. Bollettino. La scienza. Le abitudini alimentari della sabbia maculato BASS A. R T T*"" 12- yS 8- #^ ^i 4- ^ I I I i i i i i. iâr 10 15 20 25 30 35 40 45 50 n° budella analizzato Fig. 4. Cumulativo per la preda di curve per: a) caduta del 1992 (periodo caldo); e b) primavera 1994 (cool periodo). I simboli sono per (â ) piccola sabbia maculato bass, 50-150 mm SL (n = 35); â ¢) medio spotted sabbia bass, 150-229 mm SL (n = 39); e (â ¦) grande sabbia maculato bass, 230-310 mm SL (n = 42) raccolti nel 1992, e per il piccolo (n = 15), media (n = 41) e grandi sabbia maculato bass (n = 41) raccolti nel 1994. Ordine di analisi dell'intestino era casuale

• Collaboratore: Library Book Collection / Alamy Foto Stock
• ID dell’immagine: RH087F
• Dimensioni dei file: 7,1 MB (162,1 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 1854 x 1347 px | 31,4 x 22,8 cm | 12,4 x 9 inches | 150dpi

Altre informazioni

Questa foto è un'immagine di pubblico dominio, il che significa che il copyright è scaduto o che il titolare del copyright ha rinunciato a tale diritto. Alamy addebita un costo per l'accesso alla copia ad alta risoluzione dell'immagine.

Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.

. Bulletin. Science. FOOD HABITS OF SPOTTED SAND BASS A. r T T*"" 12- yS 8- #^ ^i 4- ^ I I I i i i i i. iâr 10 15 20 25 30 35 40 45 50 No. guts analyzed Fig. 4. Cumulative prey curves for: A) fall of 1992 (warm period); and B) spring of 1994 (cool period). Symbols are for (â ) small spotted sand bass, 50-150 mm SL (n = 35); (â¢) medium spotted sand bass, 150-229 mm SL (n = 39); and (â¦) large spotted sand bass, 230-310 mm SL (n = 42) collected in 1992, and for small (n = 15), medium (n = 41), and large spotted sand bass (n = 41) collected in 1994. Order of gut analysis was randomized five times and a mean number of prey items plotted. Error bars represent one plus or minus one standard deviation. Clear asymptotes indicate a sufficient sample size for precisely characterizing diet. larger spotted sand bass, fish continued to be a common prey item (33% by %IRI); however, ophiuroids (50% by %IRI) made up the majority of the stomach contents (Fig. 5d). In spring 1994, small sand bass ate primarily brachyuran crabs, mysids and gammarid amphipods (Fig. 6b), with crustaceans contributing 99% to the diet by %IRI. Molluscs and annelids were absent as prey in small spotted sand bass. Medium sized fish also consumed primarily crustaceans; however, this prey cat- egory was dominated almost exclusively by mysids (89% by %IRI; Fig. 6c). Ophiuroids, molluscs, annelids, and algae were found in the stomach contents infrequently. Fish as prey were more important in large sand bass (25% by %IRI) compared to small and medium size classes, although mysids (48% by %IRI) and brachyuran crabs (20% by %IRI) were still common prey items identified for this size class (Fig. 6d). Ophiuroids, molluscs, annelids, coral, and algae were found infrequently. Among size classes, indices indicated that species richness was highest for the large size class, and prey evenness was highest for the small size class for both sampling periods (Table 2). However, diversity was also highest in

Parole chiave associate all'immagine

• bookcentury1900
• bookcollectionbiodiversity
• booksubjectscience