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ANNUAL, INTRA-, AND INTER-SPECIFIC VARIATIONS IN BODY SIZE AND POTENTIAL FECUNDITY OF SOME TABANUS SPECIES (DIPTERA: TABANIDAE)

Published online by Cambridge University Press:  31 May 2012

D.J. Leprince  and
P. Jolicoeur
D.J. Leprince
Affiliation:
Département de pathologie et de microbiologie, Faculté de médecine vétérinaire, Université de Montréal, C.P. 5000, Saint-Hyacinthe, Québec, Canada J2S 7C6
P. Jolicoeur
Affiliation:
Département de sciences biologiques, Université de Montréal, C.P. 6128, Montréal, Québec, Canada H3C 3J7
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Abstract

Because egg production in Tabanus atratus, T. catenatus, T. lineola, T. quinquevittatus, and T. similis is not known in southwestern Quebec, potential fecundity and body size were evaluated respectively from the analysis of ovariole number and wing length in field-collected females. Ovariole number appears to be proportional to the third power of wing length, and fecundity indices can be derived from that relationship. Significant differences in body size and potential fecundity of the species suggest that there are different reproductive strategies within the genus Tabanus. Body size and potential fecundity varied significantly in both sampling years in T. lineola but not in T. quinquevittatus or T. similis. These results may prove useful in future studies of population dynamics or phylogeny.

Résumé

Étant donné que la production d’oeufs de Tabanus atratus, T. catenatus, T. lineola, T. quinquevittatus, et de T. similis n’est pas connue dans le sud-ouest du Québec, nous avons évalué leur fécondité potentielle et leur taille respective par le nombre d’ovarioles et la longueur de l’aile de femelles prélevées sur le terrain. Le nombre d’ovarioles paraît proportionnel au cube de la longueur de l’aile, et des indices de fécondité peuvent être dérivés de cette relation. Les différences significatives de la taille et de la fécondité potentielle des espèces étudiées suggèrent qu’il y a diverses stratégies de reproduction au sein du genre Tabanus. La taille et la fécondité potentielle ont varié de manière significative au cours de 2 années d’échantillonnage chez T. lineola mais non chez T. quinquevittatus et T. similis. Ces informations devraient s’avérer utiles lors d’études futures de dynamique des populations ou de phylogénie.

Type
Articles
Information
The Canadian Entomologist , Volume 118 , Issue 12 , December 1986 , pp. 1265 - 1272
Copyright
Copyright © Entomological Society of Canada 1986

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