Results 51 to 60 of about 429 (149)

Aberrant Pigmentation in a Schooling Cownose Ray (Rhinoptera bonasus) in Chesapeake Bay, Virginia, USA

Ecology and Evolution, Volume 16, Issue 1, January 2026.
We report a rare case of aberrant pigmentation in a cownose ray (Rhinoptera bonasus) observed schooling naturally within Chesapeake Bay, Virginia. Drone and in‐water imagery revealed a piebald‐like pattern without any disruption to coordinated group behavior, providing the first in situ evidence that pigmentation anomalies in this species do not ...
Morgan F. Bennett‐Smith, Taylor Griffith, Helena Janulis, Eloise B. Richardson, Stephen J. Tomasetti   +4 more
wiley   +1 more source

Antibiotic Use in Livestock: A Driver of Resistance in Africa and the Path to Safer Alternatives

MicrobiologyOpen, Volume 14, Issue 6, December 2025.
The incorporation of antibiotics into animal feeds is one of the drivers of antibiotic resistance, a global One Health challenge. To reduce the burden of antibiotic resistance, the use of alternative growth promoters and drugs must be promoted, as well as sensitization and implementation of regulations.
Mercy A. Alabi, Hafizah Y. Chenia, Johnson Lin   +2 more
wiley   +1 more source

First record of leucism in Rock Hyrax Procavia capensis from Ibex Reserve Protected Area, Saudi Arabia

Journal of Threatened Taxa
Pigment anomalies such as leucism and albinism are rare in wild mammals, often linked to genetic or developmental factors and sometimes carry ecological consequences.
Zaffar R. Mir, Naif Alajmi, Ali Alahmari, Ahmad Alobaid, Khalid Almaliki, Faraz Niaz, Naif Alqahtani, Ahmad Boug   +7 more
doaj   +1 more source

LEUCISM RECORD OF Sula leucogaster IN SOUTHEASTERN BRAZIL

Brazilian Journal of Aquatic Science and Technology
This technical note reports the record of a leucistic Brow Booby (Sula leucogaster) in March 2024 in Rio de Janeiro, southeastern Brazil. This record expands knowledge about the occurrence and distribution of leucistic individuals of the species in the Western South Atlantic.
Liliane Lodi, Guilherme Maricato, Luiz Eduardo Albuquerque, Larissa Schmauder Teixeira da Cunha   +3 more
openaire   +1 more source

First records of leucism in eight species of small mammals (Mammalia: Rodentia) [PDF]

Therya, 2016
Leucism is a partial hypopigmentary congenital disorder that indicates low levels of genetic diversity and is considered to be an unusual trait in wild populations. In continental America, few cases of abnormal coloration in vertebrates have been recorded.  This feature can increase the selective pressure on individuals who have it, and can result from
Jorge Brito, Karla Valdivieso-Bermeo
openaire   +1 more source

Microbiota and Quality Indexes of Commercial Sauerkraut and Fermented Cucumbers

Environmental Microbiology Reports, Volume 17, Issue 6, December 2025.
Secundilactobacillus and Levilactobacillus were found to be significantly correlated with the content of cadaverine and histamine in the sauerkraut and fermented cucumbers. The high level of biogenic amines in the tested market samples indicates the need to monitor them as an indicator of the hygienic condition of fermented products.
Renata Choińska, Katarzyna Piasecka‐Jóźwiak, Olga Świder, Agata Żak‐Kułakowicz, Karol Włodarczyk, Juliusz Załuski   +5 more
wiley   +1 more source

First record of leucism for Carollia castanea Allen, 1890 (Phyllostomidae: Carollinae) in southeastern Costa Rica

, 2017
Carollia castanea se distribuye desde Honduras hasta Venezuela. Casos de leucismo no han sido reportados para esta especie pero si para otros filostómidos. Capturamos un adulto de C. castanea con leucismo en la Zona Protectora Las Tablas.
José González-Maya, Rocío Seisdedos-de-Vergara, Diego Gómez-Hoyos, Bernal Rodríguez, David Josué Mejía-Quintanilla   +4 more
core   +2 more sources

Rare Record of Albinism in a New Zealand Fur Seal (Arctocephalus forsteri) Pup With Observations Through the Weaning Period

Ecology and Evolution, Volume 15, Issue 11, November 2025.
This article provides the first known scientific record of albinism in a New Zealand fur seal pup. We describe the individual with a particular focus on its sensory abilities. This individual's birth at a central mainland colony may permit continued study throughout his life, unlike many records of similar conditions in other species.
Alasdair A. Hall, Robyn A. Grant, Jody Suzanne Weir   +2 more
wiley   +1 more source

Peer-reviewed documentation of leucism in white-faced whistling duck Dendrocygna viduata, in Madagascar

Sustainable Environment
We observed an adult individual of White-faced Whistling Duck Dendrocygna viduata exhibiting leucism on the waterbody of the Tsimbazaza Botanical and Zoological Park, in Antananarivo. This anomaly is characterized by a depigmentation of feathers, without
Delphin Rasolonjatovo, Fabrice Seraphin, Benjara Armand, Pruvot Yverlin Z. M.   +3 more
doaj   +1 more source

Colour Confusion: Reviewing Ambiguities in the Identification and Classification of Chromatophore Deficiencies Among Amphibians

Ecology and Evolution, Volume 15, Issue 9, September 2025.
The colour of amphibian skin and eyes is the result of light interacting with multiple chromatophores (xanthophores, iridophores and melanophores), leading to challenges when trying to identify which of these cells are involved in colour abnormalities.
John Gould
wiley   +1 more source