Results 71 to 80 of about 1,027,081 (211)

A guide to nestling development and aging in altricial passerines [PDF]

, 2007
Nestling growth and development studies have been a topic of interest for a greater part of the last century (Sutton 1935, Walkinshaw 1948) and continue to be of interest today. This is not surprising since studies on nestling growth can provide a wealth
Gardali, Thomas, Geupel, Geoffrey R., Gouse, Paula J., Jones, Stephanie L., Jongsomjit, Dennis   +4 more
core   +1 more source

Survival of the Richest: The Malthusian Mechanism in Pre-Industrial England [PDF]

Fundamental to the Malthusian model of pre-industrial society is the assumption that higher income increased reproductive success. Despite the seemingly inescapable logic of this model, the empirical support for this vital assumption in the preindustrial
Gillian Hamilton, Gregory Clark
core  

Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain [PDF]

, 2018
Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY
Bombieri, Giulia, Cañedo, D., Delgado Sánchez, María Mar, Díaz García, J., Fernández Otero, M., Penteriani Dragone, Vincenzo, Peón Torre, Paloma, Sánchez Corominas, T., Vázquez García, P., Vázquez, V. M., Zarzo Arias, Alejandra   +10 more
core   +2 more sources

Gonad development and reproduction of the ballyhoo half beak, Hemiramphus brasiliensis from the coastal waters of Rio Grande do Norte, Brazil

Brazilian Journal of Biology
The gonad development and reproductive aspects of Hemiramphus brasiliensis from the coastal waters of Rio Grande do Norte, Brazil were verified. This paper presents data on the length-weight relationship, sex ratio, length at first sexual maturity, gonad
MR. Oliveira, NB. Silva, ME. Yamamoto, S. Chellappa   +3 more
doaj   +1 more source

The effects of graded levels of calorie restriction : II. Impact of short term calorie and protein restriction on circulating hormone levels, glucose homeostasis and oxidative stress in male C57BL/6 mice [PDF]

, 2015
This work was supported by BBSRC BB009953/1 awarded to JRS and SEM. PK and CD were funded by the Erasmus exchange programme. JRS, SEM, DD, CG, LC, JJDH, YW, DELP, DL and AD are members of the BBSRC China Partnership Award, BB/J020028/1.Peer ...
Chen, Luonan, Delville, Camille, Derous, Davina, Douglas, Alex, Green, Cara Leanne, Han, Jackie J.D., Hurst, Jane, Konstantopedos, Penelope, Lusseau, David, Mitchell, Sharon E., Promislow, Daniel E. L., Speakman, John R., Wang, Yingchun   +12 more
core   +2 more sources

Population dynamics of a freshwater amphipod from South America (Crustacea, Amphipoda, Hyalellidae)

Nauplius
This study aimed to characterize the population dynamics of Hyalella bonariensis Bond-Buckup, Araujo & Santos, 2008 from headwater spring in a rural area of state of Rio Grande do Sul, Brazil.
Daniela da Silva Castiglioni, Aline Vasum Ozga, Stella Gomes Rodrigues, Alessandra Angélica de Pádua Bueno   +3 more
doaj   +1 more source

Variability in spawning frequency and reproductive development of the narrow-barred Spanish mackerel (Scomberomorus commerson) along the west coast of Australia [PDF]

, 2004
The narrow-barred Spanish mackerel (Scomberomorus commerson) is widespread throughout the Indo-West Pacific region. This study describes the reproductive biology of S.
Gaughan, Daniel J., Lewis, Paul D., Mackie, Michael C., Newman, Stephen J.   +3 more
core  

Comparing and contrasting development and reproductive strategies in the pupal hyperparasitoids Lysibia nana and Gelis agilis (Hymenoptera: Ichneumonidae) [PDF]

, 2007
In most animals, the optimal phenotype is determined by trade-offs in life-history traits. Here, I compare development and reproductive strategies in two species of solitary secondary hyperparasitoids, Lysibia nana and Gelis agilis, attacking pre-pupae ...
Harvey, J.A.
core   +3 more sources

The effect of Holstein-Friesian genotype and feeding system on selected performance parameters of dairy cows on grass-based systems of milk production in Ireland [PDF]

, 2006
End of project reportThe overall objective of this project was to assess, the effect of strain of Holstein-Friesian dairy cow, pasture-based feed system (FS) and their interaction on animal performance in terms of milk productivity and lactation profile,
Berry, Donagh, Buckley, James F., Dillon, Pat, Horan, Brendan, Linnane, M., McCarthy, S., Mee, John F, O’Connor, Paula M., Shalloo, Laurence   +8 more
core  

Reproductive isolation between two populations of Aglaoctenus lagotis , a funnel-web wolf spider [PDF]

, 2015
Aglaoctenus lagotis (Lycosidae: Sosippinae) is a spider that, in contrast to the predominant wandering habit of the family, constructs funnel webs.
Aisenberg, Aisenberg, Alfredo V. Peretti, Ayoub, Barlow, Barluenga, Barth, Barthel, Baruffaldi, Baruffaldi, Begon, Brady, Butlin, Candolin, Capocasale, Chiarle, Claridge, Claridge, Clark, Costa, Costa-Schmidt, Coyne, Coyne, Crews, De Busschere, De Witt, Eberhard, Elias, Fernando G. Costa, Foelix, Futuyma, Gabirot, Gabirot, Ghalambor, Gillespie, González, González, González-Zuarth, Hammer, Hebets, Hebets, Kitano, Kronestedt, Kuppernagel, Leonard, Macarena González, Macías-Ordóñez, Marchiori, Mayr, Michel, Miller, Moraiti, Morrone, Nossil, Oh, Oxford, Piacentini, Pigliucci, Pillay, Pröhl, Puzin, Reiskind, Roberts, Roberts, Rypstra, Saarikettu, Santos, Santos, Singer, Stefani, Stefani, Stefani, Stratton, Taylor, The Marie Curie SPECIATION Network, Tregenza, Töpfer-Hofmann, Uetz, Uetz, Veen, Velásquez, Verrell, Verrell, Verzijden, West-Eberhard, West-Eberhard, Wyman   +86 more
core   +1 more source