METAL CHELATE MOLLUSCICIDES - THE REDISTRIBUTION OF IRON DIAZAALKANOLATES FROM THE GUT LUMEN OF THE SLUG, DEROCERAS-RETICULATUM (MULLER) (PULMONATA, LIMACIDAE)
Sj. Clark et al., METAL CHELATE MOLLUSCICIDES - THE REDISTRIBUTION OF IRON DIAZAALKANOLATES FROM THE GUT LUMEN OF THE SLUG, DEROCERAS-RETICULATUM (MULLER) (PULMONATA, LIMACIDAE), Pesticide science, 44(4), 1995, pp. 381-388
Two related iron chelates, one toxic to slugs by ingestion, the other
not, were introduced into the foregut of D, reticulatum. The subsequen
t movement and redistribution of the metal within the slug tissues was
studied by labelling the chelates with the radioactive isotope Fe-55.
In slugs which survived treatment approximately half of the Fe-55 was
voided in faeces. The iron retained became unevenly distributed, the
highest concentration occurring in the digestive gland, irrespective o
f the chelate used. At high doses, slugs treated with tris(1-oxo-1,2-d
iazabutan-2-oxido)Fe(III) were fatally poisoned while those treated wi
th the homologue, tris(1-oxo-1,2-diazaoctan-2-oxido)Fe(III were not. S
lugs killed by the toxic chelate consistently contained proportionally
less iron in the digestive gland and proportionally more in the body
wall and reproductive system. Dosing slugs already killed by carbon di
oxide asphyxiation gave a similar pattern, suggesting that the greater
mobility of the iron from the toxic chelate was not a function of the
slugs' metabolism.