Results 51 to 60 of about 6,853 (205)

Mid-Cretaceous acanthomorph fishes with the description of a new species from the Turonian of Lac des Bois, Northwest Territories, Canada

open access: yesVertebrate Anatomy, Morphology, Palaeontology, 2016
A single specimen of a new acanthomorph fish is described from a Turonian locality sampling the northern part of the Cretaceous Western Interior Seaway.
Alison M Murray
doaj   +3 more sources

A multiplex PCR approach for the molecular identification and conservation of the Critically Endangered daggernose shark

open access: yesEndangered Species Research, 2017
The daggernose shark Isogomphodon oxyrhynchus is an inshore tropical species endemic to the coastal waters off northeastern South America with limited distribution and restrictive biological traits.
Nachtigall, PG   +4 more
doaj   +1 more source

Tracking Aquatic Biodiversity With Environmental DNA: A Study in Quebec's Mining Region

open access: yesEnvironmental DNA, Volume 7, Issue 5, September–October 2025.
This study assesses the effectiveness of environmental DNA (eDNA) for monitoring fish species in mining‐impacted waters of Quebec's James Bay region. eDNA analyses detected key species, including culturally significant ones, and revealed potential biodiversity impacts, such as reduced detectability of lake sturgeon in areas with habitat disturbance and
Fidji Sandré   +4 more
wiley   +1 more source

FAMILY TERAPONTIDAE IN GIANH ESTUARY AND GIANH DOWNSTREAM FROM VIETNAM

open access: yesStudia Universitatis Moldaviae: Stiinte reale si ale naturii, 2016
Analysis and identification of 42 specimens of family Terapontidae collected from Gianh estuary and Gianh downstream in Quang Binh province in north center region Vietnam.
USM ADMIN
doaj  

Ptychadena oxyrhynchus

open access: yes, 2021
Ptychadena oxyrhynchus (Smith, 1849) Sharp-nosed Grass Frog Material: Two females, NGK-Nimba 0040, NGK-Nimba 0041, and one male, NGK-Nimba 0042 (Fig. 13 F). Comments: Ptychadena oxyrhynchus is a large frog with extremely robust and long hind legs. It occurs in savannahs and edges of the forest zone across sub-Saharan Africa (Rödel 2000; Channing and ...
Kanga, Kouassi Philippe   +9 more
openaire   +2 more sources

FAMILY TERAPONTIDAE IN GIANH ESTUARY AND GIANH DOWNSTREAM FROM VIETNAM

open access: yesStudia Universitatis Moldaviae: Stiinte reale si ale naturii, 2017
Analysis and identification of 42 specimens of family Terapontidae collected from Gianh estuary and Gianh downstream in Quang Binh province in north center region Vietnam.
Ho Anh TUAN
doaj  

Die Chemie und Biologie der Tetrodotoxin Naturstofffamilie

open access: yesAngewandte Chemie, Volume 137, Issue 35, August 25, 2025.
Tetrodotoxin ist vor allem als das Gift des Kugelfisches bekannt, einer Delikatesse in der japanischen Küche. Seine Toxizität beruht auf der selektiven Blockade von NaV Kanälen, wie am Beispiel der NaV1.7 Pore dargestellt, wobei das DEKA Motiv hervorgehoben ist, das für die Durchlässigkeit von Natriumionen verantwortlich ist.
Benedikt Nißl   +6 more
wiley   +1 more source

Close to extinction? The collapse of the endemic daggernose shark (Isogomphodon oxyrhynchus) off Brazil

open access: yesGlobal Ecology and Conservation, 2016
The daggernose shark, Isogomphodon oxyrhynchus is endemic to the northern of South America from Trinidad and Tobago to Tubarão bay in Maranhão state (Brazil) where collapsed since the 1990’s, due to several gillnet fisheries for teleost fishes, fisheries
Rosangela Lessa   +2 more
doaj   +1 more source

On the Oxyrhynchus Papyri [PDF]

open access: yesThe Classical Review, 1900
n ...
openaire   +2 more sources

Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing

open access: yesFish and Fisheries, Volume 26, Issue 3, Page 473-487, May 2025.
ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard threatened species have increasingly focused on retention bans to reduce bycatch mortality. However, the population effects of such measures remain unevaluated across species.
Leonardo Manir Feitosa   +7 more
wiley   +1 more source

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