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Revision as of 00:46, 29 April 2011
Introduction
The bat (chiroptera) family consists of about 1,000 species throughout the world today (90 in Australia) and is not a common model of mammalian embryonic development.
The taxon chiroptera can also be further divided into the Megachiroptera (flying foxes) and Microchiroptera suborders. Echolocation sounds have been shown to differ in Microchiroptera (vocal cords) and Megachiroptera (tongue clicks).
Links: original Bat page
Some Recent Findings
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Taxon
Chiroptera
Genbank common name: bats
Taxonomy Id: 9397 Rank: order
Genetic code: Translation table 1 (Standard)
Mitochondrial genetic code: Translation table 2 (Vertebrate Mitochondrial)
Lineage( abbreviated ): Eukaryota; Fungi/Metazoa group; Metazoa; Eumetazoa; Bilateria; Coelomata; Deuterostomia; Chordata; Craniata; Vertebrata; Gnathostomata; Teleostomi; Euteleostomi; Sarcopterygii; Tetrapoda; Amniota; Mammalia; Theria; Eutheria; Laurasiatheria
Species Comparison
Carollia perspicillata
- (short-tailed fruit bat) Ovulation has a 24 hour variation with up to 2 days of variation in oviduct transit time, and gestation period is 113 - 120 days.
Myotis thysanodes and M. lucifugus
- Ovulation, fertilization, and implantation occur during the first 2 weeks of May and gestation is 50 - 60 days for both species.
Embryonic Stages
Stage |
Key features |
Somites |
Age |
Uterus diameter |
Crown-rump length |
Mass |
12 |
Forelimb buds form; tail bud forms; caudal neuropore closes; 3 pharyngeal arches. |
21-29 |
40 |
5.75 |
3.4 |
4.3 |
14 |
Retinal pigment; nasal pits; end of somitogenesis; propatagium and plagiopatagium primordia; hindlimb AER. |
36-40 |
44 |
6.95 |
5.35 |
24.6 |
15 |
Hand plate and footplate form; lens vesicle; auditory hillocks; premaxillary centers. |
46 |
8.65 |
7.45 |
56 | |
16 |
Nose-leaf primordium; pinna and tragus form; forelimb digital condensations, uropatagium primordium. |
50 |
12.06 |
8.66 |
110 | |
17 |
Tongue protruding; cervical flexure straightens; hindlimb interdigit tissue receding; eyes begin to close. |
54 |
13.45 |
9.15 |
114 | |
18 |
Free thumb; head and body smoother, rounder; eyes half-closed; postaxial flexure at wrist; calcar. |
60 |
16.32 |
12.35 |
278 | |
20 |
Distal forelimbs overlap over face; head larger; eyelids cover pigmented retina; claw primordia form. |
70 |
20.0 |
16.35 |
617 | |
22 |
Prominent, triangular nose-leaf; eyelids reopening; wing membranes corrugated; claws pigmented, hooked. |
80 |
23.03 |
20.02 |
1527 | |
24 |
Fetal period commences; eyes completely open; face and nose-leaf pigmenting. |
90 |
23.53 |
21.13 |
2097 |
(Values are mean n= 2-6, +/- standard deviation, original table contains more detailed data)
Thanks to Prof Richard Behringer and Dr Chris J. Creteko Dept. of Molecular Genetics, University of Texas M. D. Anderson Cancer Center, who provided images and stage information on the embryonic development of the Carollia perspicillata bat.
Limb Development
Bat - adult and fetal limbs[3]
A - Left limbs of adult Myotis ricketti. DI, DII, DIII, DIV and DV represent digits I-V of the forelimb
B, C - Left limbs of Miniopterus schreibersii fuliginosus in the Fetal Stage as an example of samples used for the Myotis ricketti libraries. Libraries Hand DI and Hand DII-V are constructed from forelimb digit I and digits II-V, respectively. Library Foot is constructed from hindlimb digits I-V.
Bar = 1 cm in A; bar = 1 mm in B and C.
Neural Development
The short-tailed fruit bat Carollia perspicillata Stage 14 embryo nervous system as identified by neurofilament antibody (brown) staining.
References
Search Pubmed: bat development | chiroptera development
Animal Development: axolotl | bat | cat | chicken | cow | dog | dolphin | echidna | fly | frog | goat | grasshopper | guinea pig | hamster | horse | kangaroo | koala | lizard | medaka | mouse | opossum | pig | platypus | rabbit | rat | salamander | sea squirt | sea urchin | sheep | worm | zebrafish | life cycles | development timetable | development models | K12 |
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, June 10) Embryology Bat Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Bat_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G