Results 111 to 120 of about 129,490 (315)

Ultrastructural studies of the morphological variations of the egg surface and envelopes of the African catfish Clarias gariepinus (Burchell, 1822) before and after fertilisation with a discussion of fertilisation mechanism

open access: yesScientia Marina, 2006
Much of the existing knowledge of the mechanisms involved in teleost fertilisation is based on a few small model species that have no commercial value. Research is therefore urgently required to address mechanisms involved in fertilisation in species of ...
Imam A. A. Mekkawy, Alaa G. M. Osman
doaj   +1 more source

Opportunities for Public Aquariums to Increase the Sustainability of the Aquatic Animal Trade [PDF]

open access: yes, 2012
The global aquatic pet trade encompasses a wide diversity of freshwater and marine organisms. While relying on a continual supply of healthy, vibrant aquatic animals, few sustainability initiatives exist within this sector.
Andrews, Chris   +9 more
core   +1 more source

Freshwater Aquarium Fishes [PDF]

open access: yesNature, 1963
Freshwater Fishes of the World By Dr. Gunther Sterba. Translated and revised by Dr. Denys W. Tucker. Pp. 878 + 192 plates. (London: Vista Books, Longacre Press, Ltd., 1962.) 70s. net.
openaire   +1 more source

A Systemic Model for Understanding Business Interactions With Biodiversity and Ecosystems

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Biodiversity loss and ecosystem degradation represent critical threats to human well‐being and economic resilience, challenging businesses to understand and manage their interdependence with natural systems. This study develops a systemic framework—the BioModel—that elucidates the reciprocal relationship between businesses, biodiversity, and ...
Lino Cinquini   +2 more
wiley   +1 more source

Bibliometric analysis of MOF-based fluorescence detection in food safety: Development, multi-strategy optimization, and future AI integration

open access: yesFood Chemistry: X
The escalating incidence of foodborne diseases challenges global public health. Metal-organic framework (MOF)-based fluorescence detection offers a robust solution for food safety assurance, leveraging advantages of high sensitivity, rapid response, and ...
Mao Zhang   +5 more
doaj   +1 more source

The food of coarse fish [PDF]

open access: yes, 1940
Remarkably little has been published on the feeding habits of the non-salmonid fishes of British fresh waters. The following report briefly summarizes the results obtained from the examination of the stomach contents of some 2,700 fish, belonging to 19 ...
Hartley, P.H.T.
core  

Ecological models at fish community and species level to support effective river restoration

open access: yes, 2013
RESUMEN Los peces nativos son indicadores de la salud de los ecosistemas acuáticos, y se han convertido en un elemento de calidad clave para evaluar el estado ecológico de los ríos.
Olaya Marín, Esther Julia
core   +1 more source

From Green Governance to Biodiversity Strategy: The Role of Environmentally Experienced Directors in Chinese Firms

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study investigates how directors with environmental protection (EP) backgrounds influence corporate biodiversity concern (BIO) among Chinese A‐share listed firms from 2008 to 2023. Drawing on Upper Echelons Theory, we argue that directors' environmental expertise shapes firms' biodiversity strategies.
Chengming Huang   +2 more
wiley   +1 more source

Rapid adaptive evolution of colour vision in the threespine stickleback radiation. [PDF]

open access: yes, 2016
Vision is a sensory modality of fundamental importance for many animals, aiding in foraging, detection of predators and mate choice. Adaptation to local ambient light conditions is thought to be commonplace, and a match between spectral sensitivity and ...
Heckman, Nancy   +4 more
core  

Notes on the Freshwater Fish of Madras

open access: yesRecords of the Zoological Survey of India, 1916
No Abstract.
openaire   +2 more sources

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