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Time of love - Harmonia axyridis


Time of love - Harmonia axyridis
Photo Information
Copyright: Luciano Gollini (lousat) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6482 W: 89 N: 15613] (65313)
Genre: Animals
Medium: Color
Date Taken: 2008-07-23
Categories: Insects
Exposure: f/2.8
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2008-07-29 8:18
Viewed: 3639
Points: 28
[Note Guidelines] Photographer's Note
Harmonia axyridis (Thanks "batu")

Class: Insecta

Order: Coleoptera

Superfamily: Cucujoidea

Family: Coccinellidae

Coccinellidae is a family of beetles, known variously as ladybirds (British English, Australian English, South African English), ladybugs (North American English) or lady beetles (preferred by some scientists). The family name comes from its type genus, Coccinella. Coccinellids are found worldwide, with over 5,000 species described, more than 450 native to North America alone. Coccinellids are small insects, ranging from 1 mm to 10 mm (0.04 to 0.4 inches), and are commonly yellow, orange, or scarlet with small black spots on their wing covers, with black legs, head and antennae. A very large number of species are mostly or entirely black, gray, or brown and may be difficult for non-entomologists to recognize as coccinellids (and, conversely, there are many small beetles that are easily mistaken as such, like tortoise beetles).
Coccinellids are generally considered useful insects as many species feed on aphids or scale insects, which are pests in gardens, agricultural fields, orchards, and similar places. The Mall of America, for instance, releases thousands of ladybugs into its indoor park as a natural means of pest control for its gardens. Some people consider seeing them or having them land on one's body to be a sign of good luck to come, and that killing them presages bad luck. A few species are pests in North America and Europe.Coccinellids are typically predators of Hemiptera such as aphids and scale insects, though members of the subfamily Epilachninae are herbivores, and can be very destructive agricultural pests (e.g., the Mexican bean beetle). They are also known to eat certain plants and crops when no other food is present, making them a possible pest to farmers and gardeners. While they are often used as biological control agents, introduced species of ladybirds (such as Harmonia axyridis or Coccinella septempunctata in North America) can outcompete and displace native coccinellids, and become pests in their own right.
Coccinellids are often brightly colored to ward away potential predators. This defense works because most predators associate bright colors (especially orange and black or yellow and black) with poison and other unpleasant properties. This phenomenon is called aposematism. In fact, most coccinellids are indeed poisonous to smaller predators, such as lizards and small birds; however, a human would have to eat several hundred coccinellids before feeling any effects. Adult coccinellids are able to reflex-bleed hemolymph from their leg joints, releasing their oily yellow toxin with a strong repellent smell. This becomes quite obvious when one handles a coccinellid roughly.
Most coccinellids mate in spring or summer and the female lays a cluster of eggs (numbering from a few to a few hundred, depending on species) as near as possible to an aphid colony. In most species these eggs hatch into a larval state within a week. This state lasts 10–15 days, and they then go into a pupal stage before becoming an adult coccinellid. The entire life cycle of the Coccinellid is only 4–7 weeks. Most ladybird species are univoltine, producing only one generation a year, although some are bivoltine.
Coccinellids lay extra infertile eggs with the fertile eggs. These appear to provide a backup food source for the larvae when they hatch. The ratio of infertile to fertile eggs increases with scarcity of food at the time of egg laying.
Some species are migratory and form large aggregations during the migratory period. They also form large aggregations when they go into hibernation in Winter.

I Coccinellidi svolgono una o più generazioni l'anno e svernano in genere allo stadio di adulto. Gli accoppiamenti hanno inizio dalla primavera, dopo un periodo di alimentazione.
Le ovideposizioni variano secondo l'etologia. Alcune specie depongono le uova in gruppi di numero variabile da poche unità a qualche decina, altre depongono le uova isolate e sparse sugli stessi organi frequentati dalle prede o fra le uova di queste. Con le uova fertili sono spesso deposte anche uova non fertili. Sembra che queste forniscano una fonte di cibo di riserva per le larve che nasceranno. La proporzione tra uova fertili e uova non fertili dipende dalla scarsità di cibo al momento della deposizione .
L'aspetto tipico di una pupa, con i resti dell'exuvia larvaleLo sviluppo postembrionale passa attraverso quattro stadi larvali e uno di pupa. Larve e adulti hanno in genere la stessa etologia e frequentano lo stesso ambiente. In genere, dopo lo sfarfallamento, l'adulto resta per un breve periodo nello stesso luogo dove si è sviluppato, ma poi si disperde alla ricerca di prede. Sono stati riscontrati fenomeni etologici complessi, riguardanti la migrazione, la riproduzione e il gregarismo, messi in relazione con la disponibilità alimentare.
Il numero di generazioni e la durata di un ciclo di sviluppo sono correlati spesso alla biologia delle abituali prede. Le specie monovoltine attraversano in genere un periodo di quiescenza piuttosto lungo che si protrae dall'estate all'inverno. Le specie che svolgono più generazioni, invece, possono avere talvolta un ciclo sincronizzato con quello delle prede oppure più breve. In generale le specie che attaccano gli Afidi hanno un ciclo riproduttivo più lungo, mentre quelle che si nutrono a spese di Cocciniglie hanno cicli più brevi. La dinamica di popolazione è strettamente legata alla disponibilità di prede, ma in generale i Coccinellidi hanno una fecondità elevata.

eqshannon, Silvio2006, siggi, boreocypriensis, haraprasan, GLEM, maurydv, CeltickRanger, jusninasirun, sweet_universe has marked this note useful
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Critiques [Translate]

I think perhaps "time of Love" is appropriate in human terms:-) I wonder if insects even have instinct in some cases or if it is rote. A very clear capture and considering the bugs...one which I do not believe I have ever seen unless I did as a child but was naive and did not know what was happening. Fine addition Luciano.
bob

  • Great 
  • EOSF1 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1393 W: 119 N: 5267] (23955)
  • [2008-07-29 8:46]

Salut Luciano! C'est une photo faite au microscope?? :-) Bravo pour les beaux détails et le 'moment' spécial, merci pour la belle image!

Mario

Ciao Luciano, ultimamente questo sito sta dventando un po' troppo a luci rosse, io ste dannate non mi sono mai venute bene, complimenti, appena un capello bruciato il bianco, ma quanto pagherei per averla fatta io una così, ciao Silvio

  • Great 
  • siggi Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3097 W: 109 N: 12399] (52850)
  • [2008-07-29 10:03]

Hello Luciano,
excellent macro shot with superb details,lovely moment captured,great sharpness with lighting,perfect focusing and nice composition,
Best regards Siggi

Superb macro capture of these ladybirds my dear friend Luciano.
Greetings from N. Cyprus
Bayram

Ciao Luciano,
this is clearly a couple of the 'Japanese' ladybird Harmonia axyridis,
which shows large variations in colour pattern.
Best wishes, Peter

Hi Luciano,
A lovely capture of this beautiful bugs matting. But I think it is a bit OE. But very good details and a nice closeup composition. Thanks a lot for sharing.

  • Great 
  • GLEM Gold Star Critiquer/Gold Star Workshop Editor [C: 540 W: 87 N: 750] (10)
  • [2008-07-29 12:07]

salut Luciano,
belle image saisie en plein moment de grâce :). Bons détails et intenses couleurs, pour la composition je prèfère avoir un peu plus de recul, mais c'est personnel.

gaetan

Ciao Luciano
Spero che non li abbia disturbati…
esse sono così piacevoli…
amicizie
Laurent

ciao,
une belle macro indiscrete ,peut-etre un peu surexposée?
les couleurs sont tres sympas
vero

Ciao Luciano,
una macro "spinta", ci si avvicina talmente tanto al soggetto che diventa difficile gestire con equilibrio tutta l'immagine, la ripresa grandangolare permette una buona DOF, ma allo stesso tempo fa entrare nell'immagine zone molto contrastate a livello di luce. Credo che tu abbia gestito bene tale situazione e hai ottenuto un ottimo risultato. Grazie e complimenti.
Maurizio

  • Great 
  • gannu Gold Star Critiquer/Gold Note Writer [C: 1001 W: 4 N: 3276] (14759)
  • [2008-07-30 1:57]

Hello Luciano, Either you were too close to the picture or more contrast and brightness opted. But the subject is well defined with a good view. Well done Ganesh

Hello Luciano. Excellent shot and timely too. The tight crop exposed the act beautifully in the frame against the clear background. Thanks for sharing and best regards. Jusni

hello Luciano

héhéhéhéhé it is the second time one of your images
it is laughing me, and it means i love that image,
you are a great paparazzi Luciano !
what a wonderful macro shot, beautiful luminosity,
excellent sharpness and details, TFS

Asbed

FICOOOOOO!
Mai visto due coccinelle che se la spassano come queste due...
Ottima resa dei dettagli e della luce, che con le coccinelle in particolare è sempre difficile da gestire.
Marco

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