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Title: | Biology and ecology of lionfish (Pterois volitans) in the Corales de Profundidad Natural National Park, Colombian Caribbean. |
Author: | Sanjuan-Muñoz, Adolfo Bustos-Montes, Diana Polo-Silva, Carlos Julio Henao-Castro, Alejandro Marrugo, Milena Delgado-Huertas, Antonio Vinyoles Cartanyà, Dolors Acero Pizarro, Arturo |
Keywords: | Cadenes alimentàries (Ecologia) Reproducció Invasions biològiques Isòtops estables en ecologia Food chains (Ecology) Reproduction Biological invasions Stable isotopes in ecological research |
Issue Date: | Jun-2022 |
Publisher: | Instituto de Investigaciones Marinas y Costeras José Benito Vives de Andréis INVEMAR |
Abstract: | En el ambiente mesofótico se observaron 237 especímenes de Pterois, mayoritariamente en la zona mesofótica superior. Los machos fueron más grandes que las hembras con modelos de crecimiento diferenciados. Se identificaron 16 ítems de presas, siendo los peces Acanthuridae y Monacanthidae y los camarones Penaeidae las más importantes. La media de δ13C fue -17,08 ± 0,36 y la de δ15N fue 8,68 ± 0,46 , no detectándose diferencias entre sexos. La especie ocupa un nicho isotópico menos extenso que en sectores someros, tiene traslapo entre sexos y hábitos tróficos especialistas (Levin = 0,22). En hembras el factor de condición (FC), el índice gonadosomático (IGS) y el índice hepatosomático (IHS) aumentaron con el desarrollo gonadal alcanzando pico en fase de desove activo, y disminuyendo en regresión. Los machos tuvieron un FC similar al de hembras en desove, pero el IGS y el IHS fueron menores. Lionfish was studied in the mesophotic environment. 237 specimens were observed, most in the upper mesophotic zone. Males were larger than females and differences between sexes in growth models were found. Sixteen prey items were identified, the most important being the teleost families Acanthuridae and Monacanthidae, and the crustacean Penaeidae. The mean of δ13C was -17.08 ± 0.36 and δ15N was 8.68 ± 0.46 , with no differences between sexes. Lionfish occupies a less extensive isotopic niche in mesophotic environment than in shallow sectors; there is an isotopic niche overlap between sexes. Likewise, lionfish has specialized trophic habits. All specimens were mature and in females regression phase predominated. In females, condition factor (CF), gonadosomatic index (GSI) and hepatosomatic index (HSI) increased with gonadal development, reaching peak in the active spawning phase, and decreasing in regression. Males had a condition factor similar to spawning females, but IGS and IHS were lower. |
Note: | Reproducció del document publicat a: https://doi.org/10.25268/bimc.invemar.2022.51.1.1087 |
It is part of: | Butlletin of Marine and Coastal Research = Boletín de Investigaciones Marinas y Costeras , 2022, vol. 51, num. 1, p. 75-98 |
URI: | http://hdl.handle.net/2445/198595 |
Related resource: | https://doi.org/10.25268/bimc.invemar.2022.51.1.1087 |
ISSN: | 0122-9761 |
Appears in Collections: | Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) |
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