Definition & Betydelse | Engelska ordet HAMMERHEADS

Definition av HAMMERHEADS

1. böjningsform av hammerhead

Exempel på hur du använder HAMMERHEADS i en mening

• The great hammerhead can be distinguished from other hammerheads by the shape of its "hammer" (called the "cephalofoil"), which is wide with an almost straight front margin, and by its tall, sickle-shaped first dorsal fin.
• Phylogenetic analyses based on nuclear and mitochondrial DNA have concluded differently: while the smooth and great hammerheads are closely related, they are not as closely related to the scalloped hammerhead as the other Sphyrna species.
• The eyes, placed at the ends of the cephalofoils, are proportionately smaller than in other hammerheads and equipped with nictitating membranes (protective third eyelids).
• The tawny nurse shark has few natural predators; attacks on this species have been reported from bull sharks (Carcharhinus leucas) and great hammerheads (Sphyrna mokarran), while the related nurse shark has been known to fall prey to tiger sharks (Galeocerdo cuvier) and lemon sharks (Negaprion brevirostris).
• Usual catches included grouper, butterfish, goatfish, grunt, snapper, oldwife and hammerheads (a blue fish which is now rarely seen).
• In 2008, the Department of Primary Industries and Fisheries (DPI&F) and James Cook University (JCU), Australia confirmed that permanent (ferrite) magnets technology repel grey reef sharks, hammerheads, sharp-nosed sharks, blacktip sharks, the vulnerable sawfish and the critically endangered spear tooth shark.
• In 2008, the Department of Primary Industries and Fisheries (DPI&F) and James Cook University, Australia, reported success with permanent magnets in captive studies with grey reef sharks, hammerheads, sharp-nosed sharks, blacktip sharks, sawfish and the critically endangered spear tooth shark.
• The rehabilitation of the bridge was carried out by Freyssinet Prestressed Concrete Company Ltd (FPCC) by strengthening the piers and hammerheads with additional steel brackets and external prestressing of main girders.
• In what CITES has called a "milestone", the oceanic whitetip, porbeagle, and three species of hammerheads will now join the great white, basking and whale shark on CITES Appendix II, effective September 2014.

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