scholarly journals Reproductive phenology across the lunar cycle: parental decisions, offspring responses, and consequences for reef fish

Ecology ◽  
2020 ◽  
Vol 101 (8) ◽  
Author(s):  
Jeffrey S. Shima ◽  
Craig W. Osenberg ◽  
Suzanne H. Alonzo ◽  
Erik G. Noonburg ◽  
Pauline Mitterwallner ◽  
...  
Keyword(s):  
Reef Fish ◽  
Lunar Cycle ◽  
Reproductive Phenology ◽  
Parental Decisions

scholarly journals Reproductive phenology across the lunar cycle: parental decisions, offspring responses, and consequences for reef fish

2020 ◽  
Author(s):  
Jeffrey Shima ◽  
CW Osenberg ◽  
SH Alonzo ◽  
EG Noonburg ◽  
P Mitterwallner ◽  
...  
Keyword(s):  
Reef Fish ◽  
Egg Production ◽  
Life History Theory ◽  
Environmental Changes ◽  
Full Moon ◽  
Lunar Cycle ◽  
Adaptive Plasticity ◽  
Birth Date ◽  
Reproductive Phenology ◽  
New Moon

© 2020 by the Ecological Society of America Most organisms reproduce in a dynamic environment, and life-history theory predicts that this can favor the evolution of strategies that capitalize on good times and avoid bad times. When offspring experience these environmental changes, fitness can depend strongly upon environmental conditions at birth and at later life stages. Consequently, fitness will be influenced by the reproductive decisions of parents (i.e., birth date effects) and developmental decisions (e.g., adaptive plasticity) of their offspring. We explored the consequences of these decisions using a highly iteroparous coral reef fish (the sixbar wrasse, Thalassoma hardwicke) and in a system where both parental and offspring environments vary with the lunar cycle. We tested the hypotheses that (1) reproductive patterns and offspring survival vary across the lunar cycle and (2) offspring exhibit adaptive plasticity in development time. We evaluated temporal variation in egg production from February to June 2017, and corresponding larval developmental histories (inferred from otolith microstructure) of successful settlers and surviving juveniles that were spawned during that same period. We documented lunar-cyclic variation in egg production (most eggs were spawned at the new moon). This pattern was at odds with the distribution of birth dates of settlers and surviving juveniles—most individuals that successfully survived to settlement and older stages were born during the full moon. Consequently, the probability of survival across the larval stage was greatest for offspring born close to the full moon, when egg production was at its lowest. Offspring also exhibited plasticity in developmental duration, adjusting their age at settlement to settle during darker portions of the lunar cycle than expected given their birth date. Offspring born near the new moon tended to be older and larger at settlement, and these traits conveyed a strong fitness advantage (i.e., a carryover effect) through to adulthood. We speculate that these effects (1) are shaped by a dynamic landscape of risk and reward determined by moonlight, which differentially influences adults and offspring, and (2) can explain the evolution of extreme iteroparity in sixbars.

scholarly journals Reproductive phenology across the lunar cycle: parental decisions, offspring responses, and consequences for reef fish

2020 ◽  
Author(s):  
Jeffrey Shima ◽  
CW Osenberg ◽  
SH Alonzo ◽  
EG Noonburg ◽  
P Mitterwallner ◽  
...  
Keyword(s):  
Reef Fish ◽  
Egg Production ◽  
Life History Theory ◽  
Environmental Changes ◽  
Full Moon ◽  
Lunar Cycle ◽  
Adaptive Plasticity ◽  
Birth Date ◽  
Reproductive Phenology ◽  
New Moon

© 2020 by the Ecological Society of America Most organisms reproduce in a dynamic environment, and life-history theory predicts that this can favor the evolution of strategies that capitalize on good times and avoid bad times. When offspring experience these environmental changes, fitness can depend strongly upon environmental conditions at birth and at later life stages. Consequently, fitness will be influenced by the reproductive decisions of parents (i.e., birth date effects) and developmental decisions (e.g., adaptive plasticity) of their offspring. We explored the consequences of these decisions using a highly iteroparous coral reef fish (the sixbar wrasse, Thalassoma hardwicke) and in a system where both parental and offspring environments vary with the lunar cycle. We tested the hypotheses that (1) reproductive patterns and offspring survival vary across the lunar cycle and (2) offspring exhibit adaptive plasticity in development time. We evaluated temporal variation in egg production from February to June 2017, and corresponding larval developmental histories (inferred from otolith microstructure) of successful settlers and surviving juveniles that were spawned during that same period. We documented lunar-cyclic variation in egg production (most eggs were spawned at the new moon). This pattern was at odds with the distribution of birth dates of settlers and surviving juveniles—most individuals that successfully survived to settlement and older stages were born during the full moon. Consequently, the probability of survival across the larval stage was greatest for offspring born close to the full moon, when egg production was at its lowest. Offspring also exhibited plasticity in developmental duration, adjusting their age at settlement to settle during darker portions of the lunar cycle than expected given their birth date. Offspring born near the new moon tended to be older and larger at settlement, and these traits conveyed a strong fitness advantage (i.e., a carryover effect) through to adulthood. We speculate that these effects (1) are shaped by a dynamic landscape of risk and reward determined by moonlight, which differentially influences adults and offspring, and (2) can explain the evolution of extreme iteroparity in sixbars.

scholarly journals Born at the right time? A conceptual framework linking reproduction, development, and settlement in reef fish

2020 ◽  
Author(s):  
Jeffrey Shima ◽  
EG Noonburg ◽  
SE Swearer ◽  
SH Alonzo ◽  
CW Osenberg
Keyword(s):  
Larval Development ◽  
Reef Fish ◽  
Full Moon ◽  
Developmental Trajectories ◽  
Larval Settlement ◽  
Lunar Cycle ◽  
Adaptive Plasticity ◽  
Ecological Society ◽  
Thalassoma Hardwicke ◽  
The Right

© 2017 by the Ecological Society of America Parents are expected to make decisions about reproductive timing and investment that maximize their own fitness, even if this does not maximize the fitness of each individual offspring. When offspring survival is uncertain, selection typically favors iteroparity, which means that offspring born at some times can be disadvantaged, while others get lucky. The eventual fate of offspring may be further modified by their own decisions. Are fates of offspring set by birthdates (i.e., determined by parents), or can offspring improve upon the cards they've been dealt? If so, do we see adaptive plasticity in the developmental timing of offspring? We evaluate these questions for a coral reef fish (the sixbar wrasse, Thalassoma hardwicke) that is characterized by extreme iteroparity and flexible larval development. Specifically, we monitored larval settlement to 192 small reefs over 11 lunar months and found that most fish settled during new moons of a lunar cycle (consistent with preferential settlement on dark nights). Settlement was significantly lower than expected by chance during the full moon and last quarter of the lunar cycle (consistent with avoidance of bright nights). Survival after settlement was greatest for fish that settled during times of decreasing lunar illumination (from last quarter to new moon). Fish that settled on the last quarter of the lunar cycle were ~10% larger than fish that settled during other periods, suggesting larvae delay settlement to avoid the full moon. These results are consistent with a numerical model that predicts plasticity in larval development time that enables avoidance of settlement during bright periods. Collectively, our results suggest that fish with inauspicious birthdates may alter their developmental trajectories to settle at better times. We speculate that such interactions between parent and offspring strategies may reinforce the evolution of extreme iteroparity and drive population dynamics, by increasing the survival of offspring born at the “wrong” time by allowing them to avoid the riskiest times of settlement.

scholarly journals Born at the right time? A conceptual framework linking reproduction, development, and settlement in reef fish

2020 ◽  
Author(s):  
Jeffrey Shima ◽  
EG Noonburg ◽  
SE Swearer ◽  
SH Alonzo ◽  
CW Osenberg
Keyword(s):  
Larval Development ◽  
Reef Fish ◽  
Full Moon ◽  
Developmental Trajectories ◽  
Larval Settlement ◽  
Lunar Cycle ◽  
Adaptive Plasticity ◽  
Ecological Society ◽  
Thalassoma Hardwicke ◽  
The Right

© 2017 by the Ecological Society of America Parents are expected to make decisions about reproductive timing and investment that maximize their own fitness, even if this does not maximize the fitness of each individual offspring. When offspring survival is uncertain, selection typically favors iteroparity, which means that offspring born at some times can be disadvantaged, while others get lucky. The eventual fate of offspring may be further modified by their own decisions. Are fates of offspring set by birthdates (i.e., determined by parents), or can offspring improve upon the cards they've been dealt? If so, do we see adaptive plasticity in the developmental timing of offspring? We evaluate these questions for a coral reef fish (the sixbar wrasse, Thalassoma hardwicke) that is characterized by extreme iteroparity and flexible larval development. Specifically, we monitored larval settlement to 192 small reefs over 11 lunar months and found that most fish settled during new moons of a lunar cycle (consistent with preferential settlement on dark nights). Settlement was significantly lower than expected by chance during the full moon and last quarter of the lunar cycle (consistent with avoidance of bright nights). Survival after settlement was greatest for fish that settled during times of decreasing lunar illumination (from last quarter to new moon). Fish that settled on the last quarter of the lunar cycle were ~10% larger than fish that settled during other periods, suggesting larvae delay settlement to avoid the full moon. These results are consistent with a numerical model that predicts plasticity in larval development time that enables avoidance of settlement during bright periods. Collectively, our results suggest that fish with inauspicious birthdates may alter their developmental trajectories to settle at better times. We speculate that such interactions between parent and offspring strategies may reinforce the evolution of extreme iteroparity and drive population dynamics, by increasing the survival of offspring born at the “wrong” time by allowing them to avoid the riskiest times of settlement.

Does the Lunar Cycle Affect Reef Fish Catch Rates?

2017 ◽  
Vol 37 (3) ◽  
pp. 536-549 ◽  
Author(s):  
J. R. Pulver
Keyword(s):  
Reef Fish ◽  
Lunar Cycle ◽  
Fish Catch ◽  
Catch Rates

Physiological effects of the lunar cycle on the spawning of a coral reef fish, Abudefduf Vaigiensis: in vivo and in vitro trait

Coral Reefs ◽  
2021 ◽  
Author(s):  
Asma Golmoradizadeh ◽  
Ahmad Noori ◽  
Bagher Mojazi Amiri
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Lunar Cycle ◽  
Physiological Effects

The lunar cycle: a cue for amphibian reproductive phenology?

2009 ◽  
Vol 78 (2) ◽  
pp. 349-357 ◽  
Author(s):  
Rachel A. Grant ◽  
Elizabeth A. Chadwick ◽  
Tim Halliday
Keyword(s):  
Lunar Cycle ◽  
Reproductive Phenology

Microsatellite markers for coral trout (Plectropomus laevis) and red throat emperor (Lethrinus miniatus) and their utility in other species of reef fish

2000 ◽  
Vol 9 (11) ◽  
pp. 1929-1931 ◽  
Author(s):  
Lynne Van Herwerden ◽  
John Benzie ◽  
Lesa Peplow ◽  
Campbell Davies
Keyword(s):  
Microsatellite Markers ◽  
Reef Fish ◽  
Coral Trout

Evolutionary consequences of fertilization mode for reproductive phenology and asynchrony

2015 ◽  
Vol 537 ◽  
pp. 23-38 ◽  
Author(s):  
C Olito ◽  
M Bode ◽  
D Marshall
Keyword(s):  
Reproductive Phenology ◽  
Evolutionary Consequences

Combination of trophic group habitat preferences determines coral reef fish assemblages

2018 ◽  
Vol 586 ◽  
pp. 141-154 ◽  
Author(s):  
S Suzuki ◽  
T Kawai ◽  
T Sakamaki
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Fish Assemblages ◽  
Habitat Preferences ◽  
Trophic Group
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