Consulta: subjectFacets:"Comparative biology"
Registros recuperados: 6
Data/hora: 11/06/2024 06:54:37

Comparing growth in surface and cave morphs of the species Astyanax mexicanus: insights from scales
Provedor de dados: 5
Autores: Simon, Victor; Elleboode, Romain; Mahe, Kelig; Legendre, Laurent; Ornelas-garcia, Patricia; Espinasa, Luis; Retaux, Sylvie.
Background Life in the darkness of caves is accompanied, throughout phyla, by striking phenotypic changes including the loss or severe reduction in eyes and pigmentation. On the other hand, cave animals have undergone constructive changes, thought to be adaptive, to survive in this extreme environment. The present study addresses the question of the evolution of growth in caves, taking advantage of the comparison between the river-dwelling and the cave-dwelling morphs of the Mexican tetra, Astyanax mexicanus. Results A sclerochronology approach was undertaken to document the growth of the species in these two very distinct habitats. Scales from 158 wild Astyanax mexicanus specimens were analyzed from three caves (Pachón, Tinaja and Subterráneo) and two...
Tipo: Text
Palavras-chave: Cave; Fish; Size; Age; Scales; Growth; Food; Comparative biology; Life history traits.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00412/52337/53124.pdf

The subjective nature of Linnaean categories and its impact in evolutionary biology and biodiversity studies
Provedor de dados: 16
Autores: Laurin, M.
Absolute (Linnaean) ranks are essential to rank-based nomenclature (RN), which has been used by the vast majority of systematists for the last 150 years. They are widely recognized as being subjective among taxonomists, but not necessarily in other fields. For this reason, phylogenetic nomenclature (PN) and other alternative nomenclatural systems have been developed. However, reluctance to accept alternative nomenclatural systems and continued use of higher taxa of a given Linnaean category in comparative analyses presumably reflect a lack of appreciation of the deleterious effects of the subjective nature of Linnaean categories in other biological fields, such as conservation and evolutionary biology. To make that point clearer, evolutionary models under...
Tipo: Article / Letter to the editor
Palavras-chave: Biological nomenclature; Codes of nomenclature; Comparative biology; Evolution; PhyloCode; Phylogenetic; Nomenclature; 42.21.
Ano: 2010
URL: http://www.repository.naturalis.nl/record/361032

Evolution of species-specific major seminal fluid proteins in placental mammals by gene death and positive selection
Provedor de dados: 16
Autores: Meslin, C.; Laurin, M.; Callebaut, I.; Druart, X.; Monget, P.
The seminal fluid is a complex substance composed of a variety of secreted proteins and has been shown to play an important role in the fertilisation process in mammals and also in Drosophila. Several genes under positive selection have been documented in some rodents and primates. Our study documents this phenomenon in several other mammalian taxa. We study the evolution of genes that encode for 20 proteins that are quantitatively predominant in the seminal fluid of at least one out of seven domestic animal species. We analyse the amino acid composition of these proteins for positive selection and for the presence of pseudogenes. Genes that disappeared through pseudogenisation include KLK2 in cattle, horse and mice. Traces of positive selection are found...
Tipo: Article / Letter to the editor
Palavras-chave: Molecular evolution; Multivariate phylogenetic pairwise comparisons; Reproductive isolation; Speciation; Comparative biology; Pseudogenisation; 42.64; 42.13; 42.70.
Ano: 2015
URL: http://www.repository.naturalis.nl/record/575180

DEVELOPMENT OF Tetranychus urticae KOCH (ACARI: TETRANYCHIDAE) IN DIFFERENT STRAWBERRY CULTIVARS
Provedor de dados: 94
Autores: KARLEC,FÁBIO; DUARTE,ADRIANE DA FONSECA; OLIVEIRA,ANA CLÁUDIA BARNECHE DE; CUNHA,UEMERSON SILVA DA.
ABSTRACT  Two-spotted spider mite, Tetranychus urticae Koch, is considered the main pest in strawberry crop. The control of this species is hampered by the low efficiency of products currently used, occurrence of populations resistant to acaricides and high reproductive potential of this pest. This leads to the use of pesticides and increased agrochemical residues in fruits. The use of resistant cultivars is considered the ideal control method because they maintain mite populations below levels of economic damage, minimize the environmental impact of pesticides at no extra cost to the farmer, and serve as an auxiliary tool in integrated pest management. In this sense, this study evaluated the resistance of strawberry cultivars to T. urticae by studying the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Two-spotted spider mite; Comparative biology; Antixenosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000100401

Regulation of HIF-1α and p53 in stress responses in the subterranean rodents Lasiopodomys mandarinus and Lasiopodomys brandtii (Rodentia: Cricetidae)
Provedor de dados: 103
Autores: Shi,Luye; Jiang,Mengwan; Li,Mengyang; Shang,Xiaozhen; Li,Xiujuan; Huang,Maolin; Wu,Yue; Qiao,Congcong; Wang,Xinrui; Tian,Xiangyu; Shi,Yuhua; Wang,Zhenlong.
ABSTRACT The response mechanism and interaction patterns of HIF-1α and p53 in animals in an hypoxic environment are crucial for their hypoxic tolerance and adaptation. Many studies have shown that underground rodents have better hypoxic adaptation characteristics. However, the mechanism by which HIF-1α and p53 in underground rodents respond to hypoxic environments compared with in ground rodents remains unclear. Further, whether a synergy between HIF-1α and p53 enables animals tolerate extremely hypoxic environments is unclear. We studied HIF-1α and p53 expression in the brain tissue and cell apoptosis in the hippocampal CA1 region during 6 hours of acute hypoxia (5% oxygen) in Lasiopodomys mandarinus (Milne-Edwards, 1871) and Lasiopodomys brandtii (Radde,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comparative biology; Hippocampal CA1 region; Oxygen; Subterranean rodents.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702021000100305

Naming structures and qualifying properties of anuran bioacoustical signals: a call for a homology-based nomenclature and equality for quantitative data
Provedor de dados: 42
Autores: HEPP,FÁBIO; POMBAL JR,JOSÉ P.
Abstract: There is a significant interest for using call features in taxonomic and systematic studies. However, the indiscriminate use of alternative terms for the acoustic structures has precluded reliable comparisons among species without directly checking recordings of all compared species. Recent attempts of nomenclature standardization have focused on term and structure definitions instead of homology. Here, we argue that application of nomenclatural propositions based on universal similarities is pragmatically difficult (likely impossible) and, most importantly, inaccurate regarding to assessment of homology. If homology is not properly assessed, nomenclature can lead to artificial groupings, which can hamper our understanding of the natural world....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Bioacoustics; Comparative biology; Systematics; Terminology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700612