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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

Taxonomic studies on the shells, allogzymes and parasites of European cockles in the Cerastoderma edule (L) and Cerastoderma gloucum (Bruguiere) species complex

Chao, P. P. January 2002 (has links)
No description available.
102

Herpetofaunal biodiversity of the endangered spiny-tailed lizards of the Ctenosaura quinquecarinata/flavidorsalis complex : geographic variation, mtDNA phylogeography and systematics

Hasbun Rose, Carlos Roberto January 2001 (has links)
No description available.
103

Studies on Rhabdopleura and the Bryozoa

Stebbing, A. R. January 1971 (has links)
No description available.
104

Studies on the biochemistry of marine Digenea

Thomas, J. S. January 1972 (has links)
No description available.
105

Molecular evolutionary processes in ctenostome bryozoans

Waeschenbach, A. January 2004 (has links)
The phylogenetic relationships between species of the stoloniferan ctenostome bryozoan genus <i>Bowerbankia</i> were examined using DNA sequences for two mitochondrial genes, 12S rDNA and cytochrome <i>c </i>oxidase subunit I (COI). The resultant phylogeny based on COI sequences was shown to be confounded by nuclear mitochondrial sequences (Numts). Primers specific to mtDNA copies of COI were designed. 12S rDNA sequences with mutations in highly conserved regions, as determined by secondary structure folding, are also suspected to be Numts, however, 12S rDNA Numts and cytoplasmic mitochondrial sequences could not be separated by phyogenetic methods. Identical COI Numts were found in the carnosan <i>Alcyonidium diaphanum</i> and several <i>Bowerbankia</i> species, suggesting that transfer into the nucleus predates the divergence of the Stolonifera and Carnosa. One 12S rDNA haplotype common to <i>Vesicularia spinosa</i>, <i>Amathia lendigera</i> and <i>bowerbankia </i>spp. and two common to <i>Bowerbankia</i> spp. and <i>Alcyonidium </i>spp. were found. The occurrence of these identical haplotypes suggests that nuclear transfer of 12S rDNA might have occurred once within the Vesiculariidae and twice prior to the divergence of the Stolonifera and the Carnosa. Bryozoan sequences were obtained for the first time for the nuclear ribosomal multigene family 18S rDNA - ITS1 - 5.8S and species specific-primers for the ctenostome bryozoan <i>Flustrellidra hispida</i> were designed. Sequences from two populations, Millport (Scotland) and Mumbles (Wales) were obtained, with no significant genetic structure detected between the two populations nor within populations; however, ITS1 copies in the Mumbles population were slightly more homogenised than they were in the Millport population. Possible underlying processes leading to this difference are discussed. Furthermore, pseudogene copies could also be identified for 18S rDNA - ITS1 - 5.8S rDNA. In order to avoid amplification of contaminant DNA originating from cryptic organisms commonly present on the exterior and in the interior of bryozoans, such as ciliates, stramenopiles and fungi, a method using individually lysed larvae, previously used on <i>Mytilus edulis (</i>Sutherland <i>et al</i> 1998), was adapted for bryozoans.
106

Studies on the biology of Porcellana

Smaldon, G. January 1973 (has links)
No description available.
107

The reproductive ecology of Mytilus edulis Linne

U. Maung Myint January 1979 (has links)
No description available.
108

Studies on the biology and zoogeography of Spirorbinae

Vine, P. J. January 1972 (has links)
No description available.
109

The carotid body and carotid sinus of the fowl (Gallus domesticus)

Chowdhary, D. S. January 1954 (has links)
No description available.
110

Molecular ecology of petrels (Pterodroma spp) from the Indian Ocean and NE Atlantic, and implications for their conservation management

Brown, Ruth Margaret January 2008 (has links)
No description available.

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