Invertebrate

Tarantula welfare may be improved with greater environmental complexity: A preliminary behavioral study with Brazilian black tarantulas (Grammastola pulchra)

Increased environmental complexity has positive effects on the welfare status of vertebrates living in human care; however, this line of research has received little focus in invertebrates. Here we conducted a preliminary investigation of Brazilian black tarantula (Grammastola pulchra) behavior...

Year Published: 2024Topics: Environmental Enrichment, Husbandry & ManagementAnimal Type: Insect & Spider, Invertebrate

Citation: Stalter, L., Dorleus, T., Milone, N. et al. 2024. Tarantula welfare may be improved with greater environmental complexity: A preliminary behavioral study with Brazilian black tarantulas (Grammastola pulchra). PLOS ONE 19(12), e0314501.

Personality dimensions in the common octopus (Octopus vulgaris)

Understanding the origin, universality, and maintenance of among-individual variation in behaviour is a current focus of behavioural ecology and comparative psychology. Research on animal personality emphasising the central role of the individual contributes to conservation efforts and animal welfare by...

Year Published: 2024Topics: PersonalityAnimal Type: Cephalopod, Invertebrate

Citation: Mazza, V., Pacchiarotti, G., Strinati, C. et al. 2024. Personality dimensions in the common octopus (Octopus vulgaris). Behaviour 161(13–15), 913–948.

Lighting and behaviour in captivity: Butterflies prefer light environments containing UV wavelengths

The behaviour and welfare of animals in captivity is of great importance to zoological collections, captive breeding programmes, food production and keepers of companion animals. Artificial lighting is commonly deficient in UV wavelengths, and use of such lighting for indoor...

Year Published: 2024Topics: Husbandry & ManagementAnimal Type: Insect & Spider, Invertebrate

Citation: Thomas, R. K., Gay, A. P., Gwynn-Jones, D. et al. 2024. Lighting and behaviour in captivity: Butterflies prefer light environments containing UV wavelengths. Animal Behaviour 214, 165–172.

Stress produces negative judgement bias in cuttlefish

Judgement bias tasks (JBTs) are used to assess the emotional state and welfare of animals in zoos, farms and laboratories, based on the interpretation of an ambiguous or intermediate cue. Animals in positive affective states are more likely to interpret...

Year Published: 2024Topics: Emotion, Pain, & SentienceAnimal Type: Cephalopod, Invertebrate

Citation: Giancola-Detmering, S. E., Crook, R. J. 2024. Stress produces negative judgement bias in cuttlefish. Biology Letters 20(10), 20240228.

Effects of cold stress on the hemolymph of the Pacific white shrimp Penaeus vannamei

Temperature is an important factor in the physiological processes of aquatic organisms and can seriously affect several chemical and biological processes in their bodies, including respiratory metabolism, antioxidant capacity, immune capacity, and signal transduction. In this study, physiological, transcriptomic, and...

Year Published: 2024Topics: Husbandry & ManagementAnimal Type: Crustacean, Invertebrate

Citation: Zhu, J., Shi, W., Zhao, R. et al. 2024. Effects of cold stress on the hemolymph of the Pacific white shrimp Penaeus vannamei. Fishes 9(1), 36.

Effect of larval handling on black soldier fly life history traits and bioconversion efficiency

In conclusion, the handling procedures used in the current study did not influence the life history traits of the black soldier fly. However, further studies are needed to evaluate if different experimental protocols on various scales, the colony strain or...

Year Published: 2024Topics: HandlingAnimal Type: Insect & Spider, Invertebrate

Citation: Loiotine, Z., Gasco, L., Biasato, I. et al. 2024. Effect of larval handling on black soldier fly life history traits and bioconversion efficiency. Frontiers in Veterinary Science 11.

The effects of caustic soda and benzocaine on directed grooming to the eyestalk in the glass prawn, Palaemon elegans, are consistent with the idea of pain in decapods

Acceptance of the possibility of pain in animals usually requires that various criteria are fulfilled. One such criterion is that a noxious stimulus or wound would elicit directed rubbing or grooming at the site of the stimulus. There is also...

Year Published: 2024Topics: Analgesia, Emotion, Pain, & SentienceAnimal Type: Crustacean, Invertebrate

Citation: Barr, S., Elwood, R. W. 2024. The effects of caustic soda and benzocaine on directed grooming to the eyestalk in the glass prawn, Palaemon elegans, are consistent with the idea of pain in decapods. Animals 14(3), 364.

Trade-offs between avoidance of noxious electric shock and avoidance of bright light in shore crabs are consistent with predictions of pain

The suggestion that decapod crustaceans might experience pain has been dismissed by some authors who claim decapods only respond to noxious stimuli by nociceptive reflexes. Because reflexes do not require complex neuronal processing, but pain does, demonstrating reflex responses to...

Year Published: 2024Topics: Emotion, Pain, & SentienceAnimal Type: Crustacean, Invertebrate

Citation: Barr, S., Elwood, R. W. 2024. Trade-offs between avoidance of noxious electric shock and avoidance of bright light in shore crabs are consistent with predictions of pain. Animals 14(5), 770.

Anesthesia and humane euthanasia methods for king worm larvae (Zophobas morio)

A growing spotlight on insect welfare as research subjects, fodder for vertebrate animals, and patients for veterinarians highlights the need to establish humane euthanasia methods for these species. An insect of increasing commercial importance is the king worm (Zophobas morio),...

Year Published: 2024Topics: Anesthesia & Sedation, EuthanasiaAnimal Type: Invertebrate, Other Invertebrate

Citation: Lum, A. M., Keller, K. A. 2024. Anesthesia and humane euthanasia methods for king worm larvae (Zophobas morio). Zoo Biology 43(2), 164–168.

Metabolic and behavioural effects of hermit crab shell removal techniques: Is heating less invasive than cracking?

Hermit crabs (Paguroidea; Latreille 1802) offer great opportunities to study animal behaviour and physiology. However, the animals' size and sex cannot be determined when they are inside their shell; information crucial to many experimental designs. Here, we tested the effects...

Year Published: 2023Topics: Body Modification/Mutilation, Handling, Husbandry & ManagementAnimal Type: Crustacean, Invertebrate

Citation: Burciaga, L. M., Alcaraz, G. 2023. Metabolic and behavioural effects of hermit crab shell removal techniques: Is heating less invasive than cracking? Animal Welfare 32, e24.