Isozyme differences among three related Larus species (Aves)

Neotypification of Larus cachinnans Pallas, 1811 (Aves: Laridae).

Isozyme Variation among Biological Species in the Gibberella fujikuroi Species Complex (Fusarium Section Liseola).

Isozyme phenotypes were determined for 101 strains of Gibberella fujikuroi and 2 strains of Gibberella nygamai that represent seven biological species (mating populations) isolated from a variety of plant hosts in dispersed geographic locations. Fourteen enzymes were resolved in one or more of three buffer systems. Two of the enzymes, arylesterase and acid phosphatase, were polymorphic within t...

Trematodes of Audouin's gull, Larus audouiníí (Aves, Laridae), from Chafarinas lslands

Trematodes of Audouin 3 gull, La rus audouinii (Aves, Laridae), from Chafarinas lslands (W Mediterranean).-A survey was carried out on the trematode fauna of Larus audouinii Payraudeau, 1826 (Aves, Laridae) in the Alboran Sea, south-western Mediterranean. A total of 10 trematode species was found: Sch/josomaatinae gen. sp., Ornithobilharzia sp., Pachytrerna calculus, Renico/a lar( Brachylecithu...

Comparisons of host specificity in feather louse genera (Insecta: Phthiraptera: Philopteridae) parasitizing gulls (Aves: Laridae: Larus).

Data from gene sequences and morphological structures were collected for the gull feather lice, Saemundssonia lari, Quadraceps punctatus, and Q. ornatus, parasitizing Larus crassirostris and L. schistisagus. Saemundssonia lari was collected from both gull species, and no detectable morphological and genetic differences were found between lice collected from the two different hosts. In contrast,...

Differences in sounds made by courting males of three closely related Lake Malawi cichlid species

Courtship sounds made by three sympatric cichlid species, Pseudotropheus zebra, P. callainos and an undescribed species known as P. ‘zebra gold’ were recorded and compared to investigate the potential role of acoustic signals in mate choice. Sounds were emitted during ‘quiver’ and ‘circle’ components of the male courtship display and consisted of rapidly repeated pulse units. Some sound variabl...