FB2024_04 , released June 25, 2024
FB2024_04 , released June 25, 2024
CV Term Report
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General Information
Term second instar larval stage ID (Ontology) FBdv:00005338 (Fly Development)
Definition 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).[ FlyBase:FBrf0007733 ]
Also Known As "L2" ; "second instar larva"
Comment
Links to Extrernal Ontologies
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION     122
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles  Genes Insertions Constructs
 second instar larval stage (all annotations which use CV term, excluding "NOT" statements)       --      17    318    122    152
     abdominal dorsal multidendritic neuron ddaC | second instar larval stage       2       --       --       --       1
     abnormal body size | second instar larval stage       4       --       --       --       2
     abnormal cell migration | second instar larval stage | somatic clone       1       --       --       --       --
     abnormal cell shape | second instar larval stage       4       --       --       --       4
     abnormal developmental rate | recessive | second instar larval stage       2       --       --       --       --
     abnormal developmental rate | second instar larval stage      25       --       --       --      11
     abnormal feeding behavior | recessive | second instar larval stage       2       --       --       --       --
     abnormal feeding behavior | second instar larval stage      15       --       --       --      10
     abnormal locomotor behavior | second instar larval stage       7       --       --       --       6
     abnormal meiotic cell cycle | second instar larval stage       1       --       --       --       --
     abnormal mitotic cell cycle | male | second instar larval stage       1       --       --       --       --
     abnormal mitotic cell cycle | second instar larval stage       2       --       --       --       1
     abnormal neuroanatomy | second instar larval stage      20       --       --       --       9
     abnormal neurophysiology | second instar larval stage       1       --       --       --       --
     abnormal size | male | second instar larval stage       1       --       --       --       --
     abnormal size | recessive | second instar larval stage       1       --       --       --       --
     abnormal size | second instar larval stage       7       --       --       --       3
     adult subretinal glial cell | second instar larval stage | somatic clone       1       --       --       1       --
     autophagosome | second instar larval stage | somatic clone       1       --       --       --       --
     campaniform sensillum | ectopic | second instar larval stage       1       --       --       --       --
     chemical resistant | second instar larval stage       2       --       --       --       --
     decreased body size | recessive | second instar larval stage       3       --       --       --       --
     decreased body size | second instar larval stage       8       --       --       --       4
     decreased body size | second instar larval stage | heat sensitive       1       --       --       --       1
     decreased cell growth rate | second instar larval stage | conditional       7       --       --       --       4
     decreased cell growth rate | second instar larval stage | somatic clone       2       --       --       --       --
     decreased cell number | second instar larval stage       6       --       --       --       2
     decreased occurrence of cell division | second instar larval stage       7       --       --       --       4
     decreased rate of feeding behavior | codominant | second instar larval stage       1       --       --       --       --
     decreased rate of movement | second instar larval stage       5       --       --       --       --
     decreased size | second instar larval stage       1       --       --       --       --
     dendrite | second instar larval stage       2       --       --       --       1
     dendritic arborizing neuron | second instar larval stage       3       --       --       --       --
     embryonic/larval brain | second instar larval stage       1       --       --       --       --
     embryonic/larval cell body glial cell | second instar larval stage       2       --       --       --       2
     embryonic/larval central nervous system | second instar larval stage       3       --       --       --       2
     embryonic/larval fat body | second instar larval stage       4       --       --       2      1
     embryonic/larval fat body | second instar larval stage | somatic clone       1       --       --       --       --
     embryonic/larval hemocyte | second instar larval stage       4       --       --       1      1
     embryonic/larval lymph gland | second instar larval stage       6       --       --       1      2
     embryonic/larval midgut | second instar larval stage       2       --       --       2       --
     embryonic/larval muscle system | second instar larval stage       2       --       --       1       --
     embryonic/larval nervous system | second instar larval stage       2       --       --       --       1
     embryonic/larval neuromuscular junction | second instar larval stage       3       --       --       1       --
     embryonic/larval oenocyte | second instar larval stage       6       --       --       1      6
     embryonic/larval optic lobe | second instar larval stage       2       --       --       --       2
     embryonic/larval optic stalk | second instar larval stage       3       --       --       --       2
     embryonic/larval pericardial cell | second instar larval stage       2       --       --       --       2
     embryonic/larval salivary gland | second instar larval stage       2       --       --       --       --
     embryonic/larval somatic muscle cell | second instar larval stage       4       --       --       --       3
     embryonic/larval tracheal dorsal trunk | second instar larval stage       6       --       --       3      2
     embryonic/larval tracheal lateral trunk | second instar larval stage       1       --       --       --       --
     embryonic/larval tracheal section | second instar larval stage       7       --       --       1      7
     embryonic/larval tracheocyte | second instar larval stage       4       --       --       1      4
     eye disc | second instar larval stage       4       --       --       --       3
     fat body | second instar larval stage       1       --       --       1       --
     follicle cell | second instar larval stage       2       --       --       --       --
     glial cell | second instar larval stage       4       --       --       --       3
     hub cell | second instar larval stage       1       --       --       --       --
     increased body size | second instar larval stage       3       --       --       --       1
     increased cell death | second instar larval stage       7       --       --       --       5
     increased cell death | second instar larval stage | somatic clone       1       --       --       --       --
     increased cell growth rate | maternal effect | second instar larval stage | conditional       1       --       --       --       --
     increased cell growth rate | second instar larval stage | conditional       8       --       --       --       5
     increased cell size | second instar larval stage       2       --       --       --       1
     increased occurrence of cell division | second instar larval stage      10       --       --       --       8
     lamellocyte | second instar larval stage | increased number       2       --       --       --       --
     larva | second instar larval stage       4       --       --       --       3
     larval CCAP neuron | second instar larval stage       2       --       --       --       2
     larval central brain | progressive | second instar larval stage | somatic clone       1       --       --       --       --
     larval central brain | second instar larval stage       2       --       --       --       --
     larval multidendritic class IV neuron | second instar larval stage       2       --       --       --       2
     larval neuroblast | second instar larval stage       2       --       --       --       --
     larval ventral nerve cord | second instar larval stage       4       --       --       --       --
     lethal | recessive | second instar larval stage       9       --       --       --       --
     lethal | second instar larval stage      21       --       --       6      8
     lipid droplet | second instar larval stage       3       --       --       --       1
     lysosome | second instar larval stage       1       --       --       --       --
     lysosome | second instar larval stage | somatic clone       2       --       --       --       --
     male germline stem cell | second instar larval stage       2       --       --       1       --
     mouth hook | second instar larval stage | increased number       2       --       --       --       --
     muscle attachment site | second instar larval stage       2       --       --       1       --
     muscle cell of ventral longitudinal muscle 3 | second instar larval stage       1       --       --       --       --
     muscle cell of ventral longitudinal muscle 4 | second instar larval stage       1       --       --       --       --
     myotube | second instar larval stage       3       --       --       --       3
     neoplasia | second instar larval stage       1       --       --       --       --
     neuropil | second instar larval stage       2       --       --       --       2
     NMJ bouton | second instar larval stage       5       --       --       1       --
     nucleolus | second instar larval stage       2       --       --       --       --
     organism | second instar larval stage       2       --       --       --       --
     paralytic | second instar larval stage       3       --       --       --       --
     partially lethal - majority die | second instar larval stage       9       --       --       3      2
     posterior signaling center of lymph gland primary lobe | second instar larval stage       2       --       --       --       1
     ribosome | second instar larval stage       1       --       --       --       --
     sarcomere | decreased number | second instar larval stage       2       --       --       --       2
     sarcomere | second instar larval stage       6       --       --       --       3
     testis | second instar larval stage       1       --       --       1       --
     tracheal metamere 10 | second instar larval stage       1       --       --       1       --
     tracheal metamere 8 | second instar larval stage       1       --       --       --       --
     tracheal metamere 9 | second instar larval stage       2       --       --       1       --
     trichoid sensillum | second instar larval stage       1       --       --       --       --
     type I neuroblast | second instar larval stage       3       --       --       --       2
     type Ib terminal bouton | second instar larval stage       1       --       --       --       --
     uncoordinated | second instar larval stage       3       --       --       --       --
     vesicle | second instar larval stage       1       --       --       --       --
     visible | maternal effect | recessive | second instar larval stage       1       --       --       --       --
     visible | recessive | second instar larval stage       3       --       --       --       --
     wing disc | second instar larval stage       1       --       --       --       --
     wing disc | second instar larval stage | somatic clone       2       --       --       --       --
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 |__life stage_______
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 |__life stage_______|
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 |__larval stage_____|
                     second instar larval stage  609 rec.
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    "second instar larva" EXACT
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UBERON:8000001