Results 71 to 80 of about 976 (196)

Visual Cues Can Alter the Behavioural Responses of Dragonfly Larvae to Chemical Alarm Cues

Ethology, EarlyView.
Using a controlled experimental approach, we examined how chemical and visual cues influence antipredator behaviour in Aeshna cyanea larvae and tested whether risk‐related information can be socially transmitted among nearby conspecifics. Our results show that dragonfly larvae do not copy the antipredator responses of others, but visual cues alter how ...
Zoltán Tóth, Gabriella Kőmüves, Benjamin László Lőczi, Magdolna Olívia Szelényi   +3 more
wiley   +1 more source

Molecular detection ofLeishmaniaspp. in road-killed wild mammals in the Central Western area of the State of São Paulo, Brazil

Journal of Venomous Animals and Toxins including Tropical Diseases, 2014
Background Road-killed wild animals have been classified as sentinels for detecting such zoonotic pathogens asLeishmaniaspp., offering new opportunities for epidemiological studies of this infection.Methods This study aimed to evaluate the presence ...
Virginia Bodelão Richini-Pereira, Pamela Merlo Marson, Enio Yoshinori Hayasaka, Cassiano Victoria, Rodrigo Costa da Silva, Hélio Langoni   +5 more
doaj   +1 more source

Colour Polymorphism in Coconut Crabs Is Under Relaxed Selection From Conspecifics?

Ethology, EarlyView.
Coconut crabs are either red or blue irrespective of age or sex, are nocturnal and have very few predators. This experimental study shows that they do not use conspecific's colour but do use relative size to settle competitive interactions over food in the wild.
Tim Caro
wiley   +1 more source

Anatomical Variations of the Caudomedial Antebrachial Muscles in the Crab-Eating Fox (Cerdocyon thous) [PDF]

International Journal of Morphology, 2018
SUMMARY: The crab-eating fox (Cerdocyon thous) is a wild canid distributed in South America, which is susceptible to traumas caused by captors, accidents on roads, and traps. Due to these events their thoracic limbs can be involved at the level of the forearm, therefore, knowledge of the gross anatomy of its muscles is important in order to develop ...
Vélez-García, Juan Fernando, Patiño-Holguín, Catalina, Duque-Parra, Jorge Eduardo   +2 more
openaire   +2 more sources

Capelin Size, Condition, and Abundance Through Multiple Heatwaves in Alaska

Fisheries Oceanography, EarlyView.
ABSTRACT Capelin (Mallotus spp.) are pelagic forage fishes that can be especially abundant in sub‐arctic marine ecosystems and are important prey for upper trophic‐level consumers. Abundance and distribution of capelin have been linked to ocean temperature, but the magnitude and directionality of thermal sensitivity can vary regionally.
Robert M. Suryan, Jacek Maselko, Emily A. Fergusson, Fletcher Sewall, Johanna J. Vollenweider, Alexander G. Andrews III, James M. Murphy, Ellen M. Yasumiishi   +7 more
wiley   +1 more source

Environmental Drivers of Jumbo Squid During Fishery Collapse in the Gulf of California (2019–2024)

Fisheries Oceanography, EarlyView.
ABSTRACT The jumbo squid (Dosidicus gigas) is a cephalopod endemic to the eastern Pacific with significant ecological and economic importance. Its exploitation in the Gulf of California (GC) peaked in the 1990s, with catches exceeding 100,000 tons, but collapsed in 2009 and virtually disappeared by 2015, largely due to environmental changes and ...
Mario Vásquez‐Ortiz, Juan Roberto F. Vallarta‐Zárate, Jesús E. Osuna‐Soto, Emma Verónica Pérez‐Flores, Leslie Altamirano‐López, Ramón Isaac Rojas‐González   +5 more
wiley   +1 more source

Developing a DNA metabarcoding method to identify diet taxa in Neotropical foxes

Frontiers in Ecology and Evolution
Pampas and crab-eating foxes are medium-sized canids living in sympatry in the middle east of South America. Studies on the diet composition of these species provide a deep understanding of their ecological roles in the ecosystem structure and regulation.
Natalia Mannise, Natalia Mannise, Mariana Cosse, Gonzalo Greif, Nadia Bou, Carlos Robello, Carlos Robello, Susana González, Andres Iriarte   +8 more
doaj   +1 more source

Seed dispersal of Solanum thomasiifolium Sendtner (Solanaceae) in the Linhares Forest, Espírito Santo state, Brazil Dispersão de sementes de Solanum thomasiifolium Sendtner (Solanaceae) na Floresta de Linhares, Espírito Santo, Brasil

Acta Botânica Brasílica, 2009
The aim of this study was to analyse seed dispersal and establishment of Solanum thomasiifolium in an area of "nativo" vegetation in Espirito Santo state on the southeastern Brazilian coast.
João Vasconcellos-Neto, Lidiamar Barbosa de Albuquerque, Wesley Rodrigues Silva   +2 more
doaj   +1 more source

Intra‐annual energy density cycles of spring‐ and fall‐spawning Atlantic herring Clupea harengus reveal different reproductive allocation tactics

Journal of Fish Biology, EarlyView.
Abstract Atlantic herring Clupea harengus are total spawners that exhibit a large degree of reproductive plasticity and have substantial intra‐annual variation in their energetic condition. Recent research suggests that the species may be declining in energetic condition in the northwest Atlantic Ocean from the few historical records, but comparisons ...
Joseph B. Warren, Mark J. Wuenschel, Kenneth Oliveira   +2 more
wiley   +1 more source

Year‐round colony‐level differences in foraging behaviour and diel activity of yellow‐legged gulls from natural and urban colonies

Journal of Zoology, EarlyView.
GPS‐tracked yellow‐legged gulls from urban (Porto) and natural (Berlenga) colonies showed contrasting foraging strategies. Urban gulls remained near cities and followed human routines, while natural gulls foraged farther and used marine habitats. Abstract Urbanisation has led to increased populations of opportunistic species like gulls, driven by the ...
R. R. Fernandes, J. A. Ramos, J. P. de Faria, D. M. Matos, I. dos Santos, N. Oliveira, P. Rodrigues, V. H. Paiva   +7 more
wiley   +1 more source