التفاصيل البيبلوغرافية
| العنوان: |
Systematics of Notropis cahabae, a New Cyprinid Fish Endemic to the Cahaba River of the Mobile Basin. |
| المؤلفون: |
Mayden, Richard L.1, Kuhajda, Bernard R.1 |
| المصدر: |
Bulletin of the Alabama Museum of Natural History. 11/10/1989, Issue 9, p1-16. 16p. |
| مصطلحات موضوعية: |
*CAHABA shiner, *CYPRINIDAE, *FISH ecology, *FISH behavior, *BEHAVIOR |
| مصطلحات جغرافية: |
CAHABA River (Ala.) |
| مستخلص: |
Notropis cahabae, known for many years as the Cahaba shiner, is herein described and compared with the morphologically similar and closely related N. volucellus (Cope) and N. wickliffi Trautman. The known range of N. cahabae is extremely limited, historically encompassing only about 140 river kilometers of the Cahaba River, but is limited today to about 28 kilometers. The species is restricted to the main channel of the Cahaba River in the Ridge and Valley Province between Helena, Alabama and the Fall Line at Centreville, Alabama. The status of this environmentally sensitive species has declined in recent years as a result of increased effluent from mining and development in the Cahaba River watershed. The extremely limited range and sensitive nature of N. cahabae has led the Alabama Department of Conservation and Natural Resources to recognize it as an endangered species. Notropis cahabae is a member of the Notropis volucellus species group and is sympatric with a form of N. volucellus found in the Mobile Basin. Based on morphological and biochemical analyses, N. volucellus as presenlly recognized is a complex of more than one taxon and N. wickliffi is a distinctive species. The Cahaba shiner differs from other members of the N. volucellus group in overall body shape, features of the cephalic lateralis system, meristic characteristics, four unique and derived alleles, as well as distinctive coloration and pigmentation patterns. Morphological and biochemical features support the hypothesis that N. cahabae is more closely related to N. wickliffi than to N. volucellus. The sister group relationship between these two large-river species provides further support for the Appalachian River connecting the Tennessee and Mobile drainages prior to the Pleistocene. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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