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Titolo:
ECOLOGICAL MORPHOLOGY OF LACUSTRINE THREESPINE STICKLEBACK GASTEROSTEUS-ACULEATUS L (GASTEROSTEIDAE) BODY SHAPE
Autore:
WALKER JA;
Indirizzi:
FIELD MUSEUM NAT HIST,DEPT ZOOL,ROOSEVELT RD & LAKE SHORE DR CHICAGO IL 60605 SUNY STONY BROOK,HLTH SCI CTR,DEPT ANAT SCI STONY BROOK NY 11794
Titolo Testata:
Biological Journal of the Linnean Society
fascicolo: 1, volume: 61, anno: 1997,
pagine: 3 - 50
SICI:
0024-4066(1997)61:1<3:EMOLTS>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
FAST-START PERFORMANCE; TROUT SALMO-GAIRDNERI; ANGELFISH PTEROPHYLLUM-EIMEKEI; ANTI-PREDATOR RESPONSES; QUEEN-CHARLOTTE ISLANDS; PIKE ESOX-LUCIUS; LAKE SPECIES PAIR; FRESH-WATER; 3-SPINED STICKLEBACK; GEOGRAPHIC-VARIATION;
Keywords:
LOCOMOTION; BIOMECHANICS; SIZE AND SHAPE; PARALLEL EVOLUTION; ADAPTATION; GEOMETRIC MORPHOMETRICS; RANDOMIZATION TESTS; BOOTSTRAP; COMPARATIVE METHOD; INTERACTION;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
279
Recensione:
Indirizzi per estratti:
Citazione:
J.A. Walker, "ECOLOGICAL MORPHOLOGY OF LACUSTRINE THREESPINE STICKLEBACK GASTEROSTEUS-ACULEATUS L (GASTEROSTEIDAE) BODY SHAPE", Biological Journal of the Linnean Society, 61(1), 1997, pp. 3-50

Abstract

Threespine sticklebacks, small fish with a circumglobal distribution in coastal marine and freshwater of the northern hemisphere, present aremarkable scope of variation in body and fin shape among populations. The repeated evolution of divergent body shapes in a radiation of stickleback from Cook Inlet, Alaska suggests that diversification has proceeded by extensive parallel selection. To explore this hypothesis, hydromechanical equations of fish propulsion and descriptions of stickleback foraging and anti-predator behaviours were used to develop a series of hypotheses that predicted the evolutionary effects of native predatory fishes (NPF) and relative littoral area (RLA) on body shape. Body shape was measured using Cartesian coordinates of anatomical landmarks transformed by the generalized resistant fit superimposition. In general, the results were consistent with the hypotheses that (1) RLA has a direct effect on selection for foraging behaviour and morphology, (2) RLA has an indirect effect on selection for morphology employed in predator evasion, (3) presence of NPF has a direct effect on selection for evasive morphology, and (4) presence of NPF has an indirect effect on selection for foraging behaviour and morphology. The magnitudeof the divergence of body shapes present in the Cook Inlet system suggests that extreme phenotypes have evolved by opportunistic expansion into new habitat relatively free of interspecific competition. (C) 1997 The Linnean Society of London.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 20:01:43