Feeding habits of oplophorid shrimps in the deep western Mediterranean

1993 ◽  
Vol 73 (1) ◽  
pp. 193-206 ◽  
Author(s):  
J. E. Cartes
Keyword(s):  
Deep Sea ◽  
Feeding Habits ◽  
Western Mediterranean ◽  
Bottom Trawl ◽  
Dietary Overlap ◽  
Benthic Species ◽  
Predatory Activity ◽  
Fish Remains ◽  
Meganyctiphanes Norvegica ◽  
Lower Slope

Diets of the two deep-sea species of Mediterranean oplophorids were studied by the analysis of 244 foregut contents of Acanthephyra eximia and 69 of Acanthephyra pelagica. All the specimens were collected on the deep slope (between 610 and 2261 m) using an OTSB-14 bottom trawl.The diet of A. pelagica consisted of small mesopelagic fishes (Cyclothone braueri, Myctophidae) and bathypelagic crustaceans (Gennadas elegans, Pasiphaea multidentata, Eucopia hanseni, Meganyctiphanes norvegica, hyperiids). In contrast, A. eximia was an important scavenger, feeding on fish remains. Benthic species (polychaetes, Calocaris macandreae, gastropods, etc.) were also detected in its diet. There was little dietary overlap between the two species. In A. eximia bathypelagic decapods were important only in the diet of large specimens. In small specimens the acquisition of decapod prey was not attributable to active hunting. On the lower slope A. eximia was more detritivorous, and predatory activity was lower. This trend was most distinct in small and medium-sized individuals, which predominate at that level.

New Records of the Deep Sea Crab Chaceojvmediterraneus Manning & Holthuis, 1989, in the Western Mediterranean (Decapoda, Brachyura, Geryonidae)

Crustaceana ◽  
1993 ◽  
Vol 64 (2) ◽  
pp. 221-225 ◽  
Author(s):  
J.E. Cartes
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
New Records ◽  
First Record ◽  
Western Mediterranean ◽  
Bottom Trawl ◽  
Western Basin ◽  
Brachyuran Crab ◽  
The Third ◽  
Lower Slope

AbstractTwo ovigerous females of the brachyuran crab Chaceon mediterraneus Manning & Holthuis, 1989, were captured at two different bottom trawl stations on the lower slope in the Catalan Sea. This is the third record of this species from the Mediterranean Sea, where it seems to be endemic, and the first record from Iberian waters. Chaceon mediterraneus was cited previously only at two locations in the Western Basin. Both specimens presented certain abnormalities in the anterolateral spines of the carapace.

Trophic relationships between two gurnards Trigla lucerna and Aspitrigla obscura from the western Mediterranean

1997 ◽  
Vol 77 (2) ◽  
pp. 527-537 ◽  
Author(s):  
M.S. Morte ◽  
M.J. Redon ◽  
A. Sanz-Brau
Keyword(s):  
Species Composition ◽  
Diet Composition ◽  
Annual Variation ◽  
Feeding Habits ◽  
Western Mediterranean ◽  
Trophic Relationships ◽  
Frequency Of Occurrence ◽  
Dietary Overlap ◽  
Feeding Types ◽  
Food Items

The feeding habits of Trigla lucerna L. (1758) and Aspitrigla obscura L. (1764) (Pisces: Triglidae), off the coast of the Gulf of Valencia (Spain), were investigated between October 1989 and January 1991. The two species examined in this study appear to have distinct feeding types, based on the species composition of prey and the frequency of occurrence of major food items. Tub gurnard had a more diverse diet and fed mainly on crustaceans (mysids and decapods), teleosts and molluscs, whilst long fin gurnard were less piscivorous and fed mainly on mysids and natantids. No significant differences were found in the annual variation of vacuity coefficient for either species. Diet composition in these species did not show great changes with either season and size of fish. There was little dietary overlap between these two species.

Morphological features and ecological aspects of early juvenile specimens of the aristeid shrimp Aristeus antennatus (Risso, 1816)

1997 ◽  
Vol 48 (1) ◽  
pp. 73 ◽  
Author(s):  
F. Sardà ◽  
J. E. Cartes
Keyword(s):  
Deep Sea ◽  
Carapace Length ◽  
Western Mediterranean ◽  
Biological Cycle ◽  
Early Juvenile ◽  
Ecological Aspects ◽  
First Time ◽  
Lower Slope ◽  
Sediment Interface ◽  
Aristeus Antennatus

The present study describes some aspects of the morphology and ecology of early juveniles (<16 mm carapace length, or CL) of the aristeid deep-sea shrimp Aristeus antennatus (Risso, 1816) in the Catalan Sea (western Mediterranean). Early juveniles of this species were captured for the first time near the bottom at soundings between 335 and 1286 m. The appendages (pereiopods, telson, uropodal exopodite) were proportionally longer in these juveniles than in adults. Development of the petasma in males is described and is found to be complete at a minimum juvenile size of 19 mm CL. Thus, size at first reproduction could be from 21 mm CL. Diet of the early juveniles was based mainly on suprabenthic prey and dominated by peracarid crustaceans inhabiting the water–sediment interface. Recruitment of early juveniles occurs in winter mainly on the lower slope (1100–1286 depth). The biological cycle of A. antennatus in relation to the ecology of its deep-sea habitat is discussed.

scholarly journals Millennial-Scale Response of a Western Mediterranean River to Late Quaternary Climate Changes: A View from the Deep Sea

2014 ◽  
Vol 122 (6) ◽  
pp. 687-703 ◽  
Author(s):  
Lucile Bonneau ◽  
Stéphan J. Jorry ◽  
Samuel Toucanne ◽  
Ricardo Silva Jacinto ◽  
Laurent Emmanuel
Keyword(s):  
Deep Sea ◽  
Climate Changes ◽  
Late Quaternary ◽  
Western Mediterranean ◽  
Mediterranean River ◽  
Quaternary Climate ◽  
Scale Response ◽  
Quaternary Climate Changes ◽  
Millennial Scale

Feeding Habits of Alepocephalus Rostratus (Pisces: Alepocephalidae) in the Western Mediterranean Sea

1998 ◽  
Vol 78 (4) ◽  
pp. 1295-1306 ◽  
Author(s):  
M. Carrassón ◽  
J. Matallanas
Keyword(s):  
Mediterranean Sea ◽  
Prey Item ◽  
Narrow Range ◽  
Feeding Habits ◽  
Western Mediterranean ◽  
Western Mediterranean Sea ◽  
The Family ◽  
Different Seasons ◽  
Scarcity Of Resources ◽  
Important Fish

The present study examines the feeding habits of Alepocephalus rostratus, the only species of the family Alepocephalidae in the Mediterranean Sea and the second most important fish species, in terms of biomass, inhabiting the deep slope of the Catalan Sea. Samples were obtained at depths between 1000–2250 m. Diet was analysed for two different size-classes (immature and mature specimens) at three different bathymetric strata during two different seasons. The feeding habits of A. rostratus included a narrow range of mobile macroplanktonic organisms (e.g. Pyrosoma atlanticum and Chelophyes appendiculata) and some material of benthic origin. Pyrosoma atlanticum was the preferred prey item in spring at 1000–1425 m, being very scarce in summer at the same depth as a consequence of its scarcity in the environment during this season. There were some ontogenic differences in the diet of A. rostratus at 1425–2250 m. Adults ingested more and larger prey than juvenile specimens. The scarcity of resources below 1200–1400 m fostered a more diversified diet, as well as passive predation of sedimented material.

A new species of Dahmsopottekina (Copepoda: Harpacticoida: Huntemanniidae) from the western Mediterranean deep sea

2011 ◽  
Vol 92 (5) ◽  
pp. 1043-1055 ◽  
Author(s):  
Katerina Sevastou ◽  
Paulo Henrique Costa Corgosinho ◽  
Pedro Martínez Arbizu
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Sediment Traps ◽  
Morphological Characters ◽  
Western Mediterranean ◽  
Sexually Dimorphic ◽  
Depth Range ◽  
Mode Of Life ◽  
Study Support ◽  
A New Species

A new species of the genus Dahmsopottekina is described from the Mediterranean Sea. Dahmsopottekina guilvardi sp. nov. was collected from abyssal habitats at a depth range of 2340–2850 m. Like its congeners, the new species has a vermiform habitus, a highly transformed P1 in both sexes and a plough-like rostrum in the female. Dahmsopottekina guilvardi sp. nov. can be distinguished from its congeneric species by the combination of a fused basis and endopodite in P1 of both sexes and the absence of an endopodite in P2–P4 of the female. Dahmsopottekina guilvardi sp. nov. is the second record of a harpacticoid species after its congener D. peruana in which the basis and endopodite of a leg other than the P5, namely the P1, are fused. Furthermore, the new species is the only one among Dahmsopottekina species with a 1-segmented P1 exopodite in the male. Similar to its congeners, D. guilvardi sp. nov. is strongly sexually dimorphic. This is evident through the morphology of most of the cephalic appendages and the reduction of P2–P6 in the female. The results of the present study support the observation that Dahmsopottekina species are sparsely distributed and highly endemic. Nevertheless, our results do not agree with the statement of considerably larger females as the length variability between females is greater than between the two sexes. Despite the morphological characters of the species commensurate with a burrowing mode of life, its presence in sediment traps suggests that D. guilvardi sp. nov. is an active ‘swimmer’.

Detailed comparative morphology of the peri-oral structures of the Mysidacea and Euphausiacea (Crustacea): an indication for the food preference

2001 ◽  
Vol 81 (2) ◽  
pp. 235-241 ◽  
Author(s):  
L. De Jong-Moreau ◽  
B. Casanova ◽  
J.-P. Casanova
Keyword(s):  
Food Preference ◽  
Feeding Habits ◽  
Comparative Morphology ◽  
Gut Content ◽  
Scanning Microscope ◽  
Content Analyses ◽  
Carnivorous Species ◽  
Meganyctiphanes Norvegica ◽  
Molar Process

Scanning microscope investigations were carried out on mandibles, labrum and paragnaths of several species of Mysidacea and Euphausiacea. Gut content analyses were in agreement with morphological observations. It appears that the morphology of the peri-oral structures and especially of the mandibles reflect the feeding habits, and that the well known relationships between the size of the molar process and the incisor one, i.e. a large molar process is associated with herbivorous feeding, is not always verified. Bacescomysis abyssalis and Bentheuphausia amblyops are believed to be mostly saprophagous, Boreomysis inermis and Meganyctiphanes norvegica are mostly phytophagous, Hemimysis speluncola is omnivorous, while Siriella armata and Thysanopoda orientalis are carnivorous species.

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