Results 111 to 120 of about 11,636 (298)

Adult Sex Ratio as a Demographic Feedback Linking Mating Systems, Parental Care, and Evolution

open access: yesAdvanced Science, EarlyView.
Breeding systems are some of the most diverse social behavior, and our team is investigation the evolutionary causes of this diversity. This review summarises our research carried out at the University of Bath. We argue that demographic components of wild populations, especially the adult sex ratio, plays a key role driving breeding system variation ...
Tamás Székely, Oscar G. Miranda
wiley   +1 more source

Indebted Abbots: The Impact of Lordly Demand on the Late Medieval Rural Economy in Northeast Scotland

open access: yesJahrbuch für Wirtschaftsgeschichte
Scottish historiography often describes late medieval Scotland as experiencing socio-economic stagnation while at the same time witnessing a shift from feudal to post-feudal lordship. This paper reevaluates that interpretation through a case study of the
Weil Sebastian
doaj   +1 more source

Two Routes to Land: Genomic Underpinnings of Parallel Aerial Egg Deposition in Aquatic Old‐World Pila and New‐World Pomacea (Ampullariidae)

open access: yesAdvanced Science, EarlyView.
Comparative genomics of Gondwana‐diverged Pila and Pomacea reveals parallel evolution of aerial oviposition. Convergent chromosomal rearrangements reshape regulatory landscapes within topologically associating domains. Lineage‐specific gene family expansions and viral‐derived perivitelline proteins (PV1) underpin desiccation resistance.
Yufei Zhou   +10 more
wiley   +1 more source

The Contribution of Jaroslav Prokeš to Agrarian History

open access: yes, 2001
The article concernes the archivist and agrarian historiograph Jaroslav Prokeš (1895-1951) and his contribution to the agrarian history before the World War ...
Sekyrková, Milada
core  

La historia rural de la España oriental durante la Edad Moderna: un estado de la cuestión

open access: yesStudia Historica: Historia Moderna, 2009
RESUMEN: La historia rural de la España oriental durante la Edad Moderna: un estado de la cuestión. En este artículo se traza un estado de la cuestión de la historia agraria de los territorios de la antigua Corona de Aragón y la región murciana durante ...
Manuel ARDIT
doaj   +2 more sources

Large‐Scale Genomics Reveals Three‐Source Ancestry and Layered Adaptation to High Altitude in Tibetan Chickens

open access: yesAdvanced Science, EarlyView.
Whole‐genome analysis of 1,054 chickens reveals three ancestral sources (NWC, SYA, and SHF) with distinct temporal entry patterns into the Tibetan Plateau. Route‐specific selection scans, calibrated against a demographic null, suggest complementary functional enrichments—vascular homeostasis (NWC), calcium signaling and cardiac adaptation (SYA), and ...
Zongyi Zhao   +7 more
wiley   +1 more source

Viktor Petrovich Danilov, as a mirror of domestic agrarian historical science of the second half of the XX – early XXI century: on the 100th anniversary of the historian’s birth

open access: yesВестник Самарского университета: История, педагогика, филология
The article is devoted to the analysis of creative heritage of outstanding Russian agricultural historian Viktor Petrovich Danilov. It considers the most significant events in the scientific life of the historian, evaluates his contribution to the study ...
V. V. Kondrashin
doaj   +1 more source

The BnTFL1‐BnJAM3‐BnSWEETs Module Orchestrates Seed Storage Reserve Accumulation in Brassica napus

open access: yesAdvanced Science, EarlyView.
BnaC03.TFL1 and BnaA01.JAM3 form a complex that facilitates the transport of soluble sugars from the seed coat to the embryo by directly activating the expression of BnSWEETs. Furthermore, BnaC03.TFL1 and BnaA01.JAM3 work cooperatively to promote soluble sugar and oil production while suppressing protein deposition.
Jianjun Wang   +8 more
wiley   +1 more source

A Study on Rural labor Markets, Rural Nonfarm Enterprises and Agrarian Reform in the Philippines [PDF]

open access: yes
The Philippine agriculture sector’s limited capacity to absorb the existing rural labor force has led to the demand for nonfarm employment in the rural labor market.
Sanchez-Robielos, Maria Teresa
core  

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