part_of
preceded_by
starts_at_end_of
cleavage stage
A collective term for stages 1-4.
late extended germ band stage
A collective term for stages 11 and 12.
oogenesis stage
developmental stage
A temporal subdivision of a developmental process.
oogenesis stage S1
Earliest stage of ovarian cyst development - lasts while the 16 cell cyst is within the germarium (region 3).
oogenesis stage S2
Oogenesis stage that begins when the cyst leaves the germarium (from this point the cyst is referred to as an egg chamber). During this stage, polyploidation of the nurse cells begins, they reach a ploidy of 8C, and follicle cells start to divide.
oogenesis stage S3
Oogenesis stage that begins when the oocyte chromosomes condense into a karyosome attached to a distinctive spherical structure known as an endobody. The oocyte nucleolus disappears completely. During this stage, nurse cell ploidy reaches 16C.
oogenesis stage S4
Oogenesis stage that begins when the nurse cells chromosomes become bulbous. Nurse cell chromosomes during this stage are polytene and reach a ploidy of 32C. The egg chamber is oval shaped.
oogenesis stage S5
Oogenesis stage that begins when nurse cell chromosomes are no longer bulbous - the association between homologs weakens so that these chromosomes no longer have a polytene structure. During this stage, posterior nurse cell nuclei have a higher ploidy (64C) than anterior ones.
oogenesis stage S6
Oogenesis stage during which follicle cell division ceases.
oogenesis stage S7
Oogenesis stage during which polyploidation and enlargement of follicle cells begins. Nurse cell ploidy ranges from 256C (anterior) to 512C (posterior) and the egg chamber gains an elongated shape.
oogenesis stage S8
Oogenesis stage which begins when yolk first appears in the oocyte. Follicle cell migration over the oocyte begins during this stage (although mostly occurs during stage 9).
oogenesis stage S9
Oogenesis stage that begins when the border cells begin to migrate. During this stage: the oocyte is about 1/3 the length of the egg chamber with its nucleus located antero-dorsally; follicle cell migration results in an anterior to posterior gradient of follicle cell thickness with posterior cells being thicker (-> columnar) and posterior cells thinner ( -> squamous); border cell migration begins and ends; secretion of vitelline membrane begins.
oogenesis stage S10
oogenesis stage S10A
Oogenesis which begins when all the oocyte associated follicular epithelium is columnar and all of the nurse cell associated follicular epithelium is completely squamous. During this stage, the migrating border cells reach the oocyte. The oocyte is about 50% egg chamber length.
oogenesis stage S10B
Oogenesis stage that begins when the centripetal follicle cells begin to migrate. As a result, the vitelline membrane extends into the opercular region.
oogenesis stage S11
Oogenesis stage that begins when nurse cell dumping begins and development of the wax layer begins. The dorsal appendages begin to form during this stage.
oogenesis stage S12
Oogenesis stage that begins when dying nurse cells form an anterior cap to the oocyte. Shortly after this, nurse cell dumping and growth of the oocyte are complete. Elongation of the dorsal appendages and formation of the innermost chorionic layer and endochondrion begins during this stage.
oogenesis stage S12A
Innermost chorionic layer and endochondrion begin to form in the anterior of the follicle.
oogenesis stage S12B
Secretion of innermost chorionic layer and endochondrion begins in the main follicle cells.
oogenesis stage S12C
Formation of specialized endochondrion structures in the anterior of the follicle: branches in the developing dorsal appendages; compact endochondrion lacking the pillars seen in the rest of the follicle.
oogenesis stage S13
Oogenesis stage that begins when the micropile begins to form. At the beginning of this stage, about 12-15 nurse cell nuclei remain at the anterior of the oocyte. By the end of this stage, none of these nuclei remain. Oocyte meiosis up to arrest at full metaphase I occurs during this stage.
oogenesis stage S13A
Temporal ordering number - 10210. An alternative division of stage 13 into two sub-stages, A and B, has been defined on the basis of chorion development (see FBrf0043885). This ontology uses an alternative subdivision based on nurse cell nucleus number and oocyte meiosis, as the former at least, is easier to score than chorion ultrastructure.
Oogenesis stage during which 12-15 nurse cell nuclei remain at the anterior of the oocyte. At this stage, the oocyte nucleus has reached its maximum volume and its chromosomes are compressed into a 5-7 micrometer karyosome.
oogenesis stage S13B
Temporal ordering number - 10220. An alternative division of stage 13 into two sub-stages, A and B, has been defined on the basis of chorion development (see FBrf0043885). This ontology uses an alternative subdivision based on nurse cell nucleus number and oocyte meiosis, as the former at least, is easier to score than chorion ultrastructure.
Oogenesis stage during which 9-11 nurse cell nuclei remain at the anterior of the oocyte. During this stage, the nuclear membrane of the oocyte nucleus disappears, indicating the start of meiotic pro-metaphase.
oogenesis stage S13C
Oogenesis stage during which only 7-8 nurse cell nuclei remain at the anterior of the oocyte. At the beginning of this stage, oocyte chromosome bivalents separate from each other - indicating mid-prometaphase of oocyte meiosis.
oogenesis stage S13D
Oogenesis stage during which only 5-6 nurse cell nuclei remain at the anterior of the oocyte. The oocyte nucleus is in late prometaphase:the bivalents arrange themselves in on the equatorial plane of the spindle; homologous centromeres are pulled towards the poles.
oogenesis stage S14
The last stage of oogenesis. This stage begins when no nurse cell nuclei remain at the anterior of the egg (chamber). Exochorion formation and secretion occurs during this stage. The dorsal appendages complete their elongation and the follicle cells die.
oogenesis stage S14A
Secretion and formation of the outer endochorionic network by throughout the follicle. Crystallization of the innermost chorionic layer of the main body follicle cells.
oogenesis stage S14B
Secretion of the exochorion begins and ends.
egg stage
unfertilized egg stage
fertilized egg stage
embryonic stage
pre-blastoderm stage
pre-blastoderm
Embryonic stage 1-3.
embryonic stage 1
Nuclear divisions 1 and 2. Duration at 25 degrees C: approximately 25 minutes (0-25 minutes after egg laying).
embryonic cycle 1
The first nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic stage 2
Nuclear divisions 3-8. The egg cytoplasm contracts producing a clear separation from the vitelline membrane and empty spaces at the anterior and posterior. The cleavage nuclei migrate towards the periphery. Duration at 25 degrees C approximately 40 minutes (25-65 minutes AEL).
embryonic cycle 2
The second nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 3
The third nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 4
The fourth nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 5
The fifth nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 6
The sixth nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 7
The seventh nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 8
The eight nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic stage 3
Nuclear division 9. The cleavage nuclei complete their migration to the periphery. Polar buds form at the posterior pole and divide once. Duration at 25 degrees C: approximately 15 minutes (65-80 minutes after egg laying).
embryonic cycle 9
The ninth nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 10
The tenth nuclear division of embryogenesis. This division is synchronous across the embryo.
blastoderm stage
blastoderm
Embryonic stages 4 and 5.
syncytial blastoderm stage
embryonic stage 4
syncytial blastoderm
Nuclear division 10-13. Polar buds divide twice and become tightly grouped at the posterior pole by the end of this stage. Nuclei visible at the rim of the embryo. Stage 4 ends with the beginning of cellularization. Duration at 25 degrees C: approx. 50 minutes (80-130 minutes after egg laying).
embryonic cycle 11
The 11th nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 12
The 12th nuclear division of embryogenesis. This division is synchronous across the embryo.
embryonic cycle 13
The 13th nuclear division of embryogenesis. This is the last synchronous division.
cellular blastoderm stage
embryonic stage 5
Cellularization. Stage 5 begins when cellularization starts. Near the end of this stage the pole cells begin to migrate dorsally and ventral midline cells acquire an irregular, wavy appearance. Stage 5 ends when ventral furrow formation becomes apparent. Duration at 25 degrees: approximately 40 minutes (130-170 minutes after egg laying).
cellular blastoderm
embryonic cycle 14
first blastoderm mitosis
The 14th nuclear division of embryogenesis. This is the first round of nuclear division to occur in a cellularized embryo, so this is the first round of cell division. Cycle 14 is asynchronous across the embryo, but occurs synchronously within discrete domains, known as mitotic domains.
embryonic cycle 14A
embryonic cycle 14B
embryonic cycle 15
The 15th nuclear division of embryogenesis. Asynchronous.
second blastoderm mitosis
embryonic cycle 16
third blastoderm mitosis
The 16th nuclear division of embryogenesis. Asynchronous.
gastrula stage
Stages during which gastrulation occurs. 6-8.
gastrula
embryonic stage 6
Stage 6 begins when the ventral furrow becomes apparent, an event which is followed rapidly by the formation of the cephalic furrow. Stage 6 ends when the pole cells have adopted a dorsal (horizontal) position at the posterior. Duration at 25 degrees C: approximately 10 minutes (170-180 minutes after egg laying).
embryonic stage 7
Stage 7 begins when the pole cells have adopted a dorsal (horizontal) position at the posterior. Invagination of the anterior and posterior midgut and hindgut follows. The 'discoid plate' that carries the pole cells forms a pocket. Transverse furrows (dorsal folds) form on the dorsal surface. This stage ends when the anterior wall of the amnioproctodeal invagination starts moving anteriorly and the pole cells are no longer visible externally. Duration at 25 degrees C: approximately 10 minutes (180-190 minutes after egg laying).
germ band stage
extended germ band stage
Stages during which the germ band is extended - 9-12.
embryonic stage 8
rapidly extending germ band stage
Stage 8 starts with the rapid phase of germ band extension and ends with the beginning of mesodermal segmentation. By the end of this stage germ band extension has progressed to the point where the proctodeal opening is at about 60% egg length and the dorsal folds (transverse furrows) are no longer visible. Duration at 25 degrees C: approximately 30 minutes (190-220 minutes after egg laying).
embryonic stage 9
Stage 9 begins when mesodermal segmentation becomes (transiently) visible, and ends with the appearance of the stomodeal invagination slightly ventral to the anterior pole. Duration at 25 degrees C: approximately 40 minutes (220-260 minutes after egg laying).
embryonic stage 10
Stage 10 begins with the appearance of the stomodeal invagination, slightly ventral to the anterior pole. Periodic furrows appear in the embryonic epidermis around the middle of the stage. The germ band continues to extend, reaching its maximum extent of 75% egg length towards the end of the stage. The end of the stage is marked by the beginning of invagination of the tracheal placodes. Duration at 25 degrees : approximately 60 minutes (260-320 minutes after egg laying).
embryonic stage 11
Stage 11 begins with the invagination of the tracheal placodes. Para-segmental furrow form and segment boundary furrows become deep folds. Within the head, gnathal protuberances become apparent. The end of this stage is signaled by the appearance of a distinct cleft at the posterior pole of the embryo, which becomes detached from the vitelline membrane. This marks the beginning of germ-band retraction. Duration at 25 degrees C: approximately 120 minutes (320-440 minutes after egg laying).
contracted germ band stage
embryonic stage 12
Germ band retraction. Stage 12 begins when germ-band retraction starts and ends when this process is complete so that the prospective anal plate occupies the posterior pole. During this stage the posterior and anterior hindgut primordia meet and fuse and the tracheal pits fuse to form the tracheal tree. Duration at 25 degrees C: approximately 120 minutes (440-560 minutes after egg laying).
retracting germ band stage
embryonic stage 13
Stage 13 begins at the completion of germ-band retraction, when the prospective anal plate occupy the posterior pole. The dorsal ridge becomes apparent externally; the clypeolabrum retracts, leaving a triangular shaped gap at the anterior pole; the labium moves to the ventral midline. This stage ends when head involution begins. Duration at 25 degrees C: Approximately 60 minutes (560-620 minutes after egg laying).
head involution stage
embryonic stage 14
Stage 14 begins with the initiation of head involution. Closure of the midgut around the yolk and dorsal closure continue. Dorsal closure is 80% complete by the end of this stage. This stage ends with the appearance of the second midgut constriction. Duration at 25 degrees C: approximately 60 minutes (620-680 minutes after egg laying)
dorsal closure stage
A collective term for stages 13-15.
embryonic stage 15
Stage 15 begins with the appearance of the second midgut constriction. During this stage the 1st and 3rd midgut constrictions form, dorsal closure is completed, and epidermal segmentation is accomplished. This stage ends when the intersegmental grooves can be distinguished at mid-dorsal level. Duration at 25 degrees C: approximately 100 minutes (680-780 minutes after egg laying).
late embryonic stage
Embryonic stages 16-17.
embryonic stage 16
Stage 16 begins when the intersegmental grooves can be distinguished at mid-dorsal level, and ends when the dorsal ridge (frontal sac) has overgrown the tip of the cylpeolabrum, which is thereby enclosed in the atrium. During this stage the ventral cord retracts to about 60% egg length. Duration at 25 degrees C: approximately 180 minutes (780-960 minutes after egg laying).
embryonic stage 17
Stage 17 begins when the dorsal ridge (frontal sac) has overgrown the tip of the cylpeolabrum, which is thereby enclosed in the atrium. It lasts until hatching of the embryo (approximately 24 hours after egg laying), during which time much terminal differentiation occurs, the tracheal tree fills with air, so becoming completely visible, and the ventral cord continues to retract. Duration at 25 degrees C: approximately 8 hours (960-1440 minutes after egg laying).
larval stage
first instar larval stage
The first larval instar begins at hatching and ends at the first larval molt. Anterior spiracles are not yet present; posterior spiracles have two openings each. Salivary glands are very small and all cells are uniform in size. Mouth hooks typically have one tooth. Duration at 25 degrees C: approximately 25 hours (24-49 hours after egg laying; 0-25 hours after hatching).
first instar larva
second instar larval stage
second instar larva
The second larval instar begins at the first larval molt and ends at the second larval molt. Larvae are actively feeding and crawling in the food. Distinct anterior spiracles are present as enlargements at the end of the tracheal trunk, but not open to the outside; posterior spiracles have three openings each, and four groups of small unbranched hairs. The salivary glands extend to the first abdominal segment, and have cells that are uniform in size. Mouth hooks typically have two or three teeth. Duration at 25 degrees C: approximately 23 hours (49-72 hours after egg laying; 25-48 hours after hatching).
third instar larval stage
third instar larva
The third larval instar begins at the second larval molt and ends at puparium formation. Anterior spiracles are open to the outside; posterior spiracles have three openings each, and four groups of large branched hairs. The salivary glands extend to the second abdominal segment, with cells larger in the posterior than in the anterior of the gland. Mouth hooks typically have 9-12 teeth. About 24 hours before pupariation (at 25 degree C), larvae stop feeding and climb away from their food. Duration at 25 degrees C: approximately 48 hours (72-120 hours after egg laying; 48-96 hours after hatching).
early third instar larval stage
Third instar larva prior to the wandering stage (approximately the first 24 hours of the third instar larval stage under standard conditions at 25'C.).
wandering third instar larval stage
late third instar
post-feeding larva
Stage of the third larval instar during which the larva wanders out of the food and climbs. Under optimum conditions at 25'C, this occurs approximately 24 hours after the start of the third instar larval stage.
prepupal stage
The prepupal stage begins at puparium formation and ends when larval/pupal apolysis is complete, as indicated by the completion of imaginal head sac eversion and the expulsion of the oral armature of the larva. Duration at 25 degrees C: approximately 12 hours. (120-132.2 hours after egg laying; 0-12.2 hours after puparium formation).
prepupal stage P1
pupal stage P1
puparium formation
pupal stage P0
white prepupa
Extends from puparium formation through tanning of the pupal cuticle. Posterior spiracles and ridge between anterior spiracles tan orange. Wriggling stops completely. Puparium becomes brown to the unaided eye. Duration at 25 degrees C: approximately 20 minutes. (120-120.3 hours after egg laying; 0-0.3 hours after puparium formation).
white puparium
prepupal stage P2
pupal stage P2
Male gonads become less distinct. Oral armature stops moving permanently. Dorsal medial abdominal contractions stop. Gas bubble becomes visible within abdomen. Duration at 25 degrees C: approximately 100 minutes. (120.3-122 hours after egg laying; 0.3-2 hours after puparium formation).
brown puparium
prepupal stage P3
bubble prepupa
pupal stage P3
Ridge of the operculum becomes distinct. Puparium begins to separate from underlying epidermis. Becomes positively buoyant. Duration at 25 degrees C: approximately 4 hours, 45 minutes. (122-126.75 hours after egg laying; 2-6.75 hours after puparium formation).
prepupal stage P4
Prepupal stage P4 begins as the lateral trunk trachea become obscured and ends when the imaginal head sac is everted and the oral armature of the larva is expelled. Duration at 25 degrees C: approximately 5 hours, 30 minutes. (126.75-132.2 hours after egg laying; 6.75-12.2 hours after puparium formation).
cryptocephalic pupa
pupal stage P4
prepupal stage P4(i)
Lateral trunk tracheae become obscured. Dorsal medial abdominal contractions occur. Everted leg and wing discs become visible. Bubble appears in posterior of puparium, displacing the pupa anteriorly; abdominal bubble disappears. Duration at 25 degrees C: approximately 5 hours, 15 minutes. (126.75-132 hours after egg laying; 6.75-12 hours after puparium formation).
pupal stage P4(i)
buoyant
prepupal stage P4(ii)
moving bubble
Bubble is displaced to anterior end of the puparium, and pupa withdraws to the posterior end. Imaginal head sac is everted and the oral armature of the larva is expelled. Duration at 25 degrees C: approximately 12 minutes. (132-132.2 hours after egg laying; 12-12.2 hours after puparium formation).
pupal stage P4(ii)
pupal stage
Temporal ordering number - 570. DISAMBIGUATION: In Drosophila lab vernacular, the term 'pupal stage' is often used to refer to the entire period from formation of the puparium to eclosion. However, this does not correspond to the standard usage of 'pupal stage' for Cyclorrhaphous flies (for discussion see: FBrf0087128). Briefly: formation of the puparium (hardening of the larval cuticle) marks the beginning of the pre-pupal stage. The pupal stage begins following pupal/larval apolysis - detachment of the larval epidermis from the puparium. In Drosophila, the outward sign of the completion of apolysis is the eversion of the head and expulsion of the larval mouthparts (FBrf0036849). We use P-stage to refer to the stage from pupariation to eclosion, and restrict pupal stage to its standard usage.
The pupal stage starts once larval/pupal apolysis is complete as indicated by the expulsion of the larval armature. Early in this stage, the legs and wings reach full extension along the abdomen. The stage ends when the pupal cuticle separates from the underlying epidermis (pupal/adult apolysis), and the eye cup becomes yellow at its periphery. Duration at 25 degrees C: approximately 32 hours. (132.2-164.3 hours after egg laying; 12.2-44.3 hours after puparium formation).
phanerocephalic pupa
pupal stage P5
Pupal stage P5 starts when the legs and wings reach full extension along the abdomen and ends as the Malpighian tubules become prominent and green. Duration at 25 degrees C: approximately 6 hours, 30 minutes. (132.2-138.7 hours after egg laying; 12.2-18.7 hours after puparium formation).
pupal stage P5(i)
Legs and wings reach full extension along abdomen. Enlarged initial segments of anterior pair Malpighian tubules move from thorax into abdomen. Translucent patch that lacks adhering fat body cells becomes discernible in the middle of the eye region. Pair of white Malpighian tubules becomes visible dorsally in the abdomen. Duration at 25 degrees C: approximately 66 minutes. (132.2-133.3 hours after egg laying; 12.2-13.3 hours after puparium formation).
Malpighian tubules migrating
pupal stage P5(ii)
white Malpighian tubules
Malpighian tubules become prominent and green. Duration at 25 degrees C: approximately 5 hours, 25 minutes. (133.3-138.7 hours after egg laying; 13.3-18.7 hours after puparium formation).
pupal stage P6
Dark green 'yellow body' appears between the anterior ends of the two Malpighian tubule segments, mid-dorsally at the anterior of the abdomen. Duration at 25 degrees C: approximately 13 hours, 45 minutes. (138.7-152.4 hours after egg laying; 18.7-32.4 hours after puparium formation).
green Malpighian tubules
pupal stage P7
The 'yellow body' moves back between the Malpighian tubules. The transparent pupal cuticle separates from the underlying epidermis. Eye cup becomes yellow at its perimeter. Duration at 25 degrees C: approximately 12 hours. (152.4-164.3 hours after egg laying; 32.4-44.3 hours after puparium formation).
yellow body
pharate adult stage P8
pupal stage P8
yellow-eyed
Pale yellow pigmentation spreads inwards across the eye. Eye color becomes bright yellow, then changes to amber. Duration at 25 degrees C: approximately 12 hours 20 minutes. (164.3-176.6 hours after egg laying; 44.3-56.6 hours after puparium formation).
pharate adult stage P9
Eye color darkens to deep amber, then becomes pale pink. Duration at 25 degrees C: approximately 18 hours. (176.6-194.5 hours after egg laying; 56.6-74.5 hours after puparium formation).
pupal stage P9
amber-eyed
pharate adult stage P10
Eyes become bright red. Orbital and ocellar bristles and vibrissae darken. Duration at 25 degrees C: approximately 6 minutes. (194.5-194.6 hours after egg laying; 74.5-74.6 hours after puparium formation).
pupal stage P10
red-eye bald
pharate adult stage P11
Thoracic bristles become visible, and the tips of the wings turn grey. Duration at 25 degrees C: approximately 2 hours. (194.6-196.6 hours after egg laying; 74.6-76.6 hours after puparium formation).
pupal stage P11
pharate adult stage P11(i)
pupal stage P11(i)
head bristles
Dorsal thoracic microchaetes and macrochaetes become visible. Duration at 25 degrees C: approximately 80 minutes (194.6-195.5 hours after egg laying; 74.6-75.9 hours after puparium formation).
pharate adult stage P11(ii)
pupal stage P11(ii)
Tips of folded wings become grey. Duration at 25 degrees C: approximately 45 minutes (195.5-196.6 hours after egg laying; 75.9-76.6 hours after puparium formation).
thoracic bristles
pharate adult stage P12
Pharate adult stage P12 begins as the abdominal tergite bristles become visible, and ends as the wings darken to black. Duration at 25 degrees C: approximately 2 hours. (196.6-198.6 hours after egg laying; 76.6-78.6 hours after puparium formation).
pupal stage P12
pharate adult stage P12(i)
Bristles of the abdominal tergites become visible, and the wings become grey. Duration at 25 degrees C: approximately 55 minutes. (196.6-197.5 hours after egg laying; 76.6-77.5 hours after puparium formation).
pupal stage P12(i)
wing tips grey
pharate adult stage P12(ii)
wings grey
pupal stage P12(ii)
Sex combs darken in males. Wings darken to black. Duration at 25 degrees C: approximately 65 minutes. (197.5-198.6 hours after egg laying; 77.5-78.6 hours after puparium formation).
pharate adult stage P13
Tarsal bristles darken and claws become black. Duration at 25 degrees C: approximately 3 hours, 20 minutes. (198.6-201.9 hours after egg laying; 78.6-81.9 hours after puparium formation).
pupal stage P13
wings black
pharate adult stage P14
pupal stage P14
The meconium appears dorsally at the posterior tip of the abdomen. Duration at 25 degrees C: approximately 9 hours, 30 minutes (201.9-211.5 hours after egg laying; 81.9-91.5 hours after puparium formation).
mature bristles
pharate adult stage P15
pupal stage P15
Pharate adult stage P15 begins with the tanning of the tergites and ends with eclosion. Duration at 25 degrees C: approximately 8 hours, 30 minutes. (211.5-220 hours after egg laying; 91.5-100 hours after puparium formation).
pharate adult stage P15(i)
Tanning of the tergites obscures the Malpighian tubules and the 'yellow body'. Legs begin to twitch; fly is able to walk if puparium is removed prematurely. Ptilinum expands by hydrostatic pressure, opening the operculum. Duration at 25 degrees C: approximately 8 hours, 6 minutes. (211.5-219.6 hours after egg laying; 91.5-99.6 hours after puparium formation).
meconium
pupal stage P15(i)
pharate adult stage P15(ii)
Stage which starts when the operculum opens and ends when eclosion is completed. Duration at 25 degrees C: approximately 24 minutes. (219.6-220 hours after egg laying; 99.6-100 hours after puparium formation).
eclosion
pupal stage P15(ii)
adult stage
adult stage A1
adult stage I
Newly eclosed adult stage. During this stage, the wings unfold flatten and harden and the abdomen becomes broader.
adult stage A2
Wings extended. Abdominal tergites tan to shiny brown.
adult stage II
gamete
This should be considered as a type of cell rather than as a stage. Please use FBbt:00005412.
pharate adult stage
The developing adult after pupal-adult apolysis , i.e.- from stage P8 (when yellow eye color first becomes visible through the pupal case), to eclosion. Duration at 25 degrees C: approximately 55.7 hours (164.3-220 hours after egg laying; 44.3-100 hours after puparium formation).
adult stage A3
adult stage III
Tergites tanned.
spermatogenesis
P-stage
Temporal ordering number - 490. DISAMBIGUATION: In Drosophila lab vernacular, the term 'pupal stage' is often used to refer to the entire period from formation of the puparium to eclosion. However, this does not correspond to the standard usage of 'pupal stage' for Cyclorrhaphous flies (for discussion see: FBrf0087128). Briefly: formation of the puparium (hardening of the larval cuticle) marks the beginning of the pre-pupal stage. The pupal stage begins following pupal/larval apolysis - detachment of the larval epidermis from the puparium. In Drosophila, the outward sign of the completion of apolysis is the eversion of the head an expulsion of the larval mouthparts (FBrf0036849). We use P-stage to refer to the stage from pupariation to eclosion, and restrict pupal stage to its standard usage.
Stage of the Drosophila life-cycle from the formation of the puparium (beginning of the prepupal stage) to eclosion.
metamorphosis
oogenesis stage S11a
oogenesis stage S11b
third instar larval stage L1
late third-instar
Stage which begins when wandering third instar larva stops crawling. The larva everts its anterior spiracles during this stage.
third instar larval stage L2
The anterior spiracles are fully everted, with 7-9 finger-like projections. The body shortens, withdrawing three apparent abdominal segments and the larva sticks to its substrate.
spiracles everted larva
oogenesis stage S13E
Oogenesis stage during which the number of nurse cell nuclei at the anterior of the oocyte reduce from 4 to zero. The oocyte chromosomes reach full metaphase I during this stage, at which point meiosis is arrested (until fertilization).
late third instar larval stage
Third instar larva from the beginning of wandering to the beginning of puparium formation.
occurrent
developmental process
embryonic cycle
life cycle stage
early extended germ band stage
A collective term for stages 9 and 10.
Drosophila life cycle