Feeding habits of the albacore tuna Thunnus alalunga (Perciformes, Scombridae) from central Mediterranean Sea

  title={Feeding habits of the albacore tuna Thunnus alalunga (Perciformes, Scombridae) from central Mediterranean Sea},
  author={Pierpaolo Consoli and Teresa Romeo and Pietro Battaglia and Luca Castriota and Valentina Esposito and Franco Andaloro},
  journal={Marine Biology},
In order to assess feeding habits and trophic level of this species, we analysed the stomach content of 189 specimens collected monthly in the southern Tyrrhenian Sea (central Mediterranean Sea). The results showed that this species is a pelagic predator focusing on paralepidid fish and, more in detail, on two species such as Paralepis speciosa and Paralepis coregonoides. Among cephalopods, Heteroteuthis dispar was the most abundant prey item in the stomach contents, whereas among crustaceans… 
Cephalopod prey in the stomach contents of odontocete cetaceans stranded in the western Mediterranean Sea
The results indicated a possible partitioning of cephalopod resources among the sampled predators, and provide new information on the presence of some rare and poorly known cEPhalopods in the area.
Feeding ecology and consumption rates of yellowfin tuna Thunnus albacares (Bonnaterre, 1788) in the eastern Arabian Sea
Diet composition, predator-prey relationships and consumption rates of yellowfin tuna Thunnus albacares in the western Indian Exclusive Economic Zone (eastern Arabian Sea) were studied, indicating opportunistic feeding nature of this apex predator.
Cephalopods in the diet of young-of-the-year bluefin tuna (Thunnus thynnus L. 1758, Pisces: Scombridae) from the southern Tyrrhenian Sea (central Mediterranean Sea)
In general, young-of-the-year bluefin tunas are able to feed on a large spectrum of cephalopod prey in the study area, usually relying on juvenile specimens and epipelagic and mesopelagic shoaling species.
Feeding habits of the Atlantic bluefin tuna, Thunnus thynnus (L. 1758), in the central Mediterranean Sea (Strait of Messina)
The predation on the high-energetic food as mesopelagic and bathypelagic fishes during the pre-spawning and the spawning period may bring an energetic advantage in tuna metabolism and gonadal maturation.
Pelagic cephalopods of the central Mediterranean Sea determined by the analysis of the stomach content of large fish predators
The presence of cephalopod beaks in the stomach of predators represents a fundamental tool to assess the biodiversity and the ecological importance of these taxa in the marine ecosystem.
Feeding ecology of Mediterranean common dolphins: The importance of mesopelagic fish in the diet of an endangered subpopulation
The results indicate that common dolphins are mainly piscivorous, feeding mostly on mesopelagic prey, and the narrow continental shelf seems to facilitate the availability of Myctophids and other members of the mesopalagic assemblages to dolphins when the assemblage migrates to the surface at night.
Variability of albacore (Thunnus alalunga) diet in the Northeast Atlantic and Mediterranean Sea
This study aims to describe the variability of albacore (Thunnus alalunga) diet in the Northeast Atlantic and Mediterranean Sea and to identify possible relationships between this variability and the
Some aspects of the reproductive biology of albacore Thunnus alalunga from the western Mediterranean Sea
Histological analysis of the ovaries and the monthly variation of the gonadosomatic index for both sexes showed that spawning occurred from June to August, which is a much shorter period than the 7 months reported for T. alalunga in tropical oceanic waters.


Feeding ecology of little tunny Euthynnus alletteratus in the central Mediterranean Sea
Comparative analysis performed on prey abundance highlighted a trend of increasing predator size-classes among prey items, and Maurolicus muelleri was the most important prey for the largest specimens analysed.
Diets of Albacore,Thunnus alalunga, and Dolphins,Delphinus delphisandStenella coerulaeoalba, Caught in the Northeast AtlanticAlbacore Drift-net Fishery:A Progress Report
This pilot study examined a small number of samples collected during the IFREMER fishery department study of the ecological impact of the French tuna driftnet fishery in the Northeast Atlantic, paying particular attention to comparisons between the diets of dolphins and tunas, associated versus non-associated in the catches.
Feeding habits of albacore Thunnus alalunga in the transition region of the central North Pacific
Gonatopsis borealis, the main squid prey from May to June, almost disappeared from the stomachs of albacore from July to September, probably due to the northward migration of this squid to subarctic waters in summer.
A comparison to historical data during similar and dissimilar environmental conditions suggests that the scombrids are opportunistic predators, and that prey availability was partly a function of the oceanographic conditions.
Vertical and seasonal distribution of pelagic cephalopods in the Mediterranean Sea Preliminary Report
Although benthic and neritic cephalopoda of the Mediterranean Sea have been studied since Aristotle first observed Octopus behavior, the pelagic forms have received very little attention. The
Tuna food habits related to the micronekton distribution in French Polynesia
This result suggests that most tuna foraging on large prey aggregations present in the study area are quickly satiated and escape longline capture and sampling, and studies of tuna feeding behaviour based on longlining may be biased, particularly when large aggregations of prey are present such as in convergence zones.
Feeding habits and trophic levels of Mediterranean fish
Acrossspecies, TROPH values increased asymptotically with maximum reported body length and the within- andamong-species asymPTotic relationships betweenTROPH and body length are discussed within the framework of foraging behavior and preyselection theory.
The use and abuse of fish otoliths in studies of feeding habits of marine piscivores
The identification and counting of otoliths could provide a quantitative estimate of consumption of numbers of fish within different species, as well as assist in identification of prey species consumed by piscivores.