The effect of duration and time of food availability 
on the photoperiodic response in the male house sparrow, <i>Passer domesticus</i>

Bhardwaj, Sanjay Kumar; Anushi,

doi:10.1051/rnd:2004014

Cited by 16 publications

(12 citation statements)

References 21 publications

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“…For example, Visser et al [21] report that in great tits (Parus major) warmer temperature leads to mistiming of reproduction. Additionally, recent findings suggest that food availability can cause both direct and time-dependent effects on photoperiodic induction of testicular growth in the black headed bunting, Emberiza melanocephala [22] and house sparrow, Passer domesticus [23].…”

Section: Sk Bhardwaj Anushimentioning

confidence: 99%

“…In the present study, we attempted to address this by examining the impact of a strong light stimulus on body mass and gonadal growth of two birds: the house sparrow (Passer domesticus) and brahminy myna (Sturnus pagodarum). Both species are photosensitive and use photoperiod in the regulation of their gonadal cycle [12,13,23,24]. We subjected them simultaneously to a long day length corresponding to what these species experience in the wild and to an unusually long day length that these species never experience in the wild.…”

Section: Sk Bhardwaj Anushimentioning

confidence: 99%

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Effect of photoperiod length on body mass and testicular growth in the house sparrow (Passer domesticus) and brahminy myna (Sturnus pagodarum)

Bhardwaj

Anushi

2006

Reprod. Nutr. Dev.

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Section: Sk Bhardwaj Anushimentioning

confidence: 99%

Section: Sk Bhardwaj Anushimentioning

confidence: 99%

Effect of photoperiod length on body mass and testicular growth in the house sparrow (Passer domesticus) and brahminy myna (Sturnus pagodarum)

Bhardwaj

Anushi

2006

Reprod. Nutr. Dev.

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“…The processes involved are poorly known overall [35]. One line of explanation may come from birds'studies showing that ad libitum feeding is the best regimen to induce testes' growth in blackheaded buntings ( Emberiza melanocyphala ) or house sparrows ( Passer domesticus ) [36]. But thesestudies also reveal that both duration and timing of food availability are important as synchrony between light and food cues seem to be critical.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have shown that inadequate nutrition or body condition had major effects on different breeding parameters in mares [33], [34], but the processes involved are not known [35]. In different species of birds, duration and time of food availability have been shown to influence males' gonadic growth [36].…”

Section: Introductionmentioning

confidence: 99%

Temporal Feeding Pattern May Influence Reproduction Efficiency, the Example of Breeding Mares

Benhajali

Ezzaouïa²,

Lunel³

et al. 2013

PLoS ONE

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Discomfort in farm animals may be induced by inappropriate types or timing of food supplies. Thus, time restriction of meals and lack of roughage have been shown to be one source of emergence of oral stereotypies and abnormal behaviour in horses which have evolved to eat high-fibre diets in small amounts over long periods of time. This feeding pattern is often altered in domestic environment where horses are often fed low fibre meals that can be rapidly consumed. This study aimed at determining the effect of the temporal pattern of feeding on reproductive efficiency of breeding mares, One hundred Arab breeding mares were divided into two groups that differed only in the temporal pattern of roughage availability: only at night for the standard feeding pattern group (SFP mares), night and day for the “continuous feeding” group (CF mares). The total amount of roughage provided was the same as the CF mares received half of the hay during the day while in paddock (haynets). Mares were tested for oestrus detection by teasing with one stallion and were then examined clinically by rectal palpations and ultrasound before being mated naturally or inseminated by fresh or frozen semen. Multivariate logistic regression was used to analyse data. The treatment affected significantly the reproductive efficiency of the mares with fewer oestrus abnormalities (p = 0.0002) and more fertility (p = 0.024) in CF mares (conception rate = 81% versus 55% in SFP mares). Ensuring semi-continous feeding by providing roughage may be a way of fulfilling the basic physiological needs of the horses' digestive system, reducing stress and associated inhibitors of reproduction. To our knowledge, this study provides the first evidence of an impact of temporal feeding patterns on reproductive success in a Mammal. Temporal patterns of feeding may be a major and underestimated factor in breeding.

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“…Food availability has also been shown to influence the timing of reproduction in neotropical rainforest Spotted Antbirds (Hylophylax naevioides) (Hau et al, 2000) and African Stonechats (Saxicola torquata axillaries) (Scheuerlein and Gwinner, 2002). Both the duration and timing of the food availability can affect the photoperiodic induction of body fattening and testicular growth in the Black-headed Bunting (Emberiza melanocephala) (Kumar et al, 2001) and House Sparrow (Passer domesticus) (Bhardwaj and Anushi, 2004). A very recent study shows that food as a cue can have dominance over light in regulation of testicular growth in Zebra Finches (Taeniopygia guttata guttata) (Perfito et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Food deprivation during photosensitive and photorefractory life-history stages affects the reproductive cycle in the migratory Red-headed Bunting(Emberiza bruniceps)

Budki

Rani

Kumar

2009

Journal of Experimental Biology

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SUMMARY In a seasonally breeding bird species, food deprivation affects reproduction. A key question is whether food shortage at any time in the year will affect reproduction even though the food supply subsequently becomes adequate. A prediction would be that a food supply that is of shorter duration than that optimally required during a life-history stage will have consequential effects on the succeeding life-history stages. Two experiments investigated this in gonadally regressed migratory Red-headed Buntings(Emberiza bruniceps) at two life-history stages: photosensitive and photorefractory. Experiment 1 employed two groups of photosensitive birds, and experiment 2 employed two groups of photorefractory birds. In both the experiments, birds were exposed for 8 weeks to a neutral day length at dim light intensity (12 h light: 12 h darkness, 12L:12D; L=∼5 lux, D=0 lux)with restricted feeding regimes (6 h food present: 18 h food absent, P:A 6:18 or P:A 12:12) and subsequently maintained for another 13 weeks at a highly stimulatory day length (16L:8D; L=400 lux; D=0 lux) with food ad libitum. We report that the pretreatment with restricted food cycles influenced the subsequent photoperiodic induction of reproductive (testis growth and molt) but not of metabolic (body fattening and mass gain)functions. The testicular response cycle under 16L:8D had a significantly lower amplitude in birds pretreated with P:A 6:18 than with P:A 12:12. Similarly, the recovery of photosensitivity was slower in photorefractory birds pretreated with P:A 6:18 than with P:A 12:12 food cycles. Overall, our findings show for the first time in a seasonally breeding vertebrate species that food deprivation during non-breeding periods of the annual cycle can affect reproductive functions later in the year.

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The effect of duration and time of food availability on the photoperiodic response in the male house sparrow, Passer domesticus

Abstract: -We investigated the effects of food availability on the seasonal testicular growth in the photoperiodic house sparrow (Passer domesticus).

Cited by 16 publications

References 21 publications

Effect of photoperiod length on body mass and testicular growth in the house sparrow (Passer domesticus) and brahminy myna (Sturnus pagodarum)

Effect of photoperiod length on body mass and testicular growth in the house sparrow (Passer domesticus) and brahminy myna (Sturnus pagodarum)

Temporal Feeding Pattern May Influence Reproduction Efficiency, the Example of Breeding Mares

Food deprivation during photosensitive and photorefractory life-history stages affects the reproductive cycle in the migratory Red-headed Bunting(Emberiza bruniceps)

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