Predator-Mediated Plasticity in Morphology, Life History, and Behavior of Daphnia: The Uncoupling of Responses

Boersma,; Spaak,; Meester, De

doi:10.2307/2463487

Cited by 156 publications

(267 citation statements)

References 3 publications

Supporting

Mentioning

252

Contrasting

Unclassified

Order By: Relevance

“…This is supported by Daphnia field sample studies finding high levels of males in a pond or lake 2 weeks before high levels of ephippial females (De Meester & Vanoverbeke, 1999;Spaak et al, 2004). In addition to crowding, stimuli reported to alter Daphnia offspring sex ratios include photoperiod (Ferrari & Hebert, 1982, Korpelainen, 1986, Zhang & Baer, 2000, temperature (Korpelainen, 1986), food level (Ferrari & Hebert, 1982;Zhang & Baer, 2000), and exposure to predatory fish (Boersma et al, 1998).…”

Section: Offspring Sex Ratiosmentioning

confidence: 79%

Inter-genotype variation in reproductive response to crowding among Daphnia pulex

Fitzsimmons

Innes

2006

Hydrobiologia

View full text Add to dashboard Cite

Crowding is known to have a major influence on reproduction in the freshwater microcrustacean Daphnia pulex. We analyzed reproductive output of six different D. pulex genotypes under two different density regimes in the laboratory. Four of these genotypes reproduce via obligate parthenogenesis, allowing thorough analysis of the life history strategies of some asexual lines. Among 30,109 neonate offspring and 1041 resting egg ephippia collected, several trends were evident. Crowding induced increased resting egg production and reduced neonate offspring production among all genotypes. Offspring sex ratios grew more male-biased with maternal age. The extent, but not direction, of each of these trends varied among genotypes. Offspring sex ratios, and the very direction in which they changed in response to crowding, differed significantly among genotypes with some genotypes producing more and others fewer males in response to crowding. Obligately parthenogenetic genotypes seemed to respond to the crowding stimulus in similar ways as the facultatively parthenogenetic genotypes, as expected from the sexual origins of their genomes. The inter-genotype variation in life-history traits observed in this and other investigations calls into question the common practice of extrapolating results from a single Daphnia genotype to an entire species. Our findings are considered in the context of other research in the field of environmental influences on Daphnia reproduction with a review of representative literature.

show abstract

Section: Offspring Sex Ratiosmentioning

confidence: 79%

Inter-genotype variation in reproductive response to crowding among Daphnia pulex

Fitzsimmons

Innes

2006

Hydrobiologia

View full text Add to dashboard Cite

show abstract

“…The observed pattern of shifts in D. magna life history in our study was consistent with previously published data (Riessen, 1999): individuals only directly exposed to fish presence carried their eggs in the brood chamber for a shorter time (THE; Mikulski et al, 2004), released neonates into the external environment faster (TRN; Mikulski, 2001), released those neonates earlier (AFR; e.g., Stibor, 1992), and lived shorter (Dawidowicz et al, 2010) than unexposed individuals. Lack of a statistically significant direct influence of the presence of fish on the SFR and the N-Ne or S-Nes produced, respectively, earlier documented for various clones from Binnensee, can be explained in the light of known interclonal variability in the response to environmental stress (e.g., Boersma et al, 1998;Bernatowicz & Pijanowska, 2011). In the study of Boersma et al, the decrease of SFR in response to fish kairomone has been observed in ca.…”

Section: Discussionmentioning

confidence: 88%

The contribution of individual and maternal experience in shaping Daphnia life history

Mikulski

Pijanowska

2016

Hydrobiologia

View full text Add to dashboard Cite

Maternal effects are among the key mechanisms generating phenotypic diversity in natural populations, but no general explanation has been found for why maternal effects are involved in shaping some, but not all, phenotypic traits. We investigated experimentally the relative importance of maternal and own risk perception in multi-trait response of a small planktonic crustacean Daphnia magna to the presence of fish. It appears that maternal effect is involved in shaping some key traits relating to adaptive changes in life history, such as duration time of egg holding in the brood chambers, age and size of mothers at first reproduction, and the number of firstclutch neonates. Other life history parameters, such as duration time of the release of the first clutch of neonates from the brood chamber and the size of neonates, were determined upon direct exposure to environmental risk. The relative contribution of maternal and own perception of risk in shaping individual phenotype depends on the time needed to express particular life history trait. Long onset time increases the importance of maternal risk perception in the shaping of offspring phenotype.

show abstract

“…A heuristic failure occurs when an organism initiates a particular developmental trajectory which turns out to be 'wrong'. They refer to the type of water flea (Daphnia) discussed in Boersma et al (1998) and Gluckman et al (2005). Daphnia grows a helmet-like shell structure and a tail spike in the presence of predators and ordinarily does not without predators.…”

Section: The Welfare Objectionmentioning

confidence: 99%

Stranger in a strange land: an optimal-environments account of evolutionary mismatch

Morris

2018

Synthese

View full text Add to dashboard Cite

In evolutionary medicine, researchers characterize some outcomes as evolutionary mismatch. Mismatch problems arise as the result of organisms living in environments to which they are poorly adapted, typically as the result of some rapid environmental change. Depression, anxiety, obesity, myopia, insomnia, breast cancer, dental problems, and numerous other negative health outcomes have all been characterized as mismatch problems. The exact nature of evolutionary mismatch itself is unclear, however. This leads to a lack of clarity about the sorts of problems that evolutionary mismatch can actually explain. Resolving this challenge is important not only for the evolutionary health literature, but also because the notion of evolutionary mismatch involves central concepts in evolutionary biology: fitness, evolution in changing environments, and so forth.In this paper, I examine two characterizations of mismatch currently in the literature. I propose that we conceptualize mismatch as a relation between an optimal environment and an actual environment. Given an organism and its particular physiology, the optimal environment is the environment in which the organism's fitness is maximized: in other words, the optimal environment is that in which the organism's fitness is as high as it can possibly be. The actual environment is the environment in which the organism actually finds itself. To the extent that there is a discordance between the organism's actual and optimal environments, there is an evolutionary mismatch. In the paper, I show that this account of mismatch gives us the right result when other accounts fail, and provides useful targets for investigation.

show abstract

Predator-Mediated Plasticity in Morphology, Life History, and Behavior of Daphnia: The Uncoupling of Responses

Cited by 156 publications

References 3 publications

Inter-genotype variation in reproductive response to crowding among Daphnia pulex

Inter-genotype variation in reproductive response to crowding among Daphnia pulex

The contribution of individual and maternal experience in shaping Daphnia life history

Stranger in a strange land: an optimal-environments account of evolutionary mismatch

Contact Info

Product

Resources

About