Results 61 to 70 of about 1,233 (179)

Multi‐Seasonal eDNA Metabarcoding Highlights a Resurgence in Fish Diversity Across a Severely Impacted Estuarine Ecosystem

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
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

Ocorrência de vertebrados holocênicos marinhos, Elasmobranchii e Cetacea, no "Sambaqui de Camboinhas", ltaipu, Niterói, estado do Rio de Janeiro

open access: yesRevista de Arqueologia, 1986
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

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 4, April 2026.
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]

open access: yesBrazilian Journal of Biology
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

open access: yesArchaeology in Oceania, Volume 61, Issue 1, Page 177-198, April 2026.
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)

open access: yesFlorea: Jurnal Biologi dan Pembelajarannya, 2019
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]

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  

Sensory evaluation of meat Shortfin Mako Shark (Isurus oxyrinchus) (Elasmobranchii: Lamnidae) sold in the city of Niterói, Rio de Janeiro, Brazil

open access: yesBrazilian Journal of Veterinary Medicine, 2015
. 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  

Paleontologia da fácies arenosa do membro Taquaral (Permiano) no Estado de São Paulo: estado da arte e contribuições adicionais

open access: yesGeologia USP. Série Científica, 2016
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

Aspects of the reproductive biology of the shortfin mako, Isurus oxyrinchus (Elasmobranchii Lamnidae), in the Southeastern region of Brazil

open access: yesBrazilian Journal of Biology
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

Home - About - Disclaimer - Privacy