Degeneration patterns of the worker spermatheca during morphogenesis in ants (Hymenoptera: Formicidae).

abstract：:Genetic heterogeneity and homogeneity are associated with distinct sets of adaptive advantages and bottlenecks, both in developmental biology and population genetics. Whereas populations of individuals are usually genetically heterogeneous, most multicellular metazoans are genetically homogeneous. Observing that resou...

journal_title：Evolution & development

authors： Hamant O,Bhat R,Nanjundiah V,Newman SA

更新日期：2019-05-01 00:00:00

abstract：:Jaw shedding and replacement of Diopatra aciculata (Onuphidae, Eunicida), by the same process as arthropod molting, involving apolysis and ecdysis, is described here. These observations suggest that molting has either evolved convergently in eunicidan polychaetes and ecdysozoans or it was present in the last ecdysozoa...

journal_title：Evolution & development

authors： Paxton H

更新日期：2005-07-01 00:00:00

abstract：:Geophilomorph centipedes show variation in segment number (a) between closely related species and (b) within and between populations of the same species. We have previously shown for a Scottish population of the coastal centipede Strigamia maritima that the temperature of embryonic development is one of the factors th...

journal_title：Evolution & development

authors： Vedel V,Apostolou Z,Arthur W,Akam M,Brena C

更新日期：2010-07-01 00:00:00

abstract：:orthodenticle (otd) genes are found throughout the animal kingdom and encode well-studied homeodomain transcription factors that share conserved functions in cephalization, head segmentation, brain patterning, and the differentiation of photoreceptors. Otd proteins have been proposed as ancestral key players in anteri...

journal_title：Evolution & development

authors： Schetelig MF,Schmid BG,Zimowska G,Wimmer EA

更新日期：2008-11-01 00:00:00

abstract：:The regulation of floral organ identity was investigated using a forward genetic approach in five floral homeotic mutants of Thalictrum, a noncore eudicot. We hypothesized that these mutants carry defects in the floral patterning genes. Mutant characterization comprised comparative floral morphology and organ identity...

journal_title：Evolution & development

authors： Martínez-Gómez J,Galimba KD,Coté EY,Sullivan AM,Di Stilio VS

更新日期：2020-11-12 00:00:00

abstract：:The proximo-distal axis of the arthropod leg is patterned by mutually antagonistic developmental expression domains of the genes extradenticle, homothorax, dachshund, and Distal-less. In the deutocerebral appendages (the antennae) of insects and crustaceans, the expression domain of dachshund is frequently either abse...

journal_title：Evolution & development

authors： Sharma PP,Schwager EE,Extavour CG,Giribet G

更新日期：2012-11-01 00:00:00

abstract：:LEAFY HULL STERILE1 (LHS1) is an MIKC-type MADS-box gene in the SEPALLATA class. Expression patterns of LHS1 homologs vary among species of grasses, and may be involved in determining palea and lemma morphology, specifying the terminal floret of the spikelet, and sex determination. Here we present LHS1 expression data...

journal_title：Evolution & development

authors： Reinheimer R,Malcomber ST,Kellogg EA

更新日期：2006-05-01 00:00:00

abstract：:When approaching the study of terminal growth and segmentation, comparative morphology provides an important guide to formulate questions. There are often problems in unambiguously identifying the axis along which we wish to study terminal (often, actually, subterminal) growth, especially when the trunk axis is poster...

journal_title：Evolution & development

authors： Minelli A

更新日期：2005-11-01 00:00:00

abstract：:Repeated tooth initiation occurs often in nonmammalian vertebrates (polyphyodontism), recurrently linked with tooth shedding and in a definite order of succession. Regulation of this process has not been genetically defined and it is unclear if the mechanisms for constant generation of replacement teeth (secondary den...

journal_title：Evolution & development

authors： Fraser GJ,Berkovitz BK,Graham A,Smith MM

更新日期：2006-09-01 00:00:00

abstract：:Organizers of the symposium Starting from Fins: Parallelism in the Evolution of Limbs and Genitalia intended it 1) to begin debates and discussions about parallelism, serial homology and transitions in development, as well as evolution of gene function and theories of origins and 2) to examine closely the potential si...

journal_title：Evolution & development

authors： Rosa-Molinar E,Burke AC

更新日期：2002-03-01 00:00:00

abstract：:Anuran development is usually described using model species, most notably Xenopus laevis and Rana pipiens. We describe the development of the East African Reed Frog, Hyperolius puncticulatus, a species displaying development that is highly divergent from the "classic" anuran developmental pattern. Although having smal...

journal_title：Evolution & development

authors： Chipman AD,Haas A,Khaner O

更新日期：1999-07-01 00:00:00

abstract：:The mouse mandible has long served as a model system for studying the development and evolution of complex morphological structures. We used the methods of geometric morphometrics to reassess the hypothesis that the mandible consists of two separate modules: an anterior part bearing the teeth and a posterior part with...

journal_title：Evolution & development

authors： Klingenberg CP,Mebus K,Auffray JC

更新日期：2003-09-01 00:00:00

abstract：:Phenotypes of organisms are not determined completely genetically, but vary according to environmental factors (phenotypic plasticity). Some organisms express several discrete adaptive phenotypes (polyphenism). Social insects possess a few types of individuals (castes) in their colonies, to which specific tasks are al...

journal_title：Evolution & development

authors： Miura T

更新日期：2005-03-01 00:00:00

abstract：:The relation of developmental plasticity to evolutionary diversification is a key component of evolutionary theory involving developmental bias, but the basis of the relationship varies among traits and among taxa. Here I review some scenarios of how structural integration during early organogenesis could influence th...

journal_title：Evolution & development

authors： Kavanagh K

更新日期：2020-01-01 00:00:00

abstract：:"Hormone manipulation" is being used increasingly in evo-devo studies as the sole or primary technique to investigate the regulation of insect polymorphism by hormones, most notably juvenile hormone (JH). This manuscript critically evaluates the limitations and strengths of this indirect method for inferring aspects o...

journal_title：Evolution & development

authors： Zera AJ

更新日期：2007-09-01 00:00:00

abstract：:Living archosaurs (crocodiles and birds) represent an intriguing evo-devo model system. Although close in phylogenetic relationship, the two lineages show considerable divergence in trends of phenotypic evolution. The head anatomy of recent crocodilians has changed little in comparison with that of their crocodylomorp...

journal_title：Evolution & development

authors： Kundrát M

更新日期：2009-09-01 00:00:00

abstract：:The full-length sequence and developmental expression of amphioxus AmphiFoxE4 are described. Transcripts of the gene are first detected in the pharyngeal endoderm, where the club-shaped gland is forming and subsequently in the definitive gland itself. AmphiFoxE4 is closely related to vertebrate genes encoding the thyr...

journal_title：Evolution & development

authors： Yu JK,Holland LZ,Jamrich M,Blitz IL,Hollan ND

更新日期：2002-01-01 00:00:00

abstract：:The astounding variety of angiosperm flower morphologies has evolved in response to many selective forces. Flower development is highly coordinated and involves developmental associations between size and shape, ontogenetic allometry, which in turn affect the morphology of mature flowers. Although ontogenetic allometr...

journal_title：Evolution & development

authors： Strelin MM,Benitez-Vieyra S,Fornoni J,Klingenberg CP,Cocucci A

更新日期：2018-01-01 00:00:00

abstract：:The N-terminal region of human HOXA13 has seven discrete polyalanine tracts. Our previous analysis of these tracts in multiple major vertebrate clades suggested that three are mammal-specific. We now report the N-terminal HOXA13 repetitive tract structures in the monotreme Tachyglossus aculeatus (echidna). Contrary to...

journal_title：Evolution & development

authors： Lehoczky JA,Innis JW

更新日期：2008-07-01 00:00:00

abstract：:Apical organs are a well-known structure in almost all ciliated eumetazoan larvae, although their function is poorly known. A review of the literature indicates that this small ganglion is the "brain" of the early larva, and it seems probable that it represents the brain of the ancestral, holopelagic ancestor of all e...

journal_title：Evolution & development

authors： Nielsen C

更新日期：2005-09-01 00:00:00

abstract：:Astacin-like metalloproteases are ubiquitous in the animal kingdom but their phylogenetic relationships and ancient functions within the Metazoa are unclear. We have cloned and characterized four astacin-like cDNAs from the marine hydroid Hydractinia echinata and performed a database search for related genes in the dr...

journal_title：Evolution & development

authors： Möhrlen F,Maniura M,Plickert G,Frohme M,Frank U

更新日期：2006-03-01 00:00:00

abstract：:Variation in axial formulae (i.e., number and identity of vertebrae) is an important feature in the evolution of vertebrates. Vertebrae at different axial positions exhibit a region-specific morphology. Key determinants for the establishment of particular vertebral shapes are the highly conserved Hox genes. Here, we a...

journal_title：Evolution & development

authors： Böhmer C,Rauhut OW,Wörheide G

更新日期：2015-09-01 00:00:00

abstract：:In termites, the capacity of workers to differentiate into neotenic reproductives is an important characteristic that deserves particular attention. To gain insight into the differentiation pathway, the potentialities of workers and the endocrinal changes during the formation of neotenics were compared in two sympatri...

journal_title：Evolution & development

authors： Leniaud L,Darrouzet E,Dedeine F,Ahn K,Huang Z,Bagnères AG

更新日期：2011-03-01 00:00:00

abstract：:The larval skeletons of sea urchins show considerable morphological diversity, even between closely related species, although the evolutionary history and functional significance of this diversity are poorly understood. To infer the evolutionary history of the skeletal morphology, we focused on echinometrid species fo...

journal_title：Evolution & development

authors： Kinjo S,Shirayama Y,Wada H

更新日期：2008-09-01 00:00:00

abstract：:The Drosophila sex comb (SC) has been hailed as a powerful tool for integrative studies in development, evolution, and behavior, but its ontogeny is poorly understood, even in the model organism Drosophila melanogaster. Using 4D live imaging and other techniques, we carried out a detailed analysis of the cellular even...

journal_title：Evolution & development

authors： Atallah J,Liu NH,Dennis P,Hon A,Godt D,Larsen EW

更新日期：2009-03-01 00:00:00

abstract：:The highly specialized cephalopod cardiovascular system has long been considered a valuable model for understanding the evolution of circulatory systems. Despite the number of studies devoted to this topic, the developmental regulatory mechanisms remain largely unexplored. Here, we focus on the vascular endothelial gr...

journal_title：Evolution & development

authors： Yoshida MA,Shigeno S,Tsuneki K,Furuya H

更新日期：2010-01-01 00:00:00

abstract：:Heterochrony is an important mechanism in the evolution of amphibians. Although studies have centered on the relationship between size and shape and the rates of development, ossification sequence heterochrony also may have been important. Rigorous, phylogenetic methods for assessing sequence heterochrony are relative...

journal_title：Evolution & development

authors： Harrington SM,Harrison LB,Sheil CA

更新日期：2013-09-01 00:00:00

abstract：:Mollusks have a wide variety of body plans, which develop through conserved early embryogenesis, namely spiral embryonic development and trochophore larvae. Although the comparative study of mollusks has attracted the interest of evolutionary developmental biology researchers, less attention has been paid to bivalves....

journal_title：Evolution & development

authors： Wada H,Phuangphong S,Hashimoto N,Nagai K

更新日期：2020-11-01 00:00:00

abstract：:Geophilomorph centipedes exhibit a number of unique characteristics that make them of particular developmental and evolutionary interest. Segment numbers in geophilomorphs are higher than in any other centipedes, ranging from 27 to 191. They may be constant within a species, presenting in extreme form the "counting" p...

journal_title：Evolution & development

authors： Chipman AD,Arthur W,Akam M

更新日期：2004-03-01 00:00:00

abstract：:An ongoing challenge to evolutionary developmental biology is to understand how developmental evolution on the level of populations and closely related species relates to macroevolutionary transformations and the origin of morphological novelties. Here we explore the developmental basis of beetle horns, a morphologica...

journal_title：Evolution & development

authors： Moczek AP,Nagy LM

更新日期：2005-05-01 00:00:00