Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and raysJohn Tee-Van Sears Foundation for Marine Research, Yale Univ., 1948 |
Dall'interno del libro
Risultati 1-3 di 82
Pagina 191
... mature males at 37 cm . With respect to the average length and weight of adolescent and fully mature males and females , there appear to be significant differences between the Long Island and Block Island Sound populations : Adolescent ...
... mature males at 37 cm . With respect to the average length and weight of adolescent and fully mature males and females , there appear to be significant differences between the Long Island and Block Island Sound populations : Adolescent ...
Pagina 245
... mature females develop large thorns , widely spread , over the posterior corners of the pectorals , the thorny areas expanding over the posterior lobes of their pelvics ; a few thorns also appear on the anterior lobes . Mature males ...
... mature females develop large thorns , widely spread , over the posterior corners of the pectorals , the thorny areas expanding over the posterior lobes of their pelvics ; a few thorns also appear on the anterior lobes . Mature males ...
Pagina 283
... mature males in several irregular rows , covering a roughly triangular area that extends forward along margins of ... mature females ; its length in front of mouth about 1.6-1.8 times as long as distance between nostrils in young and in ...
... mature males in several irregular rows , covering a roughly triangular area that extends forward along margins of ... mature females ; its length in front of mouth about 1.6-1.8 times as long as distance between nostrils in young and in ...
Sommario
SAWFISHES GUITARFISHES SKATES and RAYS | 1 |
Genus Zapteryx | 74 |
Suborder Myliobatoidea | 331 |
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Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Visualizzazione estratti - 1953 |
Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Anteprima non disponibile - 1948 |
Parole e frasi comuni
Acad Amer batoids Bigelow and Schroeder biol Brazil breadth Breder Bull Carolina cartilage caudal fin center of cloaca Chesapeake Bay claspers Coast color Comp concave Copeia Dasyatis Dermal denticles descr distance between inner dorsal fin embryos Evermann exposed nostrils eyes fathoms female Florida Fowler front of mouth front of orbits Garman genus gill openings Gulf Gulf of Maine Harv Hist inner ends Interspace Jersey Jordan Lacépède length of base listed lobe long as distance Lower surface mature males median Müller and Henle nasal curtain pelvic fins Philad Poiss posterior margin prickles Proc Raja Rays rearward Rio de Janeiro rostral rostral cartilage rounded Sawfishes side Skates spiracles Study Material tail spine teeth thorns tip of snout tip of tail Torpedo transverse type species U. S. Bur U. S. Comm U. S. nat upper surface Woods Hole Zool