Comparative analysis of development and survival of two Natal fruit fly Ceratitis rosa Karsch (Diptera, Tephritidae) populations from Kenya and South Africa

Abstract

Comparative analysis of development and survivorship of two geographically divergent populations of the Natal fruit fly Ceratitis rosa Karsch designated as Ceratitis rosa R1 and Ceratitis rosa R2 from Kenya and South Africa were studied at seven constant temperatures (10, 15, 20, 25, 30, 33, 35 °C). Temperature range for development and survival of both populations was 15–35 °C. The developmental duration was found to significantly decrease with increasing temperature for Ceratitis rosa R1 and Ceratitis rosa R2 from both countries. Survivorship of all the immature stages of Ceratitis rosa R1 and Ceratitis rosa R2 from Kenya was highest over the range of 20–30 °C (87–95%) and lowest at 15 and 35 °C (61–76%). Survivorship of larvae of Ceratitis rosa R1 and Ceratitis rosa R2 from South Africa was lowest at 35 °C (22%) and 33 °C (0.33%), respectively. Results from temperature summation models showed that Ceratitis rosa R2 (egg, larva and pupa) from both countries were better adapted to low temperatures than R1, based on lower developmental threshold. Minimum larval temperature threshold for Kenyan populations were 11.27 °C and 6.34 °C (R1 and R2, respectively) compared to 8.99 °C and 7.74 °C (R1 and R2, respectively) for the South African populations. Total degree-day (DD) accumulation for the Kenyan populations were estimated at 302.75 (Ceratitis rosa R1) and 413.53 (Ceratitis rosa R2) compared to 287.35 (Ceratitis rosa R1) and 344.3 (Ceratitis rosa R2) for the South African populations. These results demonstrate that Ceratitis rosa R1 and Ceratitis rosa R2 from both countries were physiologically distinct in their response to different temperature regimes and support the existence of two genetically distinct populations of Ceratitis rosa. It also suggests the need for taxonomic revision of Ceratitis rosa, however, additional information on morphological characterization of Ceratitis rosa R1 and Ceratitis rosa R2 is needed.

Threshold temperatures and thermal requirements of black soldier fly Hermetia illucens: Implications for mass production

“…The estimated lower temperature developmental threshold (LTDT) of BSF eggs according to the linear model was 13.65°C. Here, we publish the first report on lower developmental threshold temperatures of BSF immature life stages, which are consistent with reports of other dipteran species like tephritid fruit flies [ 23 , 28 ]. The divergence observed between the different reported LTDTs may be attributed to variations in rearing conditions and possible feedstocks utilized as food for the BSF larvae [ 67 ].…”

The chromosomes and the mitogenome of Ceratitis fasciventris (Diptera: Tephritidae): two genetic approaches towards the Ceratitis FAR species complex resolution

“…Pluralistic approaches have been also followed for species delimitation within species complexes of other Tephritidae genera, such as the Anastrepha fraterculus complex 18, 30–35 . In this context, the issue of the number and the limits of species within the FAR complex has been recently addressed by an integrative approach on the basis of: (i) adult and larvae morphology 36, 37 , (ii) wing morphometrics 38 , (iii) microsatellite analysis 8 , (iv) cuticular hydrocarbons 39 , (v) pheromones 40 , (vi) developmental physiology 41 and (vii) geographical and altitudinal distribution 42 . The above analysis supported the species identity of C .…”

Sensibilidade e tolerância térmica da mosca-das-frutas Anastrepha sp. 1 aff. fraterculus (Diptera: Tephritidae)

“…Usually, the TPC rising phase is attributed to thermodynamic effects and the decline of performance is due to protein denaturation (Hochachka and Somero, 2002;Rezende and Bozonovic, 2019;Schute et al, 2011). This same pattern of TPC has been described for development rate of different species of Tephritidae group, including the olive fruit fly Bactrocera oleae (Wang et al, 2012), immature stages of Ceratitis rosa from South Africa and Kenya (Tanga et al, 2015) and different stages of Bactrocera correcta (Liu and Ye, 2009). These results suggest that the same thermodynamic principles might be applicable for different biological process and developmental stages.…”