in Brazilian waters. A species threatened with extinction, with suggestions for the conservation of seahorses in Brazil

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