GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Phonotaxis of male crickets (Gryllus campestris) in a field population as an indication of territorially (Orthoptera: Gryllidae) (1991)
    Springer
    Journal of insect behavior 4 (1991), S. 675-681 
    Details
    ISSN: 1572-8889
    Keywords: male field crickets ; phonotaxis ; territoriality ; population density ; Gryllus campestris ; field study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01048078
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Natural habitat of coelacanths (1990)
    [s.l.] : Nature Publishing Group
    Nature 346 (1990), S. 323-324 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Fifty years after the discovery of living coelacanths, these ancient fish are threatened with extinction within two decades1. Can this famous fish be protected and saved? Almost all (98.6 per cent) of coelacanths have been caught along the west coast of Grande Comore, Western Indian Ocean ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/346323a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    CoelacanthLatimeria chalumnae aggregates in caves: first observations on their resting habitat and social behavior (1991)
    Springer
    Environmental biology of fishes 30 (1991), S. 281-286 
    Details
    ISSN: 1573-5133
    Keywords: Living fossil ; Submersible observations ; Actinistian ; Sarcopterygii
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis We report first observations on social behavior ofLatimeria chalumnae in its natural environment at around 200 m depth in the Comoro Archipelago, Western Indian Ocean. Coelacanths aggregate in small nonaggressive groups in sheltered lava-caves. They live in open site-attached social systems with individuals occupying large overlapping home ranges of more than 8 km coastline, some for a period of at least 2 years.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02028843
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Habitat and population size of the coelacanth Latimeria chalumnae at Grand Comoro (1991)
    Springer
    Environmental biology of fishes 32 (1991), S. 287-300 
    Details
    ISSN: 1573-5133
    Keywords: Living fossil ; Crossopterygian ; Social behaviour ; Cave dwelling ; Submersible study ; Home range ; Migration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis In 1987 and 1989 coelacanths were observed for the first time in their natural habitat with the help of submersibles. Coelacanths were found between 150–253 m depth, their preferential depth seems to be around 200 m; the water temperature ranged between 16.5–22.8° C. During the day coelacanths aggregate in small non-aggressive groups in sheltered lava-caves. Caves might be a limiting factor for distribution. At night they leave the caves for hunting by drifting singly along the steep lava slopes. They migrate between different caves located within a large home range covering more than 8 km coastline. Coelacanths are site-attached, some for a period of at least 2 years. Our own observations and earlier catch records show that only the west coast of Grand Comoro is a suitable coelacanth habitat with more structural complexity and prey fish abundance than other coastlines of the island. From our survey we estimated a total coelacanth population off Grand Comoro to be 150–210 individuals; a saturated population would be 370–510 individuals. This small relict population seems to be stable. International protection of coelacanths against commercial interests is needed
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00007462
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Locomotion, fin coordination and body form of the living coelacanth Latimeria chalumnae (1992)
    Springer
    Environmental biology of fishes 34 (1992), S. 329-356 
    Details
    ISSN: 1573-5133
    Keywords: Locomotory pattern ; Fast start ; Stroke amplitudes ; Velocity ; Paleoethological predictions ; Evolutionary changes ; Lungfish ; Tetrapods
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Locomotion and fin coordination of the only living crossopterygian fish Latimeria chalumnae were studied with submersibles in the fish's natural habitat at around 200 m depth off Grand Comoro, western Indian Ocean. Latimeria is a highly specialized predatory fish adapted for nocturnal drift hunting with good fast start capability. Twelve different forward movements and manoeuvres were found and described. The movements of the paired and unpaired fins were analysed. Propulsion was accomplished with downstrokes of the pectoral fins and right-left or left-right strokes of the unpaired lobed fins. The paired fins were not used for walking on the bottom. Swimming velocity, stroke amplitudes and stroke duration were analysed from films and videos taken in the wild. Stroke duration of the paired and unpaired lobed fins was similar and varies between 1.9 to 5.8 sec. Paired fins alternated synchronously. The coordination at approximately ø = 180° between opposite paired fins is stable and independent of locomotory pattern and velocity. A phase deviation of about 90°–100° exists between paired and unpaired fins. A model is developed that describes the functional implication of this deviation as a method of producing a steady swimming performance which smooths recoil movements and prevents rotation of the body. The novel slow and fast swimming mode of Latimeria is named in accordance with Breder's (1926) descriptive nomenclature as ‘coelacanthiform’. This study indicates a primary swimming function for the primitive sarcopterygian fin and confirms earlier evolutionary assumptions of a more open-water life style of coelacanth fishes. Paleoethological models of the walking habits of Latimeria have to be rejected. Synchronous alternation of paired fins originating from hydrodynamic demands could be a pre-adaptation and a shared derived character in sarcopterygian fishes that facilitated the fish-tetrapod transition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00004739
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    facet.materialart.
    Unknown
    Home range and migrations of the living coelacanth Latimeria chalumnae (1994)
    Springer
    In:  Marine Biology, 120 (2). pp. 171-180.
    Details
    Publication Date: 2017-08-03
    Description: The home range system of the coelacanth Latimeria chalumnae was investigated along 11 km coastline at Grande Comore, Western Indian Ocean, between 1987 and 1991. 67 individuals were identified on individual white dot patterns. The home range consisted of daytime caves where fish aggregated in groups of up to 14 individuals while at night individuals moved singly downwards to a depth of 250 to 300 m in search of food. Site fidelity of at least 5 yr was found. The coelacanths used several caves within their home ranges. Cave size, cave occupation rate, average and maximum group size and cave preferences were studied. Tracking experiments with ultrasonic transmitters revealed horizontal home ranges of at least 8 km width. Population estimates of 200 to 230 individuals at Grande Comore confirm earlier counts. Large home ranges and highly mobility in a topographically narrow habitat apparently favoured inbreeding of the small local island population.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/BF00349676
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
    facet.materialart.
    Unknown
    Locomotion, fin coordination and body form of the living coelacanth Latimeria chalumnae (1992)
    Springer
    In:  Environmental Biology of Fishes, 34 (4). pp. 329-356.
    Details
    Publication Date: 2017-08-03
    Description: Locomotion and fin coordination of the only living crossopterygian fish Latimeria chalumnae were studied with submersibles in the fish's natural habitat at around 200 m depth off Grand Comoro, western Indian Ocean. Latimeria is a highly specialized predatory fish adapted for nocturnal drift hunting with good fast start capability. Twelve different forward movements and manoeuvres were found and described. The movements of the paired and unpaired fins were analysed. Propulsion was accomplished with downstrokes of the pectoral fins and right-left or left-right strokes of the unpaired lobed fins. The paired fins were not used for walking on the bottom. Swimming velocity, stroke amplitudes and stroke duration were analysed from films and videos taken in the wild. Stroke duration of the paired and unpaired lobed fins was similar and varies between 1.9 to 5.8 sec. Paired fins alternated synchronously. The coordination at approximately ø = 180° between opposite paired fins is stable and independent of locomotory pattern and velocity. A phase deviation of about 90°–100° exists between paired and unpaired fins. A model is developed that describes the functional implication of this deviation as a method of producing a steady swimming performance which smooths recoil movements and prevents rotation of the body. The novel slow and fast swimming mode of Latimeria is named in accordance with Breder's (1926) descriptive nomenclature as ‘coelacanthiform’. This study indicates a primary swimming function for the primitive sarcopterygian fin and confirms earlier evolutionary assumptions of a more open-water life style of coelacanth fishes. Paleoethological models of the walking habits of Latimeria have to be rejected. Synchronous alternation of paired fins originating from hydrodynamic demands could be a pre-adaptation and a shared derived character in sarcopterygian fishes that facilitated the fish-tetrapod transition.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/BF00004739
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
    facet.materialart.
    Unknown
    CoelacanthLatimeria chalumnae aggregates in caves: first observations on their resting habitat and social behavior (1991)
    Springer
    In:  Environmental Biology of Fishes, 30 (3). pp. 281-286.
    Details
    Publication Date: 2017-08-03
    Description: We report first observations on social behavior ofLatimeria chalumnae in its natural environment at around 200 m depth in the Comoro Archipelago, Western Indian Ocean. Coelacanths aggregate in small nonaggressive groups in sheltered lava-caves. They live in open site-attached social systems with individuals occupying large overlapping home ranges of more than 8 km coastline, some for a period of at least 2 years.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/BF02028843
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 9
    facet.materialart.
    Unknown
    Coelacanths - the fate of a famous fish (1991)
    WHOI
    In:  Oceanus Magazine, 34 . pp. 44-45.
    Details
    Publication Date: 2017-08-10
    Type: Article , PeerReviewed
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 10
    facet.materialart.
    Unknown
    Natural habitat of coelacanths (1990)
    Nature Publishing Group
    In:  Nature, 346 (6282). pp. 323-324.
    Details
    Publication Date: 2017-08-10
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1038/346323a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...