Discrimination in ingestion of protistan prey by larval crabs

Autor:	Shawn Hinz, Stephen Sulkin, Jill Testermann, Suzanne L. Strom
Rok vydání:	2001
Předmět:	Hemigrapsus oregonensis animal structures Ecology biology Decapoda Noctiluca scintillans fungi Dinoflagellate Zoology Aquatic Science biology.organism_classification Crustacean Spawn (biology) Predation Ingestion Ecology Evolution Behavior and Systematics
Zdroj:	Marine Ecology Progress Series. 222:155-162
ISSN:	1616-1599 0171-8630
Popis:	We determined the incidence of ingestion of 4 autotrophic dinoflagellates and 1 het- erotrophic dinoflagellate by first stage larvae of 4 species of crabs. Crab species were 2 winter spawn- ing brachyurans Cancer magister and C. oregonensis, 1 summer spawning brachyuran Hemigrapsus oregonensis, and 1 anomuran Rhinolithodes wosnessenskii. Autotrophic dinoflagellate prey were Prorocentrum micans, which sustain survival of crab larvae in laboratory culture, and 2 species of Alexandrium spp. that do not. P. micans were ingested by virtually all larvae of all 4 crab species, while both toxic and non-toxic strains of Alexandrium were almost never ingested. Results of rearing experiments generally confirmed that larvae were receiving no nutritional contribution from Alexan- drium spp. prey. When brachyuran larvae were presented with mixtures of P. micans and Alexan- drium spp. in defined ratios, virtually all larvae ingested both types of algal prey. Suspending Alexan- drium cells in P. micans exudate did not enhance their ingestion nor did suspending P. micans in Alexandrium exudate reduce ingestion. Ingestion of plastic beads was low (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2b29303c63447b4be1c113de555c466a https://doi.org/10.3354/meps222155 Zobrazit plný text záznamu