Genetic differences affecting the fates of immature housefly populations at two densities

Bryant, Edwin H.; Sokal, Robert R.

doi:10.1007/bf02510870

Cited by 11 publications

(15 citation statements)

References 9 publications

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“…Thus at density 256 in mixed cultures, simulans also was affected by food exhaustion. We have therefore some indications of the nature of the interaction between the species, but more complete understanding would require detailed analyses as done by Bakker (1961) and Bryant andSokal (1967, 1968).…”

Section: Discussionmentioning

confidence: 99%

Interspecific Competition Between Drosophila Melanogaster and Drosophila Simulans: Effects of Larval Density on Viability, Developmental Period and Adult Body Weight

Barker

Podger

1970

Ecology

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Section: Discussionmentioning

confidence: 99%

Interspecific Competition Between Drosophila Melanogaster and Drosophila Simulans: Effects of Larval Density on Viability, Developmental Period and Adult Body Weight

Barker

Podger

1970

Ecology

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“…Such a matrix could be conceptualized by a cloud of points each representing an individual in a hyperdimensional space. The changes in physiological or genetic descriptors modifying the constellations of points in the space can be specified by a series of transition matrices (e.g., Bryant and Sokal, 1968) . The hyperdimensional space may be reduced considerably when a specific selection process is studied, since this may act along a few dimensions of variation only.…”

Section: Discussionmentioning

confidence: 99%

Untitled

1972

Evolution

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“…The growth rate in all species of higher Diptera examined at present is reduced in larvae reared in high population density; this is seen in different strains of houseflies (Kuenen 1958;Bryant and Sokal 'present address: Canpro Laboratories, 77 Champagne Drive, Downsview, Ont., Canada M3J 2C6. 1967, 1968Bryant 1969) and fruit flies (Chiang and Hodson 1950;Bakker 1969) and in several species of sciomyzid flies (Beaver 1974) and blowflies (Ullyett 1950). This response accounts for the fact that, when crowded, these larvae have an extended larval period but yet develop into small flies (Peters and Barbosa 1977).…”

Section: Introductionmentioning

confidence: 98%

Dynamics of growth modified by larval population density in the flesh fly, Sarcophaga bullata

Baxter¹,

Morrison²

1983

Can. J. Zool.

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1983. Dynamics of growth modified by larval population density in the flesh fly, Sarcophaga bullata. Can. J. Zool. 61: 5 12-5 17. Growth functions were fitted to the growth curves of larvae of the flesh fly, Sarcophaga bullata Parker (Diptera: Sarcophagidae), reared in conditions that were either uncrowded (25 larvae per 25 g beef liver) or crowded (400 larvae per 25 g beef liver). The growth curves took the form of logistic functions that were symmetrical for uncrowded larvae, but asymmetrical for crowded ones. Initially, crowded larvae grow faster than uncrowded larvae, a response in contrast with those of all other species of higher Diptera studied to date. Apparently, crowded larvae derived benefit from close intraspecific associations, for their rapid growth took place while they fed within dense aggregations. The growth rate of crowded larvae peaked early and growth ceased abruptly when the supply of food was exhausted. Their feeding period was reduced by 60% and their weight by 74% in comparison with those of uncrowded larvae. BAXTER, J. A., et P. E. MORRISON. 1983. Dynamics of growth modified by larval population density in the flesh fly, Sarcophaga bullata. Can. J. Zool. 61: 5 12-5 17.Les tquations des courbes de croissance des larves de la mouche ii viande Sarcophaga bullata Parker (Diptera: Sarcophagidae) ont Ct C calculCes dans le cas de larves ClevCes dans des conditions de densit6 faible (25 larves sur 25 g foie de boeuf) ou de densit6 ClevCe (400 larves sur 25 g foie de boeuf). Les courbes de croissance prennent la forme de fonctions logistiques symktriques dans le cas des larves ClevCes ii densit6 faible et asymktriques dans le cas de larves ClevCes ii densit6 forte. Au dCbut, les larves 21 densit6 ClevCe ont une croissance plus rapide que les larves ii densit6 faible, ii l'inverse de toutes les autres espkces de Diptkres supkrieurs ClevCs ii ce jour. Les larves ClevCes dans les conditions de densit6 ClevCe semblent bCnCficier des associations intrasptcifiques Ctroites, puisque leur croissance est rapide lorsqu'elles se nourrissent au sein de rassemblements importants. Le taux de croissance des larves 21 forte densit6 a atteint un palier assez rapidement et la croissance a cesd brusquement a 1'Cpuisement des ressources alimentaires. Leur pCriode d'alimentation s'est trouvCe rCduite de 60% et leur masse de 74% comparativement aux larves ClevCes ii une faible densitC.[Traduit par le journal]

show abstract

Genetic differences affecting the fates of immature housefly populations at two densities

Cited by 11 publications

References 9 publications

Interspecific Competition Between Drosophila Melanogaster and Drosophila Simulans: Effects of Larval Density on Viability, Developmental Period and Adult Body Weight

Interspecific Competition Between Drosophila Melanogaster and Drosophila Simulans: Effects of Larval Density on Viability, Developmental Period and Adult Body Weight

Untitled

Dynamics of growth modified by larval population density in the flesh fly, Sarcophaga bullata

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