Growth and reproduction of the mosquitofish,Gambusia affinis, in relation to temperature and ration level: consequences for life history

1988 ◽  
Vol 21 (1) ◽  
pp. 45-57 ◽  
Author(s):  
Bruce Vondracek ◽  
Wayne A. Wurtsbaugh ◽  
Joseph J. Cech
Keyword(s):  
Life History ◽  
Gambusia Affinis ◽  
Ration Level ◽  
Growth And Reproduction

Growth and reproduction of the red alga Rhodomela larix

1986 ◽  
Vol 64 (7) ◽  
pp. 1499-1506 ◽  
Author(s):  
Carla D'Antonio
Keyword(s):  
Life History ◽  
Red Alga ◽  
Oregon Coast ◽  
Perennial Plants ◽  
History Of ◽  
Lower Site ◽  
Intertidal Site ◽  
Observation Period ◽  
Growth And Reproduction

Components of the growth and life history of the red alga Rhodomela larix (Turner) C. Agardh were studied during an 18-month period at a high intertidal and a low intertidal site on the central Oregon coast. Growth was measured by following (i) individually marked upright axes, (ii) clumps of axes thought to represent individual plants, and (iii) large patches of R. larix. Variation in size and growth was common among axes, and portions of some axes were clearly perennial. Plants grew most rapidly in the spring and summer (up to 1.2 mm/day) with a large amount of variation occurring between and within zones and among seasons. Overall, plants at the higher site were shorter and had fewer branches during most of the year than plants at the lower site. Gametophytes were more common in the higher site, while tetrasporophytes predominated at both sites. Reproductive axes were present throughout the observation period, although little recruitment of sexual propagules was seen, implying that populations may be maintained by vegetative perennation of individual plants.

scholarly journals Effects of Ration Levels on Growth and Reproduction from Larvae to First-Time Spawning in the Female Gambusia affinis

2015 ◽  
Vol 16 (12) ◽  
pp. 5604-5617 ◽  
Author(s):  
Zhiming Zhu ◽  
Xiangling Zeng ◽  
Xiaotao Lin ◽  
Zhongneng Xu ◽  
Jun Sun
Keyword(s):  
Gambusia Affinis ◽  
First Time ◽  
Growth And Reproduction

Individual Growth and Reproduction

2019 ◽  
pp. 38-56
Author(s):  
Ken H. Andersen
Keyword(s):  
Life History ◽  
Growth Model ◽  
Life Histories ◽  
Maximum Size ◽  
Individual Growth ◽  
Energy Budgets ◽  
Asymptotic Size ◽  
The Individual ◽  
Growth And Reproduction

This chapter develops descriptions of how individuals grow and reproduce. More specifically, the chapter seeks to determine the growth and reproduction rates from the consumption rate, by developing an energy budget of the individual as a function of size. To that end, the chapter addresses the question of how an individual makes use of the energy acquired from consumption. It sets up the energy budgets of individuals by formulating the growth model using so-called life-history invariants, which are parameters that do not vary systematically between species. While the formulation of the growth model in terms of life-history invariants is largely successful, there is in particular one parameter that is not invariant between life histories: the asymptotic size (maximum size) of individuals in the population. This parameter plays the role of a master trait that characterizes most of the variation between life histories.

scholarly journals Towards a general life-history model of the superorganism: predicting the survival, growth and reproduction of ant societies

2012 ◽  
Vol 8 (6) ◽  
pp. 1059-1062 ◽  
Author(s):  
Jonathan Z. Shik ◽  
Chen Hou ◽  
Adam Kay ◽  
Michael Kaspari ◽  
James F. Gillooly
Keyword(s):  
Life History ◽  
Terrestrial Ecosystems ◽  
The Body ◽  
Ant Colonies ◽  
Insect Societies ◽  
Model Predictions ◽  
Body Sizes ◽  
Survival And Reproduction ◽  
Growth And Reproduction ◽  
Colony Level

Social insect societies dominate many terrestrial ecosystems across the planet. Colony members cooperate to capture and use resources to maximize survival and reproduction. Yet, when compared with solitary organisms, we understand relatively little about the factors responsible for differences in the rates of survival, growth and reproduction among colonies. To explain these differences, we present a mathematical model that predicts these three rates for ant colonies based on the body sizes and metabolic rates of colony members. Specifically, the model predicts that smaller colonies tend to use more energy per gram of biomass, live faster and die younger. Model predictions are supported with data from whole colonies for a diversity of species, with much of the variation in colony-level life history explained based on physiological traits of individual ants. The theory and data presented here provide a first step towards a more general theory of colony life history that applies across species and environments.

Life History and Foods of Gambusia affinis in Two Waterways of Southwestern Louisiana

1992 ◽  
Vol 37 (2) ◽  
pp. 157 ◽  
Author(s):  
Gwendolyn L. Daniels ◽  
James D. Felley
Keyword(s):  
Life History ◽  
Gambusia Affinis

scholarly journals Personality-dependent dispersal cancelled under predation risk

2013 ◽  
Vol 280 (1773) ◽  
pp. 20132349 ◽  
Author(s):  
Julien Cote ◽  
Sean Fogarty ◽  
Blaise Tymen ◽  
Andrew Sih ◽  
Tomas Brodin
Keyword(s):  
Life History ◽  
Predation Risk ◽  
Personality Types ◽  
Gambusia Affinis ◽  
Life History Trait ◽  
Ecological Processes ◽  
Behavioural Types

Dispersal is a fundamental life-history trait for many ecological processes. Recent studies suggest that dispersers, in comparison to residents, display various phenotypic specializations increasing their dispersal inclination or success. Among them, dispersers are believed to be consistently more bold, exploratory, asocial or aggressive than residents. These links between behavioural types and dispersal should vary with the cause of dispersal. However, with the exception of one study, personality-dependent dispersal has not been studied in contrasting environments. Here, we used mosquitofish ( Gambusia affinis ) to test whether personality-dependent dispersal varies with predation risk, a factor that should induce boldness or sociability-dependent dispersal. Corroborating previous studies, we found that dispersing mosquitofish are less social than non-dispersing fish when there was no predation risk. However, personality-dependent dispersal is negated under predation risk, dispersers having similar personality types to residents. Our results suggest that adaptive dispersal decisions could commonly depend on interactions between phenotypes and ecological contexts.

scholarly journals Age, growth, and reproduction of Southern Kingfish (Menticirrhus americanus): a multivariate comparison with life history patterns in other sciaenids

2014 ◽  
Vol 112 (2-3) ◽  
pp. 178-197 ◽  
Author(s):  
Samuel D. Clardy ◽  
Nancy J. Brown-Peterson ◽  
Mark S. Peterson ◽  
Robert T. Leaf
Keyword(s):  
Life History ◽  
Life History Patterns ◽  
Growth And Reproduction
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