Trophic transfer of anthropogenic particles from prey to the Blue-footed Booby in a tropical food web

Fuente: PubMed "booby"
Mar Pollut Bull. 2026 Jun 13;231:120002. doi: 10.1016/j.marpolbul.2026.120002. Online ahead of print.ABSTRACTWildlife worldwide is exposed to anthropogenic particle (AP) pollution. We present the first assessment of APs in the regurgitates (n = 48) and feces (n = 45) of the Blue-footed Booby (Sula nebouxii) at El Rancho Island, Sinaloa. Among the regurgitates, we identified sardines (Opisthonema sp., n = 17), anchovies (Anchoa spp., n = 28), and blue mackerels (Scomber australasicus, n = 3). Anthropogenic particle concentrations were higher in anchovies (45.0 ± 50.1 AP·g-1) than in sardines (5.8 ± 11.9 AP·g-1) or mackerels (1.5 ± 1.1 AP·g-1; Z = 2.53, p = 0.01). FTIR analysis showed that cotton (34.8-67.7%) and cellulose (23.4-46.7%) were predominant materials. Our findings confirm that regurgitates and feces can serve as indicators of recent AP exposure in Blue-footed Boobies and that APs are common throughout the marine food chain, underscoring the value of monitoring APs in tropical seabird breeding colonies.PMID:42288000 | DOI:10.1016/j.marpolbul.2026.120002