Results 131 to 140 of about 12,223 (236)

Effects of algal and animal food combinations on surfacing activity and food utilization in the climbing perch Anabas scandens [PDF]

open access: yes, 1977
A. scandens was fed on five different combinations of the alga Spirogyra maxima and goat-liver. With increasing liver supplementation, the following increases were noted: consumption of food from 31 to 152 cal/g live fish•day, assimilation efficiency ...
Pandian, T J   +2 more
core  

High‐speed infrared video analysis of sonations in the scissor‐tailed nightjar Hydropsalis torquata

open access: yesJournal of Avian Biology, Volume 2026, Issue 3, May 2026.
Many species of nightjar reportedly produce short, impulsive wing sounds during courtship, but the kinematics and physical mechanisms of sound production remain speculative. Using synchronized infrared high‐speed video and audio recordings we describe the mechanism of sound production of a sonation in the nocturnal family Caprimulgidae; the wing ...
Juan Ignacio Areta, Christopher J. Clark
wiley   +1 more source

Effects of Partner Workload and Increasing Environmental Temperature on Nestling Provisioning and Body Temperature in a Declining Aerial Insectivore

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 4, Page 414-426, May 2026.
ABSTRACT With climate change, birds will face increasing thermoregulatory demands, which may alter reproductive behaviors such as offspring provisioning. Experimental studies have shown that the provisioning capacity of female tree swallows (Tachycineta bicolor) is limited by their risk of overheating. Given that parental investment strategies may vary
Megan C. Heft   +2 more
wiley   +1 more source

Population dynamics of Townsend's big‐eared bats: effect of age and drought on survival

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
We estimated age‐specific yearly survival of female Townsend's big‐eared bats in Inyo and Mono Counties, California. We found that both juvenile and adult survival were negatively impacted by drought, and that detection probability was lower for hand‐recapture than for bats detected via pass‐through antenna arrays.
Natalie M. Hamilton   +3 more
wiley   +1 more source

Optimization of growth rate and feeding efficiency of four economically important in the bioflocs system

open access: yesJurnal Natural
. Research and development of biofloc aquaculture system until now only in the range of 14-15 species conducted.   Even though this technology is able to increase production several times compared to conventional systems, so it is necessary to diversify ...
AGUSSYARIF HANAFIE   +2 more
doaj   +1 more source

The distribution of native and introduced species of crayfish in Austria [PDF]

open access: yes, 1999
This account concentrates on the six species of crayfish found in Austria, and the current state of knowledge on their distribution and laws affecting conservation.
Pockl, Manfred
core  

Acoustic indices are not useful for biodiversity research

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 5, Page 1506-1518, May 2026.
Abstract Biodiversity assessment using passive acoustic monitoring has historically been challenging due to the limited availability of multi‐species acoustic detectors. In this context, acoustic indices were introduced as an alternative way to represent species diversity in acoustic datasets.
Larissa S. M. Sugai   +6 more
wiley   +1 more source

An alternative bioassay using Anabas testudineus (Climbing perch) cholinesterase for metal ions detection [PDF]

open access: yes, 2016
Climbing Perch or its scientific name, Anabas testudineus is one of the freshwater fish belonging to the family of Anabantidae. It is widely distributed in ponds, swamps and estuaries in Asia.
Ariff Khalid   +8 more
core  

Taxonomic revision and conservation concerns of the trapezitine genus Croitana Waterhouse, 1932 (Lepidoptera: Hesperiidae) from Australia

open access: yesAustral Entomology, Volume 65, Issue 2, May 2026.
Abstract Croitana Waterhouse, 1932 (Trapezitinae) is a small genus of skippers endemic to Australia, with most species restricted to semi‐arid and arid biomes where the larvae specialise on grasses (Poaceae) in the genera Neurachne R.Br., Enteropogon Nees and Austrostipa S.W.L. Jacobs & J.Everett.
Michael F. Braby
wiley   +1 more source

Effects of dietary supplementation of spray dried hog plum (Spondias pinnata (L.f.) Kurz) fruit powder on growth, digestive enzyme activity, and skin mucus immune parameters of climbing perch (Anabas testudineus (Bloch, 1972)

open access: yesVeterinary Integrative Sciences
The effects of dietary supplementation of spray-dried hog plum (Spondias pinnata (L.f.) Kurz) fruit powder (SPP) on growth, digestive enzyme activity, and skin mucus immune parameters of climbing perch (Anabas testudineus (Bloch, 1972)) were ...
Wilawan Promprom   +4 more
doaj   +1 more source

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