Cell construction and egg-laying inTrigona nigra paupera with a note on the adaptive significance of oviposition behaviour of stingless bees

1984 ◽  
Vol 31 (2) ◽  
pp. 199-217 ◽  
Author(s):  
M. J. Sommeijer ◽  
J. L. Houtekamer ◽  
W. Bos
Keyword(s):  
Stingless Bees ◽  
Adaptive Significance ◽  
Egg Laying ◽  
Oviposition Behaviour ◽  
Cell Construction

The distribution of the eggs of Mammalian Lice on their hosts. 2. Analysis of the Oviposition behaviour of Damalinia ovis (L)

1957 ◽  
Vol 5 (1) ◽  
pp. 19 ◽  
Author(s):  
MD Murray
Keyword(s):  
Temperature Gradient ◽  
Tactile Stimulus ◽  
Egg Laying ◽  
Oviposition Behaviour ◽  
Behaviour Pattern ◽  
Optimum Temperature ◽  
Depressant Effect ◽  
Temperature Zone ◽  
Stage 1 ◽  
Physical Features

The behaviour pattern of Damalinia ovis (L.) is adapted to the physical features of the environment in which the louse lives. In stage 1, the louse was attracted to temperatures between 35 and 40�C and this temperature zone was necessary for oviposition to proceed satisfactorily. Optimum temperature conditions were between 37 and 39�C. In stage 2, the louse orientated itself so that its head was directed towards the warm end of a temperature gradient or towards the saturated end of a humidity gradient, but when these gradients were antagonistic the orientation to temperature dominated. At the commencement of stage 3, the louse reversed its orientation to both temperature and humidity gradients but again the attraction to temperature was dominant. Before egg laying commenced, a fibre of suitable diameter had to be caught by a gonopod and held next to the abdomen. The resulting tactile stimulus was critical and its absence inhibited oviposition. Other factors which influenced oviposition were the depressant effect of high humidities, the orientation to light, and the attraction to other ovipositing lice and eggs.

scholarly journals Egg-laying preference for ethanol involving learning has adaptive significance inDrosophila melanogaster

2000 ◽  
Vol 28 (2) ◽  
pp. 187-194 ◽  
Author(s):  
N. Cadieu ◽  
L. El Ghadraoui ◽  
J. -C. Cadieu
Keyword(s):  
Adaptive Significance ◽  
Egg Laying

The distribution of the eggs of Damalinia equi (Denny) and Haematopinus asini (L) on the Horse.

1957 ◽  
Vol 5 (2) ◽  
pp. 183 ◽  
Author(s):  
MD Murray
Keyword(s):  
Skin Temperature ◽  
Natural Environment ◽  
Egg Laying ◽  
Lateral Distribution ◽  
Oviposition Behaviour ◽  
Severe Reduction ◽  
The Face ◽  
Do So

The eggs of Damalinia equi (Denny) and Haematopinus asini (L.) are attached to the hairs close to the skin with the end of attachment nearest to the skin. The oviposition behaviour of D. equi is similar to that of D. ovis (L.). The only observable differences are that the gonopods are not used at the time of egg laying and the fibre is grasped by the claspers. Temperatures between 32 and 38�C are required for the maximum number of lice in a population to oviposit. Skin temperature can determine the lateral distribution of the eggs in the natural environment. A fibre of suitable diameter is also necessary. D. equi cannot attach its eggs to the coarse hairs of the face, mane, tail, and legs whereas H. asini is able to do so. As the coarse hairs of the mane, tail, and legs are not shed with the fine hairs of the coat at the beginning of summer and winter the shedding of the coat effects a more severe reduction of the population of D. equi than of H. asini.

scholarly journals Testing for congruence between the oviposition behaviour of leaf-mining insects and the degree of phylogenetic relatedness among either mining species or hosts species: a case study within the mining moth genus Phyllonorycter (Lepidoptera: Gracillariidae)

2019 ◽  
Vol 1 (1) ◽  
pp. 004-009
Author(s):  
Jean Béguinot
Keyword(s):  
Host Species ◽  
Egg Laying ◽  
Oviposition Behaviour ◽  
Leaf Miners ◽  
Phylogenetic Relatedness ◽  
Leaf Mining ◽  
The Family ◽  
Host Tree Species ◽  
Respective Host

In leaf-mining insects, the oviposition behaviour is especially critical for the welfare of the future brood, the latter being usually doomed to develop entirely within the host-leaf selected for egg-laying by the ovipositing females. As, moreover, oviposition behaviour in leaf miners depends upon the taxonomic identities of both the mining-insect and the host, one can thus speculate that the patterns of oviposition behaviour of different leaf-mining species could be more or less congruent with either the degree of phylogenetic relatedness of the leaf-mining species themselves or the degree of phylogenetic relatedness of their respective host-species. Here, I test successively these two hypotheses – the “miners phylogenetic relatedness” hypothesis and the “hosts phylogenetic relatedness” hypothesis – by addressing a system insect-plant involving four mining moth species (all four belonging to the genus Phyllonorycter) and the three corresponding host-tree species, all included within the family Betulaceae. It turns out that, for this system at least, neither of the two previous hypotheses is actually supported. Possible reasons for this double rejection are discussed accordingly.

Oviposition Behaviour of the Jack-pine Sawfly, Neodiprion americanus banksianae Roh., as Indicated by an Analysis of Egg Clusters

1955 ◽  
Vol 87 (6) ◽  
pp. 229-238 ◽  
Author(s):  
A. W. Ghent
Keyword(s):  
Jack Pine ◽  
Egg Laying ◽  
Oviposition Behaviour ◽  
Pine Sawfly ◽  
Large Numbers ◽  
Measurement And Analysis ◽  
Full Complement ◽  
Group Feeding ◽  
Indirect Information ◽  
Larval Group

This study was undertaken as part of a broader investigation of the behaviour of the jack-pine sawfly, Neodiprion americanus banksianae Roh. The greater part of the investigation was directed towards an understanding of larval group-feeding behaviour, but in order to clarify the situation in which this insect begins larval life, large numbers of egg clusters were analysed with special attention paid to the positional relations of egg-bearing needles. Such analysis has permitted certain inferences on the oviposition behaviour of this insect and this indirect information is of value in view of the difficulties experienced in efforts to induce this species to oviposit under laboratory conditions for direct observation. Fortunately, egg clusters obtained from the field are well adapted to descriptive measurement and analysis, for in order to lay its full complement of eggs the adult female sawfly must select as many as 20 to 30 needles, thus leaving behind it a readily measured record of its egg-laying behaviour.

scholarly journals Host acceptance and oviposition behaviour of solitary wasp, Anisopteromalus calandrae (Howard) (Hymenoptera : Pteromalidae), A parasitoid of stored grain pests

2018 ◽  
Vol 46 (2) ◽  
pp. 205-216
Author(s):  
KN Ahmed ◽  
CK Roy ◽  
JL Munshi ◽  
EA Zenat ◽  
SK Ghose
Keyword(s):  
Sitophilus Oryzae ◽  
Egg Laying ◽  
Oviposition Behaviour ◽  
Rhyzopertha Dominica ◽  
Host Acceptance ◽  
Seed Kernel ◽  
Stored Grain ◽  
Wheat Kernel ◽  
Anisopteromalus Calandrae ◽  
Wheat Kernels

The host acceptance and oviposition behaviour of the ectoparasitoid, Anisopteromalus calandrae (Howard) (Hymenoptera : Pteromalidae) was observed on unexposed (hidden) and exposed host of Sitophilus oryzae (L.) and Rhyzopertha dominica (F.) under laboratory conditions. The egg-laying behaviour was accomplished in eight phases in hidden hosts of S. oryzae i.e., inside wheat kernels but it was much shorter having five steps in those of exposed hosts. Average total time taken by a mated A. calandrae in unexposed host (inside wheat kernels) during different oviposition sequences was 55 minutes. On the other hand, average total time taken by a mated A. calandrae in exposed host of S. oryzae during oviposition sequences was 91.1 minutes. A. calandrae preferred fully developed S.oryzae grubs rather than half- grown pre-pupae and early pupae in exposed condition. Generally, eggs were laid on or near S. oryzae host larvae or pupae inside wheat kernel because of ectoparasitic nature of A. calandrae. More eggs are deposited in case of S. oryzae hosts at the abdominal region dorsally, sometimes eggs were laid on the meta-thoracic segment dorsally but rarely eggs were laid on late S. oryzae pupae prior to adult transformation. Oviposition by a mated A. calandrae female parasitoid was influenced by the host’s size and shape on exposed as well as unexposed (within seed kernel) conditions. Generally, the 3rd and the 4th instar larvae and pre-pupae of S. oryzae were preferred for egglaying in exposed condition. The parasite did not lay eggs on naked R. dominica larvae or pupae. Bangladesh J. Zool. 46(2): 205-216, 2018

Evidence of density-dependent oviposition behaviour byListronotus bonariensis(Coleoptera: Curculionidae) in Canterbury pasture

1998 ◽  
Vol 88 (5) ◽  
pp. 527-536 ◽  
Author(s):  
M.R. McNeill ◽  
D.B. Baird ◽  
S.L. Goldson
Keyword(s):  
Biological Control ◽  
Field Experiments ◽  
Adult Population ◽  
Egg Laying ◽  
Oviposition Behaviour ◽  
Initial Population ◽  
Adult Density ◽  
Control Effort ◽  
Density Dependent ◽  
Age Related

AbstractArgentine stem weevil (Listronotus bonariensis) (Kuschel) is a pasture pest ofLoliumspp. in New Zealand and is the target of a classical biological control programme using the parasitoidMicroctonus hyperodaeLoan. However, laboratory experiments have indicated a strong density-dependent egg laying response which may have important implications for the biological control effort. Two field experiments were conducted using a manipulated range of weevil densities within 2.0–2.4 m–2field enclosures and oviposition activity measured by weekly sampling of grass tillers within the enclosures. In both experiments, density had no effect on general oviposition behaviour although the percentage of tillers found to be infested with eggs increased significantly at higher densities. In experiment 1,L. bonariensisexhibited strong density-dependent oviposition with a significant decline in eggs/tiller/female with increasing adult density. An initial population of fiveL. bonariensism−2oviposited 32 times more eggs/tiller/female than 200L. bonariensism−2. By comparison, density-dependent oviposition was absent in experiment 2 with eggs/tiller/female comparable for all densities. The dramatic difference between the two experiments in the expression of density-dependent oviposition was attributed to prevailing spring temperatures during the sampling interval, which in the second experiment were much cooler and delayed the onset of egg laying. It is probable that in experiment 2, oviposition was not regulated by density-dependent cues but limited by temperature and age related mortality in the adult population. The mechanism for density-dependent oviposition, its occurrence in the field and impact on the effectiveness of the parasitoidM. hyperodaeare discussed.

Oviposition preferences of dengue vectors; Aedes aegypti and Aedes albopictus in Sri Lanka under laboratory settings

2017 ◽  
Vol 108 (4) ◽  
pp. 442-450 ◽  
Author(s):  
N. Gunathilaka ◽  
T. Ranathunge ◽  
L. Udayanga ◽  
A. Wijegunawardena ◽  
W. Abeyewickreme
Keyword(s):  
Sri Lanka ◽  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Human Life ◽  
Water Source ◽  
Egg Laying ◽  
Oviposition Behaviour ◽  
Potential Threat ◽  
Female Ratio ◽  
Dengue Vectors

AbstractInvestigations on oviposition behaviour of dengue vectors are critical for effective controlling of vector breeding. Therefore, the aim of the present study was to determine the oviposition behaviour of dengue vectors, Aedes aegypti and Aedes albopictus in Sri Lanka. Batches of 1000 adult mosquitoes (1 : 1, male: female ratio) housed in rearing cages were used for each experimental setup from Ae. aegypti and Ae. albopictus. Oviposition responses with respect to the size of the ovitrap, colours of the ovitrap, water source, sodium chloride (NaCl) concentration and presence/absence of larvae were evaluated by enumerating the number of eggs laid in the ovitraps. The analysis of variance and cluster analysis were used to investigate the significance in the variations among oviposition. The number of eggs laid by both species were improved with the increasing size of ovitraps. Ae. albopictus indicated the highest mean number of eggs in 0.2% of NaCl than in the ovitraps filled with distilled water. However, the egg laying preference was reduced with increasing salinity in both species. Drain water with low dissolved oxygen (DO) level (0.43 ± 0.12 mg l−1) was the preferred water source for both species, while a significantly high oviposition rate was observed in ovitraps with larvae. Black colour ovitraps attracted the majority of gravid females, while white was least preferred. There were no significant variations among oviposition behaviours of Ae. albopictus and Ae. aegypti. The ability of these vectors to breed in waste water with low DO levels may lead them to attain wide dissemination in the natural environment, enhancing their potential threat to human life.

scholarly journals Five egg-laying queens in a single colony of brazilian stingless bees (Melipona scutellaris Latreille

2011 ◽  
Vol 41 (1) ◽  
pp. 123-126 ◽  
Author(s):  
Carlos Alfredo Lopes de Carvalho ◽  
Bruno de Almeida Souza ◽  
Carleandro de Souza Dias ◽  
Rogério Marcos de Oliveira Alves ◽  
Alex Fábio de Lima Melo ◽  
...  
Keyword(s):  
Stingless Bees ◽  
Egg Laying ◽  
Single Colony ◽  
First Case

Polygyny, characterized by the presence of several egg-laying queens, is considered as a temporary colony status. In stingless bees it is rarely observed. This paper reports the first case of natural polygyny in Melipona scutellaris colony, with five egg-laying queens.

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