نتایج جستجو برای: scyphozoa

تعداد نتایج: 265  

Journal: :Molecular marine biology and biotechnology 1998
M N Dawson K A Raskoff D K Jacobs

Successful preservation of tissue samples is a prerequisite for long field studies in remote areas. However, there is little published information concerning field preservation of marine invertebrate tissues for DNA analyses. This omission is significant because marine biodiversity is centered in the Indo-Pacific, where immediate DNA analysis is often impossible. Consequently, we used an assay ...

Journal: :The Biological bulletin 2001
M N Dawson D K Jacobs

Morphological taxonomy suggests that marine faunas are species poor compared to terrestrial and freshwater faunas (1). This dichotomy has been attributed to the unique potential of marine plankters for distant dispersal across homogenous oceans with few barriers to gene flow (2). The relative scarcity of opportunities for allopatric divergence has resulted in depauperate marine faunas character...

Journal: :Frontiers in Marine Science 2021

Many pigments, such as melanins, are widely distributed throughout the animal kingdom. Others have arisen novelties in particular lineages, for example, Green Fluorescent Protein (GFP) found cnidarians. While GFPs, used fluorescent tags biomedical research, most famous cnidarian other novel proteins also been identified within this phylum. A blue protein that contains a Kringle (KR) domain inse...

2011
simone neethling alan channing lisa-ann gershwin

A new record of Crambionella stuhlmanni is reported from the east coast of South Africa. The material is described using quantitative morphological data, and mitochondrial (CO1) and nuclear (ITS-1) sequence data. The species can be diagnosed by a combination of morphological features including the presence of conical projections on velar lappets, the absence of orbicular appendages among mouthl...

2004
Antonio C. Marques Allen G. Collins

A cladistic analysis of 87 morphological and life history characters of medusozoan cnidarians, rooted with Anthozoa, results in the phylogenetic hypothesis (Anthozoa (Hydrozoa (Scyphozoa (Staurozoa, Cubozoa)))). Staurozoa is a new class of Cnidaria consisting of Stauromedusae and the fossil group Conulatae. Scyphozoa is redefined as including those medusozoans characterized by strobilation and ...

Journal: :Molecular biology and evolution 2003
Andrea Ender Bernd Schierwater

The phylum Placozoa is represented by a single known species, Trichoplax adhaerens, a tiny marine organism that represents the most simple metazoan bauplan. Because of the latter, placozoans were originally considered the most basal metazoan phylum. A misinterpretation of the life cycle at the turn of the century and some more recent molecular phylogenetic analyses have placed Trichoplax as a d...

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