Wednesday, February 16, 2011

Barnacle Sorting (Updated)

Hello,

 I did more barnacle sorting since my  first trial of it and the process was much easier. On top of that, I did more research on the different types of barnacles that I have sorted out and voila, I  managed to  identify them vaguely by visual comparisson of my pictures from my sorted barnacles  and form various internet sources. So, here I present the  latest findings of a few  types of my barnacles in no particular order! Kindly refer to my previous post for more info!

Note: This is only preliminary identification as I need to identify positive them by taxonomic keys with regards to their structural features besides the striations and colours!

Type1: Used to be classified as all 'white'.Now: Balanus eburneus

Balanus eburneus Gould, 1841
Balanus eburneusIvory barnacle
Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Cirripedia
Order Thoracica
Family Balanidae



DescriptionA small, white, conical barnacle, without the longitudinal stripes of Balanus amphitrite and B. reticulatus previously discussed. Large adults approach 2 cm in diameter. Surface of the test plates generally smooth or with shallow horizontal grooves. The tergum has a short broad spur with a rounded tip, quite distinct from both B. amphitrite and B. reticulatus.

Extracted from: http://www2.bishopmuseum.org/HBS/invertguide/species/balanus_eburneus.htm)

Type 2:My classification of the 'sea-star' barancle.Now: Chthamalus proteus



Chthamalus proteus Dando & Southward, 1980
Chthamalus proteusCaribbean barnacle
Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Cirripedia
Order Thoracica
Family Chthamalidae



DescriptionChthamalus proteus is a small light brown or gray-white barnacle (to about 1 cm diameter). Its conical shell is variable in external appearance depending on age, crowding, and degree of weathering. Shell plates may be smooth or ribbed. The photo above is of relatively uncrowded older individuals. Older weatherd individuals of C. proteus superficially resemble Nesochthamalus intertextus, a native intertidal species (pictured below). The interleaving teeth between the shell plates differentiates N. intertextus (see illustration below), and it tends to be dull purple

Extracted from: http://www2.bishopmuseum.org/HBS/invertguide/species/chthamalus_proteus.htm

Type 3: Okay, actually found this typed and I classified under the 'Onion' category.So, I didn't take a picture of it (I will do so A.S.A.P.)  Boy, was I wrong after I stumbled upon the similiar links to idenitify type 1 and 2! This would be Balanus amphitrite

Balanus amphitrite (Darwin, 1854)
Balanus amphitrite from Pearl HarborStriped barnacle
Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Cirripedia
Order Thoracica
Family Balanidae

 
 
DescriptionBalanus amphitrite is a small, conical, sessile barnacle (to about 1.5 cm diameter). Color is whitish with purple or brown longitudinal stripes. Surface of test plates are longitudinally ribbed. The interlocking tergum and scutum, the paired structures which cover the animal inside are as pictured below.
scutum and tergum of Balanus amphitriteA similar species, Balanus reticulatus Utinomi, is also an introduced species and commonly occurs with B. amphitrite. It also has longitudinal purple or brown stripes, but these stripes are intersected by horizontal grooves, giving the surface of the test plates a rough reticulated striation, unlike B. amphitrite. It can also be distinguished by examination of the tergum and scutum pictured below. Note the more sharply pointed apex of the tergum and the elongated and narrower tergum spur of B. reticulatus.
Extracted from: http://www2.bishopmuseum.org/HBS/invertguide/species/balanus_amphitrite.htm


These are my other sorted barnacles  which have yet to be identified  by their scientific names....

'Onion'

'Tiger'



'Marble' i.e. Left hand side barnacle!



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