The commercial nature of Japan’s whaling program conflicts with its scientific independence. Japan sells meat from the whales it kills on commercial markets and assigns “scientific whaling” quotas to individual whaling villages. These commercial ties create a profit incentive to kill whales even when no scientific need exists, raising troubling questions about the motives behind Japan's program. Briand et al. (The New York Times, May 20, 2002) http://3500131221.blog120.fc2.com/blog-entry-40.html
Multiple analysis of the whaling issue: Understanding the dispute by a matrix Morishita, Marine Policy 30: 802–808 (2006)
水産庁の森下さんによる論文です。このような表で分野毎の捕鯨問題の歴史的遷移を大本営側の視点から説明しています。 Appendix A. Historical transition of the whaling issue: a matrix 1960s - 1970s - 1980s - 1990s - 2000s [Science] Uncertainty - Comprehensive Assessment - RMP - Competition with fisheries [Status of whale stocks] Some depleted - Many stocks recovering - Some stocks abundant enough to allow harvest [Law and Regulation] BWU-Individual species quotas- NMP - Moratorium - RMP - RMS (not implemented) [Economy] Whaling industry - Anti-whaling NGO fundraising - Mega-NGOs [Politics] Stockholm conference - Japan bashing - Brain washed "world opinion" -NGO influence on public policy - Dysfunctional IWC [Culture and emotion] Globalism, cultural clash, cultural imperialism - Respect for cultural diversity
An emerging issue in the science of whales is the role of whales in the ecosystem. When stomach contents were analyzed as part of the scientific whaling programs, it was found that baleen whales eat a large amount of commercially important fish .
その文献はこれ。  Morishita J, Goodman D. Competition between fisheries and marine mammals―feeding marine mammals at the expense of food for humans. In: Proceedings of the Third World Fisheries Congress, 31 October–3 November 2000, Beijing, Reprinted in: A New Focus for the International Whaling Commission. Published by The Institute of Cetacean Research, Tokyo. 2001.
Dan Goodman, a councillor to Japan's Institute of Cetacean Research which manages the nation's scientific whaling programme, said Japan had never said that whales were the cause of declining fish stocks.
It is now widely believed that the United States had brought up the whaling issue at the conference in order to turn the world's attention away from the US defoliation tactics in the Vietnam War which caused large-scale environmental destruction and a health hazard .
「広く信じられている」と指摘しているのであり、決して事実であると主張しているわけではありません。なかなか尻尾をつかませない非常に慎重な書き方です。その文献は何かというとこれ。  Yonezawa K. Foes of whaling lack logic. The Japan Times; 1994.
As I witnessed, and as documents in the United States National Archives corroborate, this last-minute maneuver was, it appeared, part of a grand design to divert the Stockholm Conference's attention from the mounting bitter criticism of the Vietnam War.