- Marine Biology, Marine Ecology, Fisheries Biology, Ecology of Coastal Systems, Acoustic telemetry, Marine Conservation Planning, and 8 moreMarine Protected Areas, Coral Reefs, Fish Biology, Fisheries Management, Marine Reserves, Artificial Reefs, Age and growth, and Sparidae(Marine Protected Areas, Coral Reefs, Fish Biology, Fisheries Management, Marine Reserves, Artificial Reefs, Age and growth, and Sparidae)edit
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... Short communication. Site fidelity and movements of gilthead sea bream (Sparus aurata) in a coastal lagoon (Ria Formosa, Portugal). ... Keywords: Sparus aurata; acoustic telemetry; site fidelity; fish movement; Ria Formosa. Article... more
... Short communication. Site fidelity and movements of gilthead sea bream (Sparus aurata) in a coastal lagoon (Ria Formosa, Portugal). ... Keywords: Sparus aurata; acoustic telemetry; site fidelity; fish movement; Ria Formosa. Article Outline. ...
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-[Fishing for bivalves in the ocean coastline of the Southwest coast of the Iberian Peninsula: fishing grounds and equipment description, management measures, biology of the commercial species and bivalve species catalogue] by Gaspar, MB;... more
-[Fishing for bivalves in the ocean coastline of the Southwest coast of the Iberian Peninsula: fishing grounds and equipment description, management measures, biology of the commercial species and bivalve species catalogue] by Gaspar, MB; Moreno, O.; Díaz, A.; Manzano, C.(eds.); Pereira, A.; Palanco, I.; Rufino, M.(2007) in Spanish
The Mediterranean parrotfish Sparisoma cretense is one of the few temperate species of the Scaridae family and the only one to be found in Mediterranean waters (Bernardi et al., 2000). It is a common species in the Macaronesian... more
The Mediterranean parrotfish Sparisoma cretense is one of the few temperate species of the Scaridae family and the only one to be found in Mediterranean waters (Bernardi et al., 2000). It is a common species in the Macaronesian archipelagos (Azores, Madeira, Canaries and Cape Verde islands), north-west coast of Africa and in the southern and eastern coasts of the Mediterranean (Gonzalez, 1993; Bernardi et al., 2000). Although the Mediterranean parrotfish is common in the eastern and southern coasts of the ...
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Three hatchery produced and reared (HPR) and five wild white sea bream (Diplodus sargus) were double tagged with Vemco V8SC-2L acoustic transmitters and Floy Tag T-bar anchor tags, and released on artificial reefs located near a natural... more
Three hatchery produced and reared (HPR) and five wild white sea bream (Diplodus sargus) were double tagged with Vemco V8SC-2L acoustic transmitters and Floy Tag T-bar anchor tags, and released on artificial reefs located near a natural reef off the southern coast of Portugal. Passive telemetry was used to monitor movements of the white sea bream over a nine week
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Acoustic telemetry and standard tag-recapture were used to determine the home range and residency of juveniles and sub-adults of Diplodus sargus and Diplodus vulgaris in the Ria Formosa (Portugal) coastal lagoon. Maximum time between... more
Acoustic telemetry and standard tag-recapture were used to determine the home range and residency of juveniles and sub-adults of Diplodus sargus and Diplodus vulgaris in the Ria Formosa (Portugal) coastal lagoon. Maximum time between recaptures for the standard tag-recapture method was 128 days for D. sargus and 30 days for D. vulgaris. The majority of the fish were recaptured in the vicinity of the tagging location. Fish tagged with acoustic transmitters had a maximum period of time between first and last detections of 62 days for D. sargus and 260 days for D. vulgaris. Minimum convex polygons areas ranged between 148 024m2 and 525 930m2 for D. sargus and between 23 786m2 and 42 134m2 for D. vulgaris. Both species presented a high residency index between first and last detections. Two D. sargus tagged with acoustic tags were recaptured by fishermen outside the coastal lagoon at distances of 12km and 90km from the tagging position, providing evidence that this species leaves the Ria...
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Acoustic telemetry and standard tag-recapture were used to determine the home range and residency of juveniles and sub-adults of Diplodus sargus and Diplodus vulgaris in the Ria Formosa (Portugal) coastal lagoon. Maximum time between... more
Acoustic telemetry and standard tag-recapture were used to determine the home range and residency of juveniles and sub-adults of Diplodus sargus and Diplodus vulgaris in the Ria Formosa (Portugal) coastal lagoon. Maximum time between recaptures for the standard tag-recapture method was 128 days for D. sargus and 30 days for D. vulgaris. The majority of the fish were recaptured in the
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Studies that combine both the ecological responses of marine species and protection measures with movement patterns and habitat use are of major importance in order to better understand the performance of marine protected areas (MPA) and... more
Studies that combine both the ecological responses of marine species and protection measures with movement patterns and habitat use are of major importance in order to better understand the performance of marine protected areas (MPA) and how species respond to their implementation. However, few studies have assessed MPA performance by relating local individual movement patterns and the observed reserve effects. In this study, we combined acoustic telemetry with abundance estimates to study the early effects of a recently established small coastal MPA on the local populations of white seabream. The results show that even small, recently established coastal MPAs can increase the abundance and biomass of commercial fish species, provided that target species have small home ranges and exhibit high site fidelity.
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Several studies have reported the existence of ectoparasites in the stomach contents of Diplodus sargus. The cleaning behaviour has, however, never been previously observed for this species. In this short study, we report the first... more
Several studies have reported the existence of ectoparasites in the stomach contents of Diplodus sargus. The cleaning behaviour has, however, never been previously observed for this species. In this short study, we report the first observations of the cleaning behaviour of D. sargus. These observations were in two yachting marinas, located in the Portuguese western coast between the months of April and August. The cleaning behaviour was only observed towards two Mugilidae species, Chelon labrosus and Mugil cephalus.
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Marine protected areas (MPAs) are today’s most important tools for the spatial management and conservation of marine species. Yet, the true protection that they provide to individual fish is unknown, leading to uncertainty associated with... more
Marine protected areas (MPAs) are today’s most important tools for the spatial management and conservation of marine species. Yet, the true protection that they provide to individual fish is unknown, leading to uncertainty associated with MPA effectiveness. In this study, conducted in a recently established coastal MPA in Portugal, we combined the results of individual home range estimation and population distribution models for 3 species of commercial importance and contrasting life histories to infer (1) the size of suitable areas where they would be fully protected and (2) the vulnerability to fishing mortality of each species. Results show that the relationship between MPA size and effective protection is strongly modulated by both the species’ home range and the distribution of suitable habitat inside and outside the MPA. This approach provides a better insight into the true potential of MPAs in effectively protecting marine species, since it can reveal the size and location of the areas where protection is most effective and a clear, quantitative estimation of the vulnerability to fishing throughout an entire MPA.