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.