By Rudy van der Elst, Dennis King

Книга представляет собой краткой информационный определитель обычных морских рыб региона. Для 268 видов рыб приводятся сведения по внешнему облику, наиболее заметным особенностям, питанию и местам размножения, дополненные полноцветными фотографиями и картами распространения.
Доп. информация: Файл является рипом с сайта Google Books. Этим определяется отсутствие некоторых страниц (до 20% от общего числа) и невысокое разрешение сканирования (около a hundred dpi).
Образец страницы
Мои раздачи биологических определителей, справочников, учебных пособий и монографийБудьте добры, нажмите на кнопку Сказать "Спасибо"!

Show description

Read Online or Download A Photographic Guide to Sea Fishes of Southern Africa PDF

Best zoology books

Additional info for A Photographic Guide to Sea Fishes of Southern Africa

Example text

They have rings on the outside of the body that cause them to appear segmented. Many species lack a tail, and the cloaca is at the end of the body. They vary in size, with the largest species attaining lengths of up to three feet. Caecilians are fossorial or aquatic, and eyes are smaller than in the other two groups. In certain species the eyes are buried beneath the skin or even beneath skull bones. Caecilians also possess a unique sense organ called the tentacle, which is found between the nostril and the eye.

Berkeley: University of California Press, 1983. , and Jennifer A. Hurley. The Rights of Animals. , 1999. Sherry, Clifford J. Animal Rights: A Reference Handbook. , 1994. Singer, Peter. Animal Liberation: A New Ethics for Our Treatment of Animals, 2nd ed. New York: Random House, 1990. Animal Testing In order to more completely understand biology, researchers sometimes conduct experiments on animals. Animal experimentation has a lengthy and productive history in biological research, especially in biomedicine.

Bristleworms have a well-developed head region, often with tentacles, and well-developed sense organs, including paired eyes, antennae, and sensory palps (projections). They are unusual among annelids because their reproductive organs are developed only during the breeding season; afterward, they wither away. The sexes are separate. Gametes (eggs and sperm) are shed into the water, and fertilization is external. Development is indirect, via a trochophore larval stage. The polychaetes are believed to be the most primitive of the annelid classes.

Download PDF sample

Rated 4.27 of 5 – based on 26 votes