Residency patterns and site fidelity of Grampus griseus (Cuvier, 1812) in the Gulf of Taranto (Northern Ionian Sea, Central-Eastern Mediterranean Sea)

Carlucci, Roberto; Bas, Aylin Akkaya; Liebig, Peggy; Renò, Vito; Santacesaria, Francesca Cornelia; Bellomo, Stefano; Fanizza, Carmelo; Maglietta, Rosalia; Cipriano, Giulia

doi:10.1007/s13364-020-00485-z

Cited by 32 publications

(19 citation statements)

References 36 publications

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“…Therefore, as reported for P. macrocephalus and G. griseus in the North Western Mediterranean Sea (Praca and Gannier 2008), their coexistence in the Gulf of Taranto seems to be enhanced by the cephalopod diversity distributed along the depth gradient (Capezzuto et al 2010;Carlucci et al 2018a). In addition, whilst the Risso's dolphin seems to be resident in the study area (Carlucci et al 2018d(Carlucci et al , 2020Maglietta et al 2018), the sperm whale has been proved to be characterized by a migration pattern in the Mediterranean Sea (Frantzis et al 2011). A partial niche overlap was observed between S. coeruleoalba with P. macrocephalus and G. griseus.…”

Section: Role and Impacts Of Cetaceans In The Got Food Webmentioning

confidence: 96%

“…In particular, the striped and common bottlenose dolphins are the most frequent and abundant species distributed throughout the Gulf of Taranto (Carlucci et al 2016(Carlucci et al , 2018b. The Risso's dolphin is distributed in the range depth between 400-1000 m (Carlucci et al 2020), whilst the sperm whale has been observed between 550-1200 m usually in summer and autumn (Bellomo et al 2019). Lastly, the fin whale occurs with few individuals on the continental slope waters (Dimatteo et al 2011;Fanizza et al 2014).…”

Section: Study Areamentioning

confidence: 99%

“…The biomass estimates of the 4 investigated odontocetes were derived from data collected during monitoring surveys carried out in the Gulf of Taranto since 2009 (eg. Carlucci et al 2018cCarlucci et al , 2020Maglietta et al 2018). The mesomicrozooplankton productivity and consumption were estimated by averaging the results obtained for the area of study from the OPATM-BFM Mediterranean biogeochemical model (Lazzari et al 2012).…”

Section: Model Parametrization: Initial Conditions and Time Seriesmentioning

confidence: 99%

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Assessment of cetacean–fishery interactions in the marine food web of the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea)

Carlucci

Capezzuto

Cipriano

et al. 2020

Rev Fish Biol Fisheries

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The exploitation of fishery resources acts as a driving force on cetaceans both directly, by determining their fishing mortality or injury as by-catch species, and indirectly, through the lowering the availability of their prey. This competitive overlap between fishing and cetaceans often results in inadequate solutions so that in some cases there have been cases of intentional cetacean culling to maximize fishing production. A modelling approach applied to investigate the ecological roles of cetaceans in the food web could prove more effective to integrate ecological and fishing aspects and to provide suggestions for management. The comparative analysis carried out in the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea) showed that fishing exploitation provides impacts on the investigated food web greater than those due to cetacean predation. Trawling was estimated to be the most negatively impacting fishing gear considering the mortality rates and consumption flows. On the other hand, the striped dolphin was the main impact on the food web due to its highest consumption flows. Analysis showed a negative and non-selective impact on the exploited species due to the fishing gears, while the odontocetes proved to select their prey species and provide a positive impact in the assemblage. In particular, while the fishing gears are primarily size selective, targeting mostly large and economically valuable fish, the odontocetes seem to follow a co-evolution process with their prey, developing a specialization in their resources, providing control of the meso-consumers and ensuring a trophic stability in the ecosystem.

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Section: Role and Impacts Of Cetaceans In The Got Food Webmentioning

confidence: 96%

Section: Study Areamentioning

confidence: 99%

Section: Model Parametrization: Initial Conditions and Time Seriesmentioning

confidence: 99%

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Assessment of cetacean–fishery interactions in the marine food web of the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea)

Carlucci

Capezzuto

Cipriano

et al. 2020

Rev Fish Biol Fisheries

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“…The intra-annual and inter-annual photo-identification matches suggest a degree of seasonal site fidelity of the individuals to this area. Strong site fidelity of Risso's dolphin has been reported in the Ligurian Sea (Airoldi et al, 2000) and the Gulf of Taranto (Carlucci et al, 2020). Moreover, photo-identification data showed re-sightings of individuals associated in the same group over the years; this is the typical behaviour of the species, which often forms long-term bonds (Evans, 1987;Hartman et al, 2008).…”

Section: Discussionmentioning

confidence: 79%

Sightings of risso’s dolphin (grampus griseus) off the Southern coast of Linosa island (South-Central Mediterranean Sea)

Corrias¹,

Filiciotto²,

Giardina³

2021

Medit. Mar. Sci.

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Risso’s dolphin distribution, habitat preferences, and site fidelity in the Strait of Sicily are very little known. During three summer seasons of sea surveys, we sighted this species offshore Linosa island in groups of variable numbers of individuals (2-20 with an average of 9.7 ± 7.0 SD). Sightings were located in a small area showing medium depth (average 591 m) and bathymetric features that usually correspond with known habitat preferences of the species. A total of 32 individuals belonging to 4 age classes were photo-identified and 8 of them were re-sighted once over years. This work illustrates for the first time, the presence of the species in the studied area and the results seem to indicate a site fidelity over years.

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“…Both the complex bottom topography and the mix of environmental conditions make this area suitable for the presence of thriving cetacean populations [46,47]. In particular, the common bottlenose dolphin Tursiops truncatus usually occurs within the continental shelf [46][47][48], while the striped dolphin (Stenella coeruleoalba), the short-beaked common dolphin (Delphinus delphis), Risso's dolphin (Grampus griseus), the Cuvier's beaked whale (Ziphius cavirostris), the sperm whale (Physeter macrocephalus) and the fin whale (Balaenoptera physalus) are mainly distributed in offshore waters on the continental slope [46][47][48][49][50][51][52][53][54][55][56][57]. Most of these species act as top-down controls on the entire food web [35], activating trophic cascades up to the middle trophic levels [36].…”

Section: Study Areamentioning

confidence: 99%

Addressing Cetacean–Fishery Interactions to Inform a Deep-Sea Ecosystem-Based Management in the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea)

Ricci

Manea

Cipriano

et al. 2021

JMSE

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Understanding of cetaceans’ trophic role and the quantification of their impacts on the food web is a critical task, especially when data on their prey are linked to deep-sea ecosystems, which are often exposed to excessive exploitation of fishery resources due to poor management. This aspect represents one of the major issues in marine resource management, and trade-offs are needed to simultaneously support the conservation of cetaceans and their irreplaceable ecological role, together with sustainable fishing yield. In that regard, food web models can represent useful tools to support decision-making processes according to an ecosystem-based management (EBM) approach. This study provides a focus on the feeding activity occurrence and the trophic interactions between odontocetes and the fishery in the marine food web of the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea), by zooming in on cetaceans’ prey of commercial interest. In particular, the quantification of trophic impacts is estimated using a food web mass-balance model that integrates information on the bathymetric displacement of both cetaceans’ prey and fishing activity. The results are discussed from a management perspective to guide future research and knowledge enhancement activities as well as support the implementation of an EBM approach.

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Residency patterns and site fidelity of Grampus griseus (Cuvier, 1812) in the Gulf of Taranto (Northern Ionian Sea, Central-Eastern Mediterranean Sea)

Cited by 32 publications

References 36 publications

Assessment of cetacean–fishery interactions in the marine food web of the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea)

Assessment of cetacean–fishery interactions in the marine food web of the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea)

Sightings of risso’s dolphin (grampus griseus) off the Southern coast of Linosa island (South-Central Mediterranean Sea)

Addressing Cetacean–Fishery Interactions to Inform a Deep-Sea Ecosystem-Based Management in the Gulf of Taranto (Northern Ionian Sea, Central Mediterranean Sea)

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