Results 21 to 30 of about 2,626,290 (294)

Population biology of dominant fish species of the Santa Bárbara river, a tributary of the Nova Avanhandava reservoir (low Tietê river, São Paulo State, Brazil) - DOI: 10.4025/actascibiolsci.v31i1.650

Acta Scientiarum: Biological Sciences, 2009
The aim of this study is to characterize some population biology parameters of P. squamosissimus, A. altiparanae and S. maculates, the dominant fish species of the Santa Bárbara river, a tributary of the Nova Avanhandava reservoir, low Tietê river.
Ana Paula Vidotto, Edmir Daniel Carvalho
doaj   +1 more source

Evidence of Genomic Diversification in a Natural Symbiotic Population Within Its Host

Frontiers in Microbiology, 2022
Planktonic cells of the luminous marine bacterium Vibrio fischeri establish themselves in the light-emitting organ of each generation of newly hatched Euprymna scolopes bobtail squid.
Clotilde Bongrand, Eric Koch, Daniel Mende, Anna Romano, Susannah Lawhorn, Margaret McFall-Ngai, Edward F. DeLong, Edward G. Ruby   +7 more
doaj   +1 more source

Determination of polar bear (Ursus maritimus) individual genotype and sex based on DNA extracted from paw-prints in snow

Frontiers in Conservation Science, 2023
Polar bears rely upon sea ice to hunt, travel, and reproduce. Declining sea ice extent and duration has led polar bears to be designated as “threatened” (ESA). Population monitoring is vital to polar bear conservation; but recently, poor sea ice has made
Andrew L. Von Duyke, Justin A. Crawford, Lori Quakenbush, Jennifer R. Adams, Lisette P. Waits   +4 more
doaj   +1 more source

The biology of Aedes (Ochlerotatus) albifasciatus Macquart, 1838 (Diptera: Culicidae) in Central Argentina

Memorias do Instituto Oswaldo Cruz, 1995
Aedes albifasciatus is a flood water mosquito ocurring in the southern countries of South America. It is a competent vector of the Western Equine Encephalitis (WEE) and causes important losses on milk and beef production in central Argentina.
Francisco F. Ludueña Almeida, David E. Gorla   +1 more
doaj   +1 more source

Non-Hermitian Localization and Population Biology

, 1998
The time evolution of spatial fluctuations in inhomogeneous d-dimensional biological systems is analyzed. A single species continuous growth model, in which the population disperses via diffusion and convection is considered.
A. J. Koch, A. Kolmogoroff, B. I. Shklovskii, B. Movaghar, B. Movaghar, B. Shraiman, C. H. Li, D. Forster, D. Haarer, D. R. Nelson, D. R. Nelson, D. S. Fisher, D. S. Fisher, D. T. Natterman, David R. Nelson, F. R. Gantmacher, G. B. Whitham, G. Grinstein, H. Berg, I. V. Goldsheid, J. A. Aronovitz, J. D. Murray, J. Miller, J.-I. Wakita, J.D. Gunton, K. B. Efetov, K. B. Efetov, K. G. Wilson, L. W. Chen, L.-H. Tang, M. C. Cross, M. Kardar, N. Hatano, N. Hatano, Nadav M. Shnerb, O. Narayan, P. A. Lee, P. G. de Gennes, P. Grassberger, P. Grassberger, P. W. Brouwer, R. A. Fisher, R. Friedberg, R. Shankar, S. P. Obukhov, T. Halpin-Healy, T. Hwa, T. Saso, V. Privman   +48 more
core   +1 more source

Population structure of the deep sea hermit-crab Catapaguroides microps (Paguroidea, Anomura) in the Campos Basin, RJ, Brazil

Brazilian Journal of Oceanography, 2010
The population of Catapaguroides microps A. Milne-Edwards and Bouvier, 1892 in the Campos Basin was studied with an emphasis on its composition in the Northern and Southern parts of the Basin, the different gender sizes, sex ratio, and size class ...
Luana S. F. Lins, Tarso Costa
doaj   +1 more source

Recombinational exchange of M-fibril and T-pilus genes generates extensive cell surface diversity in the global group A Streptococcus population

mBio
Among genes present in all group A streptococci (GAS), those encoding M-fibril and T-pilus proteins display the highest levels of sequence diversity, giving rise to the two primary serological typing schemes historically used to define strain.
Debra E. Bessen, Bernard W. Beall, Andrew Hayes, Weihua Huang, Jeanne M. DiChiara, Srinivasan Velusamy, Hervé Tettelin, Keith A. Jolley, John T. Fallon, Sopio Chochua, Mosaed S. A. Alobaidallah, Charlie Higgs, Timothy C. Barnett, John T. Steemson, Thomas Proft, Mark R. Davies   +15 more
doaj   +1 more source

Relative growth, sexual maturity and handedness in the ghost shrimp Callichirus major (Decapoda: Callianassidae) from the southwestern Atlantic

Scientia Marina, 2019
Biometric studies provide valuable information about changes associated with the growth and sexual maturity of living organisms. We analysed sexual dimorphism, allometric growth, sexual maturity and handedness in the ghost shrimp Callichirus major at ...
Juliana Priscila Piva Rio, Patricio Hernáez, Marcelo Antonio Amaro Pinheiro   +2 more
doaj   +1 more source

Nonparametric estimation of the fragmentation kernel based on a PDE stationary distribution approximation [PDF]

, 2019
We consider a stochastic individual-based model in continuous time to describe a size-structured population for cell divisions. This model is motivated by the detection of cellular aging in biology. We address here the problem of nonparametric estimation
Hoang, Van Ha, Ngoc, Thanh Mai Pham, Rivoirard, Vincent, Tran, Viet Chi   +3 more
core   +2 more sources

Adherence to Protocol Recommendations for Children With Wilms Tumour in Two Consecutive Studies in the United Kingdom and Ireland—Does Variation Matter?

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background and Aims Wilms tumour (WT) has excellent event‐free and overall survival (OS). However, small differences exist between countries participating in the same international study. This led us to examine variation in adherence to protocol recommendations as a potential contributing factor.
Suzanne Tugnait, R. Al‐Saadi, A. Lopez‐Cortes, K. Dzhuma, M. Oostveen, J. Brok, S. Irtan, M. Weeks, J. Bate, S. Baker, R. Williams, M. Powis, D. Saunders, O. Olsen, T. Watson, S. Shelmerdine, S. Vaidya, L. Howell, C. Duncan, G. M. Vujanic, C. Stiller, G. P. Balchin, T. Chowdhury, K. Pritchard‐Jones   +23 more
wiley   +1 more source