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  • 1
    Book
    Book
    Die Cephalopodenfauna der nördlichen Nordsee : Untersuchungen zum Tintenfisch-Beifang des FFS "Walther Herwig III" Reise Nr. 192 (1999)
    Kiel : Institut für Meeresforschung
    Details Availability
    Type of Medium: Book
    Pages: 57 Seiten , Illustrationen, Fotografien, Graphen, Karte
    Language: German
    Note: Eingeklebte Fotos
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  • 2
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    Fine-scale distribution of juvenile cephalopods in the Scotia Sea and adaptive allometry of the brachial crown (1995)
    Springer
    In:  Marine Biology, 124 (1). pp. 111-117.
    Details
    Publication Date: 2018-03-21
    Description: The pelagic nekton community was sampled with the RMT 25 opening/closing net and a neuston net at two stations in the Scotia Sea south of the Antarctic Polar Front in the open ocean (Station 1) and on the South Georgia northwestern slope (Station 2). Downward oblique tows were made with the RMT 25 through discrete 200 m layers to 1000 m in daylight and darkness. A total of 119 cephalopods representing nine species were removed from the samples, and mantle and arm lengths were measured to the nearest 0.1 mm. The most abundant species at each station was an undescribed Brachioteuthis sp. (B. ?picta). Galiteuthis glacialis and Alluroteuthis antarcticus were caught at both stations. Histioteuthis eltaninae, Bathyteuthis abyssicola and Psychroteuthis glacialis were caught at Station 1. Mastigoteuthis psychrophila and a Chiroteuthis sp. were caught at Station 2. B. ?picta was present throughout the water column to 1000 m at both stations, with little evidence of ontogenetic descent. There was evidence for ontogenetic descent in G. glacialis. This species was absent from the Antarctic Surface Water (ASW) at Station 1, where it was concentrated in the Circumpolar Deep Water (CDW). At Station 2 it was present throughout the water column to 1000 m. The other species were all caught in the core of the CDW (〉400 m). In juvenile B. ?picta, G. glacialis and A. antarcticus, growth of the brachial crown is positively allometric with respect to mantle length. Recent data on biomass spectra in high-latitude pelagic systems show that they are characterised by the presence of peaks of biomass separated by biomass minima. Positive allometric growth in the brachial crown of these antarctic oceanic squid is suggested to have evolved as an adaptation to the peaked, or domed, structure of the pelagic biomass spectrum which must be spanned by these predators as their optimum prey size increases with growth. Interspecific differences in the allometry of tentacle growth are probably related to differences in strategies for stalking and capture of prey.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/BF00349152
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    EUROSQUID CRUISE 1995: REPORT ; Cruise 208 of RV POSEIDON (POS208) west of Portugal and Spain, 1 - 22 June 1995 (1995)
    Institut für Meereskunde, Kiel
    In:  Institut für Meereskunde, Kiel, Kiel, Germany, 33 pp.
    Details
    Publication Date: 2015-02-23
    Type: Report , NonPeerReviewed
    Format: text
    DOI: 10.2312/cr_po208
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    OceanRep: Report - Cruise Report
  • 4
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    Stomach contents of a northern bottlenose whale (Hyperoodon ampullatus) stranded at Hiddensee, Baltic Sea (1998)
    Cambridge Univ. Press
    In:  Journal of The Marine Biological Association of The United Kingdom, 78 . pp. 643-650.
    Details
    Publication Date: 2021-04-22
    Description: The stomach of a female northern bottlenose whale, Hyperoodon ampullatus (Odontoceti: Ziphiidae) stranded at Hiddensee Island, western Baltic Sea, on 23 August 1993 contained 7465 cephalopod beaks (4934 upper and 2531 lower). The lower beaks were identified, their rostrallengths were measured and used to estimate size and mass of the cephalopods consumed by the whale. Alllower beaks belonged to one species, the boreoatlantic gonate squid Gonatus fabricii (Cephalopoda: Teuthoidea) indicating a mean squid mantle length of 21·9 cm and a mean squid wet mass of 220·7 g. The total squid biomass in the whale's stomach represented by the lower beaks was 598·6 kg. Assuming that all upper beaks belong to G. fabricii, the squid biomass taken by the whale was estimated to be 1089 kg. Besides the beaks partly digested squid gladii, spermatophores and 15 specimens of the fish parasite Sphyrion lumpi (Crustacea: Copepoda) occurred in the stomach. No fish remains were found.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1017/S0025315400041679
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
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    Stomach contents from sperm whales stranded at Denmark (1998)
    In:  European Research on Cetaceans, 11 . pp. 138-141.
    Details
    Publication Date: 2021-04-22
    Type: Article , NonPeerReviewed
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    OceanRep: Article in a Scientific Journal - without review
  • 6
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    Modern target sampling techniques provide new insights into the biology of early life stages of pelagic cephalopods (1998)
    SIBM
    In:  Biologia Marina Mediterranea, 5 (1). pp. 260-272.
    Details
    Publication Date: 2021-06-22
    Description: Adults of pelagic cephalopods actively avoid sampling gem: Hence, collections of early life stages have gained a greater importance and have led to meaningful conclusions in various aspects of cephalopod fishery biology. Recent zooplankton/micronekton collections taken with state-of-the-art sampling gear in the North East Atlantic Ocean, the Arabian Sea and the Southem Ocean have revealed important new information an early juvenile cephalopods. Some of the results reviewed in the present contribution demonstrate the suitability of such gears to study key aspects of early life biology of cephalopods such as fine- and meso-scale distribution and even morphological adaptations to the abundance of prey.
    Type: Article , PeerReviewed
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
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    Predation on cephalopods by Antarctic fur seals, Arctocephalus gazellae, at two localities of the Scotia Arc, Antarctica (1999)
    Springer
    In:  Polar Biology, 21 . pp. 59-63.
    Details
    Publication Date: 2021-06-16
    Description: The cephalopod remains from 206 Antarctic fur seal (Arctocephalus gazella) scats collected at Mossman Peninsula, South Orkney Islands (n = 105) and at Stranger Point, South Shetland Islands (n = 101) contained 148 beaks (57 lower and 91 upper). The lower beaks were sorted and measured. Identification of 33 of the lower beaks that were collected at Mossman Peninsula revealed two squid species, Brachioteuthis ?picta (n = 26) and Psychroteuthisglacialis (n = 7), with lower rostral lengths (LRL) of 2.0–3.5 mm, and 1.0–2.5 mm, respectively. Identification of 15 of the lower beaks collected at Stranger Point revealed the same squid species, with the LRL of B. ?picta ranging from 3.0–3.4 mm (n = 9), and that of P. glacialis from 2.0 to 3.5 mm (n = 6). Estimated squid sizes and wet masses indicate that Antarctic fur seals feed on the small sub-adult squid which inhabit the surface layers. We have compared the squid diet estimated for the seals with that reported for its congeners in lower latitudes and other Antarctic seals, and conclude that cephalopods do not form an important food resource for Antarctic fur seals.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/s003000050333
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
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    On the biology of the European flying squid Todarodes sagittatus (Lamarck, 1798) (Cephalopoda: Ommastrephidae) in the central eastern Atlantic (1998)
    Taylor & Francis
    In:  South African Journal of Marine Science, 20 . pp. 375-383.
    Details
    Publication Date: 2021-06-11
    Description: A total of 206 specimens of the ommastrephid squid Todarodes sagittatus, obtained from three areas of the central eastern Atlantic (Canary Islands/African coast, Madeira, and the Gettysburg Bank area south of Portugal) were examined. New information on size, mass, length-mass relationships, reproductive biology, and diet of the squid from a hitherto not very well studied area is supplied. Females dominated the samples (78%) and attained larger size and mass than males. Dorsal mantle lengths of T. sagittatus in the Canary Islands/African coast samples and in the Madeira region were similar, 167 – 348 mm for females and 175 – 269 mm for males. From the Gettysburg Bank all specimens were immature, females ranging between 71 and 276 mm and males from 98 to 233 mm. Mature females were found mainly during winter and mature males nearly year-round, indicating that they mature earlier than females and at a smaller size. Prey consisted mainly offish (54.9%), decapods (18.8%) and cephalopods (12.1%). Otoliths and fish bones identified from stomach contents suggest that myctophids were the most common and diverse prey.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.2989/025776198784126485
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 9
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    Kalmare der Polarmeere (1995)
    Gustav Fischer Verlag
    In:  In: Biologie der Polarmeere: Erlebnisse und Ergebnisse. , ed. by Hempel, I. and Hempel, G. Gustav Fischer Verlag, Jena, pp. 216-221. ISBN 3-334-60950-2
    Details
    Publication Date: 2016-10-17
    Type: Book chapter , NonPeerReviewed
    Format: text
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    OceanRep: Book chapter
  • 10
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    Cephalopod ecology (1998)
    Alfred-Wegener-Institut für Polar- und Meeresforschung
    In:  In: The expedition ANTARKTIS XIV/2 of RV "Polarstern" in 1996/97 : [cruise leg ANT XIV/2 (Punta Quilla - Punta Arenas), November 12, 1996 to January 1, 1997]. Berichte zur Polarforschung, 274 . Alfred-Wegener-Institut für Polar- und Meeresforschung, Bremerhaven, Germany, pp. 41-47.
    Details
    Publication Date: 2017-09-18
    Type: Book chapter , NonPeerReviewed
    Format: text
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