Effects of intraspecific variation in reproductive traits, pectoral fin use and burst swimming on metabolic rates and swimming performance: a study on the Trinidadian guppy (<i>Poecilia reticulata</i>Peters)

Svendsen, Jon Christian; Banet, Amanda I.; Christensen, Rune Haubo Bojesen; Steffensen, John F.; Aarestrup, Kim

doi:10.1242/jeb.083089

Cited by 31 publications

(53 citation statements)

References 98 publications

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“…In fry rearing trial, Godavari and Krishna groups exhibited no significant difference between them, whereas both the populations exhibited significantly different performance as compared to Narmada population. Various studies have reported on the intra-specific variation in different reproductive parameters in fishes viz., Poecilia reticulata (Peters, 1860) (Svendsen et al, 2013); Lacerta vivipara (Von Jacquin, 1787) (Bauwens and Verheyen, 1987) and in several European freshwater fishes (Blanck et al, 2007). The present findings in magur from Indian rivers indicate variations in reproductive parameters between populations of same species.…”

Section: Resultsmentioning

confidence: 49%

Comparison of reproductive performance of Clarias batrachus (Linnaeus, 1758) collected from three Indian rivers

Ravi¹,

Dube²,

Babu³

et al. 2016

Indian J. Fish.

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A study was conducted to compare the reproductive performance of Clarias batrachus (Linnaeus, 1758) collected from three different rivers viz., Krishna in Andhra Pradesh, Godavari in Maharashtra and Narmada in Madhya Pradesh. Twenty pairs of brooders from each location were randomly selected and induced with pituitary extract (P) and ovaprim (O). Reproductive performance in terms of stripping percentage, pseudo gonado-somatic index, spawning, fecundity, fertilisation rate, hatching rate, and survival rate as well as fry rearing performance in terms of percentage weight gain, specific growth rate (SGR) and survival rate were monitored. Brooders collected from Godavari exhibited significantly (p<0.05) higher values for all the reproductive performances indicators compared to brooders collected from Narmada and Krishna rivers. But fishes collected from Krishna River exhibited significantly higher (p<0.05) fry survival. Fry produced from Godavari brooders attained highest (p<0.05) percentage weight gain (1085.88±37.41), SGR (17.61±0.19) and fry survival rate (43.67±1.45) in comparison to Narmada. Results clearly indicated that reproductive performance varied significantly among the brooders collected from the three different rivers.

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Section: Resultsmentioning

confidence: 49%

Comparison of reproductive performance of Clarias batrachus (Linnaeus, 1758) collected from three Indian rivers

Ravi¹,

Dube²,

Babu³

et al. 2016

Indian J. Fish.

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“…The flush pump was controlled by AutoResp software (version 2.1.3; Loligo Systems, Tjele, Denmark) that also calculated the M O 2 in the measurement phase using the oxygen partial pressure and standard equations [42], [43]. Preliminary testing demonstrated that the duration of the measurement phase (3 min) ensured that the coefficient of determination (r 2 ) associated with each M O 2 measurement was always>0.95, similar to previous studies [44]. Corrections of background respiration (i.e.…”

Section: Methodsmentioning

confidence: 52%

Evidence of Circadian Rhythm, Oxygen Regulation Capacity, Metabolic Repeatability and Positive Correlations between Forced and Spontaneous Maximal Metabolic Rates in Lake Sturgeon Acipenser fulvescens

et al. 2014

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Animal metabolic rate is variable and may be affected by endogenous and exogenous factors, but such relationships remain poorly understood in many primitive fishes, including members of the family Acipenseridae (sturgeons). Using juvenile lake sturgeon (Acipenser fulvescens), the objective of this study was to test four hypotheses: 1) A. fulvescens exhibits a circadian rhythm influencing metabolic rate and behaviour; 2) A. fulvescens has the capacity to regulate metabolic rate when exposed to environmental hypoxia; 3) measurements of forced maximum metabolic rate (MMRF) are repeatable in individual fish; and 4) MMRF correlates positively with spontaneous maximum metabolic rate (MMRS). Metabolic rates were measured using intermittent flow respirometry, and a standard chase protocol was employed to elicit MMRF. Trials lasting 24 h were used to measure standard metabolic rate (SMR) and MMRS. Repeatability and correlations between MMRF and MMRS were analyzed using residual body mass corrected values. Results revealed that A. fulvescens exhibit a circadian rhythm in metabolic rate, with metabolism peaking at dawn. SMR was unaffected by hypoxia (30% air saturation (O2sat)), demonstrating oxygen regulation. In contrast, MMRF was affected by hypoxia and decreased across the range from 100% O2sat to 70% O2sat. MMRF was repeatable in individual fish, and MMRF correlated positively with MMRS, but the relationships between MMRF and MMRS were only revealed in fish exposed to hypoxia or 24 h constant light (i.e. environmental stressor). Our study provides evidence that the physiology of A. fulvescens is influenced by a circadian rhythm and suggests that A. fulvescens is an oxygen regulator, like most teleost fish. Finally, metabolic repeatability and positive correlations between MMRF and MMRS support the conjecture that MMRF represents a measure of organism performance that could be a target of natural selection.

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“…Previous work in guppies has demonstrated that intraspecific variation in use of the pectoral fins during swimming is associated with increased energy expenditure at a given speed (Svendsen et al . ). Our results suggest that the presence of male harassment within a guppy population can alter the degree of variation in swimming mechanics present among females, thus decreasing their costs of locomotion.…”

Section: Discussionmentioning

confidence: 97%

“…The actual energetic cost of pectoral fin movements during subcarangiform swimming is relatively small (Gerry & Ellerby ), but the pectoral fins are used to stabilize the fish during forward movement, and excessive fin movement is probably a general indicator of suboptimal and apparently inefficient swimming mechanics (Svendsen et al . ). We found no evidence for plasticity in the capacity for aerobic metabolism at either the whole‐animal (MMR, AS) or biochemical level (i.e.…”

Section: Discussionmentioning

confidence: 97%

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Male sexually coercive behaviour drives increased swimming efficiency in female guppies

et al. 2015

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Summary Sexual coercion of females by males is widespread across sexually reproducing species. It stems from a conflict of interest over reproduction and exerts selective pressure on both sexes. For females, there is often a significant energetic cost of exposure to male sexually coercive behaviours.Our understanding of the efficiency of female resistance to male sexually coercive behaviour is key to understanding how sexual conflict contributes to population level dynamics and ultimately to the evolution of sexually antagonistic traits.Overlooked within this context are plastic physiological responses of traits within the lifetime of females that could moderate the energetic cost imposed by coercive males. Here, we examined whether conflict over the frequency and timing of mating between male and female guppies Poecilia reticulata can induce changes in swimming performance and aerobic capacity in females as they work to escape harassment by males.Females exposed to higher levels of harassment over a 5‐month period used less oxygen to swim at a given speed, but displayed no difference in resting metabolic rate, maximal metabolic rate, maximal sustained swimming speed or aerobic scope compared to females receiving lower levels of harassment.The observed increase in swimming efficiency is at least partially related to differences in swimming mechanics, likely brought on by a training effect of increased activity, as highly harassed females spent less time performing pectoral fin‐assisted swimming.Sexual conflict results in sexually antagonistic traits that impose a variety of costs, but our results show that females can reduce costs through phenotypic plasticity. It is also possible that phenotypic plasticity in swimming physiology or mechanics in response to sexual coercion can potentially give females more control over matings and affect which male traits are under selection.

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Effects of intraspecific variation in reproductive traits, pectoral fin use and burst swimming on metabolic rates and swimming performance: a study on the Trinidadian guppy (Poecilia reticulataPeters)

Cited by 31 publications

References 98 publications

Comparison of reproductive performance of Clarias batrachus (Linnaeus, 1758) collected from three Indian rivers

Comparison of reproductive performance of Clarias batrachus (Linnaeus, 1758) collected from three Indian rivers

Evidence of Circadian Rhythm, Oxygen Regulation Capacity, Metabolic Repeatability and Positive Correlations between Forced and Spontaneous Maximal Metabolic Rates in Lake Sturgeon Acipenser fulvescens

Male sexually coercive behaviour drives increased swimming efficiency in female guppies

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