Here are links. To spare you some time I copied and pasted from one of them.
http://www.iatatravelcentre.com/EC-...cy-airport-tax-regulations-details.htm#Export regulations
http://ecuador.visahq.com/customs/
Ecuador Customs, Currency & Airport Tax regulations details
Ecuador country information overview Print
Customs Rules
Import regulations::
Free import:
1. 300 cigarettes or 50 cigars or 200 grammes of tobacco;
2. 1 litre of alcoholic beverages;
3. a reasonable quantity of perfume;
4. gifts, personal effects up to the amount of:
- USD 200 if stay abroad up to 7 days;
- USD 300 if stay abroad from 8 days up to 6 months;
- USD 400 if stay abroad from 6 months up to 2 years;
- USD 500 if stay abroad from 2 years onwards (amounts are irrespective age of passengers).
Restrictions:
1. nationals of Ecuador and the USA may import firearms and ammunition if holding a permit issued by a consulate of Ecuador;
2. fresh or dry meat, uncanned meat products and all kinds of plants and vegetables must have previous permission from "Ministerio de Agriculturay Ganaderia".
Export regulations::
Free export of reasonable quantities of cigarettes, tobacco and national alcoholic beverages.
Prohibited: gold bars, antiques, narcotics,
wild live animals and/or parts thereof.
**You can collect for research but must obtain a special permit, and I am fairly certain you must be a biologist to do so.