scholarly journals Influence of limited food supply on growth and elemental composition (C, N, H) of Carcinus maenas (Decapoda) larvae, reared in the laboratory

1986 ◽  
Vol 31 ◽  
pp. 301-308 ◽  
Author(s):  
RR Dawirs
Keyword(s):  
Elemental Composition ◽  
Food Supply ◽  
Carcinus Maenas ◽  
Limited Food

scholarly journals Work of medical and nutritional healthcare facilities in Leningrad (January – April 1942)

2020 ◽  
pp. 116-126
Author(s):  
Elena Dmitrievna Tverdyukova
Keyword(s):  
Food Supply ◽  
Medical Personnel ◽  
Water Shortage ◽  
City Administration ◽  
Healthcare Facilities ◽  
Science Technology ◽  
Limited Food ◽  
The Subject ◽  
The City ◽  
Severe Shortage

The hierarchy of food supply in besieged Leningrad is one of the most polemical questions in historiography. The subject of this research is the measures taken by the city administration during the first winter of blockade (1941-1942) aimed at maintenance of vitality of Leningraders who were highly valued for economy of the city or regarded as creative elite of the city. The goal consists in clarification of facts on the work of medical and nutritional inpatient facilities intended for persons suffering from dystrophy, including municipal inpatient facility for emaciated workers of science, technology, art and executive personnel, located the Hotel Astoria. The work of medical and nutritional inpatient facilities in the period from January to April of 1942 had not previously become the subject of separate research for national or foreign historians. The conducted research demonstrate that the establishment of such healthcare facilities was the first attempt to organize food supply for citizens suffering from dystrophy. In the conditions of severe shortage of food resources, the city administration was able to help only a limited circle of people. Working in the extreme conditions with no electricity, water, shortage of qualified medical personnel, limited food funds, medical and nutritional inpatient facilities were could not fully solve the tasks imposed on them.

Larval Cohort Succession in Herring (Clupea harengus) and Capelin (Mallotus villosus)

1984 ◽  
Vol 41 (11) ◽  
pp. 1552-1564 ◽  
Author(s):  
Timothy C. Lambert
Keyword(s):  
Intraspecific Competition ◽  
Food Supply ◽  
Reproductive Strategy ◽  
Clupea Harengus ◽  
Mallotus Villosus ◽  
Larval Population ◽  
Capelin Mallotus Villosus ◽  
Limited Food ◽  
Similarities And Differences ◽  
Over Time

Complexities of herring (Clupea harengus) stocks previously alluded to are here explored in detail. Analysis of polymodal larval populations of both herring and capelin (Mallotus villosus) from a number of localities reveals the presence of a succession of larval cohorts over time. Separation of these cohorts in time and space is quantified and similarities and differences between species are indicated. The concept of "feeding range" can be applied in explanation of this cohort phenomenon. I suggest that this reproductive strategy serves to limit intraspecific competition and divides a limited food supply more equitably among the total larval population.

Fluctuations of year-class strength and recruitment in the western rock lobster Panulirus longipes (Milne-Edwards).

1975 ◽  
Vol 26 (3) ◽  
pp. 317 ◽  
Author(s):  
RG Chittleborough ◽  
BF Phillips
Keyword(s):  
Food Supply ◽  
Mass Rearing ◽  
Rock Lobster ◽  
Fishing Season ◽  
Density Dependent ◽  
Density Dependent Mortality ◽  
Class Strength ◽  
Limited Food ◽  
Dependent Mortality

Settlement of puerulus larvae on collectors composed of artificial seaweed and measurements of density of young juveniles on 'nursery' reefs show wide fluctuations in year-class strength, recent settlement from the spawning crop of 1973-74 being particularly high. Owing to restricted holding capacity of the shallow 'nursery' reefs (mainly due to limited food supply), density-dependent mortality reduces most year-class strengths to similar levels by the time juveniles reach 5 years of age. Particularly weak year-classes have been shown to be associated with poor catches from the coastal 'white' fishery at the opening of a fishing season. The applications of these findings to the management of the fishery are discussed. In theory, part of the wastage resulting from excess settlement of larvae in certain areas might be saved by transplanting to less crowded reefs or by mass-rearing in ponds, without diminishing recruitment from those left on the now overstocked reefs.

Sign in / Sign up

Export Citation Format

Share Document