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Optimal feeding strategy of the temperate herbivorous fish Aplodactylus punctatus: the effects of food availability on digestive and reproductive patterns
Differences in feeding behavior of populations of the marine temperate herbivorous fish Aplodactylus punctatus, in three different localities off the Chilean coast, which differ qualitatively and quantitatively in food availability were examined. Tests were conducted on whether food selection follow...
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Published in: | Oecologia 1994-09, Vol.99 (1-2), p.118-123 |
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description | Differences in feeding behavior of populations of the marine temperate herbivorous fish Aplodactylus punctatus, in three different localities off the Chilean coast, which differ qualitatively and quantitatively in food availability were examined. Tests were conducted on whether food selection follows optimal foraging strategies, whether there is any modification of the fishes' digestive tracts in relation to their diets, and whether differences in diet quality affect the allocation of energy into reproduction and maintenance in these populations. Samples of this fish and of the understore algal assemblages were taken seasonally from May 1989 to February 1990. For each population dietary composition, weight of the digestive tract and of the food content, the condition factor (K), and the gonadosomatic index (GSI) were analyzed. The results showed that the diet observed in the three populations closely resembled the differences in macroalgal abundance and composition among the three localities studied. Local differences in diet quality were inversely related to the amount of food consumption and size of the digestive tract, suggesting that under differential conditions of food availability A. punctatus is able to compensate for variations in food quality through a flexibility in its digestive strategies. The nutritional status (K) of individuals, and their reproductive pattern (GSI) were directly related to diet quality. These results indicate that although A. punctatus is able to adjust its digestive processes to different algal food regimes, the digestive modifications observed in food-poor environments are not sufficient to compensate for the lack of food and allow fish to reach the nutritional status and reproductive output reached in a food-rich environment. |
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(Chile Univ., Santiago (Chile). Dept. de Ciencias Ecologicas. Facultad de Ciencias) ; Fuentes, L.S ; Ojeda, F.P</creator><creatorcontrib>Caceres, C.W. (Chile Univ., Santiago (Chile). Dept. de Ciencias Ecologicas. Facultad de Ciencias) ; Fuentes, L.S ; Ojeda, F.P</creatorcontrib><description>Differences in feeding behavior of populations of the marine temperate herbivorous fish Aplodactylus punctatus, in three different localities off the Chilean coast, which differ qualitatively and quantitatively in food availability were examined. Tests were conducted on whether food selection follows optimal foraging strategies, whether there is any modification of the fishes' digestive tracts in relation to their diets, and whether differences in diet quality affect the allocation of energy into reproduction and maintenance in these populations. Samples of this fish and of the understore algal assemblages were taken seasonally from May 1989 to February 1990. For each population dietary composition, weight of the digestive tract and of the food content, the condition factor (K), and the gonadosomatic index (GSI) were analyzed. The results showed that the diet observed in the three populations closely resembled the differences in macroalgal abundance and composition among the three localities studied. Local differences in diet quality were inversely related to the amount of food consumption and size of the digestive tract, suggesting that under differential conditions of food availability A. punctatus is able to compensate for variations in food quality through a flexibility in its digestive strategies. The nutritional status (K) of individuals, and their reproductive pattern (GSI) were directly related to diet quality. These results indicate that although A. punctatus is able to adjust its digestive processes to different algal food regimes, the digestive modifications observed in food-poor environments are not sufficient to compensate for the lack of food and allow fish to reach the nutritional status and reproductive output reached in a food-rich environment.</description><identifier>ISSN: 0029-8549</identifier><identifier>EISSN: 1432-1939</identifier><identifier>DOI: 10.1007/bf00317091</identifier><identifier>PMID: 28313956</identifier><identifier>CODEN: OECOBX</identifier><language>eng</language><publisher>Berlin: Springer-Verlag</publisher><subject>Agnatha. 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Psychology ; HABITOS ALIMENTARIOS ; HERBIVORE ; Herbivores ; HERBIVOROS ; Herbivorous fishes ; INGESTION DE PIENSOS ; Marine ; PECES MARINOS ; POISSON DE MER ; PRISE ALIMENTAIRE (ANIMAUX) ; RECHERCHE DE NOURRITURE ; VALEUR NUTRITIVE ; VALOR NUTRITIVO ; Vertebrata</subject><ispartof>Oecologia, 1994-09, Vol.99 (1-2), p.118-123</ispartof><rights>Copyright 1994 Springer-Verlag</rights><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c451t-bcd08c898ef49ecc3255418c8000ab72e2175201be786e588c7f6f67ef8db34f3</citedby><cites>FETCH-LOGICAL-c451t-bcd08c898ef49ecc3255418c8000ab72e2175201be786e588c7f6f67ef8db34f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/4220738$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/4220738$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,27922,27923,58236,58469</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4261804$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28313956$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Caceres, C.W. (Chile Univ., Santiago (Chile). Dept. de Ciencias Ecologicas. Facultad de Ciencias)</creatorcontrib><creatorcontrib>Fuentes, L.S</creatorcontrib><creatorcontrib>Ojeda, F.P</creatorcontrib><title>Optimal feeding strategy of the temperate herbivorous fish Aplodactylus punctatus: the effects of food availability on digestive and reproductive patterns</title><title>Oecologia</title><addtitle>Oecologia</addtitle><description>Differences in feeding behavior of populations of the marine temperate herbivorous fish Aplodactylus punctatus, in three different localities off the Chilean coast, which differ qualitatively and quantitatively in food availability were examined. Tests were conducted on whether food selection follows optimal foraging strategies, whether there is any modification of the fishes' digestive tracts in relation to their diets, and whether differences in diet quality affect the allocation of energy into reproduction and maintenance in these populations. Samples of this fish and of the understore algal assemblages were taken seasonally from May 1989 to February 1990. For each population dietary composition, weight of the digestive tract and of the food content, the condition factor (K), and the gonadosomatic index (GSI) were analyzed. The results showed that the diet observed in the three populations closely resembled the differences in macroalgal abundance and composition among the three localities studied. Local differences in diet quality were inversely related to the amount of food consumption and size of the digestive tract, suggesting that under differential conditions of food availability A. punctatus is able to compensate for variations in food quality through a flexibility in its digestive strategies. The nutritional status (K) of individuals, and their reproductive pattern (GSI) were directly related to diet quality. These results indicate that although A. punctatus is able to adjust its digestive processes to different algal food regimes, the digestive modifications observed in food-poor environments are not sufficient to compensate for the lack of food and allow fish to reach the nutritional status and reproductive output reached in a food-rich environment.</description><subject>Agnatha. Pisces</subject><subject>ALGAE</subject><subject>Animal and plant ecology</subject><subject>Animal digestion</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>Biomass</subject><subject>BUSQUEDA DE ALIMENTO</subject><subject>COMPORTEMENT ALIMENTAIRE</subject><subject>Diet</subject><subject>DIGESTION</subject><subject>Digestive tract</subject><subject>FACTEUR DU MILIEU</subject><subject>FACTORES AMBIENTALES</subject><subject>Food</subject><subject>Food availability</subject><subject>Food sovereignty</subject><subject>Foraging</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>HABITOS ALIMENTARIOS</subject><subject>HERBIVORE</subject><subject>Herbivores</subject><subject>HERBIVOROS</subject><subject>Herbivorous fishes</subject><subject>INGESTION DE PIENSOS</subject><subject>Marine</subject><subject>PECES MARINOS</subject><subject>POISSON DE MER</subject><subject>PRISE ALIMENTAIRE (ANIMAUX)</subject><subject>RECHERCHE DE NOURRITURE</subject><subject>VALEUR NUTRITIVE</subject><subject>VALOR NUTRITIVO</subject><subject>Vertebrata</subject><issn>0029-8549</issn><issn>1432-1939</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNp9kk9rFDEYxoModq1ePIpIDiIirObvJPFWa6tioRc9D5nMm92U2ck0ySzsV_HTmu1uiydPgef55cmbPEHoJSUfKSHqU-cJ4VQRQx-hBRWcLanh5jFaEMLMUkthTtCznG8IoYJK-RSdMM0pN7JZoD_XUwkbO2AP0IdxhXNJtsBqh6PHZQ24wGaCvYTXkLqwjSnOGfuQ1_hsGmJvXdkNVZnm0RVb5vz5bht4D67kfYqPscd2a8NguzCEUqNH3IcV5BK2gO3Y4wRTiv3s7oTJlgJpzM_RE2-HDC-O6yn6fXnx6_z78ur624_zs6ulE5KWZed6op02Grww4BxnUgpaFUKI7RQDRpVkhHagdANSa6d84xsFXvcdF56foveH3DrD7VynajchOxgGO0K9a0u10pqTRtCKvvs_2ijWCCMq-OEAuhRzTuDbKdVnTruWknZfWvvl8r60Cr85ps7dBvoH9L6lCrw9AjY7O_hkRxfyAydYQzXZH_r6gN3kEtM_NiOK62q_OtjextauUk34emHkT0Lrn_kLynKzQA</recordid><startdate>19940901</startdate><enddate>19940901</enddate><creator>Caceres, C.W. 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Psychology</topic><topic>HABITOS ALIMENTARIOS</topic><topic>HERBIVORE</topic><topic>Herbivores</topic><topic>HERBIVOROS</topic><topic>Herbivorous fishes</topic><topic>INGESTION DE PIENSOS</topic><topic>Marine</topic><topic>PECES MARINOS</topic><topic>POISSON DE MER</topic><topic>PRISE ALIMENTAIRE (ANIMAUX)</topic><topic>RECHERCHE DE NOURRITURE</topic><topic>VALEUR NUTRITIVE</topic><topic>VALOR NUTRITIVO</topic><topic>Vertebrata</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Caceres, C.W. (Chile Univ., Santiago (Chile). Dept. de Ciencias Ecologicas. Facultad de Ciencias)</creatorcontrib><creatorcontrib>Fuentes, L.S</creatorcontrib><creatorcontrib>Ojeda, F.P</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>MEDLINE - Academic</collection><jtitle>Oecologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Caceres, C.W. (Chile Univ., Santiago (Chile). Dept. de Ciencias Ecologicas. Facultad de Ciencias)</au><au>Fuentes, L.S</au><au>Ojeda, F.P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimal feeding strategy of the temperate herbivorous fish Aplodactylus punctatus: the effects of food availability on digestive and reproductive patterns</atitle><jtitle>Oecologia</jtitle><addtitle>Oecologia</addtitle><date>1994-09-01</date><risdate>1994</risdate><volume>99</volume><issue>1-2</issue><spage>118</spage><epage>123</epage><pages>118-123</pages><issn>0029-8549</issn><eissn>1432-1939</eissn><coden>OECOBX</coden><abstract>Differences in feeding behavior of populations of the marine temperate herbivorous fish Aplodactylus punctatus, in three different localities off the Chilean coast, which differ qualitatively and quantitatively in food availability were examined. Tests were conducted on whether food selection follows optimal foraging strategies, whether there is any modification of the fishes' digestive tracts in relation to their diets, and whether differences in diet quality affect the allocation of energy into reproduction and maintenance in these populations. Samples of this fish and of the understore algal assemblages were taken seasonally from May 1989 to February 1990. For each population dietary composition, weight of the digestive tract and of the food content, the condition factor (K), and the gonadosomatic index (GSI) were analyzed. The results showed that the diet observed in the three populations closely resembled the differences in macroalgal abundance and composition among the three localities studied. Local differences in diet quality were inversely related to the amount of food consumption and size of the digestive tract, suggesting that under differential conditions of food availability A. punctatus is able to compensate for variations in food quality through a flexibility in its digestive strategies. The nutritional status (K) of individuals, and their reproductive pattern (GSI) were directly related to diet quality. These results indicate that although A. punctatus is able to adjust its digestive processes to different algal food regimes, the digestive modifications observed in food-poor environments are not sufficient to compensate for the lack of food and allow fish to reach the nutritional status and reproductive output reached in a food-rich environment.</abstract><cop>Berlin</cop><pub>Springer-Verlag</pub><pmid>28313956</pmid><doi>10.1007/bf00317091</doi><tpages>6</tpages></addata></record> |
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subjects | Agnatha. Pisces ALGAE Animal and plant ecology Animal digestion Animal, plant and microbial ecology Animals Autoecology Biological and medical sciences Biomass BUSQUEDA DE ALIMENTO COMPORTEMENT ALIMENTAIRE Diet DIGESTION Digestive tract FACTEUR DU MILIEU FACTORES AMBIENTALES Food Food availability Food sovereignty Foraging Fundamental and applied biological sciences. Psychology HABITOS ALIMENTARIOS HERBIVORE Herbivores HERBIVOROS Herbivorous fishes INGESTION DE PIENSOS Marine PECES MARINOS POISSON DE MER PRISE ALIMENTAIRE (ANIMAUX) RECHERCHE DE NOURRITURE VALEUR NUTRITIVE VALOR NUTRITIVO Vertebrata |
title | Optimal feeding strategy of the temperate herbivorous fish Aplodactylus punctatus: the effects of food availability on digestive and reproductive patterns |
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