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Actinia


Actinia
Photo Information
Copyright: Filiz iNCi (ammodytes) Gold Star Critiquer/Gold Note Writer [C: 124 W: 0 N: 121] (390)
Genre: Animals
Medium: Color
Date Taken: 2008-08-01
Categories: Ocean
Exposure: f/2.8, 1/50 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2008-09-17 3:18
Viewed: 1203
Points: 18
[Note Guidelines] Photographer's Note
Regum: Animalia
Subregnum: eumetazoa
Divisio: Radiata
Phylum: Cnidaria (=Coelenterata)
Classis: Anthozoa
Subclassis: Hexacorallia (=Zoantharia)
Ordo: Actinaria
Familya: Actiniidae
Genus: Actinia

Regum: Animalia
Subregnum: eumetazoa
Divisio: Eucoelomata
Phylum: Mollusca
Classis: Lamellibranchia (=Bivalvia, Pelecypoda)
Subclassis: Pteriomorpha
Ordo: Mytiloida
Familya: Mytilidae
Genus: Mytilus

Phylum: Chlorophyta
Classis: Ulvaphyceae
Ordo: Ulvales
Familya: Ulvaceae
Genus: Ulva

Actinia equina

The Beadlet anemone (Actinia equina) is a common sea anemone found on rocky shores around all coasts of the UK. Its range extends to the rest of Western Europe and the Mediterranean, and probably as far as the coast of West Africa.
Actinia equina can be found both in exposed and sheltered situations. It is highly adapted to the intertidal zone as it can tolerate both high temperatures and desiccation. The anemone may also be found in regions of variable salinity such as estuaries.
Underwater, it displays up to 192 tentacles, arranged in six circles. Out of water, the tentacles retract and the anemone resembles a blob of red, brown, green or orange jelly, up to about 5cm across. There is some evidence that the various colour forms may in fact be different species.
Actinia equina is similar in form to the Strawberry anemone (Actinia fragacea) but is a uniform colour and is typically rather smaller.


Mytilus galloprovincialis (Lamarck, 1819)

Distribution

Mytilus galloprovincialis is dark blue or brown to almost black. The two shells are equal and nearly quadrangular. The outside is black-violet coloured; on one side the rim of the shell ends with a pointed and slightly bent umbo while the other side is rounded, although shell shape varies by region. It also tends to grow larger than its cousins, up to 15cm, although typically only 5-8cm.

Habitat description

In its native range, M. galloprovincialis can be found from exposed rocky outer coasts to sandy bottoms (Ceccherelli and Rossi 1984). As an invader it typically requires rocky coastlines with a high rate of water flow. In fact, unlike the other 26 Asian and Atlantic molluscs introduced into Pacific regions only one introduced species, the Mediterranean mussel M. galloprovincialis, occurs in open coast, high energy environments on the Pacific coast; all remaining species are restricted to bays and estuaries (Carlton 1992).

Lifecycle stages

Adult mussels spawn gametes, after which fertilization of an egg occurs. The egg undergoes gametogenesis, forming a larvae. The larva forms into a juvenile which settles and attaches itself using byssal threads after 2 to 4 weeks (Matson 2000).

Ulva lactuca

Ulva lactuca Linnaeus, a green alga in the Division Chlorophyta, is the type species of the genus Ulva, also known by the common name sea lettuce.

Description

Ulva lactuca is a thin flat green alga growing from a discoid holdfast. The margin is somewhat ruffled and often torn. It may reach 18 cm or more in length, though generally much less, and up to 30 cm across. The membrane is two cells thick, soft and translucent. and grows attached, without a stipe, to rock by a small disc-shaped holdfast. Green to dark green in color this species in the Chlorophyta is formed of two layers of cells irregularly arranged, as seen in cross section. The chloroplast is cup-shaped with 1 to 3 pyrenoids. There are other species of Ulva which are similar and not always easy to differentiate.
boreocypriensis, montivipera, bahadir, xTauruSx, matatur, spalaxtr, gpeler has marked this note useful
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Discussions
ThreadThread Starter Messages Updated
To xTauruSx: Selamammodytes 1 09-17 06:31
To bahadir: denıızz:(ammodytes 1 09-17 06:30
To montivipera: :)ammodytes 1 09-17 05:48
To boreocypriensis: Merhaba Hocamammodytes 1 09-17 04:37
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Critiques [Translate]

Selam Filiz, güzel bir omurgasız grubu çekmişsin. Renkler de çok canlı. Ellerine sağlık.
Bayram

Not. Her zman bekleriz.

Merhaba Filiz hanım,
Değişik ve sıradışı bir makro çalışma.Elinize sağlık.
Selamlarımla..

hAyAti

Merhaba Filiz,
Güzel bir kare olmuş, eline sağlık. Çerçeve de tanıdık geldi :)
Selamlar...

Selam Filiz, eline sağlık. Yazı denizde geçirdin galiba.)
Bahadır

Selam Filiz, sanırım gebze de sahilden:P aline sağlık. Güzel olmuş.
Deniz

Merhaba Filiz,
Renkler biraz abartılı (saturated) ama kompozisyonun hoşluğunu ve öğretici değerini etkilemiyor, net, güzel bir makro çalışması olmuş, kutlarım. Notlarında Mytilus'un yenebilirliğine, Ulva'nın kirlilik endikatörü olarak kullanılabildiğine değinebilir, resmin çekilme yöresini de belirtebilirdin diye düşünüyorum...
Mehmet

Merhaba Filiz,
Çok renkli bir çalışma olmuş çok güzel eline sağlık,
Desenlerde çok keskin.
Mehmet.

Filiz merhaba,
Nefis bir şakayık. Bu kadar canlı bir rengini denizlerimizde hiç görmedim. Balki de yeterince dikkatli bakmadım. Eline sağlık. Paylaşımın için teşekkürler. Selamlar
Mustafa

Merhaba Filiz,
Çok güzel ve parlak renkler. Bunların ne olduğunu anlayana kadar çok uzun zaman istemiştim ama sonunda birgün açık bitane görünce dokunduğum zaman diğer kiraza benzeyenlerin ne olduğunu anlamıştım :). Ellerine sağlık. Paylaşım ve not için teşekkürler
Sevgiler,
Gamze:)

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