This paper reviews some of the important properties of geometric morphometric shape variables and discusses the advantages and limitations of the use of such data in studies of phylogeny. A method for fitting morphometric data to a phylogeny (i.e., estimating ancestral states of the shape variables) is presented using the squared-change parsimony criterion for estimation. These results are then...

the research carried out the length-length relationships (llr), length-weight relationship (lwr) and condition factor of nine freshwater small indigenous species viz. g. giuris, e . danricus, m . pancalus , l . guntea, c. fasciatus, p. sophore, h .  fossilis, c .   punctatus and m. cavasius from the waterbodies of nageshwari, bangladesh. relationships among different body lenght parameters of e...

length-weight relationship is the most commonly used analysis which has been used for several purposes in fisheries field among which estimation of weight from length is the most popular one. the present study has been performed to analyze the length-weight relationship of mystus tengara , a freshwater catfish of indian subcontinent. total length and body weight of the studied specimens have be...

Understanding sexual dimorphism is very important in studies of insect evolution. Though has been the subject numerous entomological there have no examined Dorcadion anatolicum Pic, 1900 which endemic to Turkey. In this study, using geometric morphometrics, we analyzed size and shape pronotum specimens collected from Konya Province. Results morphometrics revealed that can be effectively used mo...

as a result of our survey in february 2011, a single female specimen of n. dipterygia was found in the tidal zone of chabahar bay and it was caught with a small deep net. the fish was transferred in a bucket to the fisheries laboratory of chabahar maritime university and kept in a salt water aquarium for further examinations. we witnessed the birth of 6 juveniles after 3 days. the female and he...

Although the theory andmethods of the relatively new field of geometric morphometrics are becoming well developed (for an overview, see [1]), it has not yet been applied as widely as it could be, owing to the lack of easily accessible introductory guides. This primer, by Miriam Zelditch and colleagues, should make the field more accessible because the new methods described here are relatively s...

For this biologist, morphometrics is the characterization of biologically relevant forms and patterns in ways that allow their quantitative handling: a considerably wider definition than usual. There are many different methods by which we may carry out this characterization, many different types of structure to be characterized, and many different ways in which the results may be used within sy...

The field of morphometrics has transitioned relatively smoothly through several different phases, from D’Arcy Thompson’s (1917) extraordinary and influential treatise on growth and form, through the influx of algebraic and statistical methods related to eigenanalysis, cluster analysis, and multidimensional scaling, to direct landmark-based Procrustes and deformation methods that echo Thompson’s...

Nontraditional or geometric morphometric methods have found wide application in the biological sciences, especially in anthropology, a field with a strong history of measurement of biological form. Controversy has arisen over which method is the "best" for quantifying the morphological difference between forms and for making proper statistical statements about the detected differences. This pap...