File:FMIB 48193 -Quahog Eggs- -.jpeg
Original file (864 × 1,388 pixels, file size: 337 KB, MIME type: image/jpeg)
Captions
The categories of this image need checking. You can do so here.
|
Summary[edit]
Author |
English: State of Massachusetts Fish and Game Commission |
|||||||||||||||||||||||
Description |
English: [Quahog Eggs] :
Fig.15.--Ciliated gastrula, ten hours after fecundation. The embryo Can now swim through the water by means of hairlike cilia. The larger cells have become invaginated . Fig.16.--Trochosphere stage, twelve to fourteen hours after fecundation. The body has elongated and the cilia are now confined to the front end. The opening of the primitive mouth (pm) cn be seen on the lower side, while above is a slight indentation corresponding to the eginning of the shell gland (sg) . Fig.17.--Formation of the shell, which arises at two symmetrical points of calcification, right and left of the median line, and gradually envelops the animal . Fig.18.--Early veliger swimmer with velum extended from the shell, about thirty-six hours after fecundation. aa, anterior adductor muscle, pa, posterior adductor muscle, s, stomach, a, anus, mt, mouth, v, velum . Fig.19.--Veliger slightly older than shown in Fig.18. The intesting (i) has elongated, and the liver (l) is more prominent.
|
|||||||||||||||||||||||
Date |
1912 date QS:P571,+1912-00-00T00:00:00Z/9 |
|||||||||||||||||||||||
Collection |
institution QS:P195,Q219563 |
|||||||||||||||||||||||
Current location |
English: Freshwater and Marine Image Bank |
|||||||||||||||||||||||
Accession number | ||||||||||||||||||||||||
Source/Photographer |
English: Massachusetts. Commissioners on Fisheries and Game. (1912) Report Upon the Quahaug and Oyster Fisheries of Massachusetts, Boston, MA: Wright & Potter Printing Co. |
|||||||||||||||||||||||
Permission (Reusing this file) |
|
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 20:56, 17 September 2015 | 864 × 1,388 (337 KB) | BMacZeroBot (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
Structured data
Items portrayed in this file
depicts
- Media needing category review as of 17 September 2015
- Media needing category review with 2 suggested categories
- Images from the Freshwater and Marine Image Bank
- PD-UWASH-FMIB
- Artworks with known accession number
- Artworks without Wikidata item
- Images from the Freshwater and Marine Image Bank to check
- Uncategorized shellfish