An in-depth study of the biology, trophic ecology and catchability of the invasive pufferfish Lagocephalus sceleratus from southern Turkey, eastern Mediterranean Sea

Hasan Ersönmez; Caner  Enver Özyurt; Sinan  Mavruk; Taner Yıldız; Aylin Ulman

doi:10.3989/scimar.05351.075

Autores/as

Hasan Ersönmez Cukurova University, Fisheries Faculty https://orcid.org/0009-0006-9370-7719
Caner Enver Özyurt Cukurova University, Fisheries Faculty https://orcid.org/0000-0002-6502-982X
Sinan Mavruk Cukurova University, Fisheries Faculty https://orcid.org/0000-0003-1958-0634
Taner Yıldız Department of Fisheries Technology and Management, Faculty of Aquatic Sciences, Istanbul University https://orcid.org/0000-0003-3140-5118
Aylin Ulman Mersea Marine Consulting https://orcid.org/0000-0002-1904-8050

DOI:

https://doi.org/10.3989/scimar.05351.075

Palabras clave:

especies no autóctonas (ENA), pez globo, Captura por Unidad de Esfuerzo (CPUE), envejecimiento, análisis del contenido estomacal, nivel trófico

Resumen

El pez globo (Lagocephalus sceleratus) es una especie invasora de gran preocupación. Es necesario controlar su población para mitigar sus impactos nocivos en los ecosistemas marinos, los pescadores, la pesca y la salud humana. Este estudio investiga minuciosamente la biología, la dieta y la capturabilidad del stock de L. sceleratus en Finike, Turquía, desde marzo de 2017 hasta febrero de 2018, con el fin de mejorar la gestión de la invasión. Se muestreó un total de 751 ejemplares para este estudio, con una proporción de machos/hembras de 1,25/1. L. sceleratus alcanza la madurez sexual a los tres años y medio de edad, y la Lm50 fue de 41,39 cm para los machos y 42,08 cm para las hembras. Su temporada de desove en esta región fue de junio a agosto, alcanzando su punto máximo en julio. Su dieta consistía principalmente en crustáceos en primavera, peces en verano y tanto peces como crustáceos en invierno. Esta especie consumía una gran cantidad de otras especies de peces globo, lo que representaba más de una cuarta parte de su dieta de peces. El nivel trófico de L. sceleratus fue de 4,41, lo que demuestra que L. sceleratus es en efecto un carnívoro depredador de alto nivel en el Mar Mediterráneo Oriental. Se encontró ingestión de partes de artes de pesca en aproximadamente el 10% de los peces, como trozos de redes y anzuelos. Una ligera modificación del palangre utilizando líneas de acero y un anzuelo giratorio resultó en valores duplicados de CPUE en comparación con palangres estándar, lo que se puede utilizar para enfocar y controlar más de esta especie invasora, lo cual es una prioridad nacional.

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