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Barnacle

Barnacle

1. (Science: zoology) Any cirriped marine crustacean free swimming in the larval state, but permanently fixed as adults, adhering to rocks, floating timber, ships, etc.

there are some 800 described species, grouped in several genera, including lepas, balanus, scalpellum, and the stalked or goose barnacles (genus lepas and allies).

2. (Science: zoology) barnacle eater, a bark louse (Ceroplastes cirripediformis) of the orange and quince trees in Florida. The female scale curiously resembles a sessile barnacle in form.

3. (Science: veterinary) An instrument for pinching a horses nose, and thus restraining him.

4. Spectacles; so called from their resemblance to the barnacles used by farriers.

Origin: Prob. From E. Barnacle a kind of goose, which was popularly supposed to grow from this shellfish.


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abiotic factors

... this could restrict or expand the intertidal zone. seasonal climate change (as opposed to global climate change) will have no more effect on barnacle populations than it will on anything else. This is like asking if the earth rotating around the sun will impact barnacle populations.

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by AstusAleator
Sun Jul 12, 2009 5:48 am
 
Forum: Ecology
Topic: abiotic factors
Replies: 3
Views: 11756

Re: barnacle ditribution

This is an old question, so I guess I can take a whack at it. 1: D. Interspecific interaction By removing species A, and keeping species B, and vice versa, you are looking at what effect that the absence of one species will have on another. The normal two species population is the control. 2: D. exp...

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by Zach
Tue Jul 07, 2009 2:55 pm
 
Forum: Ecology
Topic: barnacle ditribution
Replies: 4
Views: 9709

barnacle ditribution

Can anybody help me with this questions? Thank you :roll: 1.Let’s say that you set up 3 preliminary treatments in your barnacle distribution study. The first involves removing B. balanoides from the community, the second involves removing C. stellatus from the community, and for the ...

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by missy42
Fri May 01, 2009 6:35 pm
 
Forum: Ecology
Topic: barnacle ditribution
Replies: 4
Views: 9709

abiotic factors

Can any body help me with this question? pls ....thank you Which abiotic factor(s) is/are not limiting the size of barnacle populations in the intertidal zone ? Choose all that are correct. a. tide conditions b. seasonal climate change c. competition d. space e. rate of growth

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by missy42
Fri May 01, 2009 6:34 pm
 
Forum: Ecology
Topic: abiotic factors
Replies: 3
Views: 11756

Brain size=IQ level theory (Blacks vs Whites & Asians)

... and T. M. Jessell (Eds.), Principles of neural selection (3rd ed.) New York: Elsevier. Larsson, K. (1993). Inheritance of body size in the Barnacle Goose under different environmental conditions. Journal of Evolutionary Biology, 6, 195-208. Lynn, R. (1991). Race differences in intelligence: ...

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by TJJ
Fri May 16, 2008 12:14 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 72
Views: 257617


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