PRESENCE OF CIRCADIAN RHYTHMS IN THE LOCOMOTOR ACTIVITY OF A CAVE-DWELLING MILLIPEDE<i>GLYPHIULUS CAVERNICOLUS SULU</i>(CAMBALIDAE, SPIROSTREPTIDA)

Koilraj, A. J.; Sharma, Vijay Kumar; Marimuthu, G.; Chandrashekaran, M. K.

doi:10.1081/cbi-100102111

Cited by 44 publications

(24 citation statements)

References 23 publications

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“…Moreover, these crayfish had retained circadian rhythm in oxygen consumption. Persistence of circadian rhythm in organisms maintained in aperiodic environments has also been reported in several cave-dwelling organisms (Blume et al, '62;Poulson and White, '69;Biswas et al, '90;Trajano and Menna-Barreto, '96;Koilraj et al, 2000). Activity-rest cycle of retinally degenerate mice was also reported to show circadian pattern (Provencio et al,'94).…”

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confidence: 81%

Persistence of oviposition rhythm in individuals of Drosophila melanogaster reared in an aperiodic environment for several hundred generations

Sheeba¹,

Chandrashekaran²,

Joshi³

et al. 2001

J. Exp. Zool.

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The oviposition rhythm of individual flies of Drosophila melanogaster from a population maintained in an aperiodic environment (with light, temperature, humidity, and other factors which could provide time cues, kept constant) for several hundred generations was assayed in constant light (LL), in light/dark (LD 12:12 hr) cycle, and in constant darkness (DD). More than 50% of the flies assayed exhibited rhythmicity in oviposition in all three light regimes. The results indicate that the phenomenon of egg laying is rhythmic in individual D. melanogaster females and is controlled by an endogenous time keeping mechanism. The persistence of the oviposition rhythm in a large proportion of individuals in the population after several hundred generations of rearing in a constant environment strengthens the view that possessing biological clocks may confer some intrinsic fitness advantage even to organisms living in aperiodic environments. J. Exp. Zool. 290:541-549, 2001.

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confidence: 81%

Persistence of oviposition rhythm in individuals of Drosophila melanogaster reared in an aperiodic environment for several hundred generations

Sheeba¹,

Chandrashekaran²,

Joshi³

et al. 2001

J. Exp. Zool.

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“…Thus, clock gene transcript level oscillations need to be studied in relation to diurnal and seasonal light and temperature variations to elucidate the zeitgeber mechanisms in P. hirtus. Examples of behavorial or metabolic rhythmicity in subterranean species include blind mole rats, the cavefish genera Astyanax and Nemacheilus, myriapods and crustaceans (Cooper et al, 1993;De La O-Martinez et al, 2004;Erckens and Martin, 1982;Goldman et al, 1997;Jegla and Poulson, 1968;Koilraj et al, 2000;Kumar Pati, 2001) (for a review, see Lamprecht and Weber, 1992). Curiously, while our data represent the first demonstration of the expression of the complete circadian gene network in a troglobiont, no evidence of oscillating behavior or metabolic activities has so far been reported for P. hirtus.…”

Section: Discussionmentioning

confidence: 99%

Phototransduction and clock gene expression in the troglobiont beetlePtomaphagus hirtusof Mammoth cave

Friedrich

Chen

Daines

et al. 2011

Journal of Experimental Biology

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SUMMARYObligatory cave species exhibit dramatic trait modifications such as eye reduction, loss of pigmentation and an increase in touch receptors. As molecular studies of cave adaptation have largely concentrated on vertebrate models, it is not yet possible to probe for genetic universalities underlying cave adaptation. We have therefore begun to study the strongly cave-adapted small carrion beetle Ptomaphagus hirtus. For over 100 years, this flightless signature inhabitant of Mammoth Cave, the world's largest known cave system, has been considered blind despite the presence of residual lens structures. By deep sequencing of the adult head transcriptome, we discovered the transcripts of all core members of the phototransduction protein machinery. Combined with the absence of transcripts of select structural photoreceptor and eye pigmentation genes, these data suggest a reduced but functional visual system in P. hirtus. This conclusion was corroborated by a negative phototactic response of P. hirtus in light/dark choice tests. We further detected the expression of the complete circadian clock gene network in P. hirtus, raising the possibility of a role of light sensation in the regulation of oscillating processes. We speculate that P. hirtus is representative of a large number of animal species with highly reduced but persisting visual capacities in the twilight zone of the subterranean realm. These can now be studied on a broad comparative scale given the efficiency of transcript discovery by next-generation sequencing.

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“…showed some degree of rhythmicity (circadian, ultradian, and/or infradian) (Trajano & MennaBarreto 1995. Most cave-dwelling millipedes (Glyphiulus cavernicplu sulu, Cambalidae, Spirostreptida) that occupy the deeper recesses of a cave show circadian rhythmicity (Koilraj et al 2000). The hypogean loach (Nemacheilus evezard), shows a circadian rhythm of body temperature, with individually varying periods (Pati 2001).…”

Section: The Adaptive Value Of Circadian Rhythmsmentioning

confidence: 99%

Partitioning of Time as an Ecological Resource

Kronfeld‐Schor

Dayan

2003

Annu. Rev. Ecol. Evol. Syst.

774

684

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s Abstract Animal species have evolved different diel activity rhythms that are of adaptive value. Theory suggests that diel temporal partitioning may facilitate coexistence between competitors and between predators and prey. However, relatively few studies demonstrate a temporal shift that is predation-or competition-induced. Recorded shifts are usually within the preferred activity phase of animal species (day or night), although there are some inversions to the opposite phase cycle. Temporal partitioning is not perceived as a common mechanism of coexistence. This rarity has been variously ascribed to theoretical considerations and to the rigidity of time-keeping mechanisms, as well as to other physiological and anatomical traits that may constrain activity patterns. Our decade-long study of spiny mice of rocky deserts demonstrates that, while different factors select for activity patterns, endogenous rhythmicity may be an evolutionary constraint.

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PRESENCE OF CIRCADIAN RHYTHMS IN THE LOCOMOTOR ACTIVITY OF A CAVE-DWELLING MILLIPEDEGLYPHIULUS CAVERNICOLUS SULU(CAMBALIDAE, SPIROSTREPTIDA)

Cited by 44 publications

References 23 publications

Persistence of oviposition rhythm in individuals of Drosophila melanogaster reared in an aperiodic environment for several hundred generations

Persistence of oviposition rhythm in individuals of Drosophila melanogaster reared in an aperiodic environment for several hundred generations

Phototransduction and clock gene expression in the troglobiont beetlePtomaphagus hirtusof Mammoth cave

Partitioning of Time as an Ecological Resource

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