Invertebrate

Ethical considerations for echinoderms: New initiatives in welfare

This paper explores the ethical considerations surrounding research on echinoderms, a group of invertebrates that has recently garnered attention in the scientific community. The importance of responsible animal handling and the need for an ethical framework that encompasses echinoderms are...

Year Published: 2023Topics: Regulations & Ethical ReviewAnimal Type: Invertebrate, Other Invertebrate

Citation: Crespi-Abril, A. C., Rubilar, T. 2023. Ethical considerations for echinoderms: New initiatives in welfare. Animals 13(21), 3377.

Mirror image stimulation could reverse social-isolation-induced aggressiveness in the high-level subsocial lactating spider

Conspecific aggressiveness often increases after social isolation for species that are not entirely solitary, and this increased aggression could also be reversed after resocialization. However, literature on this aggression plasticity refers to either permanently social or low-level subsocial species in...

Year Published: 2022Topics: Social Housing & CompanionshipAnimal Type: Insect & Spider, Invertebrate

Citation: Dong, B., Liu, J.-X., Quan, R.-C. et al. 2022. Mirror image stimulation could reverse social-isolation-induced aggressiveness in the high-level subsocial lactating spider. Animal Cognition 25(5), 1345–1355.

Caution is required when considering sentience in animals: A response to the commentary by Briffa (2022) on “Hermit crabs, shells, and sentience” (Elwood 2022)

My recent review examined the complex and intimate relationship between hermit crabs and the empty gastropod shells upon which they depend for survival. Because shells come with costs as well as benefits, the crabs are highly selective about which ones...

Year Published: 2022Topics: Emotion, Pain, & SentienceAnimal Type: Crustacean, Invertebrate

Citation: Elwood, R. W. 2022. Caution is required when considering sentience in animals: A response to the commentary by Briffa (2022) on “Hermit crabs, shells, and sentience” (Elwood 2022). Animal Cognition 25(6), 1371–1374.

Hermit crabs, shells, and sentience

Hermit crabs have an intimate relationship with gastropod shells and show numerous activities by which they locate, select, and change shells in different contexts. They gather information about new shells and update information about their existing shells. This involves integration...

Year Published: 2022Topics: Emotion, Pain, & SentienceAnimal Type: Crustacean, Invertebrate

Citation: Elwood, R. W. 2022. Hermit crabs, shells, and sentience. Animal Cognition 25(5), 1241–1257.

Behavioural indicators of pain and suffering in arthropods and might pain bite back?

Pain in response to tissue damage functions to change behaviour so that further damage is minimised whereas healing and survival are promoted. This paper focuses on the behavioural criteria that match the function to ask if pain is likely in...

Year Published: 2023Topics: Emotion, Pain, & SentienceAnimal Type: Crustacean, Insect & Spider, Invertebrate

Citation: Elwood, R. W. 2023. Behavioural indicators of pain and suffering in arthropods and might pain bite back? Animals 13(16), 2602.

When should we ascribe sentience to animals? A commentary on “Hermit crabs, shells and sentience” (Elwood 2022)

In a new review article, experiments on hermit crab behaviour are discussed in the context of possible animal sentience. Sentience can be defined as the ability to experience feelings such as pleasure or pain but there are also broader definitions...

Year Published: 2022Topics: Emotion, Pain, & SentienceAnimal Type: Crustacean, Invertebrate

Citation: Briffa, M. 2022. When should we ascribe sentience to animals? A commentary on “Hermit crabs, shells and sentience” (Elwood 2022). Animal Cognition 25(6), 1375–1380.

Shelter color selection of juvenile swimming crabs (Portunus trituberculatus)

Color preference testing for animals is a prerequisite for optimizing facilities and ensuring animal welfare in aquaculture. Swimming crabs (Portunus trituberculatus) are aggressive, and shelters are often installed in ponds to reduce the high mortality rate caused by their agonistic...

Year Published: 2022Topics: Environmental EnrichmentAnimal Type: Crustacean, Invertebrate

Citation: Zhang, H., Zhu, B., Yu, L. et al. 2022. Shelter color selection of juvenile swimming crabs (Portunus trituberculatus). Fishes 7(5), 296.

Improving keeping for octopuses by testing different escape-proof designs on tanks for “big blue octopus” (Octopus cyanea)

Octopus cyanea has a wide range of natural distribution and is interesting for scientific research. However, unlike Octopus vulgaris, the species is poorly studied, and few data exist on best practices for keeping them. One of the most common reasons...

Year Published: 2021Topics: HousingAnimal Type: Cephalopod, Invertebrate

Citation: Asada, K., Nakajima, R., Nishibayashi, T. et al. 2021. Improving keeping for octopuses by testing different escape-proof designs on tanks for “big blue octopus” (Octopus cyanea). Applied Sciences 11(18), 8547.

Do bumble bees play?

A variety of animals have been found to interact with and manipulate inanimate objects ‘just for fun', that is, to play. Most clear examples of object play come from mammals and birds. However, whether insects interact with inanimate objects as...

Year Published: 2022Topics: Natural BehaviorAnimal Type: Insect & Spider, Invertebrate

Citation: Galpayage Dona, H. S., Solvi,C., Kowalewska, A. et al. 2022. Do bumble bees play? Animal Behaviour 194, 239-251.

Responses of purple mud crab (Scylla tranquebarica) to various saccharide solutions and the saccharide-coated pelleted feeds

Mud crabs (Scylla spp.) are economically important portunid species for aquaculture in many countries across the Indo-Pacific region. However, there is still no commercial species-specific formulated feed available for mud crabs, and mud crabs generally reject pelleted feed and the...

Year Published: 2022Topics: Husbandry & ManagementAnimal Type: Crustacean, Invertebrate

Citation: Liew, K.-S., Tan, K., Liew, H. J. et al. 2022. Responses of purple mud crab (Scylla tranquebarica) to various saccharide solutions and the saccharide-coated pelleted feeds. Applied Animal Behaviour Science 257, 105793.