Table 1 Length-frequency distribution of prey species found in stomach contents of Franciscana dolphins from Uruguay. TL: total body length (mm); OL: Otolith length (mm); ML: Mantle length (mm); LRL: lower rostral length (mm); n: sample size for each species; Size range: length range of the prey species found in stomach contents; bold frequency values: frequency for each length range.
Scientific name | Frequency (%) | Regressions | n | Size range (cm) | Source | |||
|---|---|---|---|---|---|---|---|---|
Length range (cm) | ||||||||
<5 | 5–12 | 12–20 | >20 | |||||
Demersal Fishes | ||||||||
Micropogonias furnieri | 0% | 10.8% | 89.2% | 0% | TL = −3.327 + 20.328 OL | 37 | 9–17 | |
Cynoscion guatucupa | 0% | 5.9% | 29.4% | 64.7% | TL = −3.217 + 19.133 OL | 34 | 9–29 | |
Macrodon ancylodon | 39.1% | 15.2% | 28.3% | 17.4% | TL = −69.177 + 28.267 OL | 46 | 2–28 | |
Paralonchurus brasiliensis | 4.9% | 2.4% | 82.9% | 9.8% | TL = −24.228 + 25.294 OL | 41 | 4–23 | |
Urophycis brasiliensis | 0% | 0% | 60.9% | 39.1% | TL = −97.681 + 36.94 OL | 23 | 13–34 | |
Porichthys porosissimus | 0% | 13.8% | 65.5% | 20.7% | TL = −8.335 + 26.734 OL | 29 | 7–27 | |
Pelagic Fishes | ||||||||
Engraulis anchoita | 0% | 48.3% | 51.7% | 0% | TL = −7.401 + 38.88 OL | 29 | 8–15 | |
Anchoa marinii | 8.1% | 91.9% | 0% | 0% | TL = −2.199 + 28.025 OL | 62 | 4–11 | |
Pelagic Cephalopods | ||||||||
Loligo sanpaulensis | 0% | 0% | 0% | 100% | ML = −9.31512 + 63.6316 LRL | 16 | 28–45 | |
All prey | 7.9% | 28.1% | 43.5% | 20.5% | 317 | |||
