Abundance patterns at the invasion front: The case of Siganus luridus in Linosa (Strait of Sicily, Central Mediterranean Sea)
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24 janvier 2025
- 10938/25071
- 2-s2.0-85016802458
Ce document est lié à :
Marine and Freshwater Research
Mots-clés
Italy Lessepsian migration Population outbreak Siganidae Mediterranean sea Strait of sicily Siganidae Siganus fuscescens Siganus luridus Abundance estimation Biogeography Biological invasion Geographical distribution Introduced species New record Perciform Population migration Tropical environmentSujets proches
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Azzurro et al., « Abundance patterns at the invasion front: The case of Siganus luridus in Linosa (Strait of Sicily, Central Mediterranean Sea) », American University of Beirut ScholarWorks
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Résumé
The dusky spinefoot (Siganus luridus) has spread through much of the eastern Mediterranean since its introduction in 1920. In the present study, we monitored the abundance of this invader around the island of Linosa (Strait of Sicily), where the species was first recorded in 2003. Data were periodically collected along two temporal windows, 2005-06 and 2012-15, by both underwater visual census and surface snorkelling. Local ecological knowledge was investigated to gain complementary information. Both approaches highlighted significant proliferation of this tropical invader, with an average abundance of 0.36 individuals per 250m2 across the 0-30-m depth range. Dense aggregations of more than 100 adult individuals were observed in September 2015, and a coherent spatial structure at the small scale (
