REPRODUCTIVE BEHAVIOUR OF ACROBELOIDES SP. BY M. SHAMIM JAIRAJPURI and MUJIB I. AZMI Section of Nematology, Department of Zoology, Aligarh Muslim University, Aligarh-202001, India There is an inherent tendency for attraction between adults and juveniles of Acrobeloides sp. resulting in their aggregation. The males are strongly attracted towards females which results in mating. During copulation it was observed that the males appear to be more activated. The egg- laying is performed by the contraction of uterine muscles and due to an increased turgor pressure inside the body of the nematodes. The females as they grow older appear to be increasingly incapable of laying eggs which are retained within the uterus and undergo intra-uterine develop- ment. This type of development proceeds at a faster rate compared to the normal extra-uterine development. The increased frequency of pulsation of the oesophageal valve before hatching probably is an indication for hatching. The third-stage juveniles, young males, and egg-laying females are more active than the other stages in the life cycle of this nematode. Although the biological aspects of reproduction in plant-parasitic and soil- inhabiting nematodes have received some attention in recent years (Wallace, 1963), the behavioural aspects of reproduction remain largely unknown.
Nematologica – Brill
Published: Jan 1, 1977
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