Temporal trends of littoral fishes at deep Posidonia oceanica seagrass meadows in a temperate coastal zone

Deudero, Salud; Morey, Gabriel; Frau, A.; Moranta, Joan; Moreno, I.

doi:10.1016/j.jmarsys.2007.05.001

Cited by 47 publications

(43 citation statements)

References 30 publications

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“…Therefore, this species does not have the same habitat preferences as S. scriba, which predominantly inhabits seagrass meadows (Moranta et al 2006, Deudero et al 2008, March et al 2010. In the present study, S. cabrilla was found to inhabit soft bottoms with rocks and detrital habitats more frequently.…”

Section: Discussioncontrasting

confidence: 64%

Spatial and temporal patterns in Serranus cabrilla habitat use in the NW Mediterranean revealed by acoustic telemetry

Alós

March²,

Palmer³

et al. 2011

Mar. Ecol. Prog. Ser.

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We used acoustic telemetry to describe the spatial and temporal patterns of habitat use of one of the species most targeted by recreational anglers in the NW Mediterranean, Serranus cabrilla (Linnaeus, 1758). Temporal patterns and fish position were determined using a fixed-receiver array located in a marine protected area (MPA) in Palma Bay (Balearic Islands). Fish position as centre of activity (COA, the centre of the area the fish uses during a specific time) and space utilisation preferences could be described due to a receiver array design with a high range detection overlap (more densely distributed near the COA). There were significantly more detections per time unit during the day, which was interpreted as increased activity possibly related to feeding habits and social behaviour. S. cabrilla spent 95% of its time in an average area of 0.77 ± 0.17 km 2 , with a core area (50% of the time) of 0.10 ± 0.29 km 2 . The home range size was not related to fish size or diel pattern (i.e. the size of the daytime home range was not significantly different from the night range). The linearity index and the index of reuse (proxies of site fidelity) also demonstrated that this species has high site fidelity, which suggests that it is sedentary with a limited adult dispersal capacity. Two main habitats were observed in the study area, and S. cabrilla spent on average much less time in seagrass meadows (Posidonia oceanica beds) compared to soft, gravel and detritus bottoms. A relatively small MPA would be a useful management tool for establishing sustainable exploitation levels of this species.KEY WORDS: Spatial-temporal patterns · Marine protected area · MPA · Recreational fishing · Simultaneous hermaphroditism · Acoustic telemetry · Serranus cabrilla Resale or republication not permitted without written consent of the publisher

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Section: Discussioncontrasting

confidence: 64%

Spatial and temporal patterns in Serranus cabrilla habitat use in the NW Mediterranean revealed by acoustic telemetry

Alós

March²,

Palmer³

et al. 2011

Mar. Ecol. Prog. Ser.

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“…The majority of the studies dealing with temporal variations of fi sh fauna focus on annual-, seasonal-, and monthly variations (Guidetti et al 2002, Moranta et al 2006, Deudero et al 2008, Condal et al 2012, Koeck et al 2014. At a fi ner temporal scale, diurnal-nocturnal shifts have been investigated in fi sh assemblages (Nagelkerken et al 2000, Santos et al 2002, Carpentieri et al 2005, Harvey et al 2012) and in single species (D'Anna et al 2011, Koeck et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

Witkowski¹,

Vion²,

Bouchoucha³

2016

Acta Ichthyol. Piscat.

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Background. There is need for more information on behavioural rhythms of fi shes in relation to their habitat use in few or not previously monitored areas, such as coralligenous habitats. Some studies have compiled inventories of observable fi sh species in this habitat, but no studies have been performed on the temporal patterning of fi sh behaviour, especially at the scale of the day. The presently reported study aims at providing knowledge on fi nescale fl uctuations of abundances and behaviour of two fi sh species in coralligenous habitats throughout the diurnal period. Materials and methods. Fish fauna was fi lmed hourly, for several days, from dusk to dawn, with autonomous, programmable, and rotating video systems. Diurnal variations in abundances per count, considering size classes and behaviour, were studied for two diurnal fi sh species-the Mediterranean rainbow wrasse, Coris julis (Linnaeus, 1758) (Labridae), and the common two-banded seabream, Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817) (Sparidae) in two study areas of coralligenous habitats on the French Riviera.Results. Signifi cant temporal variability at the scale of the hour was revealed for abundances of C. julis in one of the two study areas, with few individuals in crepuscular periods and highest abundances in the morning and in the afternoon. These differences were mainly due to signifi cant diurnal variations in abundances of small and medium C. julis, which were low in crepuscular periods, whereas large-sized individuals were equally abundant during the day. On the other hand, no discernible diurnal rhythmicity of mean abundances of D. vulgaris was observed, regardless of the study area. Crepuscular periods were associated with sudden changes of abundances and behaviour for both species, with a greater percentage of mobile and solitary individuals, and few feeding individuals compared to the rest of the day. Feeding occurred mainly in the morning for C. julis. In contrast, no dial-time preference for feeding was revealed for D. vulgaris. Conclusions. The study provided preliminary insights into fi ne-scale diurnal variations of abundances of different life stages and of fi sh behaviour. Variability in abundances of life stages and of fi sh behaviours at different times of day should be taken into account for population assessments and spatial comparisons. Moreover, our study confi rmed the use of video-imaging as an effi cient non-destructive tool for the study of fi sh fauna in structurally complex, highly valuable habitats.

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“…The goal of this work was to compare methods to sample seagrass-specific species in temperate areas. The most important fish groups in P. oceanica, in terms of biomass are Sparidae, Serranidae and Labridae (Deudero et al, 2008). The Ecocean captured pre-settlers of the group Sparidae, most likely identified as the species D. annularis according to meristics and the time of the year (Félix-Hackradt et al, 2013b).…”

Section: Discussionmentioning

confidence: 99%

“…Rooker et al, 1998) to experimental beam trawls (e.g. Deudero et al, 2008). Although scuba-based visual censuses have provided invaluable information with a high degree of spatial resolution, the spotting/collection of samples using divers may be inefficient as regards the detection of early settlers in seagrass meadows with high canopies or when large areas must be sampled (Franco et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…beach seines, lift nets, epibenthic light sleds) tends to lack spatial resolution at greater depths and is not useful when sampling large distances and collecting large sample sizes. Experimental light beam trawls have been used to analyse coastal demersal assemblages over Posidonia oceanica meadows but, in general, do not capture the smallest size fractions that have just settled in benthic habitats (Deudero et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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An evaluation of sampling methodology for assessing settlement of temperate fish in seagrass meadows

Catalán¹,

Dunand²,

Álvarez³

et al. 2014

Medit. Mar. Sci.

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All demersal fish with planktonic larvae settle at some point early in life, generally around the transformation from larvae to juveniles or soon after. Sampling pre-settlement or very young, settled fish is challenging due to spatial concretions within the habitat and the pulsed, rapid nature of the settlement process. There is a lack of robust methods that enable this sampling, but information on the settlement, that represents a mortality bottleneck, is crucial for the follow-up of populations for fisheries and conservation purposes. An empirical evaluation of sampling methods has not been conducted in temperate habitats. Here, we compare six different sampling methods to collect pre- and post-settlement stages of fish to determine the best combination of techniques to utilise in Posidonia oceanica, an endemic Mediterranean seagrass that provides a key nursery habitat for coastal fish. We considered three types of pelagic nets (bongo net, neuston net and ring net), two types of light-traps (Quatrefoil and Ecocean CARE®) to sample pre-settled stages and a low-impact epibenthic trawl for recent settlers. Our results show a significantly different size-spectrum for each method, with a continuous range of sizes from 2 mm to 200 mm. The smallest sizes were collected by the bongo net, followed by the ring net, the neuston net, the Quatrefoil, the Ecocean and finally the epibenthic trawl. Our results suggest that an appropriate strategy for collecting and estimating the abundance of key littoral fish species around settlement size is the combination of the Ecocean light trap and the epibenthic trawl.

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Temporal trends of littoral fishes at deep Posidonia oceanica seagrass meadows in a temperate coastal zone

Cited by 47 publications

References 30 publications

Spatial and temporal patterns in Serranus cabrilla habitat use in the NW Mediterranean revealed by acoustic telemetry

Spatial and temporal patterns in Serranus cabrilla habitat use in the NW Mediterranean revealed by acoustic telemetry

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

An evaluation of sampling methodology for assessing settlement of temperate fish in seagrass meadows

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