Burrowing in captive juvenile Desertas wolf spiders (Hogan ingens) (Rowlands et al., 2021).
New study in JZAR investigated burrowing behaviour in zoo-housed Desertas wolf spiders: ✔ Optimum substrate depth: >50 mm; ✔ Lighter, loosely packed substrates preferred; ✔ Stone size had positive effect on likelihood of burrow construction; ✔ Applications to captive husbandry and future reintroduction efforts.
Assessing saddle‐billed stork (Ephippiorhynchus senegalensis) pair‐bonds and breeding behavior using behavior observed during multiple breeding seasons (Weibel et al., 2021).
A study in Zoo Biology compared the behaviour and breeding success of two pairs of zoo-housed saddle-billed storks: ✔Higher reproductive success in one of the pairs: eggs produced & incubated in all breeding seasons; ✔"Successful" pair: higher rates of nesting behaviour and close proximity; ✔Pair compatibility may influence breeding success in this species.
Natural environmental conditions and collaborative efforts provide the secret to success for sand tiger shark Carcharias taurus reproduction in aquaria (Wyffels et al., 2020).
A study in Zoo Biology reported the birth of a sand tiger shark young (first time in the Americas), a species notably challenging to breed in captivity... The reasons behind this success were described: ✔Natural environmental conditions: natural seawater, light and seasonal temperature fluctuations;
✔Multi-institutional collaboration: individuals selected and brought together for breeding
Comparison of reproductive success between parent-reared and hand-reared northern bald ibis Geronticus eremita in captivity during Proyecto Eremita(González et al., 2020)
A study in JZAR compared reproductive success between parent-reared and hand-reared Northern bald ibises: ✔Similar reproductive success between parent- & hand-reared clutches; ✔Colony size had a negative effect on reproductive success; ✔Combination of hand- & parent-rearing improved reproductive output for reintroduction.
Zoo‐housed mammals do not avoid giving birth on weekends (Hosey et al., 2020)
New study out in Zoo Biology investigated whether zoo-housed mammals avoid giving birth during the (generally busier) weekends: ✔ 16 mammal species covered: including ungulates, primates & carnivores; ✔ No relationship found between birth rates & visitors numbers; ✔ No "weekend effect" found on birth rates.