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  • 1
    Electronic Resource
    Electronic Resource
    Ecology and distribution of the benthic fauna in the shallow waters of the Red Sea (1971)
    Springer
    Marine biology 10 (1971), S. 113-133 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Approximately 500 animal species and plants are listed as being the most typical for the infratidal and shallow subtidal benthic fauna of the Red Sea. Most of them are divided into communities typical for various soft and hard substrata, and at different water depths. The oceanographic conditions and the development of several of the communities are discussed in general terms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00354828
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  • 2
    Electronic Resource
    Electronic Resource
    Population structure and growth in captivity of the spiny lobsterPanulirus penicillatus from Dahab, Gulf of Aqaba, Red Sea (1991)
    Springer
    Marine biology 111 (1991), S. 467-472 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Panulirus penicillatus (Olivier, 1791) (Decapoda: Palinuridae) is the most common spiny lobster in the Red Sea and is widely distributed in the Indian and Pacific Oceans. Lobsters (n=377) were collected on four occasions during 1986 on the coral reef at Dahab, Sinai, Egypt. Average size of the collected individuals was 70.5±24.6 mm carapace length (CL) for males and 63.2±15.9 mm CL for females. The sex ratio was 1:1.64 males to females. Length increment per molt was inversely correlated with size and ranged from 2.1 mm per molt in the 40 to 50 mm CL size class to less than 1 mm in the 60 to 70 mm CL size class. Average intermolt period was ca. 136 d for all size classes. The relationship between carapace length and body weight was expressed by the equation:W b=6.43 × 10−4 × (CL)2.89.P. penicillatus from Dahab differ in size, sex ratio and growth rate compared to other palinurid populations throughout their range. This might represent the effect of isolation and location at the edge of the geographical range for this species. It may also indicate an adaptation to their unique habitat in the coral reef in comparison to other palinurid species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01319420
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  • 3
    Electronic Resource
    Electronic Resource
    Polymorphism in gigantobacterial symbionts in the guts of surgeonfish (Acanthuridae: Teleostei) (1999)
    Springer
    Marine biology 133 (1999), S. 345-351 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The morphology and partial cytology of a group of bacteria-related organisms from the guts of surgeonfish are described. These gigantobacteria symbionts are encountered in the guts of various species of this fish family throughout the Indo-Pacific region and the Red Sea. They have been tentatively grouped and placed in a “family”, Epulopiscidae, according to the first species described, Epulopiscium fishelsoni Montgomery and Pollak, 1988. In addition to a morphological comparison between the various forms from different species of surgeonfish, suggestions are presented with regard to their possible morphological diversification during evolutionary and host-species specificity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050473
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  • 4
    Electronic Resource
    Electronic Resource
    Ecology of the northern Red Sea crinoids and their Epi- and Endozoic fauna (1974)
    Springer
    Marine biology 26 (1974), S. 183-192 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fourteen crinoid species are found along the coral reefs of the northern Red Sea that form aggregations of different species at various depths. The shallowest aggregation consists partly of Lamprometra klunzingeri and Capillaster multiradiatus, occurring subtidal to a depth of 2 to 5 m. Of this group, Heterometra savignii inhabits depths down to 12–15 m. Further down, another group of 10-armed crinoids occurs, dominated by Decametra chadwicki and Oligometra serripinna. The deepest aggregation of crinoids occurs at 45 m; its most common members are Colobometra arabica and Comaster distinctus. Feeding on micro- and nanoplankton, shallow-water crinoids show a circadian activity rhythm; in deeper aggregations (10 to 12 m), this behaviour changes with decreasing illumination, to a diurnal activity rhythm. The symbiotic animals living on crinoids comprise 27 taxons, among them Copepoda (6 species), Mollusca (2 species), Polychaeta (11 species, especially Myzostomida); Ophiurida (1 species), Crustacea, Decapoda (6 species); and the clingfish Lepadichthys lineatus. These symbiotic animals form food webs at various depths, according to the distribution of their crinoid host. The occurrence of Indo-West Pacific and Mediterranean commensals on the same crinoid in the Gulf of Aqaba is of special interest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388888
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  • 5
    Electronic Resource
    Electronic Resource
    Histology and ultrastructure of the skin of Lepadichthys lineatus (Gobiesocidae: Teleostei) (1972)
    Springer
    Marine biology 17 (1972), S. 357-364 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The skin of the Red Sea clingfish Lepadichthys lineatus Briggs, 1966, which lives on shallow-water crinoids, consists of a continuous layer of giant mucus-producing cells. Upon stimulation, these cells are able, in seconds, to envelope the fish entirely with a thick layer of their secretion. The cells are 75 to 290 μ high, and are enveloped by septa of compressed epithelium. They rest on a strong collagenous layer, and extend to the skin surface, where they open. The nuclei of the giant cells are large, and irregularly shaped; their cytoplasm has a very extensive endoplasmic reticulum and undergoes deep structural changes during maturation. Their ability to produce large amounts of mucus seems to be an adaptive device to protect the fish from contact with the rough surface of the crinoid host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00366747
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Rhinomuraena spp. (Pisces: Muraenidae): The first vertebrate genus with post-anally situated urogenital organs (1990)
    Springer
    Marine biology 105 (1990), S. 253-257 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rhinomuraena spp. are specialized, marine sand-dwelling ribbon-like eels, protandric in their sexual activity. With maturation they develop black, blue-yellow and yellow colour morphs, according to stages of sexual change. This investigation is based on fish collected around Fiji, near the Moluccas, Taiwan and Philippines from 1978 to 1989. The study of 20 individuals of 400 to 1170 mm total length disclosed that, contrary to all known Vertebrata, 80 to 82% of their gonads, that range in length between 80 to 400 mm, and the entire posterior kidney complex are situated post-anally, in two parallel pouches extending ventrally in the caudal part of the body. The kidney is situated dorsally and partially posteriorly to the gonads and attached to them.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01344294
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  • 7
    Electronic Resource
    Electronic Resource
    Ecological and biological phenomena influencing coral-species composition on the reef tables at Eilat (Gulf of Aqaba, Red Sea) (1973)
    Springer
    Marine biology 19 (1973), S. 183-196 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Observations performed on coral colonies damaged during a very low tide on the shallow-water reef tables at Eilat (Red Sea), showed that most colonies are able to regenerate if parts of the living tissue remain intact on the skeletons. Brain-like corals, such asFavia favus andPlatygyra lamellina, were found to be more resistant to dessication than the delicate bush-like forms. It was also observed that the exposed skeletons of corals were immediately covered by a successive group of algae with a rich invertebrate epifauna among them. It is postulated that unpredicted extreme low water, occurring once in several years, could be the factor that prevents crowding on the reef tables, thus keeping high the level of coralspecies diversity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02097137
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  • 8
    Electronic Resource
    Electronic Resource
    Food composition and feeding behavior of shallow-water crinoids at Eilat (Red Sea) (1969)
    Springer
    Marine biology 3 (1969), S. 46-57 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The food of 3 feather-stars, Lamprometra klunzingeri Hartlaub, 1890), Heterometra savignii (J. Müller, 1841) and Capillaster multiradiatus (Linnaeus, 1758), from the shallow water of Eilat (Red Sea) was found to be composed of planktonic and semi-benthalic organisms with a strong dominance of zooplankton. Monthly analyses of stomach contents showed seasonal changes in the participation of various systematic units in the diet. Food-comprising organisms were found to be selected according to size, and those measuring up to 400 μ formed 90% of the diet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00355592
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  • 9
    Electronic Resource
    Electronic Resource
    Isolation of a new toxin from the sponge Latrunculia magnifica in the Gulf of Aquaba (Red Sea) (1975)
    Springer
    Marine biology 30 (1975), S. 293-296 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The sponge Latrunculia magnifica was found to be toxic for fish. A toxin has been isolated from this sponge by organic extraction-column chromatography and thin-layer chromatography. Several chemical properties of the toxin were determined by spectroscopic analysis. Toxicity tests were performed on the fish Gambusia affinis. In vitro experiments showed the toxin to be a cholinesterase inhibitor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00390634
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  • 10
    Electronic Resource
    Electronic Resource
    Littoral fauna of the Red Sea: the population of non-scleractinian anthozoans of shallow waters of the Red Sea (Eilat) (1970)
    Springer
    Marine biology 6 (1970), S. 106-116 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Approximately 22 species of sea anemones and 20 species of alcyonarians were found on the reef fringing the shallow water at Eilat (Gulf of Aqaba) and other localities along the Red Sea coast of the Sinai Peninsula. Investigations showed that these 2 groups of non-scleractinian coelenterates from (on different substrates) well identified colonies, part of them inhabiting sandy bottoms, other groups growing on the reef surface. Observations lead to the conclusion that several of the sea anemones and alcyonarians can act, under certain conditions, as factors limiting the development of hermatypic corals. In some areas, several species of the 2 groups of animals are found together with their symbiotic partners, such as fishes and crustaceans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00347239
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