Giant kilam - mafi girma a Shellfish

Na tabbata da yawa daga ka ji cewa babbar kilam aka kama a 1956 kashe bakin tekun na Japan tsibirin Ishigaki. Sun juya a kira su giant kilam, vesivshaya 333 kg tare da wani tsawon 1,16 mita. Bayan karanta yau labarin, za ku ji ƙarin koyo game da mazaunan karkashin ruwa zurfin.

mazauninsu

Wadannan Refayawa zauna acan karkashin India da kuma Pacific tekuna. Amma hakikanin mulkin clams an dauke da Great Shamaki Reef, ayi kashe bakin tekun gabashin Australia. A nan ne, a cikin sararin sarari na m, densely overgrown tare da kowane irin murjãni, gida mafi girma Shellfish.

Bugu da kari, shi za a iya gani a cikin Bahar Maliya. Yana da ban sha'awa cewa sun zauna ne ba kawai m ruwa, amma kuma zurfin ba fiye da ɗaya da ɗari mita.

tsarin fasali

Giant kilam harsashi yana da wata babbar kunsha na biyu bude yatsun directed zuwa gaba. Alkyabbar mollusc ne fãce fata folds. Ya kunshi biyu yadudduka. Waje - ferrous da kuma sanya a cikin gida musamman cilia ƙungiyoyi ta hanyar abin da ruwa shiga alkyabbar kogo.

Bugu da kari, da most Shellfish a duniya yana gills, kama modified ctenidium. Kowace daga cikinsu kunshi biyu farantin rabo. Wadannan halves suna da alaka da juna ta hanyar da ake kira filiform petals. Gills clams yi da tace aiki, zuriya daga abinci barbashi. Har ila yau, wannan babbar tẽku mai zurfi, mazauni, akwai V-dimbin yawa koda, daya karshen wanda ya buɗe a cikin pericardium, da kuma na biyu - a alkyabbar kogo.

Taƙaitaccen bayanin bayyanar

Kamar lura cewa wannan giant kilam burge tare da size. Its tsawon na iya zama har zuwa daya da rabi mita, da kuma nauyi ne game da ɗari biyu da kilo. Bugu da kari, da aka sani a hukumance rajista lokuta na kamawa mafi m samfurori. Kamar yadda aka ambata a baya, clams, kama da Japan Coast, ya fadi a cikin littafin Records.

Sha'awa, da tsawon rayuwar jama'a da wadannan babbar halittu ne game da karnuka uku. The most kilam ban mamaki launuka iri-iri. A yanayi, akwai launin toka, rawaya, blue, duhu blue, turkos, kore da launin ruwan kasa mutane. An tabbatar da cewa ya dafa ƙaddara da launi na unicellular algae rai a cikin alkyabbar Refayawa. Amma ga kwatami, ta launuka ne ba don haka bambancin. Kullum, an rufe da ƙasa barbashi.

haifuwa

Kamar lura cewa babbar kilam - a hermaphrodite. Amma su ne musamman a cewa suna da ikon giciye-hadi. A ya fi girma da yawan jama'a size clams, da hakan chances na bayyanar da gaba zuriya. An sani cewa balagagge mutane iya jefa da dama miliyan qwai.

A sakamakon hadi da su bayyana kankanin qwai, kuma daga baya suka juya zuwa larvae tare da m bawo, da ake kira trochophores. Ga na gaba kwana goma sha huɗu, suka motsa tare da plankton a cikin teku, ruwa. Girma, da suka nutse a kasa da kuma fara rayayye neman manufa wuri domin a nan gaba gida. Bayan samu wani m substrate matasa tridacna rungumi shi ta wajen byssus zaren. Kamar yadda suka ci gaba da wadannan hankali mutu makala. Balaga da mutane zare jiki kwance a kasa, rike shi da da kansa nauyi.

Abin da ya ci babbar kilam?

Dalili na rage cin abinci ne plankton da slurry kunshi kwayoyin barbashi a cikin ruwa shafi. Ikon ake kawota ta tace ruwa shigar da alkyabbar rami tridacna. The abinci ne gauraye da ruwa, aka motsi saboda cilia. A sakamakon haka, a bakin kilam, wanda shi ne kusa da gaba tsoka-contactor, da kananan guda na abinci zuwa pre-rabu daga ma'adinai impurities. Daga can suka tafi zuwa cikin esophagus sa'an nan da ciki. A karshen tafi foregut, hankali ya ke sāke zuwa baya.

Bugu da kari, wadannan giant mazaunan cikin tẽku mai zurfi ciyar a kan symbiotic algae, ko zooxanthellae. Suka boye a lokacin farin ciki folds na alkyabbar rami na mollusc da kuma lokaci-lokaci zuwa nike su.

aikace-aikace

Tun zamanin da, da harsashi na wannan kyakkyawan giant amfani da mazauna yankunan a matsayin wani gini abu. Bugu da kari, sun haifar da duk wani nau'i na crafts da kuma iyali abubuwa. Har ila yau daga cikin fuka-fuki sawed da'irar aiki tsabar kudin aiki.

Lokaci-lokaci don Tridacnids farauta domin lu'u-lu'u. A cewar wasu rahotanni, a daya misali Shellfish nauyi da aka samu game da bakwai kilo, kuma a ashirin da uku santimita dogon. A cikin 'yan shekarun nan, da harsashi na wadannan halittu suna rayayye snapping yawon bude ido. Saboda haka, size, na yawan jama'ar da aka ragewa clams.