Results 31 to 40 of about 1,448 (172)

Complete mitochondrial genome and the phylogenetic position of the Bowmouth guitarfish Rhina ancylostoma (Rajiformes, Rhinobatidae). [PDF]

open access: yesMitochondrial DNA B Resour, 2016
In this study, the complete mitochondrial genome of the Bowmouth guitarfish Rhina ancylostoma (Rajiformes, Rhinobatidae) was first determined. The total length of this circle DNA was 17 217 bp, consisted of 37 genes with a typical gene order in vertebrate mitogenome. It had 42 bp short intergenic spaces and 40 bp overlaps. The nucleotide composition in
Si R, Chen H, Ai W, Chen X, Chen S.
europepmc   +4 more sources

Cartilaginous fish diversity in the Western Visayas, Philippines, including two putative unidentified species and the first record of Carcharhinus plumbeus (Elasmobranchii: Carcharhiniformes: Carcharhinidae) [PDF]

open access: yesActa Ichthyologica et Piscatoria
This annotated checklist documents the diversity of cartilaginous fishes, including sharks, batoids (rays and skates), and chimaeras, from Panay and Guimaras islands, Western Visayas, Philippines, through surveys at fish markets and ports.
Roxanne Cabebe-Barnuevo   +5 more
doaj   +3 more sources

A new species of Paraberrapex Jensen, 2001 (Cestoda: Lecanicephalidea) from Squatina guggenheim Marini (Squatiniformes: Squatinidae) off Argentina [PDF]

open access: yes, 2016
Paraberrapex atlanticus sp. n. (Cestoda, Lecanicephalidea) is described from the spiral intestine of the angel shark Squatina guggenheim Marini from coastal waters off Buenos Aires Province, Argentina. Paraberrapex atlanticus sp. n.
Ivanov, Veronica Adriana   +1 more
core   +1 more source

Length-weight relationships of commercially important marine fishes and shellfishes of the southern coast of Karnataka, India [PDF]

open access: yes, 2004
The parameters of the length-weight relationship of the form W = aLb are presented for 51 species of commercially important marine fishes and shellfishes caught along the southern coast of Karnataka, India.
Abdulrahiman, K.P.   +3 more
core   +3 more sources

Some information on reproduction and embryonic development of the lesser guitarfish Zapteryx brevirostris in Southern Brazil [PDF]

open access: yesActa Adriatica, 2007
Individuals of Zapteryx brevirostris were caught from August 2003 to September 2004 using bottom trawl nets in a bay located in Southern Brazil. Total length ranged from 42.8 to 47.3 cm in males and 44.1 to 52.2 cm in females.
Vinícius ABILHOA   +2 more
doaj  

Reproductive biology of the banded guitarfish, Zapterix exasperata (Pisces: Rhinobatidae), in Bahía Almejas, Baja California Sur, Mexico

open access: yesCiencias Marinas, 1995
A description of the reproductive biology of the banded guitarfish, Zapterix exasperata (Jordan and Gilbert) is presented. The study was conducted in a fishing camp located in Bahía Almejas on the west coast of Baja California, from August 1990 to June ...
CJ Villavicencio-Garayzar
doaj   +1 more source

Ecomorphology of oral papillae and denticles of Zapteryx brevirostris (Chondrichthyes, Rhinobatidae) [PDF]

open access: yesZoomorphology, 2016
Elasmobranchs have an impressive range of highly specialized sensory systems shaped over 400 million years of evolution. The morphological analysis of oral papillae and denticle in elasmobranchs elucidates the biological role that these structures play during feeding and ventilation, bringing important descriptive information about ecological ...
Rangel, Bianca de Sousa   +5 more
openaire   +2 more sources

Grupos tróficos de peixes demersais da plataforma continental interna de Ubatuba, Brasil: I. Chondrichthyes Throphic groups of demersal fish community from the continental shelf: Ubatuba, Brazil. I. Chrondrichthyes

open access: yesBrazilian Journal of Oceanography, 1992
Com o objetivo de detectar grupos tróficos, foram analisadas amostras de conteúdos estomacais de sete espécies de peixes cartilaginosos. Os exemplares foram coletados no período de Outubro/85 a Julho/87 na plataforma interna de Ubatuba, SP, Brasil (da ...
Lucy Satiko Hashimoto Soares   +4 more
doaj   +1 more source

Barremian and Aptian (Cretaceous) sharks and rays from Speeton, Yorkshire, north-east England [PDF]

open access: yes, 2004
Bulk sampling of a number of horizons within the upper part of the Speeton Clay Type section has produced teeth and other remains of sharks and rays from several poorly studied horizons.
Applegate   +34 more
core   +1 more source

Teratogenic processes in an embryo without gills and low yolk absorption of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae)

open access: yesBrazilian Journal of Oceanography, 2015
This is the first report of morphological anomaly in embryos of Zapteryx brevirostris (Lesser guitarfish), a very common species in Brazil. The gills were absent, and the pectoral fins were not fully formed nor were they completely fused to the head ...
Wanessa Priscila David do Carmo   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy