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  • 1
    Electronic Resource
    Electronic Resource
    The Treatment of Simple Aliphatic Amines with Nitrous Acid (1941)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 63 (1941), S. 1118-1120 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01849a064
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  • 2
    Electronic Resource
    Electronic Resource
    Asiatic cobras: Systematics and snakebite (1991)
    Springer
    Cellular and molecular life sciences 47 (1991), S. 205-209 
    Details
    ISSN: 1420-9071
    Keywords: Naja ; cobra ; Serpentes ; systematics ; snakebite ; antivenom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The population affinities of the Asiatic cobras of the genusNaja are investigated, using multivariate analysis of a range of morphological characters. This complex, which was formerly thought to be monospecific, consists of at least eight full species. In some cases, species whose bites require different antivenoms occur sympatrically. The new understanding of the systematics of the Asiatic cobra complex calls for a reappraisal of cobra antivenom use in Asia, and for more research into venom composition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01945429
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  • 3
    Electronic Resource
    Electronic Resource
    Reticulate evolution and cladism: Tests for the direction of evolution (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 1242-1244 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Reticulate evolution between ancestral-descendant lineages can be critically tested for by investigating the relationship between out-group and mid-point roots on numerically derived cladograms. The western grass-snake provides a worked example for the theoretical test.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959765
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  • 4
    Electronic Resource
    Electronic Resource
    Multivariate analysis of the mud crab Scylla serrata (Brachyura: Portunidae) from four locations in Southeast Asia (1997)
    Springer
    Marine biology 128 (1997), S. 55-62 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The large, edible mud crab Scylla serrata (Forskål) exhibits different phenotypes which are recognised by the fishermen of Southeast Asia and are given local names such as “white”, “green”, “red” or “black” crabs on the basis of their colouration. A preliminary study using multivariate techniques was undertaken in order to examine the degree of dissimilarity between the different morphs of commercially fished stocks of S. serrata. Twenty-two morphometric and 20 meristic characters were measured on male crabs from four locations in three countries in Southeast Asia, including Surat Thani in Thailand where “black” and “white” morphs exist sympatrically. Canonical variate analysis (CVA) on the morphometric data discriminated three groups with no chain-linking. Surat Thani “white” crabs and those from south Vietnam were phenotypically similar and formed one distinct group; a second group contained crabs from Ranong (Thailand) and Sarawak which were phenotypically “black”; the third group contained “black” crabs from Surat Thani. CVA on meristic data confirmed two groupings, but implied that the Surat Thani “black” morph may only be a variant of the Surat Thani/Vietnam “white” form, rather than a third species. These findings are discussed in relation to the ecology, fishery management and aquaculture potenial of S. serrata.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050068
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  • 5
    Electronic Resource
    Electronic Resource
    Geographic variation in Loligo forbesi in the Northeast Atlantic Ocean: analysis of morphometric data and tests of causal hypotheses (1994)
    Springer
    Marine biology 119 (1994), S. 541-547 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Geographic variation in the squid Loligo forbesi was investigated using multivariate analysis of morphometric and meristic characters in samples of squid taken from 13 localities in the Northeast Atlantic Ocean. Two character sets, body morphometrics and beak morphometrics, indicated similar patterns of variation, with squid from the Azores differing markedly from those on the continental shelf. No consistent pattern was apparent in meristic data. Partial Mantel tests indicated that similarity matrices for morphological data were significantly correlated with distance matrices for (a) geographic proximity, (b) whether the capture site was on the continental shelf or the Azorean bank, and (c) (beak data only) average seasurface temperature at site of capture. Partial Mantel tests on allozyme data for the same individuals support hypothesis (b). The results suggest that L. forbesi in the Azores may reasonably be regarded as a distinct stock, differing significantly from L. forbesi on the continental shelf.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00354316
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  • 6
    Electronic Resource
    Electronic Resource
    Optic gland enlargement and female gonad maturation in a population of the octopuseledone cirrhosa: a multivariate analysis (1984)
    Springer
    Marine biology 79 (1984), S. 127-132 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Eleven principal component analyses were performed on morphometric data from a series of monthly samples of the octopusEledone cirrhosa (Lamarck) collected from March 1978 through January 1979 in the Aberdeen (Scotland) area. This technique has allowed a partitioning of general growth effects from variation in the reproductive system. Optic gland size varies as a reproductive character together with ovary and oviducal glands. Optic gland size not clearly associated with other cerebral organs, the brain and optic lobes. The association between the reprountive characters developed during the onset of the main period of reproductive maturation in the early summer of 1978 and persisted for the remainder of that year. This result supports the experimental evidence linking optic gland enlargement with female gonad maturation and suggests that this process occurs normally in the field population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00951821
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  • 7
    Electronic Resource
    Electronic Resource
    Parallel within-island microevolution of lizards on neighbouring islands (1991)
    [s.l.] : Nature Publishing Group
    Nature 352 (1991), S. 60-62 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Chalcides sexlineatus is endemic to the Canary Island of Gran Canaria (Spain) where it shows within-island geographic variation in several morphological characteristics6'7. The sister species Chalcides viridanus is present on the adjacent island of Tenerife. The colour patterns of 432 C. viridanus ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/352060a0
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  • 8
    Electronic Resource
    Electronic Resource
    Book reviews (1982)
    Springer
    Surveys in geophysics 5 (1982), S. 83-86 
    Details
    ISSN: 1573-0956
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01450245
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  • 9
    Electronic Resource
    Electronic Resource
    A novel biochemical systematic technique for herpetology based on epidermal keratin (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 700-702 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Using green geckos (Phelsuma) the molecular weights and isoelectric points of S-carboxymethylated keratin monomers from fresh and preserved reptile epidermis were investigated. Isoelectric focussing reveals that several of the circa 35 components differ between genera, species and races and that the relative similarity of the SCMK pattern is directly related to evolutionary similarity and is of considerable taxonomic value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01967931
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  • 10
    Electronic Resource
    Electronic Resource
    Experimental detection of rapid evolutionary response in natural lizard populations (1991)
    [s.l.] : Nature Publishing Group
    Nature 353 (1991), S. 347-348 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The manipulative field experiment described here was designed to test the adaptive nature of morphological variation. We constructed four large-scale lizard-proof enclosures and translocated samples of four 'source' populations, representing the four main ecotypes (Fig. 1) into these enclosures. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/353347a0
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