title: Dispersal patterns of coastal fish: implications for designing networks of marine protected areas.
abstract: Information about dispersal scales of fish at various life history stages is critical for successful design of networks of marine protected areas, but is lacking for most species and regions. Otolith chemistry provides an opportunity to investigate dispersal patterns at a number of life history stages. Our aim was to assess patterns of larval and post-settlement (i.e. between settlement and recruitment) dispersal at two different spatial scales in a Mediterranean coastal fish (i.e. white sea bream, Diplodus sargus sargus) using otolith chemistry. At a large spatial scale (∼200 km) we investigated natal origin of fish and at a smaller scale (∼30 km) we assessed "site fidelity" (i.e. post-settlement dispersal until recruitment). Larvae dispersed from three spawning areas, and a single spawning area supplied post-settlers (proxy of larval supply) to sites spread from 100 to 200 km of coastline. Post-settlement dispersal occurred within the scale examined of ∼30 km, although about a third of post-settlers were recruits in the same sites where they settled. Connectivity was recorded both from a MPA to unprotected areas and vice versa. The approach adopted in the present study provides some of the first quantitative evidence of dispersal at both larval and post-settlement stages of a key species in Mediterranean rocky reefs. Similar data taken from a number of species are needed to effectively design both single marine protected areas and networks of marine protected areas.
authors.affiliation: Laboratory of Conservation and Management of Marine and Coastal Resources, Dipartimento Di Scienze Etecnologie Biologiche E Ambientali (DiSTeBA), University of Salento, Lecce, Italy. difry@libero.it
authors.forename: Antonio
authors.initials: A
authors.lastname: Di Franco
authors.forename: Bronwyn M
authors.initials: BM
authors.lastname: Gillanders
authors.forename: Giuseppe
authors.initials: G
authors.lastname: De Benedetto
authors.forename: Antonio
authors.initials: A
authors.lastname: Pennetta
authors.forename: Giulio A
authors.initials: GA
authors.lastname: De Leo
authors.forename: Paolo
authors.initials: P
authors.lastname: Guidetti
mesh_terms: D000818:Animals; D003247:Conservation of Natural Resources; D017753:Ecosystem; D005398:Fisheries; D005399:Fishes / Q000145:classification / Q000254:growth & development*; D007814:Larva / Q000254:growth & development*; D008386:Marine Biology; D010802:Phylogeny; D011157:Population Dynamics; D021541:Sea Bream / Q000502:physiology*