Click Logo to go to the MaltaWildPlants.com Index MaltaWildplants.com
Comprehensive database of the Wild plants of Malta
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Family Trochidae

 
Post new topic   Reply to topic    MaltaWildplants.com Forum Index -> Mollusca
View previous topic :: View next topic  
Author Message
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Tue Oct 25, 2011 1:43 pm    Post subject: Family Trochidae

Family Trochidae
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Tue Oct 25, 2011 1:46 pm    Post subject: Family Trochidae

This is a large family of some quite familiar species of shells around our islands.
Some photographs below.
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Tue Oct 25, 2011 1:47 pm    Post subject: Jujubinus striatus

A common species found around our coasts in shallow waters, commonly found beached after bad weather. Size usually less than 10mm in size.
Below were found beached at Birzebbugia in March 2010.



Jujubinus striatus.JPG
 Description:
Jujubinus striatus
 Filesize:  13.08 KB
 Viewed:  34802 Time(s)

Jujubinus striatus.JPG




Last edited by IL-PINE on Tue Oct 25, 2011 10:06 pm; edited 1 time in total
Back to top
MWP admin
Site Admin


Joined: 05 Sep 2005
Posts: 3136
Location: Malta

PostPosted: Tue Oct 25, 2011 8:46 pm    Post subject:

Thanks, cute shape and patterns. As I understand, these are marine snails hux?

Thanks for posting

_________________
Stephen Mifsud
Administrator

{Comments} {Donation} {Recommendations}
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Tue Oct 25, 2011 10:05 pm    Post subject:

yes they are. slowly slowly will post more and more species of the family.
cheers
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Wed Oct 26, 2011 2:21 pm    Post subject: Jujubinus striatus

Some better photographs of Jujubinus striatus (Linnaeus, 1758), of a specimen found beached at Gnejna bay in February 2002. Size of around 5mm, these are the best photographs I could take![/i]


335.JPG
 Description:
Jujubinus striatus dorsal view
 Filesize:  61.03 KB
 Viewed:  34781 Time(s)

335.JPG



337.JPG
 Description:
Jujubinus striatus ventral view
 Filesize:  40.34 KB
 Viewed:  34781 Time(s)

337.JPG


Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Thu Oct 27, 2011 10:10 am    Post subject: Jujubinus exasperatus

Another common species around the Maltese Islands found in shallow waters among Posidonia and often found beached in large numbers on shores after storms. This is Jujubinus exasperatus (Pennant, 1777). Specimen below were found beached at Gnejna in February 2002. Size 11mm

Sometimes it is difficult to differentiate this species from Jujubinus striatus. In Exasperatus the basal cord is more marked, and there are usually 4 spiral cords in each segment (in Striatus there are usually a larger number: 6-10). Besides the species grows to larger sizes.



342.JPG
 Description:
dorsal view
 Filesize:  57.44 KB
 Viewed:  34772 Time(s)

342.JPG



343.JPG
 Description:
ventral view
 Filesize:  49.64 KB
 Viewed:  34772 Time(s)

343.JPG



340.JPG
 Description:
Differentiation markers
 Filesize:  74.54 KB
 Viewed:  34772 Time(s)

340.JPG


Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Sun Nov 13, 2011 9:54 am    Post subject:

There are other Jujubinus species around the Maltese Islands, but I still have not encountered with any of them.
Back to top
MWP admin
Site Admin


Joined: 05 Sep 2005
Posts: 3136
Location: Malta

PostPosted: Sun Nov 13, 2011 11:28 am    Post subject:

Thanks for the info. For me thay are pretty all the same ! (like Ophrys spp. are for many !)

Keep it up for including mollusca species on the maltafauna.com website.

btw. If they do not have Maltese name, leave the field blank (instead the species name) so automaticaly, it becomes 'no Maltese name' , unless it is common practice to use the species name as Maltese name in the Mollusca world.

_________________
Stephen Mifsud
Administrator

{Comments} {Donation} {Recommendations}
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Sun Nov 13, 2011 4:01 pm    Post subject:

ok gbin
usually we do not use neither english nor maltese names - just scientific. cheers
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Fri Dec 09, 2011 3:23 pm    Post subject: Clanculus jussieui (Payraudeau, 1826)

another common species from shallow bays - Clanculus jussieui. It is a small species reaching a maximum of 13mm in size. The genus Clanculus is distinguished by the fact that they have a toothed columella.
Clanculus jussieui is distinguished from other members of the genus as it has a smooth shell which lacks any ornamentation.
Specimens below were found beached at Gnejna Bay in February 2002.



cj4.jpg
 Description:
shell
 Filesize:  56.8 KB
 Viewed:  34418 Time(s)

cj4.jpg



cj2.jpg
 Description:
smooth lucid shell
 Filesize:  65.55 KB
 Viewed:  34418 Time(s)

cj2.jpg



cj1.jpg
 Description:
underside of shell
 Filesize:  62.18 KB
 Viewed:  34418 Time(s)

cj1.jpg



cj3.jpg
 Description:
toothed columella
 Filesize:  97.32 KB
 Viewed:  34418 Time(s)

cj3.jpg


Back to top
MWP admin
Site Admin


Joined: 05 Sep 2005
Posts: 3136
Location: Malta

PostPosted: Fri Dec 09, 2011 6:56 pm    Post subject:

Hi Pine, I shall work on the mollusca input right after this post.

Just to let you know that you can also add your name in the photos - but as you wish.


Photo: Owen Mifsud
www.MaltaFauna.com


PS: did you see this:
http://maltawildplants.com/forum/viewtopic.php?t=1810

_________________
Stephen Mifsud
Administrator

{Comments} {Donation} {Recommendations}
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Tue Dec 13, 2011 9:33 pm    Post subject: Clanculus cruciatus (Linnaeus, 1758)

Another frequent species found in shallow waters under stones and often found beached.


023.JPG
 Description:
 Filesize:  70.63 KB
 Viewed:  34369 Time(s)

023.JPG



024.JPG
 Description:
 Filesize:  140.69 KB
 Viewed:  34369 Time(s)

024.JPG



028.JPG
 Description:
 Filesize:  54.06 KB
 Viewed:  34369 Time(s)

028.JPG



038b.jpg
 Description:
 Filesize:  47.78 KB
 Viewed:  34369 Time(s)

038b.jpg


Back to top
MWP admin
Site Admin


Joined: 05 Sep 2005
Posts: 3136
Location: Malta

PostPosted: Tue Dec 13, 2011 11:37 pm    Post subject:

Ara how nice! Is that dull-bluish marking part of the colour of the shell or an artifact?

PS, I had a mollusc for ID on the forum, did you notice it ?

Tomorrow tinsiex...

_________________
Stephen Mifsud
Administrator

{Comments} {Donation} {Recommendations}
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Wed Dec 14, 2011 11:29 am    Post subject:

the bluish is normal, the artefact is the brownish around (its soil!)
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Wed Dec 14, 2011 11:35 am    Post subject:

sent an sms today. cheers
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Wed Dec 14, 2011 11:36 am    Post subject:

just bought a microscope, should be able to take photographs of tiny shells now.
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Wed Dec 14, 2011 10:21 pm    Post subject: Gibbula varia

Just started the genus Gibbula.
The first species is the very common Gibbula varia. As it's name implies it is very variable in colouration which vaires from dirty white to reddish-brown. It is a flattish species with a deep and wide umbilicus. Sculpture is limited to concentric (circular) cords.



006.JPG
 Description:
 Filesize:  90.44 KB
 Viewed:  34357 Time(s)

006.JPG



001.JPG
 Description:
 Filesize:  61.41 KB
 Viewed:  34357 Time(s)

001.JPG



010a.jpg
 Description:
 Filesize:  84.27 KB
 Viewed:  34357 Time(s)

010a.jpg



007b.jpg
 Description:
 Filesize:  83.94 KB
 Viewed:  34357 Time(s)

007b.jpg



009b.jpg
 Description:
 Filesize:  124.23 KB
 Viewed:  34357 Time(s)

009b.jpg


Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Thu Dec 15, 2011 6:15 pm    Post subject: Gibbula ardens (von Salis, 1793)

Another common and widespread species, the larger Gibbula ardens which can reach up to 15mm in size.
Differs from Gibbula umbilicaris in having a large aperture and a columellar fold. From other Gibbula species in having a deep channelled suture and the columellar fold.



018b.jpg
 Description:
 Filesize:  85.92 KB
 Viewed:  34351 Time(s)

018b.jpg



038a.jpg
 Description:
 Filesize:  105.65 KB
 Viewed:  34351 Time(s)

038a.jpg



038b.jpg
 Description:
 Filesize:  133.85 KB
 Viewed:  34351 Time(s)

038b.jpg



041b.jpg
 Description:
 Filesize:  81.5 KB
 Viewed:  34351 Time(s)

041b.jpg



042c.jpg
 Description:
 Filesize:  134.08 KB
 Viewed:  34351 Time(s)

042c.jpg



042d.jpg
 Description:
 Filesize:  90.31 KB
 Viewed:  34351 Time(s)

042d.jpg


Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Wed Dec 21, 2011 10:42 pm    Post subject: Gibbula umbilicaris (Linnaeus, 1758)

Another common species found beached on many coasts. Differs from Gibbula ardens, by having a narrow aperture and being more flattened in aspect.


051a.jpg
 Description:
 Filesize:  73.41 KB
 Viewed:  34277 Time(s)

051a.jpg



051b.jpg
 Description:
 Filesize:  69.84 KB
 Viewed:  34277 Time(s)

051b.jpg



050a.jpg
 Description:
 Filesize:  52.93 KB
 Viewed:  34277 Time(s)

050a.jpg



048a.jpg
 Description:
narrow aperture
 Filesize:  72.57 KB
 Viewed:  34277 Time(s)

048a.jpg


Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Wed Dec 21, 2011 10:43 pm    Post subject:

quite a complex and common family
Back to top
MWP admin
Site Admin


Joined: 05 Sep 2005
Posts: 3136
Location: Malta

PostPosted: Thu Dec 22, 2011 8:05 am    Post subject:

Getting more interesting.... credit good!
_________________
Stephen Mifsud
Administrator

{Comments} {Donation} {Recommendations}
Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Mon Dec 26, 2011 11:30 pm    Post subject: Gibbula guttadauri (Philippi, 1836)

A rare species around our shores reaching mostly up to 6mm in size. Has characteristic structure with 4 strong concentric cords with fine oblique lamellae between cords. My only specimen of around 3mm was found beached at Pretty Bay.


017c.jpg
 Description:
 Filesize:  46.41 KB
 Viewed:  34210 Time(s)

017c.jpg



002c.jpg
 Description:
 Filesize:  40.17 KB
 Viewed:  34210 Time(s)

002c.jpg



007c.jpg
 Description:
 Filesize:  43.46 KB
 Viewed:  34210 Time(s)

007c.jpg


Back to top
IL-PINE
Premium Member


Joined: 07 Sep 2005
Posts: 1112
Location: Qormi

PostPosted: Fri Feb 03, 2012 11:21 pm    Post subject: Gibbula philberti (Recluz, 1843)

Another rare species which is however quite frequent at Gnejna Bay. My specimens were found beached there. This species has 3-4 rather strong concentric cords on the last whorl that are characteristic. Reaches up to 11mm in size.


032a.jpg
 Description:
Upper view
 Filesize:  59.02 KB
 Viewed:  33725 Time(s)

032a.jpg



032b.jpg
 Description:
Specimen B
 Filesize:  73.21 KB
 Viewed:  33725 Time(s)

032b.jpg



033c.jpg
 Description:
Specimen C
 Filesize:  67.58 KB
 Viewed:  33725 Time(s)

033c.jpg



034b.jpg
 Description:
Umbilicus
 Filesize:  73.68 KB
 Viewed:  33725 Time(s)

034b.jpg


Back to top
MWP admin
Site Admin


Joined: 05 Sep 2005
Posts: 3136
Location: Malta

PostPosted: Fri Feb 03, 2012 11:48 pm    Post subject:

Wiehed isbah mill-iehor - prosit u thanks
_________________
Stephen Mifsud
Administrator

{Comments} {Donation} {Recommendations}
Back to top
Display posts from previous:   
Post new topic   Reply to topic    MaltaWildplants.com Forum Index -> Mollusca All times are GMT + 1 Hour
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group