Experts and Doctors on photoperiod in United States

Summary

Locale: United States
Topic: photoperiod

Top Publications

  1. Yang X, Wood P, Ansell C, Hrushesky W. Circadian time-dependent tumor suppressor function of period genes. Integr Cancer Ther. 2009;8:309-16 pubmed publisher
    ..These data suggest that the therapeutic efficacy of antiproliferation agents depends on the time of day of drug delivery. The optimal times of day may be shifted in tumors that have mutant Period genes. ..
  2. Liang J, Abata K, Bachelder E, Bartley B, Bozadjieva N, Caskey V, et al. Original research in the classroom: why do zebrafish spawn in the morning?. Zebrafish. 2011;8:191-202 pubmed publisher
    ..Our successes and failures carrying out original research as part of an undergraduate course should contribute to the growing approaches for using zebrafish to bring the excitement of experimental science to the classroom. ..
  3. Einat H, Kronfeld Schor N, Eilam D. Sand rats see the light: short photoperiod induces a depression-like response in a diurnal rodent. Behav Brain Res. 2006;173:153-7 pubmed
    ..g., SAD), which in humans is a prevalent disorder, with winter depression episodes and spring/summer remissions. ..
  4. DeAndrade M, Johnson R, Unger E, Zhang L, van Groen T, Gamble K, et al. Motor restlessness, sleep disturbances, thermal sensory alterations and elevated serum iron levels in Btbd9 mutant mice. Hum Mol Genet. 2012;21:3984-92 pubmed publisher
    ..Finally, our data argue for the utility of Btbd9 mutant mice to discover and screen novel therapeutics for RLS. ..
  5. Salome P, To J, Kieber J, McClung C. Arabidopsis response regulators ARR3 and ARR4 play cytokinin-independent roles in the control of circadian period. Plant Cell. 2006;18:55-69 pubmed
    ..Therefore, ARR3 and ARR4 are critical for proper circadian period and define an additional level of regulation of the circadian clock in Arabidopsis. ..
  6. Gunduz B, Stetson M. A test of the coincidence and duration models of melatonin action in Siberian hamsters: the effects of 1-hr melatonin infusions on testicular development in intact and pinealectomized prepubertal Phodopus sungorus. J Pineal Res. 2001;30:97-107 pubmed
  7. Swoap S. Altered leptin signaling is sufficient, but not required, for hypotension associated with caloric restriction. Am J Physiol Heart Circ Physiol. 2001;281:H2473-9 pubmed
    ..These data suggest that at least two pathways are involved with cardiovascular effects of caloric restriction: one dependent on leptin signaling and the other independent of the leptin axis...
  8. Davis C, Clinton J, Krueger J. MicroRNA 138, let-7b, and 125a inhibitors differentially alter sleep and EEG delta-wave activity in rats. J Appl Physiol (1985). 2012;113:1756-62 pubmed publisher
  9. Watson W, Bedford L, Chabot C. Rhythms of locomotion expressed by Limulus polyphemus, the American horseshoe crab: II. Relationship to circadian rhythms of visual sensitivity. Biol Bull. 2008;215:46-56 pubmed
    ..This arrangement allows horseshoe crabs to see quite well while mating during both daytime and nighttime high tides...
  10. Salome P, Xie Q, McClung C. Circadian timekeeping during early Arabidopsis development. Plant Physiol. 2008;147:1110-25 pubmed publisher
    ..A circadian clock entrainable by temperature cycles in germinating etiolated seedlings may synchronize the buried seedling with the local daily cycles before emergence from the soil and exposure to light. ..

Detail Information

Publications62

  1. Yang X, Wood P, Ansell C, Hrushesky W. Circadian time-dependent tumor suppressor function of period genes. Integr Cancer Ther. 2009;8:309-16 pubmed publisher
    ..These data suggest that the therapeutic efficacy of antiproliferation agents depends on the time of day of drug delivery. The optimal times of day may be shifted in tumors that have mutant Period genes. ..
  2. Liang J, Abata K, Bachelder E, Bartley B, Bozadjieva N, Caskey V, et al. Original research in the classroom: why do zebrafish spawn in the morning?. Zebrafish. 2011;8:191-202 pubmed publisher
    ..Our successes and failures carrying out original research as part of an undergraduate course should contribute to the growing approaches for using zebrafish to bring the excitement of experimental science to the classroom. ..
  3. Einat H, Kronfeld Schor N, Eilam D. Sand rats see the light: short photoperiod induces a depression-like response in a diurnal rodent. Behav Brain Res. 2006;173:153-7 pubmed
    ..g., SAD), which in humans is a prevalent disorder, with winter depression episodes and spring/summer remissions. ..
  4. DeAndrade M, Johnson R, Unger E, Zhang L, van Groen T, Gamble K, et al. Motor restlessness, sleep disturbances, thermal sensory alterations and elevated serum iron levels in Btbd9 mutant mice. Hum Mol Genet. 2012;21:3984-92 pubmed publisher
    ..Finally, our data argue for the utility of Btbd9 mutant mice to discover and screen novel therapeutics for RLS. ..
  5. Salome P, To J, Kieber J, McClung C. Arabidopsis response regulators ARR3 and ARR4 play cytokinin-independent roles in the control of circadian period. Plant Cell. 2006;18:55-69 pubmed
    ..Therefore, ARR3 and ARR4 are critical for proper circadian period and define an additional level of regulation of the circadian clock in Arabidopsis. ..
  6. Gunduz B, Stetson M. A test of the coincidence and duration models of melatonin action in Siberian hamsters: the effects of 1-hr melatonin infusions on testicular development in intact and pinealectomized prepubertal Phodopus sungorus. J Pineal Res. 2001;30:97-107 pubmed
  7. Swoap S. Altered leptin signaling is sufficient, but not required, for hypotension associated with caloric restriction. Am J Physiol Heart Circ Physiol. 2001;281:H2473-9 pubmed
    ..These data suggest that at least two pathways are involved with cardiovascular effects of caloric restriction: one dependent on leptin signaling and the other independent of the leptin axis...
  8. Davis C, Clinton J, Krueger J. MicroRNA 138, let-7b, and 125a inhibitors differentially alter sleep and EEG delta-wave activity in rats. J Appl Physiol (1985). 2012;113:1756-62 pubmed publisher
  9. Watson W, Bedford L, Chabot C. Rhythms of locomotion expressed by Limulus polyphemus, the American horseshoe crab: II. Relationship to circadian rhythms of visual sensitivity. Biol Bull. 2008;215:46-56 pubmed
    ..This arrangement allows horseshoe crabs to see quite well while mating during both daytime and nighttime high tides...
  10. Salome P, Xie Q, McClung C. Circadian timekeeping during early Arabidopsis development. Plant Physiol. 2008;147:1110-25 pubmed publisher
    ..A circadian clock entrainable by temperature cycles in germinating etiolated seedlings may synchronize the buried seedling with the local daily cycles before emergence from the soil and exposure to light. ..
  11. Griffith T, Watson M. Is evolution necessary for range expansion? Manipulating reproductive timing of a weedy annual transplanted beyond its range. Am Nat. 2006;167:153-64 pubmed
    ..These results suggest that relatively few traits may limit a species' range and that identifying evolutionary constraints on such traits could be important for predicting geographic distribution. ..
  12. Mulekar J, Bu Q, Chen F, Huq E. Casein kinase II ? subunits affect multiple developmental and stress-responsive pathways in Arabidopsis. Plant J. 2012;69:343-54 pubmed publisher
    ..Moreover, CK2 ? subunit mutants are also hyposensitive to a NaCl-induced blockage of seed germination. Taken together, these data suggest that CK2 ? subunits affect diverse developmental and stress responsive pathways in Arabidopsis. ..
  13. Xu X, Rose A, Muthuswamy S, Jeong S, Venkatakrishnan S, Zhao Q, et al. NUCLEAR PORE ANCHOR, the Arabidopsis homolog of Tpr/Mlp1/Mlp2/megator, is involved in mRNA export and SUMO homeostasis and affects diverse aspects of plant development. Plant Cell. 2007;19:1537-48 pubmed
  14. Mahoney C, Brewer D, Costello M, Brewer J, Bittman E. Lateralization of the central circadian pacemaker output: a test of neural control of peripheral oscillator phase. Am J Physiol Regul Integr Comp Physiol. 2010;299:R751-61 pubmed publisher
    ..Our results indicate that neural pathways contribute to, but cannot completely account for, SCN regulation of the phase of peripheral oscillators...
  15. Trainor B, Martin L, Greiwe K, Kuhlman J, Nelson R. Social and photoperiod effects on reproduction in five species of Peromyscus. Gen Comp Endocrinol. 2006;148:252-9 pubmed
  16. Kim S, Yu X, Michaels S. Regulation of CONSTANS and FLOWERING LOCUS T expression in response to changing light quality. Plant Physiol. 2008;148:269-79 pubmed publisher
  17. Navara K, Workman J, Oberdick J, Nelson R. Short day lengths skew prenatal sex ratios toward males in Siberian hamsters. Physiol Biochem Zool. 2010;83:127-34 pubmed publisher
    ..Thus, photoperiod functions as an effective seasonal cue, stimulating sex ratio skews toward males when day lengths are short. ..
  18. Workman J, Bowers S, Nelson R. Enrichment and photoperiod interact to affect spatial learning and hippocampal dendritic morphology in white-footed mice (Peromyscus leucopus). Eur J Neurosci. 2009;29:161-70 pubmed publisher
    ..These results suggest that day length and other non-photic environmental factors interact to regulate dendritic morphology, and that short photoperiods do not constrain the capacity for functional neural plasticity...
  19. Pyter L, Hotchkiss A, Nelson R. Photoperiod-induced differential expression of angiogenesis genes in testes of adult Peromyscus leucopus. Reproduction. 2005;129:201-9 pubmed
  20. Doyle M, Bizzell C, Keller M, Michaels S, Song J, Noh Y, et al. HUA2 is required for the expression of floral repressors in Arabidopsis thaliana. Plant J. 2005;41:376-85 pubmed
    ..hua2 mutations suppress late flowering by reducing the expression of several MADS genes that act as floral repressors including FLOWERING LOCUS C (FLC ) and FLOWERING LOCUS M (FLM ). ..
  21. Hutchinson A, Hudson R, Dubocovich M. Genetic deletion of MT(1) and MT(2) melatonin receptors differentially abrogates the development and expression of methamphetamine-induced locomotor sensitization during the day and the night in C3H/HeN mice. J Pineal Res. 2012;53:399-409 pubmed publisher
    ..We suggest that MT(1) and MT(2) melatonin receptors are potential targets for pharmacotherapeutic intervention in METH abusers. ..
  22. Hill W, Bassi K, Bonaventura L, Sacus J. Prehatch entrainment of circadian rhythms in the domestic chick using different light regimes. Dev Psychobiol. 2004;45:174-86 pubmed
    ..The onset of entrainment is earlier than predicted and suggests that the brain structures mediating circadian rhythms mature sooner than proposed by previous research. ..
  23. Mishra M, Wilson F, Scanlan T, Chiellini G. Thyroid hormone-dependent seasonality in American tree sparrows (Spizella arborea): effects of GC-1, a thyroid receptor beta-selective agonist, and of iopanoic acid, a deiodinase inhibitor. J Comp Physiol B. 2004;174:471-9 pubmed
    ..Because IOP augmented the photoperiodic testicular response in T3-treated THX birds, T3 may act either independently or co-dependently with T4 in programming vernal seasonal events. ..
  24. Ream T, Woods D, Amasino R. The molecular basis of vernalization in different plant groups. Cold Spring Harb Symp Quant Biol. 2012;77:105-15 pubmed publisher
    ..We also discuss the advantages of using Brachypodium as a model system to study flowering and vernalization in the Pooids. Finally, we discuss the evolution and function of the Ghd7/VRN2 gene family in grasses. ..
  25. Lewy A, Emens J, Bernert R, Lefler B. Eventual entrainment of the human circadian pacemaker by melatonin is independent of the circadian phase of treatment initiation: clinical implications. J Biol Rhythms. 2004;19:68-75 pubmed
    ..Therefore, it is not essential that circadian phase be ascertained before starting low-dose melatonin treatment of blind people. ..
  26. Prendergast B, Mosinger B, Kolattukudy P, Nelson R. Hypothalamic gene expression in reproductively photoresponsive and photorefractory Siberian hamsters. Proc Natl Acad Sci U S A. 2002;99:16291-6 pubmed
  27. Huang H, Yoo C, Bindbeutel R, Goldsworthy J, Tielking A, Alvarez S, et al. PCH1 integrates circadian and light-signaling pathways to control photoperiod-responsive growth in Arabidopsis. elife. 2016;5:e13292 pubmed publisher
    ..Thus, PCH1 is a new factor that regulates photoperiod-responsive growth by integrating the clock with light perception pathways through modulating daily phyB-signaling. ..
  28. Tsuchiya S, Buhr E, Higashide T, Sugiyama K, Van Gelder R. Light entrainment of the murine intraocular pressure circadian rhythm utilizes non-local mechanisms. PLoS ONE. 2017;12:e0184790 pubmed publisher
    ..These results suggest that IOP rhythm entrainment is mediated by a systemic rather than local signal in mice. ..
  29. Chen Y, Carver B, Wang S, Zhang F, Yan L. Genetic loci associated with stem elongation and winter dormancy release in wheat. Theor Appl Genet. 2009;118:881-9 pubmed publisher
    ..Hence, breeders in this area have inadvertently selected this allele, contributing to later stem elongation and more conducive developmental patterns for grain production. ..
  30. Duffield G, Watson N, Mantani A, Peirson S, Robles Murguia M, Loros J, et al. A role for Id2 in regulating photic entrainment of the mammalian circadian system. Curr Biol. 2009;19:297-304 pubmed publisher
    ..These data suggest that the Id genes may be important for entrainment and operation of the mammalian circadian system, potentially acting through BMAL1 and CLOCK targets. ..
  31. Mauro Herrera M, Wang X, Barbier H, Brutnell T, Devos K, Doust A. Genetic control and comparative genomic analysis of flowering time in Setaria (Poaceae). G3 (Bethesda). 2013;3:283-95 pubmed publisher
    ..This suggests that variation in flowering time in separate grass lineages is controlled by a combination of conserved and lineage specific genes...
  32. Hall M, Kamilar J, Kirk E. Eye shape and the nocturnal bottleneck of mammals. Proc Biol Sci. 2012;279:4962-8 pubmed publisher
    ..Our results provide additional evidence for a nocturnal 'bottleneck' in the early evolution of crown mammals. ..
  33. Thakare D, Kumudini S, Dinkins R. Expression of flowering-time genes in soybean E1 near-isogenic lines under short and long day conditions. Planta. 2010;231:951-63 pubmed publisher
    ..The gene expression results in this study were similar to those of flowering-time genes found in other SD species, suggesting that the selected genes correspond to the soybean flowering-time orthologs. ..
  34. Workman J, DeWitt S, Fonken L, Nelson R. Environmental enrichment enhances delayed-type hypersensitivity in both short- and long-day Siberian hamsters. Physiol Behav. 2010;99:638-43 pubmed publisher
  35. Romero A, Potter M, Haynes K. Circadian rhythm of spontaneous locomotor activity in the bed bug, Cimex lectularius L. J Insect Physiol. 2010;56:1516-22 pubmed publisher
    ..Such a strategy would enable bed bugs to maximize reproduction when resources are abundant and save energy when resources are scarce. ..
  36. Kim D, Sung S. The Plant Homeo Domain finger protein, VIN3-LIKE 2, is necessary for photoperiod-mediated epigenetic regulation of the floral repressor, MAF5. Proc Natl Acad Sci U S A. 2010;107:17029-34 pubmed publisher
    ..Thus, the repression of MAF5 by VIL2 provides a mechanism to promote flowering in noninductive photoperiods, which contributes to the facultative nature of the Arabidopsis photoperiodic response. ..
  37. Filichkin S, Breton G, Priest H, Dharmawardhana P, Jaiswal P, Fox S, et al. Global profiling of rice and poplar transcriptomes highlights key conserved circadian-controlled pathways and cis-regulatory modules. PLoS ONE. 2011;6:e16907 pubmed publisher
    ..Identification of identical overrepresented motifs in the promoters of cycling genes from different species suggests that the core diurnal/circadian cis-regulatory network is deeply conserved between mono- and dicotyledonous species. ..
  38. Shahed A, Young K. Differential ovarian expression of KiSS-1 and GPR-54 during the estrous cycle and photoperiod induced recrudescence in Siberian hamsters (Phodopus sungorus). Mol Reprod Dev. 2009;76:444-52 pubmed publisher
    ..Transient increases in KiSS-1/GPR54 expression following LD stimulation are also suggestive of possible involvement in ovulation and/or restoration of ovarian function...
  39. Wollenberg A, Strasser B, Cerdán P, Amasino R. Acceleration of flowering during shade avoidance in Arabidopsis alters the balance between FLOWERING LOCUS C-mediated repression and photoperiodic induction of flowering. Plant Physiol. 2008;148:1681-94 pubmed publisher
    ..Finally, our analysis of the contribution of PHYTOCHROME AND FLOWERING TIME1 (PFT1) to shade-mediated rapid flowering has led us to suggest a new model for the involvement of PFT1 in light signaling. ..
  40. Greives T, Kriegsfeld L, Demas G. Exogenous kisspeptin does not alter photoperiod-induced gonadal regression in Siberian hamsters (Phodopus sungorus). Gen Comp Endocrinol. 2008;156:552-8 pubmed publisher
    ..Collectively, these results provide evidence that mechanisms in addition to those that converge on the kisspeptin system are likely critical for seasonal changes in the reproductive axis...
  41. Edmonds K, Stetson M. Effects of age and photoperiod on reproduction and the spleen in the marsh rice rat (Oryzomys palustris). Am J Physiol Regul Integr Comp Physiol. 2001;280:R1249-55 pubmed
    ..These data suggest that the reproductive response to photoperiod in adult male rice rats declines with age, whereas in adult females it does not...
  42. Prendergast B, Wynne Edwards K, Yellon S, Nelson R. Photorefractoriness of immune function in male Siberian hamsters (Phodopus sungorus). J Neuroendocrinol. 2002;14:318-29 pubmed
    ..Together, these data indicate that, similar to the reproductive system, the immune system of male Siberian hamsters exhibits refractoriness to short days...
  43. Adamczyk B, Lehti Shiu M, Fernandez D. The MADS domain factors AGL15 and AGL18 act redundantly as repressors of the floral transition in Arabidopsis. Plant J. 2007;50:1007-19 pubmed
    ..Thus, flowering time is determined by the additive effect of multiple MADS domain floral repressors, with important contributions from AGL15 and AGL18. ..
  44. Demas G. Splenic denervation blocks leptin-induced enhancement of humoral immunity in Siberian hamsters (Phodopus sungorus). Neuroendocrinology. 2002;76:178-84 pubmed
  45. Picone J, Clery R, Watanabe N, MacTavish H, Turnbull C. Rhythmic emission of floral volatiles from Rosa damascena semperflorens cv. 'Quatre Saisons'. Planta. 2004;219:468-78 pubmed
    ..Regression analysis indicated a significant decrease in glycosylated 2-phenylethanol through the photoperiod. These results suggest that glycosylated volatiles stored within petals may be a source of rhythmically emitted volatiles. ..
  46. Holberton R. Changes in patterns of corticosterone secretion concurrent with migratory fattening in a neotropical migratory bird. Gen Comp Endocrinol. 1999;116:49-58 pubmed
    ..These results support both components of the MMH illustrating changes in corticosterone secretion concurrent with migratory fattening but the exact nature of this change is unknown. ..
  47. Mizell R, Tipping C, Andersen P, Brodbeck B, Hunter W, Northfield T. Behavioral model for Homalodisca vitripennis (Hemiptera: Cicadellidae): optimization of host plant utilization and management implications. Environ Entomol. 2008;37:1049-62 pubmed
    ..fastidiosa aimed at reducing vector populations through habitat manipulation. ..
  48. Mendoza Viveros L, Chiang C, Ong J, Hegazi S, Cheng A, Bouchard Cannon P, et al. miR-132/212 Modulates Seasonal Adaptation and Dendritic Morphology of the Central Circadian Clock. Cell Rep. 2017;19:505-520 pubmed publisher
    ..Our results reveal that, by regulating the dendritic structure of SCN neurons through a MeCP2-dependent mechanism, miR-132/212 affects the capacity of the SCN to encode seasonal time. ..
  49. Wilson F. A test of the hypothesis that T3 is the "seasonality" thyroid hormone in American tree sparrows (Spizella arborea): intracerebroventricular infusion of iopanoic acid, an inhibitor of T3 synthesis and degradation. J Comp Physiol B. 2001;171:113-9 pubmed
  50. Doyle M, Davis S, Bastow R, McWatters H, Kozma Bognar L, Nagy F, et al. The ELF4 gene controls circadian rhythms and flowering time in Arabidopsis thaliana. Nature. 2002;419:74-7 pubmed
    ..Mutations in elf4 result in early flowering in non-inductive photoperiods, which is probably caused by elevated amounts of CONSTANS (CO), a gene that promotes floral induction. ..
  51. Michaels S, Himelblau E, Kim S, Schomburg F, Amasino R. Integration of flowering signals in winter-annual Arabidopsis. Plant Physiol. 2005;137:149-56 pubmed
    ..Thus, the integration of flowering signals from the photoperiod and vernalization pathways occurs, at least in part, through the regulation of FT, TSF, and SOC1. ..
  52. Smarr B, Morris E, de la Iglesia H. The dorsomedial suprachiasmatic nucleus times circadian expression of Kiss1 and the luteinizing hormone surge. Endocrinology. 2012;153:2839-50 pubmed publisher
    ..They also suggest that female reproductive disorders associated with nocturnal shift work could emerge from the desynchronization between subregional oscillators within the master circadian clock. ..
  53. Bedrosian T, Fonken L, Demas G, Nelson R. Photoperiod-dependent effects of neuronal nitric oxide synthase inhibition on aggression in Siberian hamsters. Horm Behav. 2012;61:176-80 pubmed publisher
    ..Short days also reduced testosterone concentrations, without any effect of treatment. These data provide further evidence linking reduced nNOS to elevated short-day aggression and support a role for NO signaling in this phenomenon. ..
  54. Borchert R, Renner S, Calle Z, Navarrete D, Tye A, Gautier L, et al. Photoperiodic induction of synchronous flowering near the Equator. Nature. 2005;433:627-9 pubmed
  55. Sung S, Schmitz R, Amasino R. A PHD finger protein involved in both the vernalization and photoperiod pathways in Arabidopsis. Genes Dev. 2006;20:3244-8 pubmed
    ..In addition, VIL1 regulates FLM independently of VIN3 in a photoperiod-dependent manner. ..
  56. Scotti M, Place N, Demas G. Short-day increases in aggression are independent of circulating gonadal steroids in female Siberian hamsters (Phodopus sungorus). Horm Behav. 2007;52:183-90 pubmed
    ..These results also suggest that the endocrine regulation of seasonal aggression may be similar between the sexes...
  57. Orshinsky A, Boland G. Ophiostoma mitovirus 3a , ascorbic acid, glutathione, and photoperiod affect the development of stromata and apothecia by Sclerotinia homoeocarpa. Can J Microbiol. 2011;57:398-407 pubmed publisher
    ..homoeocarpa isolates. This is the first report of sterile apothecia production by North American isolates of S. homoeocarpa and provides a starting point for attempts to produce fertile apothecia. ..
  58. Schmitz R, Hong L, Fitzpatrick K, Amasino R. DICER-LIKE 1 and DICER-LIKE 3 redundantly act to promote flowering via repression of FLOWERING LOCUS C in Arabidopsis thaliana. Genetics. 2007;176:1359-62 pubmed
    ..This delayed-flowering phenotype is similar to that of autonomous-pathway mutants, and the flowering delay can be overcome by vernalization. ..
  59. Weil Z, Workman J, Nelson R. Housing condition alters immunological and reproductive responses to day length in Siberian hamsters (Phodopus sungorus). Horm Behav. 2007;52:261-6 pubmed
    ..These data suggest that short day enhancement of immune function is independent of photoperiod-mediated changes in the reproductive system. ..
  60. Meitzen J, Moore I, Lent K, Brenowitz E, Perkel D. Steroid hormones act transsynaptically within the forebrain to regulate neuronal phenotype and song stereotypy. J Neurosci. 2007;27:12045-57 pubmed
    ..This novel transsynaptic effect of gonadal steroids on activity and morphology of RA neurons is part of a concerted change in key premotor nuclei, enabling stereotyped song...
  61. Bailey M, Walton J, Dowd S, Weil Z, Nelson R. Photoperiod modulates gut bacteria composition in male Siberian hamsters (Phodopus sungorus). Brain Behav Immun. 2010;24:577-84 pubmed publisher
    ..These data indicate that the intestinal microbiota are responsive to changes in photoperiod and suggest that these changes may in part influence photoperiodic changes in body and fat masses...
  62. Mull C, Lowe C, Young K. Photoperiod and water temperature regulation of seasonal reproduction in male round stingrays (Urobatis halleri). Comp Biochem Physiol A Mol Integr Physiol. 2008;151:717-25 pubmed publisher
    ..Together, these findings suggest that temperature plays an important role in the regulation of testosterone, and may serve as an ultimate cue for reproduction in male round stingrays...