Reproduction annd development of Neosilurus ater (Perugia) and Neosilurus hyrtlii Steindachner (Teleostei : Plotosidae) in a tropical Queensland stream

1984 ◽  
Vol 35 (2) ◽  
pp. 187 ◽  
Author(s):  
TM Orr ◽  
NE Milward
Keyword(s):  
Larval Development ◽  
Food Availability ◽  
Mating Behaviour ◽  
Adaptive Significance ◽  
Tropical Streams

The reproduction and development of two plotosid catfishes, N. ater and N. hyrtlii, were investigated in a seasonal tributary of the Ross River, northern Queensland. The fishes were observed to move upstream to spawn during monsoonal flooding. Their mating behaviour, embryology and larval development are described. The adaptive significance of a flood-spawning strategy is discussed in relation to food availability, predation, and aeration in seasonal tropical streams.

scholarly journals Stable isotope labelling of Ceratitis capitata

2018 ◽  
Vol 55 (No. 1) ◽  
pp. 54-60 ◽  
Author(s):  
Hasan Al-Khshemawee ◽  
Manjree Agarwal ◽  
Yonglin Ren
Keyword(s):  
Stable Isotopes ◽  
Larval Development ◽  
Ceratitis Capitata ◽  
Mating Behaviour ◽  
Fruit Fly ◽  
Adult Survival ◽  
Stable Isotope Labelling ◽  
Egg Hatching ◽  
Sugar Water ◽  
Hatching Rates

The use of stable isotopes to label an insect species, the Mediterranean fruit fly Ceratitis capitata (Diptera: Tephidae) (medfly) was investigated. Labelling allows mating and life history characteristics to be investigated experimentally. <sup>13</sup>C<sub>6</sub>-glucose was incorporated into the diet of medflies at various stages of development by adding it to larval media or providing adults with sugar water. Data was collected from egg hatching until the death of adults. The results show that stable isotopes successfully labelled medflies in laboratory conditions. There were significant differences between labelled and unlabelled treatments in terms of eggs hatching rates, larval development, pupae emergence, adult survival, and mating behaviour. Labelling during larval development, and combined labelling at the larval and adult stages, resulted in detectable values. Labelling in the larval stage had no effect on mating behaviour, but that in the adult stage did. This study demonstrates that it is possible to label adult medflies and to detect the label after mating.

Ocean warming modulates the effects of limited food availability on Paracentrotus lividus larval development

2015 ◽  
Vol 162 (7) ◽  
pp. 1463-1472 ◽  
Author(s):  
Eliseba García ◽  
Sabrina Clemente ◽  
Cataisa López ◽  
Justin S. McAlister ◽  
José Carlos Hernández
Keyword(s):  
Larval Development ◽  
Food Availability ◽  
Paracentrotus Lividus ◽  
Ocean Warming ◽  
Limited Food

scholarly journals Mating behaviour, mate choice and female resistance in the bean flower thrips (Megalurothrips sjostedti)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Adeyemi O. Akinyemi ◽  
Sevgan Subramanian ◽  
David K. Mfuti ◽  
Tom W. Pope ◽  
Amanuel Tamiru ◽  
...  
Keyword(s):  
Mate Choice ◽  
Mating Behaviour ◽  
Female Mate Choice ◽  
Adaptive Significance ◽  
Sub Saharan Africa ◽  
Mating Status ◽  
Megalurothrips Sjostedti ◽  
Flower Thrips ◽  
Thrips Species ◽  
Sub Saharan

AbstractMany species of thrips (Thysanoptera) in the family Thripidae form mating aggregations, but the adaptive significance of these aggregations and the extent of male and female mate choice is poorly understood. We studied the mating behaviour of the bean flower thrips Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae), which forms male aggregations and occurs across sub-Saharan Africa. We tested whether males choose mates by female age or mating status. No-choice mating bioassays with one male and one female were used to simulate the way males usually encounter only one female at a time in aggregations in the field. Virgin females violently resisted mating attempts by males, but we found no compelling evidence to establish whether this was indiscriminate or was screening suitable males. Younger males (1–2 days old) did not discriminate females by age (1–2 or 7–10 days old), but older males (7–10 days old) avoided mating with older females. Any male choice by female mating status (virgin or mated) was weak or absent. The mating behaviour of M. sjostedti shows broad similarities with that of other thrips species that form aggregations, but also shows some distinct and novel differences, which can help our understanding of the adaptive significance of aggregations.

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