Celebrating the 50th Anniversary of Journal of Zoology

The Zoological Society of London, founded by Sir Stamford Raffles in 1826, has published scientific papers in zoology since 1830, first as Proceedings and Transactions of the Zoological Society of London, and in 1966 these publications were merged to form the Journal of Zoology. We are delighted to celebrate the 50th anniversary of our journal by releasing a free Virtual Issue... Continue Reading →

Author Spotlight: The Need for New Categorizations of Dietary Specialism in Animals

Emilio Pagani-Núñez, Craig A. Barnett, Hao Gu & Eben Goodale Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, People’s Republic of China   Moreover, it is not understood when a species will evolve a particular niche width through the device of being polymorphic with phenotypes which are resource specialists, monomorphic with one generalist phenotype, or some intermediate... Continue Reading →

New Journal of Zoology Podcast

A new episode of the Journal of Zoology podcast is now available and you can listen to it here. In this episode, Tim Thurman and Brett Seymoure talk to us about their study on two mimetic butterflies and how similar they appear to the eyes of their predators, we will learn from Lucy Lush how biologging... Continue Reading →

Winner of the 2015 Journal of Zoology ‘Paper of the Year’ award

Journal of Zoology Blog

Biochemical correlates of aggressive behavior in the Siamese fighting fish

M. D. Regan, R. S. Dhillon, D. P. L. Toews, B. Speers-Roesch, M. A. Sackville, S. Pinto, J. S. Bystriansky and G. R. Scott


Aggressive interactions between individuals of the same species can result in the evolution of exaggerated body traits that improve success in these interactions, and subsequently, access to resources such as food and mates. Although conspicuous morphological adaptations such as antlers are usually what come to mind, metabolic processes that occur hidden within cells are required to sustain aggressive behaviour, so their enhancement may also be important for a successful outcome.

Siamese fighting fish, Betta splendens Siamese fighting fish, Betta splendens; photo by Dave Toews

With this in mind, we designed a study to examine the intersection of aggressive behaviour and metabolic biochemistry using the Siamese fighting fish, a staple of the world’s pet shops. Male Siamese fighting fish are notoriously…

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Author Spotlight: The Astonishing Bites of Crocodilians and How They Do It

Ontogenetic bite-force modeling of Alligator mississippiensis: implications for dietary transitions in a large-bodied vertebrate and the evolution of crocodylian feeding P. M. Gignac and G. M. Erickson Alligators and crocodiles are impressive predators that can generate up to 3,000 and 4,000-pound bite forces, which they use to subdue large prey such as deer and wildebeests. To put... Continue Reading →

Author Spotlight: How long do giant squid grow?

Unleashing the Kraken: on the maximum length in giant squid (Architeuthis sp.) C.G.M. Paxton, University of St Andrews Anecdotal accounts of giant squid length are longer than actual measured specimens. And scientists' estimates of maximum giant squid length are shorter than actual measured specimens. The reason for this seeming paradox is that the longer measurements... Continue Reading →

Author Spotlight: Sexual dimorphism in the horned isopod

Sexual dimorphism and physiological correlates of horn length in a South African isopod crustacean D.S. Glazier, S. Clusella-Trullas and J.S. Terblanche   During October 2012 to March 2013 I spent a wonderful sabbatical leave at Stellenbosch University in South Africa.  There I was hosted by two superb physiological ecologists, Drs. John Terblanche and Susana Clusella-Trullas,... Continue Reading →

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