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Fish Gill Structural Changes Induced by Toxicants and Other Irritants: A Statistical Review
Here I quantitatively review the literature on how fish gill morphology is affected by chemical and physical irritants in the surrounding water (e.g. various toxicants, extremes of temperature or p...
Ecdysozoan phylogeny and Bayesian inference: first use of nearly complete 28S and 18S rRNA gene sequences to classify the arthropods and their kin.
Better taxonomic resolution and recovery of established taxa were obtained here, especially with Bayesian inference, than in previous parsimony-based studies that used 18S rRNA sequences, and should revive interest in using rRNA genes to study arthropod and ecdysozoan relationships. Expand
Further use of nearly complete 28S and 18S rRNA genes to classify Ecdysozoa: 37 more arthropods and a kinorhynch.
This work expands on a study from 2004 by Mallatt, Garey, and Shultz [Mallatt, J.M., Garey, J.R., Shultz, J.W., 2004. Ecdysozoan phylogeny and Bayesian inference: first use of nearly complete 28S andExpand
Evaluating hypotheses of deuterostome phylogeny and chordate evolution with new LSU and SSU ribosomal DNA data.
The rRNA-gene analysis refutes most of these hypotheses of deuterostome phylogeny that were constructed from morphological, embryological, and paleontological evidence and advocates a rethinking of chordate and vertebrate origins. Expand
Phylogeny of elasmobranchs based on LSU and SSU ribosomal RNA genes.
Several different molecular studies now refute the Hypnosqualea hypothesis of elasmobranch interrelationships, and are consistent with the idea that "orbitostylic" sharks form a monophyletic group. Expand
Testing the new animal phylogeny: first use of combined large-subunit and small-subunit rRNA gene sequences to classify the protostomes.
It is concluded that molecular systematists should use combined LSU + SSU rRNA genes rather than SSU alone for phylogenetic analyses, as both Ecdysozoa and Lophotrochozoa were strongly supported and the position of chaetognaths within protostomes remains uncertain. Expand
Nearly complete rRNA genes assembled from across the metazoan animals: effects of more taxa, a structure-based alignment, and paired-sites evolutionary models on phylogeny reconstruction.
It is found that systematic elimination of approximately 6% of the sequences, including the divergent or unstably placed sequences of cephalopods, arrowworm, symphylan and pauropod myriapods, and of myzostomid and nemertodermatid worms, led to a tree that supported EcdysozoA, Lophotrochozoa, Protostomia, and Bilateria. Expand
Ventilation and the origin of jawed vertebrates: a new mouth
The origin of jaws is investigated by re-assessing homologies between the oropharyngeal regions of Agnatha and Chondrichthyes and it is proposed that jaws first enlarged for a ventilatory function, then enlarged further to grasp prey in feeding. Expand
28S and 18S rDNA sequences support the monophyly of lampreys and hagfishes.
Moderate to very strong support is provided for the monophyly of the cyclostomes in lampreys plus hagfishes and the currently accepted hypothesis of a lamprey-gnathostome clade is moderately rejected by the Kishino-Hasegawa test and resoundingly rejected by parametric bootstrap tests. Expand
Fossil sister group of craniates: Predicted and found
Haikouella agrees so closely with recent predictions about pre‐craniates that the difficult problem of craniate origins is nearly solved. Expand