Results 61 to 70 of about 1,233 (179)
ABSTRACT Aquatic ecosystems have been in an alarming state of decline for decades. In particular, estuarine ecosystems have experienced long‐term declines in fish diversity due to factors such as habitat degradation, pollution and altered hydrology. Monitoring these systems is often limited by the difficulty and cost of conventional survey methods.
Jake M. Jackman +7 more
wiley +1 more source
O ''sambaqui de Camboinhas" foi descoberto no interior de uma "duna fóssil", dentro das cotas altimétricas de 7-8m acima do nível do mar, num trecho da Praia de ltaipu, Niterói, RJ.
Fausto Luiz de Souza Cunha +2 more
doaj +1 more source
Sawfishes in Brazil: A Historical Review
ABSTRACT Sawfishes of the genus Pristis are critically endangered rays with key ecological roles in aquatic ecosystems; however, they remain underrepresented in Brazilian scientific literature. This review presents a historical and bibliometric overview of sawfish literature in Brazil, highlighting temporal trends, geographic focus and thematic ...
Reysane de Alencar Sousa Silva +2 more
wiley +1 more source
Molecular identification of sharks from the genus Sphyrna (Elasmobranchii: Chondrichthyes) in Maranhão Coast (Brazil) [PDF]
Sharks of the genus Sphyrna are under intense exploitation globally. In Brazil’s northern coast, this genus represents a high proportion of fisheries landings and comprises four species.
C. F. L. Sodré +7 more
doaj +1 more source
Zooarchaeological Analysis of an Atoll Assemblage From Central Micronesia
ABSTRACT There has been a dearth of archaeological research on atolls in the central‐eastern Caroline Islands of Micronesia. This has limited our understanding of pre‐contact subsistence and settlement strategies in these more marginal and remote environments, particularly in regards to zooarchaeological data.
Philippa Jorissen +2 more
wiley +1 more source
STRUKTUR ANATOMIS VALVULA INTESTINALIS PARI GITAR (Rhinobatos typus)
Rhinobatos typus is included in Elasmobranchii Subclasses which has a unique intestine structure on internal part forms folds called valvula intestinalis as extension surface of food absorption.
Kusrini Kusrini, La Aba
doaj +1 more source
Some information on reproduction and embryonic development of the lesser guitarfish Zapteryx brevirostris in Southern Brazil [PDF]
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
. Souza A.L.M., Mesquita E.F.M., Franco R.M., Kajishima S., Fonseca A.B.M. & Calixto F.A.A. [Sensory evaluation of meat Shortfin Mako Shark (Isurus oxyrinchus) (Elasmobranchii: Lamnidae) sold in the city of Niterói, Rio de Janeiro, Brazil.] Avaliação ...
André Luiz Medeiros de Souza +5 more
doaj
A Formação Irati, Permiano (Cisuraliano) da Bacia do Paraná, destaca-se por importantes características geológicas e paleontológicas. Entre seus fósseis, os crustáceos e répteis Mesosauridae são os mais conhecidos e estudados.
Artur Chahud, Setembrino Petri
doaj +1 more source
Uteri from four pregnant females and two newborn of shortfin mako, Isurus oxyrinchus, were collected in the southeastern region of Brazil, during September, October, and November of 1993 and 1994.
F. E. S. COSTA +3 more
doaj +1 more source

