By Rui Diogo
The key target of this paintings is, to assist make clear the interrelationships of catfishes, with significant implications at the research of the final evolution of those fishes. a good a part of this paintings, as a result, offers with a cladistic research of catfish higher-level phylogeny in accordance with broad morphological information, during which are incorporated a few terminal taxa no longer incorporated in earlier analyses, yet mostly a great number of characters normally excluded from these analyses, with specific cognizance being given to catfish morphology. This research supplies specific significance to complicated, built-in buildings. it will likely be curiosity to scholars, ichthyologists and biologists operating in evolution, taxonomy and phylogeny.
Read Online or Download Morphological Evolution, Adaptations, Homoplasies, Constraints, and Evolutionary Trends: Catfishes as a Case Study on General Phylogeny & Macroevolution PDF
Best marine biology books
Due to the fact 1972, scientists from around the globe engaged on basic questions of echinoderm biology and palaeontology have conferred every 3 years to trade present perspectives and effects. The eleventh foreign Echinoderm convention held on the collage of Munich, Germany, from 6-10 October 2003,continued this custom.
On February 24, 2010, Tilikum, the biggest killer whale at SeaWorld, by surprise dragged sunrise Brancheau, his coach, into the pool and killed her. Journalist Tim Zimmermann got down to discover why. His riveting account of Tilikum's lifestyles, and the heritage of killer whale leisure at marine parks, dives into the realm of the ocean's best predator.
Advances in Tuna Aquaculture: From Hatchery to industry offers distinctive overviews at the present prestige of tuna fisheries, fattening, and farming practices, in addition to advances in closed-cycle tuna aquaculture. members are popular scientists, the world over famous as specialists of their fields.
Marine environmental heritage analyses the altering relationships among human societies and marine average assets through the years. this is often the 1st booklet which offers in a scientific manner with the theoretical backgrounds of this self-discipline. significant theories and strategies are brought by means of major students of the sector.
- Ocean Acidification
- Tsunami and its Hazards in the Indian and Pacific Oceans (Pageoph Topical Volumes)
- Biomarkers for Stress in Fish Embryos and Larvae
- Eutrophication in the Baltic Sea: Present Situation, Nutrient Transport Processes, Remedial Strategies
- Dynamic Modeling for Marine Conservation
Additional info for Morphological Evolution, Adaptations, Homoplasies, Constraints, and Evolutionary Trends: Catfishes as a Case Study on General Phylogeny & Macroevolution
True enough. But this time at a generic level, which is precisely the strength of the procedure applied in this study. Morphological variation within a genus is necessarily less than within the family in which this genus is included, unless, of course, the family is monogeneric. The genera representing each family in the phylogenetic analysis are briefly listed below. 3). Family Akysidae. Monophyly well supported, two subfamilies recognised. One genus from each subfamily included in the analysis: the type genus Akysis (Akysinae) and Parakysis (Parakysinae).
Synapomorphies listed by Schaefer (1990: 204) to define the clade formed by astroblepids, loricariids and scoloplacids included: 1)'loss of open cranial fontanels'; 2) 'loss of cranial aperture which receives the cleithral dorsal process'; 3) 'presence of bifid jaw teeth'; 4) 'loss of interoperculum'; 5) 'ventrolateral shift in articulation of rib on sixth centrum'; 6) 'presence of lateral bone'; 7) 'loss of pterygoethmoid ligament'; 8) 'loss of cranial attachment'; 9) 'loss of interoperculomandibular ligament'; 10) 'shift in origin of retractor tentaculi muscle'; 11)'bifurcation of hyohyoideus muscles'.
B) Cladogram produced from the numerical analysis of 126 characters with a weighting (4) on one of them, namely the "number of vertebrae united to the complex vertebra" (Mo, 1991: 193). 64 and was only poorly resolved. The other (Fig. 6B) was based on a 'weighted' numerical analysis (also using Hennig 1986) of the same data matrix in which to one of the 126 characters ('number of vertebrae united to complex vertebra') was given a phylogenetic weight 4 times that of the other characters. 72 and, apart from two trichotomies, was completely resolved.
Morphological Evolution, Adaptations, Homoplasies, Constraints, and Evolutionary Trends: Catfishes as a Case Study on General Phylogeny & Macroevolution by Rui Diogo