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6 results for “Drosophila sp.”
Linked collectors and determiners for: Drosophila (Sophophora) carrolli n. sp., a new species from Brunei, closely related to Drosophila (Sophophora) rhopaloa Bock & Wheeler, 1972 (Diptera: Drosophilidae).
Natural history specimen data linked to collectors and determiners held within, "Drosophila (Sophophora) carrolli n. sp., a new species from Brunei, closely related to Drosophila (Sophophora) rhopaloa Bock & Wheeler, 1972 (Diptera: Drosophilidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/080903f9-fb09-4979-ab23-db718283e177">https://bionomia.net/dataset/080903f9-fb09-4979-ab23-db718283e177</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/080903f9-fb09-4979-ab23-db718283e177">https://gbif.org/dataset/080903f9-fb09-4979-ab23-db718283e177</a>. Formatted as a Frictionless Data package.
Data from: The consequences of genetic variation in male sex peptide gene-expression levels for SP retention and egg laying in female Drosophila
The accessory gland proteins (Acps) that male Drosophila melanogaster produce and transfer to females during copulation are key to male and female fitness. One Acp, the sex peptide (SP), is largely responsible for a dramatic increase in female egg laying and decrease in female receptivity after copulation. While genetic variation in male SP expression levels correlate with refractory period duration in females, it is unknown whether male SP expression influences female egg laying or if any effect of SP is mediated by SP retention in the female reproductive tract. Here we measured the amount of SP retained in the female reproductive tract after mating and female egg laying after copulating with virgin males. We found no correlation between male SP expression levels and egg laying, or the amount of SP in the female reproductive tract after mating. Additionally, the amount of SP retained in the female did not influence egg laying. These finding suggests that additional factors, such as variation in other Acps, are important for the retention of SP in females and its quantitative effects on egg laying. It also shows that egg laying and refractory period response to SP is at least partially uncoupled.
FIGURE 3 in Drosophila (Sophophora) carrolli n. sp., a new species from Brunei, closely related to Drosophila (Sophophora) rhopaloa Bock & Wheeler, 1972 (Diptera: Drosophilidae)
FIGURE 3. Female terminalia, eggs and pupae. (A, A', B) last abdominal segments and spermatheca of D. carrolli (A, A') or D. rhopaloa (B) females. Note the strongly sclerotized plates (blue arrowheads) at the end of the oviduct in D. carrolli (A, A'), but not D. rhopaloa (B). Also note the teeth (bristles) on the egg-guides are slightly more numerous and stouter in D. carrolli (blue arrows). The rear view of a D. carrolli female laying an egg (A') shows the relative position of the sclerotized plates, the anal plates and the ovipositor. The spermathecae are marginally bigger and darker in age-matched D. carrolli compared to D. rhopaloa. (C, D) eggs of D. carrolli (C) and D. rhopaloa (D) in ventral view. Both species show characteristic spatula-shape respiratory appendages. These appendages vary in shape within species but show no notable difference between species. (E, F) pupae of D. carrolli (A) or D. rhopaloa (B) males about 24 hours before adult emergence. D. carrolli pupae are more rounded on their sides.
FIGURE 2. Male terminalia. Dissected parts from D in Drosophila (Sophophora) carrolli n. sp., a new species from Brunei, closely related to Drosophila (Sophophora) rhopaloa Bock & Wheeler, 1972 (Diptera: Drosophilidae)
FIGURE 2. Male terminalia. Dissected parts from D. carrolli (A, C, E, G) or D. rhopaloa (B, D, F, H). (A, B) epandrium in dorsal view. Note the differences in sensory bristle length and distribution (blue ovals and arrowheads) as well as genital comb size (blue arrows) between species. The epandrium is always darker overall in D. carrolli. Phallus in ventral view (C, D) and side view (E, F). The phallus conformation in D. carrolli (C, E) is similar to that of D. rhopaloa (D, F), but shows quantitative difference in size and appears sturdier. The looping of the aedeagus base is more open in D. carrolli than in D. rhopaloa (blue double-arrows). (G, H), testes of D. carrolli (G) and D. rhopaloa (H) have similar shapes and coiling, but they appear bigger in D. carrolli, and show a characteristic bright yellow color compared to the dull yellow testes of D. rhopaloa.
FIGURE 1 in Drosophila (Sophophora) carrolli n. sp., a new species from Brunei, closely related to Drosophila (Sophophora) rhopaloa Bock & Wheeler, 1972 (Diptera: Drosophilidae)
FIGURE 1. Adult morphology and geographical range. (A–D) dorsal views of 5–7 day old adult Drosophila carrolli (A, male; B, female) and D. rhopaloa (C, male; D, female). (E, F) male abdomens of D. carrolli (E) and D. rhopaloa (F) in lateral (left) and ventral (right) views, showing variation in pigmentation intensity and testes color in mature specimens. Note the sharp lateral boundary of the darkly pigmented area on segment A5 and A6 in D. rhopaloa, but not D. carrolli (green arrows). Also note the bright yellow testes of D. carrolli, contrasting with the paler testes of D. rhopaloa (green arrowheads). (G, H) female abdomens of D. carrolli (G) and D. rhopaloa (H) in lateral views, showing variation in pigmentation intensity in mature specimens. (I, J) male wings of D. carrolli (I) and D. rhopaloa (J). Note the darker pigmentation at the anterior distal tip of of D. carrolli but not D. rhopaloa wings. (K, L) right antennae of males, showing no notable difference in the arista branching between D. carrolli (K) and D. rhopaloa (L), but a relatively shorter 3rd antennal segment in D. rhopaloa (double arrows). (M, N) sex combs on the 1st and 2nd tarsal segments of forelegs in D. carrolli (M) and D. rhopaloa (N) showing no notable differences in teeth shape or pattern. Note that image on panel M is modified from Barmina & Kopp (2007). (O) Map of South East Asia showing localities where D. rhopaloa (white circles) and D. carrolli (red circle) were found. The circle with dotted outline denotes an imprecise locality.
Data from: The consequences of genetic variation in male sex peptide gene-expression levels for SP retention and egg laying in female Drosophila
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