Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology

01 24 September 2026

DOI 10.1007/s00360-026-01708-6

From electrocardiography to energetics: methods, constraints, and practical considerations for heart rate biologging in small animals

Open DOI

Shannon E. Currie, Asgeir Bjarnason, Clare Stawski

Physiological biologging is a flourishing field enabling researchers to answer fundamental questions about animal behaviour and physiology in their natural environment. As biologging devices are further miniaturised their use on small sp...

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02 24 September 2026

DOI 10.1007/s00360-026-01716-6

Nomadic songbirds achieve rapid increases in thermogenic capacity during cold acclimation while maintaining low corticosterone

Open DOI

Jessica R. Karr, Jamie M. Cornelius

03 15 September 2026

DOI 10.1007/s00360-026-01715-7

Carbohydrate content in the diet of red-bellied pacu (Piaractus brachypomus) and its effects on growth performance, nutrient deposition, digestive enzymes, lipogenesis, and glycolysis

Open DOI

da Silva, Rafael Carvalho, Carlos Eduardo Copatti et al.

This study evaluated the effects of varying dietary carbohydrate (CBH) levels on growth performance, body composition, hematological parameters, metabolism, and intestinal and hepatic enzyme activity in juvenile red-bellied pacu ( Piarac...

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04 10 September 2026

DOI 10.1007/s00360-026-01711-x

Seasonal variations in the polysomnographic sleep/wake cycle and activity/rest pattern in the dromedary camel (Camelus dromedarius)

Open DOI

Younes Beniaich, Hicham Farsi, Mohammed Piro et al.

Seasonal variations influence environmental factors such as ambient temperature, sunlight duration and the availability of food resources, leading many species to develop behavioral and physiological adaptations. The present study explor...

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05 10 September 2026

DOI 10.1007/s00360-026-01712-w

Effect of GnRH analogue on steroidogenesis in the teleost fish striped murrel (Channa striata)

Open DOI

Prachi Asgolkar, Kiran D. Rasal, V. M. Sheetal et al.

The striped murrel (Channa striata) is a high-value food fish in Southeast Asia; however, captive breeding success has remained limited due to a lack of knowledge about its reproductive physiology. This study examined the impact of synth...

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06 10 September 2026

DOI 10.1007/s00360-026-01714-8

Thermal biology characteristics of the Caspian whipsnake (Dolichophis caspius, Gmelin, 1789) under natural and laboratory conditions

Open DOI

Marko Anđelković, Vukašin Bjelica, Margareta Lakušić et al.

Reptiles rely on behavioural thermoregulation to maintain optimal body temperature (Tb), essential for many physiological functions. However, thermal biology remains poorly studied in many snake species, including the Caspian whipsnake (...

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07 9 September 2026

DOI 10.1007/s00360-026-01691-y

Cell-cycle genes in the mussel Mytilus galloprovincialis are cued by aerial heat stress in a fluctuating tidal environment

Open DOI

Helen C. Hong, Edwin A. Solares, Michael M. Abdelsayed et al.

Mytilus galloprovincialis is a sessile, facultative anaerobic mussel inhabiting intertidal zones, where it experiences daily fluctuations in oxygen, temperature, and food availability. These environmental fluctuations require coordinated...

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08 8 September 2026

DOI 10.1007/s00360-026-01704-w

Altered gut microbial networks and metabolic homeostasis in grass carp exposed to Microcystis aeruginosa

Open DOI

Lixin Ma, Xiaomin Zheng, Junyuan Tan et al.

09 2 September 2026

DOI 10.1007/s00360-026-01713-9

Pectoralis muscle fiber ultrastructure and molecular regulators of hypertrophy change seasonally, but not with thermal acclimation in house sparrows (Passer domesticus)

Open DOI

Jack Bennink, Priscilla Van Wynsberghe, Rachel Mueller et al.

10 2 September 2026

DOI 10.1007/s00360-026-01707-7

Habitat rather than phylogeny may explain exoskeleton composition of three common land crabs from Christmas Island

Open DOI

Katharine A. Clayton, John I. Spicer, Linn Wiberg et al.