Results 61 to 70 of about 522 (154)

Marine Parasite Biogeography Mirrors Host Patterns Across Latitude, Area, and Diversity

open access: yesNew Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
Parasites are integral components of biodiversity, yet they remain poorly represented in large‐scale biogeographic theory. In this study, we test whether marine parasites follow three macroecological patterns established for free‐living taxa, namely that parasite species richness: (1) scales positively with area (both host body size and geographic area)
Thomas C. Morris   +2 more
wiley   +1 more source

Standardized catch rate of cockfish, Callorhinchus callorynchus, in a bottom trawl fishery of Patagonia: Is it possible its use as a predictor of abundance trend?

open access: yesBrazilian Journal of Oceanography, 2015
The catch per unit of effort (CPUE) data of cockfish, Callorhinchus callorynchus, during 1986-2011 was evaluated for the bottom trawl fishery of the San Matías gulf (Patagonia, Argentina).
Juan F. Bernasconi   +2 more
doaj   +1 more source

First report of four deep-sea chondrichthyans (Elasmobranchii and Holocephali) from Andaman waters, India with an updated checklist from the region [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2018
This paper confirms the new distributional records of four rare deep-water chondrichthyans viz. sharpnose sevengill shark, Heptranchias perlo (Bonnaterre, 1788); bluntnose sixgill shark, Hexanchus griseus (Bonnaterre, 1788); bramble shark, Echinorhinus ...
R.R. Kumar   +4 more
doaj   +3 more sources

Gene expression, evolution, and the genetics of electrosensing in the smalltooth sawfish, Pristis pectinata

open access: yesEcology and Evolution, Volume 14, Issue 5, May 2024.
Sawfishes (Pristidae) are large, highly threatened rays named for their tooth‐studded rostrum, which is used for prey sensing and capture. To better understand the genetic underpinnings of these unique animals, we used RNA‐seq data from multiple tissues to annotate a publicly available genome and compared this data to other elasmobranchs.
Taiya M. Jarva   +6 more
wiley   +1 more source

Registro Fossílifero das Raias (Chondrichtes-Batomorphi) em Bacias Sedimentares Brasileiras. [PDF]

open access: yesAnuário do Instituto de Geociências, 2007
A classe dos Chondrichthyes é representadapelos Elasmobranchii (tubarões e raias) e Holocephali(quimeras). A presença de fósseis de raias em baciassedimentares brasileiras é conhecida desde o séculoXIX, sendo representadas atualmente por seisfamílias ...
Paloma Tâmega da Silva Abreu Moreira   +1 more
doaj  

Increased signal of fishing pressure on community life‐history traits at larger spatial scales

open access: yesGlobal Ecology and Biogeography, Volume 33, Issue 5, May 2024.
Abstract Aim Human pressure in the oceans is pervasive and affects marine life. Understanding species' differing responses to human pressure, and how human pressure compares to other environmental variables in shaping marine communities is needed to facilitate the sustainable management of the seas.
Caroline M. McKeon   +4 more
wiley   +1 more source

Darwin, Haeckel, and the “Mikluskan gas organ theory”

open access: yesDevelopmental Dynamics, Volume 253, Issue 4, Page 370-389, April 2024.
Abstract A previously unknown reference to the Russian ethnologist, biologist, and traveler Nikolai N. Miklucho‐Maclay (1846–1888) was discovered in correspondence between Charles Darwin (1809–1882) and Ernst Haeckel (1834–1919). This reference has remained unknown to science, even to Miklucho‐Maclay's biographers, probably because Darwin used the ...
Ingmar Werneburg   +2 more
wiley   +1 more source

Chondrichthyans of the San Matías Gulf, Patagonia, Argentina Los condrictios del Golfo San Matías, Patagonia, Argentina

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2011
The San Matías Gulf (SMG; 41°- 42° S; 64°- 65° W) is the largest gulf in Northern Patagonia, Argentina. Up to date, the chondrichthyan fauna of this area has not been reported.
María R PERIER   +5 more
doaj  

Primer registro de Harriota Raleighiana (Chondrichthyes: Holocephali: Rhinochimaeridae) en la costa del Pacífico central de México

open access: yesRevista Mexicana de Biodiversidad, 2007
ESTE ES EL PRIMER REGISTRO DE LA QUIMERA NARIZONA, HARRIOTA RALEIGHIANA GOODE Y BEAN 1895, EN EL LITORAL DEL PACÍFICO CENTRAL DE MÉXICO, CON BASE EN UNA HEMBRA MORIBUNDA, RECOLECTADA EN LA SUPERFICIE DEL OCÉANO SOBRE AGUA MUY PROFUNDA CERCA DE ...
MA. DEL CARMEN JIMÉNEZ QUIROZ   +3 more
doaj   +1 more source

Global governance guard rails for sharks: Progress towards implementing the United Nations international plan of action

open access: yesFish and Fisheries, Volume 25, Issue 1, Page 1-17, January 2024.
Abstract There is growing concern over the conservation status of sharks and relatives exposed to fishing mortality. The Food and Agriculture Organization of the United Nations in 1999 adopted the International Plan of Action for the Conservation and Management of Sharks (IPOA), which provides nations with advice on adopting and implementing national ...
Eric Gilman   +5 more
wiley   +1 more source

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