Commitment to metamorphosis in tsetse (Glossina morsitans centralis): Temporal, nutritional and hormonal aspects of the decision

Denlinger, David L.; Žďárek, Jan

doi:10.1016/0022-1910(91)90083-c

Cited by 5 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the basis of on our'present knowledge of the mother-larva relationship, it seems that the anomaly is associated with a breakdown in coordination between mother and offspring on the timing of the commencement of parturition. This suggestion is strengthened by the observation that whether parturition is triggered or not, further pupariation events proceed unhindered since the various tissues of the third instar larva become committed to metamorphosis while still in the uterus following ecdysteroid induction (8). Dzadrek and Denlinger (10) showed that manipulation of the larva including wrapping in paraffin and wedging into narrow plastic cones (which corresponds to the confines of the materna1 uterus) causes acceleration of pupariation and that the timing of the different events remained fixed.…”

Section: Discussionmentioning

confidence: 99%

Troubles de la reproduction dans un élevage en laboratoire de Glossana palpalis palpalis Robineau-Desvoidy (Diptera : Glossinidae)

Ahmed¹,

Onyiah²,

Suleiman³

1995

Rev. Elev. Med. Vet. Pays Trop.

View full text Add to dashboard Cite

Les troubles de la reproduction ont été utilisés comme paramètre pour l'évaluation de la baisse de fécondité d'une colonie de G. p. palpalis. Les résultats ont montré que l'avortement représentait la forme la plus courante des troubles de la fonction de reproduction et la cause principale de la baisse de la fécondité, suivi immédiatement par la pupaison in utero des larves parvenues au troisième stade larvaire. L'incidence du blocage ovulaire, de l'échec de l'insémination et de la dégénérescence des follicules de l'embryon ou de l'oeuf était faible. On n'a observé aucun cas d'atrophie de l'ovaire. Les avortements d'oeufs et de larves ont été enregistrés dans toutes les classes d'âge étudiées, ce qui indique que l'avortement survient à n'importe quel stade du cycle de gestation des femelles. Les troubles de la reproduction ne dépassant pas 3 % au total, la baisse de la fécondité due à des anomalies de la reproduction dans la colonie de tsé-tsé étudiée est minime.

show abstract

Section: Discussionmentioning

confidence: 99%

Troubles de la reproduction dans un élevage en laboratoire de Glossana palpalis palpalis Robineau-Desvoidy (Diptera : Glossinidae)

Ahmed¹,

Onyiah²,

Suleiman³

1995

Rev. Elev. Med. Vet. Pays Trop.

View full text Add to dashboard Cite

show abstract

“…at pupation are around 120 mg, but individuals weighing as little as 20 mg are fully viable. This is not true for tsetse (Denlinger & Zdarek, 1991a). The obligate feeding period in tsetse encompasses most of the third instar's in utero development.…”

Section: Commitment To Metamorphosismentioning

confidence: 98%

“…Parturition must not occur until the third instar larva has made a full commitment to metamorphosis (see above section). To do so earlier would result in a larva that could not pupariate successfully (Denlinger & Zdarek, 1991a). A delay in parturition can be equally disastrous.…”

Section: The Timing Of Parturitionmentioning

confidence: 99%

“…Classical ligation experiments indicate that, at parturition, the mature tsetse larva has already passed the 'critical period', i.e. received sufficient ecdysteroid to commit the epidermal cells (Langley, 1967;Whitehead, 1974;Zdarek & Denlinger, 1992b) and the appropriate motor centres in the CNS (Denlinger & Zdarek, 1991a) to metamorphosis. The source of larval ecdysteroids is unknown, but by analogy with other Diptera, the hormone most likely originates from the prothoracic gland component of the larval ring gland.…”

Section: Neural and Hormonal Regulation Of Pupariationmentioning

confidence: 99%

See 1 more Smart Citation

Metamorphosis behaviour and regulation in tsetse flies (Glossinaspp.) (Diptera: Glossinidae): a review

Žďárek

Denlinger

1993

Bull. Entomol. Res.

View full text Add to dashboard Cite

This review examines the recent literature on tsetse (Glossina spp.) metamorphosis behaviour and its regulation. The behavioural events associated with metamorphosis are highly specific and most occur only once during the life of the fly. The review begins with the larva's commitment to metamorphosis and then discusses the behaviour associated with parturition, wandering of the third instar larva, pupariation, pupation and adult eclosion. While certain aspects of tsetse metamorphosis behaviour are common to the higher Diptera, the peculiar reproductive strategy of tsetse has dictated many modifications. Most notable of the tsetse peculiarities are the larva's late commitment to metamorphosis, the contribution by the mother in deciding the onset of the wandering period, the brevity of the wandering period, the involvement of the nervous system in co-ordinating puparial tanning, the tight packaging of the pupa within the puparium, the long duration of pharate adult development, and the great expansion of the body that occurs following eclosion. A final section discusses the potential for disrupting tsetse metamorphosis. IntroductionThis review examines the behavioural events associated with metamorphosis in tsetse (Glossina spp.) and discusses the regulation of these activities by the endocrine and nervous systems. Successful metamorphosis requires the performance of sets of behaviours that are developmentally specific and must be executed with precision and in the proper sequence. We start with the third instar larva's commitment to metamorphosis and then discuss the subsequent sequence of events that includes parturition, wandering behaviour, pupariation, intrapuparial behaviour, and finally adult eclosion. Though other reviews provide a more general survey of Diptera metamorphosis behaviour (Zdarek, 1985; Denlinger & Zdarek, in press), tsetse, in many respects, do not fit the pattern of other flies. For example, corn-

show abstract

A hormone from the uterus of the tsetse fly, Glossina morsitans, stimulates parturition and abortion

Denlinger

Žďárek

1997

Journal of Insect Physiology

View full text Add to dashboard Cite

Commitment to metamorphosis in tsetse (Glossina morsitans centralis): Temporal, nutritional and hormonal aspects of the decision

Cited by 5 publications

References 7 publications

Troubles de la reproduction dans un élevage en laboratoire de <em>Glossana palpalis palpalis</em> Robineau-Desvoidy (<em>Diptera : Glossinidae</em>)

Troubles de la reproduction dans un élevage en laboratoire de <em>Glossana palpalis palpalis</em> Robineau-Desvoidy (<em>Diptera : Glossinidae</em>)

Metamorphosis behaviour and regulation in tsetse flies (Glossinaspp.) (Diptera: Glossinidae): a review

A hormone from the uterus of the tsetse fly, Glossina morsitans, stimulates parturition and abortion

Contact Info

Product

Resources

About